DataSourceImpl (Unidata IDV API v6.3)

java.lang.Object
- ucar.unidata.collab.SharableImpl
- - ucar.unidata.data.DataSourceImpl

All Implemented Interfaces:

Sharable, DataSource, DataSourceFactory, XmlPersistable

Direct Known Subclasses:

AddeProfilerDataSource, AddeTextDataSource, CacheDataSource, DescriptorDataSource, EOLProfilerDataSource, FilesDataSource, GeodasDataSource, ImageDataSource, ListDataSource, RaobDataSource, WmsDataSource
```
public class DataSourceImpl
extends SharableImpl
implements DataSource, DataSourceFactory, XmlPersistable
```
An abstract class that implements the DataSource interface. Holds a DataContext, name and description and manages a list of DataChoice-s.
This class is thread-compatible but not thread-safe. Concurrent access to instances of this class should be externally symchronized by the client.

Version:

$Revision: 1.221 $

Author:

IDV Development Team

Field Summary

Fields
Modifier and Type	Field and Description
`protected javax.swing.JCheckBox`	`changeDataPathsCbx` change data paths checkbox
`protected java.lang.Object`	`dataCacheKey` Use this so this object is unique in the data cache
`protected java.util.List<DataChoice>`	`dataChoices` List of associated DataChoices
`protected GeoSelectionPanel`	`geoSelectionPanel` geoselection panel
`protected boolean`	`haveBeenUnPersisted` Has this data source been created from a bundle
`protected boolean`	`okToContinue` flag for continuation
`static int`	`PARAM_SHOW_HIDE` flag for hiding a parameter
`static int`	`PARAM_SHOW_NO` flag for hiding a parameter
`static int`	`PARAM_SHOW_YES` flag for showing a parameter

Fields inherited from interface ucar.unidata.data.DataSource
DATAPATH_DATE_FORMAT, DATAPATH_DATE_PATTERN, MOST_RECENT, ordinalNames, PROP_AUTOCREATEDISPLAY, PROP_BASEDIRECTORY, PROP_CACHEABLE, PROP_DATACHOICENAME, PROP_DISPLAYPROPERTIES, PROP_DOCUMENTLINKS, PROP_FILEPATTERN, PROP_GEOLOCATION, PROP_ICON, PROP_NAME, PROP_POLLINFO, PROP_RESOLVERURL, PROP_SERVICE_HTTP, PROP_SUBPROPERTIES, PROP_TIMELABELS, PROP_TIMESTRIDE, PROP_TITLE

Constructor Summary

Constructors
Constructor and Description
`DataSourceImpl()` Bean constructor
`DataSourceImpl(DataSourceDescriptor descriptor)` Create a DataSourceImpl
`DataSourceImpl(DataSourceDescriptor descriptor, java.lang.String name, java.lang.String description, java.util.Hashtable properties)` Create this DataSourceImpl, setting the dataContext, name and description attributes.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods Deprecated Methods
Modifier and Type	Method and Description
`protected void`	`addActions(java.util.List actions)` Get any `Action`-s associated with this DataSource.
`void`	`addDataChangeListener(DataChangeListener listener)` Add the data change listener
`protected void`	`addDataChoice(DataChoice choice)` Insert the new DataChoice into the dataChoice list.
`void`	`addPropertiesTabs(javax.swing.JTabbedPane tabbedPane)` Add any extra tabs into the properties tab
`protected void`	`addReloadTab(javax.swing.JTabbedPane tabbedPane)` Add a reload tab
`protected void`	`applyFieldMask(org.w3c.dom.Element root)` Load any parameter nodes in the given mask xml
`boolean`	`applyProperties()` Apply properties components
`protected java.lang.Object`	`beginWritingDataToLocalDisk(java.lang.String msg)` Start the JobManager load dialog
`boolean`	`canAddCurrentName(DataChoice dataChoice)` Can we add the data choice name to the global list of parameter names (used in the station model editor)
`boolean`	`canCacheDataToDisk()` Can this data source cache its
`boolean`	`canChangeData()` Can the data be changed? Subclasses should override if they can't.
`boolean`	`canDoAllLevels()` Can this handle "All levels"?
`protected boolean`	`canDoFieldMask()` Can this do a field mask?
`boolean`	`canDoGeoSelection()` Can this datasource do the geoselection subsetting and decimation
`protected boolean`	`canDoGeoSelectionMap()` Used for the geo subsetting property gui as to whether to show the map selection or not
`protected boolean`	`canDoGeoSelectionStride()` Used for the geo subsetting property gui as to whether to show the stride or not
`boolean`	`canPoll()` See if this data source can poll
`boolean`	`canSaveDataToLocalDisk()` Is this data source capable of saving its data to local disk
`int`	`canShowParameter(java.lang.String name)` Should we show the given parameter name
`protected void`	`checkForInitAfterUnPersistence()` some method to initialize
`void`	`clearCachedData()` This is called when the CacheManager detects the need ot clear memory.
`protected void`	`clearFileCache()` Clear the cache
`void`	`clearTimes()` Clear the times list
`java.lang.String`	`convertSourceFile(java.lang.String source)` If this datasource has an ncml template this method will wrap the actual data file in ncml and return the ncml
`protected java.util.List`	`convertToFilesIfDirectory(java.util.List sources)` If the given list is of size 1 and it is a directory then find all files in the directory that match the filePatternForPolling and return them.
`void`	`createAutoDisplay(java.lang.String displayType, DataContext dataContext)` Automatically create the given display on initialization.
`protected java.lang.Object`	`createCacheKey(DataChoice dataChoice, DataSelection dataSelection, java.util.Hashtable requestProperties)` Utility to create the key used when caching
`org.w3c.dom.Element`	`createElement(XmlEncoder encoder)` Create the XML element for persisting this DataSource
`static void`	`decrOutstandingGetDataCalls()` Decrement the static count of get data calls
`protected java.io.File`	`doDirectory(java.io.File file)` Deprecated. Use loadLatestFile
`protected void`	`doMakeDataChoices()` A stub for the derived classes to overwrite.
`protected java.util.List`	`doMakeDateTimes()` A stub for the derived classes to overwrite.
`GeoSelectionPanel`	`doMakeGeoSelectionPanel()` Make the subset component
`GeoSelectionPanel`	`doMakeGeoSelectionPanel(boolean forProperties)` Make the geoselection panel
`GeoSelectionPanel`	`doMakeGeoSelectionPanel(boolean forProperties, GeoSelection geoSelection)` Make the geoselection panel
`protected javax.swing.JComponent`	`doMakeGeoSubsetPropertiesComponent()` Make the geo subset properties component
`void`	`doRemove()` Gets called by the `DataManager` when this DataSource has been removed.
`protected void`	`endWritingDataToLocalDisk(java.lang.Object loadId)` Stop the JobManager load dialog
`boolean`	`equals(java.lang.Object o)` See if the Object in question is equal to this DataSource.
`void`	`expandIfNeeded(CompositeDataChoice cdc)` Gets called by the DataSelection tree gui when a CompositeDataChoice is first opened.
`DataChoice`	`findDataChoice(java.lang.Object id)` Search through the list of DataChoice-s and return the DataChoice object whose id equals the given id parameter.
`java.util.List`	`findDataChoices(java.lang.Object id)` Search through the list of DataChoice-s and return the DataChoice object whose id equals the given id parameter.
`protected void`	`flushCache()` Flush the data cache for this DataSource
`java.util.List`	`getAbsoluteDateTimes(java.util.List selected)` Get the absolute times.
`java.util.List`	`getActions()` Get any `Action`-s associated with this DataSource.
`java.lang.String`	`getAlias()` Get the Alias property.
`java.util.List`	`getAllDateTimes()` Return an array of DateTimes representing all the times in the DataSource.
`java.util.List`	`getAllDateTimes(DataChoice dataChoice)` Get all the times for the given DataChoice
`java.util.List`	`getAllLevels(DataChoice dataChoice)` Get the list of all levels available from this DataSource
`java.util.List`	`getAllLevels(DataChoice dataChoice, DataSelection dataSelection)` Get all of the levels
`protected java.util.List<visad.DateTime>`	`getAllTimesForTimeDriver(DataChoice dataChoice, DataSelection selection, java.util.List<visad.DateTime> timeDriverTimes)` Get the list of times to compare to the time driver times
`java.lang.Object`	`getCache(java.lang.Object key)` Get an Object from the cache.
`java.lang.Object`	`getCache(java.lang.Object key, boolean force)` Get an Object from the cache.
`long`	`getCacheClearDelay()` Get the CacheClearDelay property.
`boolean`	`getCacheDataToDisk()` Get the CacheFlatFields property.
`java.util.List`	`getCompositeDataChoices(CompositeDataChoice compositeDataChoice, java.util.List dataChoices)` This is called by the composite data choice to update the list of children.
`visad.Data`	`getData(DataChoice dataChoice, DataCategory category, DataSelection incomingDataSelection, java.util.Hashtable requestProperties)` Get the data applicable to the DataChoice and selection criteria.
`visad.Data`	`getData(DataChoice dataChoice, DataCategory dataCategory, java.util.Hashtable requestProperties)` Get the data applicable to the DataChoice and selection criteria.
`java.lang.String`	`getDataCachePath()` Where do we write cached data to
`protected java.util.List`	`getDataChangeListeners()` Get the data change listeners
`java.util.List`	`getDataChoices()` This will lazily create the actual list of DataChoice-s with a call to doMakeDataChoices which creates the DataChoice objects concretely defined by this DataSource (e.g., the fields within an netCdf file).
`DataContext`	`getDataContext()` Get the `DataContext` for this DataSource.
`protected visad.Data`	`getDataInner(DataChoice dataChoice, DataCategory category, DataSelection dataSelection)` Have this one around for other, non-unidata, datasource implementations.
`protected visad.Data`	`getDataInner(DataChoice dataChoice, DataCategory category, DataSelection dataSelection, java.util.Hashtable requestProperties)` Actually get the data identified by the given DataChoce.
`boolean`	`getDataIsEditable()` Get the DataIsEditable property.
`java.util.List`	`getDataPaths()` Get the file paths (or urls or whatever) that are to be changed when we re unpersisted and are in data editable mode
`protected java.lang.String`	`getDataPrefix()` Get the file prefix to use for when saving data to local disk
`DataSelection`	`getDataSelection()` Return the DataSelection for this DataSource.
`java.util.List<DataSelectionComponent>`	`getDataSelectionComponents(DataChoice dataChoice)` A hook to allow this data source to add data selection components to the IDV field selector
`DataSource`	`getDataSource()` This is the method defined for the DataSourceFactory interface.
`static java.util.List`	`getDateTimes(java.util.List selected, java.util.List allTimes)` A utility method that returns a list of times.
`java.util.List`	`getDateTimeSelection()` Return the list of times held by the DataSelection member.
`boolean`	`getDefaultSave()` Gets the default save.
`java.lang.String`	`getDescription()` Return the human readable description of this DataSource
`DataSourceDescriptor`	`getDescriptor()` Get the `DataSourceDescriptor` for this DataSource.
`java.lang.String`	`getErrorMessage()` Get the error message (if there is one) or create one.
`boolean`	`getEverChangedName()` Get the EverChangedName property.
`protected javax.swing.JComponent`	`getExtraGeoSelectionComponent()` Return the extra component for the geo selection panel.
`protected javax.swing.JComponent`	`getExtraTimesComponent()` This gets pu at the bottom of the times properties tab
`protected javax.swing.filechooser.FileFilter`	`getFileFilterForPolling()` Return the file fitler that the polling info uses.
`java.lang.String`	`getFullDescription()` Get the full description for this data source.
`java.lang.String`	`getid()` Get a unique id for this DataSource
`IntegratedDataViewer`	`getIdv()` Get the IDV
`boolean`	`getInError()` Return whether this DataSource is in error
`protected java.lang.String`	`getLocalDirectory(java.lang.String label, java.lang.String prefix)` Get the directory to write the localized data files to
`protected java.io.File`	`getLocationForPolling()` Get the location, either a file or a directory, that is where we poll on.
`protected java.util.List`	`getLocationsForPolling()` Get the locations to use for polling
`protected java.util.List`	`getMostRecentFiles(java.io.File dir, int cnt)` Find the most recent cnt number of files in the given directory that match the fileFIlterForPolling
`java.lang.String`	`getName()` Returns the human readable name of this DataSource.
`static java.lang.String`	`getNameForDataSource(DataSource ds, int length, boolean alwaysDoIt)` A helper method to find the label to use for the given `DataSource`.
`boolean`	`getNeedToShowErrorToUser()` Should we show the error to the user.
`int`	`getNextId()` A unique identifier for DataSource objects.
`static int`	`getOutstandingGetDataCalls()` How many get data calls are we currently waiting on
`java.lang.String`	`getPartialDescription()` Return the human readable description of this DataSource
`java.lang.String`	`getPassword()` Get the Password property.
`java.util.List`	`getPathsThatCanBeRelative()` Return the paths that can be saved off relative to wehre the bundle is.
`PollingInfo`	`getPollingInfo()` Get the PollingInfo property.
`java.util.Hashtable`	`getProperties()` Get the associated properties
`void`	`getPropertiesComponents(java.util.List comps)` Add the gui components into the list for the properties dialog
`protected javax.swing.JComponent`	`getPropertiesHeader(java.lang.String label)` Utility to create a header for the properties dialog
`java.lang.Object`	`getProperty(java.lang.String name)` Get a property.
`boolean`	`getProperty(java.lang.String name, boolean dflt)` Get the named boolean property
`double`	`getProperty(java.lang.String name, double dflt)` Get the named double property
`int`	`getProperty(java.lang.String name, int dflt)` Get the named int property
`long`	`getProperty(java.lang.String name, long dflt)` Get the named long property
`java.lang.Object`	`getProperty(java.lang.String name, java.lang.Object dflt)` Get the object property
`java.lang.String`	`getProperty(java.lang.String name, java.lang.String dflt)` Get the named String property.
`java.util.List`	`getRelativePaths()` Get the RelativePaths property.
`protected ucar.unidata.geoloc.ProjectionImpl`	`getSampleDataProjection()` Used for the geo subsetting property gui
`protected java.lang.String`	`getSaveDataFileLabel()` Get the save data to a file label
`java.util.List`	`getSelectedDateTimes()` Get the list of selected times.
`java.util.List`	`getSelectedDateTimes(DataChoice dataChoice)` Get the selected times for the given DataChoice.
`protected java.util.List`	`getTimesFromDataSelection(DataSelection givenDataSelection, DataChoice dataChoice)` If givenDataSelection is non-null and has a non-null times list then return that.
`java.util.List`	`getTmpPaths()` Get the TmpPaths property.
`java.lang.String`	`getTypeName()` Get the type name for this DataSource
`java.lang.String`	`getUserName()` Get the UserName property.
`void`	`handlePropertiesAction(java.lang.String cmd)` Handle the properties action
`protected boolean`	`hasPollingInfo()` Do we have polling info object
`static boolean`	`holdsDateTimes(java.util.List selectedTimes)` See if the selection list is a set of times or indices
`static boolean`	`holdsIndices(java.util.List selectedTimes)` A utility to determine whether the given list holds a set of Integer indices.
`boolean`	`identifiedBy(java.lang.Object definingObject)` See if this DataSource is identified by the definingObject.
`boolean`	`identifiedByName(java.lang.String name)` Is this datasource identified by the given label.
`static void`	`incrOutstandingGetDataCalls()` Increment the static count of get data calls
`protected void`	`initAfter()` Init after
`void`	`initAfterCreation()` Gets called after creation.
`void`	`initAfterUnpersistence()` Implement the XmlPersistable interface method that is called after this object has been fully created and initialized after being unpersisted by the XmlEncoder.
`void`	`initDataChoice(DataChoice dataChoice)` Sets the global id of the given dataChoice to be a per process unique string value.
`protected void`	`initDataSelectionComponents(java.util.List<DataSelectionComponent> components, DataChoice dataChoice)` Add any data selection components
`boolean`	`initFromXml(XmlEncoder encoder, org.w3c.dom.Element element)` Initialize this from XML
`protected boolean`	`isPolling()` Are we currently polling.
`protected void`	`loadFieldMask()` Check to see if there is a field maskfile defined.
`protected void`	`loadFieldMask(java.lang.String maskFile)` Load the field mask
`protected java.io.File`	`loadLatestFile(java.io.File file)` Load the latest file.
`void`	`logException(java.lang.String msg, java.lang.Exception exc)` Shortcut to logging facility for subclasses to use
`void`	`logException(java.lang.String msg, java.lang.Exception exc, byte[] fileBytes)` Log the exception with the file bytes
`protected void`	`makeDerivedDataChoices(java.util.List dataChoices)` Add to the given list the set of derived data choices
`protected void`	`makeSaveLocalActions(java.util.List actions)` Make save local actions
`void`	`newFileFromPolling(java.io.File f)` This gets called by the FilePoller ActionListener to notify DataSource-s of a change to the file system.
`void`	`newFilesFromPolling(java.util.List files)` This gets called by the FilePoller ActionListener to notify DataSource-s of a change to the file system.
`void`	`notifyDataChange()` Notify all `DataChangeListener`s of some change to the data
`protected void`	`propertiesChanged()` The properties changed
`void`	`putCache(java.lang.Object key, java.lang.Object value)` Put an object in the cache if caching is enabled.
`void`	`putCache(java.lang.Object key, java.lang.Object value, boolean force)` Put an object in the cache.
`void`	`reloadData()` Flush the cache and tell listeners we have changed.
`void`	`reloadData(java.lang.Object object, java.util.Hashtable properties)` Reload data
`void`	`reloadProperties(java.util.Hashtable newProperties)` Reload properties
`void`	`removeCache(java.lang.Object key)` Remove an Object from the cache.
`void`	`removeDataChangeListener(DataChangeListener listener)` Remove the data change listener
`protected void`	`removeDataChoice(DataChoice choice)` Remove the choice
`void`	`removeProperty(java.lang.String name)` Remove the property
`void`	`replaceDataChoice(DataChoice oldDataChoice, DataChoice newDataChoice)` Replace the given child with the given chold
`void`	`resetTmpState()` This gets called after we have been saved in a zidv bundle to reset us back to any original state
`java.util.List`	`saveDataToLocalDisk()` Save dat to local disk
`java.util.List`	`saveDataToLocalDisk(boolean changeLinks, java.lang.String uniqueFilePath)` Save the data to local disk.
`protected java.util.List`	`saveDataToLocalDisk(java.lang.String filePrefix, java.lang.Object loadId, boolean changeLinks)` Save the data source files to local disk
`java.util.List<visad.DateTime>`	`selectTimesFromList(DataSelection dataSelection, java.util.List sourceTimes, java.util.List<visad.DateTime> selectionTimes)` For each time in selectionTimes this method finds the closest time in sourceTimes
`void`	`setAlias(java.lang.String value)` Set the Alias property.
`void`	`setAskToUpdate(boolean value)` Deprecated. Keep around for bundles
`void`	`setCacheClearDelay(long value)` Set the CacheClearDelay property.
`void`	`setCacheDataToDisk(boolean value)` Set the CacheFlatFields property.
`void`	`setDataEditableStrings(java.util.List strings)` Set the changed file or url paths
`void`	`setDataIsEditable(boolean value)` Set the DataIsEditable property.
`void`	`setDataIsRelative(boolean value)` Set the DataIsEditable property.
`void`	`setDataRelativeStrings(java.util.List strings)` Used when loading from a bundle with relative file paths
`void`	`setDataSelection(DataSelection s)` Set the DataSelection for this DataSource.
`void`	`setDateTimeSelection(java.util.List selectedTimes)` Set the list of selected times for this data source.
`void`	`setDefaultSave(boolean defaultsave)` Sets the default save.
`void`	`setDescription(java.lang.String n)` Set the description for this DataSource
`void`	`setDescriptor(DataSourceDescriptor d)` Set the `DataSourceDescriptor` for this DataSource.
`void`	`setDirectory(java.lang.String n)` Deprecated.
`void`	`setEverChangedName(boolean value)` Set the EverChangedName property.
`void`	`setInError(boolean e)` Set whether this DataSource is in error
`void`	`setInError(boolean inError, boolean needToShowErrorToUser, java.lang.String msg)` Set the inError
`void`	`setInError(boolean e, java.lang.String msg)` Set whether this DataSource is in error
`void`	`setName(java.lang.String n)` Set the name of this DataSource
`void`	`setNewFiles(java.util.List files)` Used for when we dynamically change the data source files form a bundle or from image generation
`void`	`setObjectProperties(java.util.Hashtable properties)` set the properties
`void`	`setObjectProperty(java.lang.String name, java.lang.String value)` Set the property on this object.
`void`	`setPassword(java.lang.String value)` Set the Password property.
`void`	`setPollingInfo(PollingInfo value)` Set the PollingInfo property.
`void`	`setPollLocation(java.lang.String value)` Deprecated.
`void`	`setProperties(java.util.Hashtable p)` Get the associated properties
`void`	`setProperty(java.lang.String prop, boolean value)` Set a boolean property.
`void`	`setProperty(java.lang.String prop, java.lang.Object value)` Set a string property.
`void`	`setRelativePaths(java.util.List value)` Set the RelativePaths property.
`void`	`setTemplateName(java.lang.String n)` Keep around for legacy bundles
`void`	`setTmpPaths(java.util.List value)` Set the TmpPaths property.
`void`	`setUserName(java.lang.String value)` Set the UserName property.
`protected boolean`	`shouldCache(visad.Data data)` See if this DataSource should cache or not
`protected boolean`	`shouldCache(DataChoice dataChoice, visad.Data data)` See if this DataSource should cache or not
`boolean`	`showPasswordDialog(java.lang.String title, java.lang.String label)` Show the password dialog
`boolean`	`showPropertiesDialog()` Show the properties dialog
`boolean`	`showPropertiesDialog(java.lang.String initTabName)` Show the properties dialog
`boolean`	`showPropertiesDialog(java.lang.String initTabName, boolean modal)` Show the dialog
`protected void`	`showWaitDialog(int count)` Show a wait dialog.
`protected void`	`tick()` Stub method.
`java.lang.String`	`toString()` Return a String representation of this DataSource
`java.lang.String`	`toStringTruncated()` Return a truncated string for the name if too long
`protected void`	`updateDetailsText()` Update the properties dialog details page
`void`	`updateState(java.lang.Object newObject, java.util.Hashtable newProperties)` Update the state
`void`	`writeFieldMaskFile()` Write a mask file
`protected void`	`writeFieldMaskFile(org.w3c.dom.Document doc, org.w3c.dom.Element root)` Write the field mask file.

Methods inherited from class ucar.unidata.collab.SharableImpl
applySharableProperties, doShare, doShare, doShareExternal, doShareInternal, getReceiveShareTime, getSharablePropertiesComponent, getShareGroup, getSharing, getUniqueId, initSharable, receiveShareData, removeSharable, setReceiveShareTime, setShareGroup, setSharing, setUniqueId, showSharableDialog

Methods inherited from class java.lang.Object
clone, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface ucar.unidata.data.DataSource
getUniqueId

- Field Detail
  - PARAM_SHOW_YES
```
public static int PARAM_SHOW_YES
```
    flag for showing a parameter
  - PARAM_SHOW_HIDE
```
public static int PARAM_SHOW_HIDE
```
    flag for hiding a parameter
  - PARAM_SHOW_NO
```
public static int PARAM_SHOW_NO
```
    flag for hiding a parameter
  - dataCacheKey
```
protected java.lang.Object dataCacheKey
```
    Use this so this object is unique in the data cache
  - dataChoices
```
protected java.util.List<DataChoice> dataChoices
```
    List of associated DataChoices
  - changeDataPathsCbx
```
protected javax.swing.JCheckBox changeDataPathsCbx
```
    change data paths checkbox
  - geoSelectionPanel
```
protected GeoSelectionPanel geoSelectionPanel
```
    geoselection panel
  - haveBeenUnPersisted
```
protected boolean haveBeenUnPersisted
```
    Has this data source been created from a bundle
  - okToContinue
```
protected boolean okToContinue
```
    flag for continuation
- Constructor Detail
  - DataSourceImpl
```
public DataSourceImpl()
```
    Bean constructor
  - DataSourceImpl
```
public DataSourceImpl(DataSourceDescriptor descriptor)
```
    Create a DataSourceImpl
    
    Parameters:
    
    descriptor - the descriptor for this DataSource
  - DataSourceImpl
```
public DataSourceImpl(DataSourceDescriptor descriptor,
                      java.lang.String name,
                      java.lang.String description,
                      java.util.Hashtable properties)
```
    Create this DataSourceImpl, setting the dataContext, name and description attributes.
    
    Parameters:
    
    descriptor - the descriptor for this DataSource
    
    name - the name for this
    
    description - the description
    
    properties - extra properties
- Method Detail
  - reloadData
```
public void reloadData(java.lang.Object object,
                       java.util.Hashtable properties)
```
    Reload data
    
    Specified by:
    
    reloadData in interface DataSource
    
    Parameters:
    
    object - the object
    
    properties - the properties
  - reloadProperties
```
public void reloadProperties(java.util.Hashtable newProperties)
```
    Reload properties
    
    Parameters:
    
    newProperties - new properties
  - convertSourceFile
```
public java.lang.String convertSourceFile(java.lang.String source)
                                   throws java.lang.Exception
```
    If this datasource has an ncml template this method will wrap the actual data file in ncml and return the ncml
    
    Parameters:
    
    source - the original file or url
    
    Returns:
    
    The wrapped file or url if we have an ncml template. Else the source
    
    Throws:
    
    java.lang.Exception - On badness
  - canDoFieldMask
```
protected boolean canDoFieldMask()
```
    Can this do a field mask?
    
    Returns:
    
    false
  - canDoAllLevels
```
public boolean canDoAllLevels()
```
    Can this handle "All levels"?
    
    Specified by:
    
    canDoAllLevels in interface DataSource
    
    Returns:
    
    true
  - getIdv
```
public IntegratedDataViewer getIdv()
```
    Get the IDV
    
    Returns:
    
    the IDV
  - loadFieldMask
```
protected void loadFieldMask()
```
    Check to see if there is a field maskfile defined. If so load it in.
  - loadFieldMask
```
protected void loadFieldMask(java.lang.String maskFile)
```
    Load the field mask
    
    Parameters:
    
    maskFile - the field mask
  - applyFieldMask
```
protected void applyFieldMask(org.w3c.dom.Element root)
```
    Load any parameter nodes in the given mask xml
    
    Parameters:
    
    root - xml root
  - canAddCurrentName
```
public boolean canAddCurrentName(DataChoice dataChoice)
```
    Can we add the data choice name to the global list of parameter names (used in the station model editor)
    
    Specified by:
    
    canAddCurrentName in interface DataSource
    
    Parameters:
    
    dataChoice - the data choice
    
    Returns:
    
    can add to global name list
  - writeFieldMaskFile
```
public void writeFieldMaskFile()
```
    Write a mask file
  - writeFieldMaskFile
```
protected void writeFieldMaskFile(org.w3c.dom.Document doc,
                                  org.w3c.dom.Element root)
```
    Write the field mask file. Subclasses should implement
    
    Parameters:
    
    doc - document to write to
    
    root - root element
  - canShowParameter
```
public int canShowParameter(java.lang.String name)
```
    Should we show the given parameter name
    
    Parameters:
    
    name - parameter name
    
    Returns:
    
    should show the parameter as a data choice
  - setObjectProperties
```
public void setObjectProperties(java.util.Hashtable properties)
```
    Description copied from interface: DataSource
    
    set the properties
    
    Specified by:
    
    setObjectProperties in interface DataSource
    
    Parameters:
    
    properties - Specification of the name=value properties.
  - setObjectProperty
```
public void setObjectProperty(java.lang.String name,
                              java.lang.String value)
```
    Set the property on this object. Use reflection to find the appropriate set method
    
    Parameters:
    
    name - property name
    
    value - value
  - getCompositeDataChoices
```
public java.util.List getCompositeDataChoices(CompositeDataChoice compositeDataChoice,
                                              java.util.List dataChoices)
```
    This is called by the composite data choice to update the list of children. The default is to just return the given list but derived classes might do something different.
    
    Specified by:
    
    getCompositeDataChoices in interface DataSource
    
    Parameters:
    
    compositeDataChoice - The composite
    
    dataChoices - List of children choices
    
    Returns:
    
    The dataChoices list
  - initAfter
```
protected void initAfter()
```
    Init after
  - initAfterUnpersistence
```
public void initAfterUnpersistence()
```
    Implement the XmlPersistable interface method that is called after this object has been fully created and initialized after being unpersisted by the XmlEncoder.
    
    Specified by:
    
    initAfterUnpersistence in interface DataSource
  - initAfterCreation
```
public void initAfterCreation()
```
    Gets called after creation. Initialize the polling.
    
    Specified by:
    
    initAfterCreation in interface DataSource
  - setNewFiles
```
public void setNewFiles(java.util.List files)
```
    Used for when we dynamically change the data source files form a bundle or from image generation
    
    Specified by:
    
    setNewFiles in interface DataSource
    
    Parameters:
    
    files - List of new files to use
  - createElement
```
public org.w3c.dom.Element createElement(XmlEncoder encoder)
```
    Create the XML element for persisting this DataSource
    
    Specified by:
    
    createElement in interface XmlPersistable
    
    Parameters:
    
    encoder - encoder to use
    
    Returns:
    
    this as XML
  - initFromXml
```
public boolean initFromXml(XmlEncoder encoder,
                           org.w3c.dom.Element element)
```
    Initialize this from XML
    
    Specified by:
    
    initFromXml in interface XmlPersistable
    
    Parameters:
    
    encoder - encoder for XML
    
    element - the XML representation
    
    Returns:
    
    true
  - getProperties
```
public java.util.Hashtable getProperties()
```
    Get the associated properties
    
    Returns:
    
    the properties
  - setProperties
```
public void setProperties(java.util.Hashtable p)
```
    Get the associated properties
    
    Parameters:
    
    p - the new properties
  - removeProperty
```
public void removeProperty(java.lang.String name)
```
    Remove the property
    
    Parameters:
    
    name - property name to remove
  - getProperty
```
public java.lang.Object getProperty(java.lang.String name)
```
    Get a property.
    
    Specified by:
    
    getProperty in interface DataSource
    
    Parameters:
    
    name - name of property
    
    Returns:
    
    the associated property value or null
  - setProperty
```
public void setProperty(java.lang.String prop,
                        java.lang.Object value)
```
    Set a string property.
    
    Parameters:
    
    prop - property name
    
    value - property value
  - getProperty
```
public java.lang.String getProperty(java.lang.String name,
                                    java.lang.String dflt)
```
    Get the named String property.
    
    Parameters:
    
    name - name of property
    
    dflt - default value
    
    Returns:
    
    the value of the property or the default
  - getProperty
```
public long getProperty(java.lang.String name,
                        long dflt)
```
    Get the named long property
    
    Parameters:
    
    name - name of property
    
    dflt - default value
    
    Returns:
    
    the value of the property or the default
  - getProperty
```
public int getProperty(java.lang.String name,
                       int dflt)
```
    Get the named int property
    
    Parameters:
    
    name - name of property
    
    dflt - default value
    
    Returns:
    
    the value of the property or the default
  - getProperty
```
public double getProperty(java.lang.String name,
                          double dflt)
```
    Get the named double property
    
    Parameters:
    
    name - name of property
    
    dflt - default value
    
    Returns:
    
    the value of the property or the default
  - getProperty
```
public java.lang.Object getProperty(java.lang.String name,
                                    java.lang.Object dflt)
```
    Get the object property
    
    Parameters:
    
    name - name of property
    
    dflt - default value
    
    Returns:
    
    the value of the property or the default
  - getProperty
```
public boolean getProperty(java.lang.String name,
                           boolean dflt)
```
    Get the named boolean property
    
    Parameters:
    
    name - name of property
    
    dflt - default value
    
    Returns:
    
    the value of the property or the default
  - setProperty
```
public void setProperty(java.lang.String prop,
                        boolean value)
```
    Set a boolean property.
    
    Parameters:
    
    prop - name of property
    
    value - value of property
  - getNeedToShowErrorToUser
```
public boolean getNeedToShowErrorToUser()
```
    Should we show the error to the user. Normally this is true but some data sources handle their own errors. By setting this to false the error message won't show up twice.
    
    Specified by:
    
    getNeedToShowErrorToUser in interface DataSource
    
    Returns:
    
    Should show error
  - getInError
```
public boolean getInError()
```
    Return whether this DataSource is in error
    
    Specified by:
    
    getInError in interface DataSource
    
    Returns:
    
    true if in error
  - setInError
```
public void setInError(boolean e,
                       java.lang.String msg)
```
    Set whether this DataSource is in error
    
    Parameters:
    
    e - true for error
    
    msg - error message
  - setInError
```
public void setInError(boolean inError,
                       boolean needToShowErrorToUser,
                       java.lang.String msg)
```
    Set the inError
    
    Parameters:
    
    inError - Is in error
    
    needToShowErrorToUser - SHould show to user
    
    msg - Any message
  - setInError
```
public void setInError(boolean e)
```
    Set whether this DataSource is in error
    
    Specified by:
    
    setInError in interface DataSource
    
    Parameters:
    
    e - true for error
  - getErrorMessage
```
public java.lang.String getErrorMessage()
```
    Get the error message (if there is one) or create one.
    
    Specified by:
    
    getErrorMessage in interface DataSource
    
    Returns:
    
    the error message
  - clearCachedData
```
public void clearCachedData()
```
    This is called when the CacheManager detects the need ot clear memory. It is intended to be overwritten by derived classes that are holding cached data that is not in the normal putCache facilities provided by this class since that data is actually managed by the CacheManager
    
    Specified by:
    
    clearCachedData in interface DataSource
  - flushCache
```
protected void flushCache()
```
    Flush the data cache for this DataSource
  - putCache
```
public void putCache(java.lang.Object key,
                     java.lang.Object value)
```
    Put an object in the cache if caching is enabled.
    
    Parameters:
    
    key - cache key
    
    value - associated key value
  - putCache
```
public void putCache(java.lang.Object key,
                     java.lang.Object value,
                     boolean force)
```
    Put an object in the cache.
    
    Parameters:
    
    key - cache key
    
    value - associated key value
    
    force - force a cache
  - getCache
```
public java.lang.Object getCache(java.lang.Object key)
```
    Get an Object from the cache.
    
    Parameters:
    
    key - key for the object
    
    Returns:
    
    the key value, or null
  - getCache
```
public java.lang.Object getCache(java.lang.Object key,
                                 boolean force)
```
    Get an Object from the cache.
    
    Parameters:
    
    key - key for the object
    
    force - force a lookup even if not caching
    
    Returns:
    
    the key value, or null
  - removeCache
```
public void removeCache(java.lang.Object key)
```
    Remove an Object from the cache.
    
    Parameters:
    
    key - key for the object
  - shouldCache
```
protected boolean shouldCache(DataChoice dataChoice,
                              visad.Data data)
```
    See if this DataSource should cache or not
    
    Parameters:
    
    dataChoice - The data choice we got this data from
    
    data - Data to cache
    
    Returns:
    
    true
  - shouldCache
```
protected boolean shouldCache(visad.Data data)
```
    See if this DataSource should cache or not
    
    Parameters:
    
    data - Data to cache
    
    Returns:
    
    true
  - doRemove
```
public void doRemove()
```
    Gets called by the DataManager when this DataSource has been removed.
    
    Specified by:
    
    doRemove in interface DataSource
  - loadLatestFile
```
protected java.io.File loadLatestFile(java.io.File file)
```
    Load the latest file.
    
    Parameters:
    
    file - file to load
    
    Returns:
    
    name of file loaded.
  - doDirectory
```
protected java.io.File doDirectory(java.io.File file)
```
    Deprecated. Use loadLatestFile
    
    Get the most recent file in a direcdtory
    
    Parameters:
    
    file - directory
    
    Returns:
    
    the most recent file in the directory
  - newFilesFromPolling
```
public void newFilesFromPolling(java.util.List files)
```
    This gets called by the FilePoller ActionListener to notify DataSource-s of a change to the file system.
    
    Parameters:
    
    files - List of files
  - newFileFromPolling
```
public void newFileFromPolling(java.io.File f)
```
    This gets called by the FilePoller ActionListener to notify DataSource-s of a change to the file system.
    
    Parameters:
    
    f - new file
  - toString
```
public java.lang.String toString()
```
    Return a String representation of this DataSource
    
    Overrides:
    
    toString in class java.lang.Object
    
    Returns:
    
    string represenation
  - toStringTruncated
```
public java.lang.String toStringTruncated()
```
    Return a truncated string for the name if too long
    
    Returns:
    
    toString truncated to 30 chars
  - getid
```
public java.lang.String getid()
```
    Get a unique id for this DataSource
    
    Returns:
    
    a unique id
  - setDescriptor
```
public void setDescriptor(DataSourceDescriptor d)
```
    Set the DataSourceDescriptor for this DataSource.
    
    Parameters:
    
    d - new descriptor
  - getDescriptor
```
public DataSourceDescriptor getDescriptor()
```
    Get the DataSourceDescriptor for this DataSource.
    
    Returns:
    
    the descriptor
  - getDataChangeListeners
```
protected java.util.List getDataChangeListeners()
```
    Get the data change listeners
    
    Returns:
    
    Data change listeners
  - addDataChangeListener
```
public void addDataChangeListener(DataChangeListener listener)
```
    Add the data change listener
    
    Specified by:
    
    addDataChangeListener in interface DataSource
    
    Parameters:
    
    listener - listener to add
  - removeDataChangeListener
```
public void removeDataChangeListener(DataChangeListener listener)
```
    Remove the data change listener
    
    Specified by:
    
    removeDataChangeListener in interface DataSource
    
    Parameters:
    
    listener - listener to remove
  - reloadData
```
public void reloadData()
```
    Flush the cache and tell listeners we have changed. Derived classes should overwrite this method and clear out any state they may be holding. Then they should call this method to do the notification.
    
    Specified by:
    
    reloadData in interface DataSource
  - clearFileCache
```
protected void clearFileCache()
```
    Clear the cache
  - notifyDataChange
```
public void notifyDataChange()
```
    Notify all DataChangeListeners of some change to the data
    
    Specified by:
    
    notifyDataChange in interface DataSource
  - getDataContext
```
public DataContext getDataContext()
```
    Get the DataContext for this DataSource.
    
    Returns:
    
    the DataContext or null.
  - getDataSource
```
public DataSource getDataSource()
```
    This is the method defined for the DataSourceFactory interface. Just return ourself.
    
    Specified by:
    
    getDataSource in interface DataSourceFactory
    
    Returns:
    
    this
  - equals
```
public boolean equals(java.lang.Object o)
```
    See if the Object in question is equal to this DataSource.
    
    Overrides:
    
    equals in class java.lang.Object
    
    Parameters:
    
    o - Object in question
    
    Returns:
    
    true if they are equal
  - identifiedByName
```
public boolean identifiedByName(java.lang.String name)
```
    Is this datasource identified by the given label. The name may be of the form "class:classpattern" or just a pattern to match the name by
    
    Specified by:
    
    identifiedByName in interface DataSource
    
    Parameters:
    
    name - the name.
    
    Returns:
    
    true if it is
  - identifiedBy
```
public boolean identifiedBy(java.lang.Object definingObject)
```
    See if this DataSource is identified by the definingObject.
    
    Specified by:
    
    identifiedBy in interface DataSource
    
    Parameters:
    
    definingObject - definingObject to check
    
    Returns:
    
    true if this is defined by definingObject
  - getTypeName
```
public final java.lang.String getTypeName()
```
    Get the type name for this DataSource
    
    Specified by:
    
    getTypeName in interface DataSource
    
    Returns:
    
    the type name or null
  - createAutoDisplay
```
public void createAutoDisplay(java.lang.String displayType,
                              DataContext dataContext)
```
    Automatically create the given display on initialization. This used to be in the IDV but we moved it here to allow different data sources to do different things.
    
    Specified by:
    
    createAutoDisplay in interface DataSource
    
    Parameters:
    
    displayType - The display control type id.
    
    dataContext - Really, the IDV
  - initDataChoice
```
public void initDataChoice(DataChoice dataChoice)
```
    Sets the global id of the given dataChoice to be a per process unique string value. Used (for now) for persistence.
    
    Parameters:
    
    dataChoice - dataChoice to initialize
  - findDataChoice
```
public DataChoice findDataChoice(java.lang.Object id)
```
    Search through the list of DataChoice-s and return the DataChoice object whose id equals the given id parameter. If the id based search is unsuccessful then check using the name of the DataChoice.
    
    Specified by:
    
    findDataChoice in interface DataSource
    
    Parameters:
    
    id - id of DataChoice
    
    Returns:
    
    the DataChoice which has id or null
  - findDataChoices
```
public java.util.List findDataChoices(java.lang.Object id)
```
    Search through the list of DataChoice-s and return the DataChoice object whose id equals the given id parameter. If the id based search is unsuccessful then check using the name of the DataChoice.
    
    Specified by:
    
    findDataChoices in interface DataSource
    
    Parameters:
    
    id - id of DataChoice
    
    Returns:
    
    the DataChoice which has id or null
  - checkForInitAfterUnPersistence
```
protected void checkForInitAfterUnPersistence()
```
    some method to initialize
  - makeDerivedDataChoices
```
protected void makeDerivedDataChoices(java.util.List dataChoices)
```
    Add to the given list the set of derived data choices
    
    Parameters:
    
    dataChoices - base list of choices
  - getDataChoices
```
public java.util.List getDataChoices()
```
    This will lazily create the actual list of DataChoice-s with a call to doMakeDataChoices which creates the DataChoice objects concretely defined by this DataSource (e.g., the fields within an netCdf file). Any DerivedDataChoices that are applicable to the initial set of DataChoice-s is added to the list. Then each DataChoice is initialized with a call to initDataChoice.
    
    Specified by:
    
    getDataChoices in interface DataSource
    
    Returns:
    
    List of DataChoices
  - getAllLevels
```
public java.util.List getAllLevels(DataChoice dataChoice)
```
    Get the list of all levels available from this DataSource
    
    Specified by:
    
    getAllLevels in interface DataSource
    
    Parameters:
    
    dataChoice - The data choice to get levels for
    
    Returns:
    
    List of all available levels
  - getAllLevels
```
public java.util.List getAllLevels(DataChoice dataChoice,
                                   DataSelection dataSelection)
```
    Get all of the levels
    
    Specified by:
    
    getAllLevels in interface DataSource
    
    Parameters:
    
    dataChoice - The data choice to get levels for
    
    dataSelection - data selection
    
    Returns:
    
    list of levels.
  - clearTimes
```
public void clearTimes()
```
    Clear the times list
  - getAllDateTimes
```
public java.util.List getAllDateTimes()
```
    Return an array of DateTimes representing all the times in the DataSource. This lazily creates a list, timesList, using a call to doMakeDateTimes.
    
    Specified by:
    
    getAllDateTimes in interface DataSource
    
    Returns:
    
    array of DateTimes (may be null)
  - getSelectedDateTimes
```
public java.util.List getSelectedDateTimes()
```
    Get the list of selected times.
    
    Specified by:
    
    getSelectedDateTimes in interface DataSource
    
    Returns:
    
    list of selected times
  - getSelectedDateTimes
```
public java.util.List getSelectedDateTimes(DataChoice dataChoice)
```
    Get the selected times for the given DataChoice.
    
    Specified by:
    
    getSelectedDateTimes in interface DataSource
    
    Parameters:
    
    dataChoice - DataChoice in question
    
    Returns:
    
    List of selected times
  - getAllDateTimes
```
public java.util.List getAllDateTimes(DataChoice dataChoice)
```
    Get all the times for the given DataChoice
    
    Specified by:
    
    getAllDateTimes in interface DataSource
    
    Parameters:
    
    dataChoice - DataChoice in question
    
    Returns:
    
    List of all times for that choice
  - getDataSelection
```
public DataSelection getDataSelection()
```
    Return the DataSelection for this DataSource. The DataSelection represents the default criteria used for refining the getData calls. For example, the user can set the date/times to be used for this DataSource. This list of times is held in the DataSelection member.
    
    Specified by:
    
    getDataSelection in interface DataSource
    
    Returns:
    
    the DataSelection for this DataSource
  - setDataSelection
```
public void setDataSelection(DataSelection s)
```
    Set the DataSelection for this DataSource.
    
    Parameters:
    
    s - new selection
  - holdsDateTimes
```
public static boolean holdsDateTimes(java.util.List selectedTimes)
```
    See if the selection list is a set of times or indices
    
    Parameters:
    
    selectedTimes - list to check
    
    Returns:
    
    true if there are any times
  - holdsIndices
```
public static boolean holdsIndices(java.util.List selectedTimes)
```
    A utility to determine whether the given list holds a set of Integer indices.
    
    Parameters:
    
    selectedTimes - A list of Integer indices or DateTime.
    
    Returns:
    
    Does the given list hold indices.
  - getDateTimes
```
public static java.util.List getDateTimes(java.util.List selected,
                                          java.util.List allTimes)
```
    A utility method that returns a list of times. If selected holds DateTime objects then just return selected. Else selected holds Integer indices into the allTimes list.
    
    Parameters:
    
    selected - Either a list of DateTime or a list of Integer indices.
    
    allTimes - The source list of DataTimes that may be indexed by selected.
    
    Returns:
    
    A list of DateTime-s.
  - getAbsoluteDateTimes
```
public java.util.List getAbsoluteDateTimes(java.util.List selected)
```
    Get the absolute times.
    
    Parameters:
    
    selected - list of selected times
    
    Returns:
    
    List of absolute times
  - setDateTimeSelection
```
public void setDateTimeSelection(java.util.List selectedTimes)
```
    Set the list of selected times for this data source. This is used for XML persistence.
    
    Specified by:
    
    setDateTimeSelection in interface DataSource
    
    Parameters:
    
    selectedTimes - List of selected times
  - getDateTimeSelection
```
public java.util.List getDateTimeSelection()
```
    Return the list of times held by the DataSelection member.
    
    Specified by:
    
    getDateTimeSelection in interface DataSource
    
    Returns:
    
    DataSelection times
  - selectTimesFromList
```
public java.util.List<visad.DateTime> selectTimesFromList(DataSelection dataSelection,
                                                          java.util.List sourceTimes,
                                                          java.util.List<visad.DateTime> selectionTimes)
                                                   throws java.lang.Exception
```
    For each time in selectionTimes this method finds the closest time in sourceTimes
    
    Parameters:
    
    dataSelection - The data selection. Not used right now.
    
    sourceTimes - Needs to be a list of DateTime or Date objects
    
    selectionTimes - The selection times
    
    Returns:
    
    List of times from sourceTimes that correspond to the selectionTimes
    
    Throws:
    
    java.lang.Exception - On badness
  - getTimesFromDataSelection
```
protected java.util.List getTimesFromDataSelection(DataSelection givenDataSelection,
                                                   DataChoice dataChoice)
```
    If givenDataSelection is non-null and has a non-null times list then return that. Else return the times list from the myDataSelection member variable.
    
    Parameters:
    
    givenDataSelection - the given DataSelection
    
    dataChoice - the given DataChoice
    
    Returns:
    
    appropriate list of times
  - getAllTimesForTimeDriver
```
protected java.util.List<visad.DateTime> getAllTimesForTimeDriver(DataChoice dataChoice,
                                                                  DataSelection selection,
                                                                  java.util.List<visad.DateTime> timeDriverTimes)
```
    Get the list of times to compare to the time driver times
    
    Parameters:
    
    dataChoice - the data choice
    
    selection - the selection (for things like level)
    
    timeDriverTimes - the time driver times (use range for server query)
    
    Returns:
    
    the list of times for comparison
  - getData
```
public visad.Data getData(DataChoice dataChoice,
                          DataCategory dataCategory,
                          java.util.Hashtable requestProperties)
                   throws visad.VisADException,
                          java.rmi.RemoteException
```
    Get the data applicable to the DataChoice and selection criteria.
    
    Specified by:
    
    getData in interface DataSource
    
    Parameters:
    
    dataChoice - choice that defines the data
    
    dataCategory - the data category
    
    requestProperties - extra request properties
    
    Returns:
    
    the associated data
    
    Throws:
    
    java.rmi.RemoteException - Java RMI problem
    
    visad.VisADException - VisAD problem
  - showWaitDialog
```
protected void showWaitDialog(int count)
```
    Show a wait dialog. Subclasses should implement to use.
    
    Parameters:
    
    count - wait time
  - tick
```
protected void tick()
```
    Stub method. Subclasses should implement.
  - getOutstandingGetDataCalls
```
public static int getOutstandingGetDataCalls()
```
    How many get data calls are we currently waiting on
    
    Returns:
    
    Outstanding calls
  - incrOutstandingGetDataCalls
```
public static void incrOutstandingGetDataCalls()
```
    Increment the static count of get data calls
  - decrOutstandingGetDataCalls
```
public static void decrOutstandingGetDataCalls()
```
    Decrement the static count of get data calls
  - createCacheKey
```
protected java.lang.Object createCacheKey(DataChoice dataChoice,
                                          DataSelection dataSelection,
                                          java.util.Hashtable requestProperties)
```
    Utility to create the key used when caching
    
    Parameters:
    
    dataChoice - data choice
    
    dataSelection - data selection
    
    requestProperties - properties on request
    
    Returns:
    
    The object to cache on
  - getData
```
public visad.Data getData(DataChoice dataChoice,
                          DataCategory category,
                          DataSelection incomingDataSelection,
                          java.util.Hashtable requestProperties)
                   throws visad.VisADException,
                          java.rmi.RemoteException
```
    Get the data applicable to the DataChoice and selection criteria.
    
    Specified by:
    
    getData in interface DataSource
    
    Parameters:
    
    dataChoice - choice that defines the data
    
    category - the data category
    
    incomingDataSelection - DataSelection for subsetting
    
    requestProperties - extra request properties
    
    Returns:
    
    the associated data
    
    Throws:
    
    java.rmi.RemoteException - Java RMI problem
    
    visad.VisADException - VisAD problem
  - getDataInner
```
protected visad.Data getDataInner(DataChoice dataChoice,
                                  DataCategory category,
                                  DataSelection dataSelection)
                           throws visad.VisADException,
                                  java.rmi.RemoteException
```
    Have this one around for other, non-unidata, datasource implementations.
    
    Parameters:
    
    dataChoice - The data choice that identifies the requested data.
    
    category - The data category of the request.
    
    dataSelection - Identifies any subsetting of the data.
    
    Returns:
    
    The visad.Data object
    
    Throws:
    
    java.rmi.RemoteException - Java RMI problem
    
    visad.VisADException - VisAD problem
  - getDataInner
```
protected visad.Data getDataInner(DataChoice dataChoice,
                                  DataCategory category,
                                  DataSelection dataSelection,
                                  java.util.Hashtable requestProperties)
                           throws visad.VisADException,
                                  java.rmi.RemoteException
```
    Actually get the data identified by the given DataChoce. The default is to call the getDataInner that does not take the requestProperties. This allows other, non unidata.data DataSource-s (that follow the old API) to work.
    
    Parameters:
    
    dataChoice - The data choice that identifies the requested data.
    
    category - The data category of the request.
    
    dataSelection - Identifies any subsetting of the data.
    
    requestProperties - Hashtable that holds any detailed request properties.
    
    Returns:
    
    The visad.Data object
    
    Throws:
    
    java.rmi.RemoteException - Java RMI problem
    
    visad.VisADException - VisAD problem
  - getNextId
```
public int getNextId()
```
    A unique identifier for DataSource objects.
    
    Returns:
    
    the next unique id
  - setName
```
public void setName(java.lang.String n)
```
    Set the name of this DataSource
    
    Parameters:
    
    n - new name
  - setTemplateName
```
public void setTemplateName(java.lang.String n)
```
    Keep around for legacy bundles
    
    Parameters:
    
    n - template name
  - getName
```
public java.lang.String getName()
```
    Returns the human readable name of this DataSource. This is the second argument of DataSourceImpl(DataSourceDescriptor, String, String, Hashtable).
    
    Specified by:
    
    getName in interface DataSource
    
    Returns:
    
    The human-readable specification of this data-source.
  - setDescription
```
public void setDescription(java.lang.String n)
```
    Set the description for this DataSource
    
    Parameters:
    
    n - the description
  - getDescription
```
public java.lang.String getDescription()
```
    Return the human readable description of this DataSource
    
    Specified by:
    
    getDescription in interface DataSource
    
    Returns:
    
    the description
  - getPartialDescription
```
public java.lang.String getPartialDescription()
```
    Return the human readable description of this DataSource
    
    Specified by:
    
    getPartialDescription in interface DataSource
    
    Returns:
    
    the description
  - getFullDescription
```
public java.lang.String getFullDescription()
```
    Get the full description for this data source. Subclasses should override if they want something other than the default. This is what gets displayed in the details.
    
    Specified by:
    
    getFullDescription in interface DataSource
    
    Returns:
    
    the full description of this data source (description + name)
  - addDataChoice
```
protected void addDataChoice(DataChoice choice)
```
    Insert the new DataChoice into the dataChoice list.
    
    Parameters:
    
    choice - new choice to add
  - expandIfNeeded
```
public void expandIfNeeded(CompositeDataChoice cdc)
```
    Gets called by the DataSelection tree gui when a CompositeDataChoice is first opened. This allows us to incrementally expand these nested data choices.
    
    Specified by:
    
    expandIfNeeded in interface DataSource
    
    Parameters:
    
    cdc - the data choice
  - removeDataChoice
```
protected void removeDataChoice(DataChoice choice)
```
    Remove the choice
    
    Parameters:
    
    choice - the choice
  - replaceDataChoice
```
public void replaceDataChoice(DataChoice oldDataChoice,
                              DataChoice newDataChoice)
```
    Replace the given child with the given chold
    
    Parameters:
    
    oldDataChoice - The old data choice
    
    newDataChoice - The new one
  - doMakeDataChoices
```
protected void doMakeDataChoices()
```
    A stub for the derived classes to overwrite. This is not abstract because there are some derived classes (e.g., ListDataSource) that do not create any DataChoice-s
  - doMakeDateTimes
```
protected java.util.List doMakeDateTimes()
```
    A stub for the derived classes to overwrite. This is not abstract because there are some derived classes (e.g., TextDataSource) that do not create have any times
    
    Returns:
    
    empty list from this class
  - logException
```
public void logException(java.lang.String msg,
                         java.lang.Exception exc)
```
    Shortcut to logging facility for subclasses to use
    
    Parameters:
    
    msg - error message
    
    exc - error Exception
  - logException
```
public void logException(java.lang.String msg,
                         java.lang.Exception exc,
                         byte[] fileBytes)
```
    Log the exception with the file bytes
    
    Parameters:
    
    msg - message
    
    exc - exception
    
    fileBytes - bytes to write to a tmp file. May be null.
  - setAlias
```
public void setAlias(java.lang.String value)
```
    Set the Alias property.
    
    Specified by:
    
    setAlias in interface DataSource
    
    Parameters:
    
    value - The new value for Alias
  - getAlias
```
public java.lang.String getAlias()
```
    Get the Alias property.
    
    Specified by:
    
    getAlias in interface DataSource
    
    Returns:
    
    The Alias
  - getActions
```
public java.util.List getActions()
```
    Get any Action-s associated with this DataSource. The actions can be used to create menus, buttons, etc. Subclasses should implement this method making sure to call super.getActions()
    
    Specified by:
    
    getActions in interface DataSource
    
    Returns:
    
    list of actions
  - showPropertiesDialog
```
public boolean showPropertiesDialog()
```
    Show the properties dialog
    
    Specified by:
    
    showPropertiesDialog in interface DataSource
    
    Returns:
    
    Was ok pressed
  - showPropertiesDialog
```
public boolean showPropertiesDialog(java.lang.String initTabName)
```
    Show the properties dialog
    
    Parameters:
    
    initTabName - If non null then show this tab
    
    Returns:
    
    Was ok pressed
  - canSaveDataToLocalDisk
```
public boolean canSaveDataToLocalDisk()
```
    Is this data source capable of saving its data to local disk
    
    Specified by:
    
    canSaveDataToLocalDisk in interface DataSource
    
    Returns:
    
    Can save to local disk
  - canChangeData
```
public boolean canChangeData()
```
    Can the data be changed? Subclasses should override if they can't.
    
    Returns:
    
    true
  - saveDataToLocalDisk
```
protected java.util.List saveDataToLocalDisk(java.lang.String filePrefix,
                                             java.lang.Object loadId,
                                             boolean changeLinks)
                                      throws java.lang.Exception
```
    Save the data source files to local disk
    
    Parameters:
    
    filePrefix - This is the directory path to write the files to with the unique file identifier append to it
    
    loadId - For stopping the load through the JobManager
    
    changeLinks - Should this data source also change its internal data references
    
    Returns:
    
    List of the files that were written
    
    Throws:
    
    java.lang.Exception - On badness
  - saveDataToLocalDisk
```
public java.util.List saveDataToLocalDisk()
```
    Save dat to local disk
    
    Returns:
    
    list of files?
  - saveDataToLocalDisk
```
public java.util.List saveDataToLocalDisk(boolean changeLinks,
                                          java.lang.String uniqueFilePath)
```
    Save the data to local disk. If the uniqueFilePath is null this prompts the user for a directory and a file prefix.
    
    Specified by:
    
    saveDataToLocalDisk in interface DataSource
    
    Parameters:
    
    changeLinks - Should this data source also change its internal data references
    
    uniqueFilePath - Where to write the files to
    
    Returns:
    
    List of the files that were written
  - getSaveDataFileLabel
```
protected java.lang.String getSaveDataFileLabel()
```
    Get the save data to a file label
    
    Returns:
    
    the save data to a file label
  - beginWritingDataToLocalDisk
```
protected java.lang.Object beginWritingDataToLocalDisk(java.lang.String msg)
```
    Start the JobManager load dialog
    
    Parameters:
    
    msg - Message to show in dialog
    
    Returns:
    
    The JobManager load id
  - endWritingDataToLocalDisk
```
protected void endWritingDataToLocalDisk(java.lang.Object loadId)
```
    Stop the JobManager load dialog
    
    Parameters:
    
    loadId - The JobManager load id
  - getDataPrefix
```
protected java.lang.String getDataPrefix()
```
    Get the file prefix to use for when saving data to local disk
    
    Returns:
    
    File prefix to use
  - getLocalDirectory
```
protected java.lang.String getLocalDirectory(java.lang.String label,
                                             java.lang.String prefix)
```
    Get the directory to write the localized data files to
    
    Parameters:
    
    label - Label to show user
    
    prefix - File prefix
    
    Returns:
    
    Path with the file prefix that the user specified appended
  - showPropertiesDialog
```
public boolean showPropertiesDialog(java.lang.String initTabName,
                                    boolean modal)
```
    Show the dialog
    
    Parameters:
    
    initTabName - What tab should we show. May be null.
    
    modal - Is dialog modal
    
    Returns:
    
    success
  - propertiesChanged
```
protected void propertiesChanged()
```
    The properties changed
  - handlePropertiesAction
```
public void handlePropertiesAction(java.lang.String cmd)
```
    Handle the properties action
    
    Parameters:
    
    cmd - Action
  - getPropertiesHeader
```
protected javax.swing.JComponent getPropertiesHeader(java.lang.String label)
```
    Utility to create a header for the properties dialog
    
    Parameters:
    
    label - Header label
    
    Returns:
    
    Header
  - getPropertiesComponents
```
public void getPropertiesComponents(java.util.List comps)
```
    Add the gui components into the list for the properties dialog
    
    Parameters:
    
    comps - List of components
  - canCacheDataToDisk
```
public boolean canCacheDataToDisk()
```
    Can this data source cache its
    
    Returns:
    
    can cache data to disk
  - canDoGeoSelection
```
public boolean canDoGeoSelection()
```
    Can this datasource do the geoselection subsetting and decimation
    
    Specified by:
    
    canDoGeoSelection in interface DataSource
    
    Returns:
    
    _can do geo subsetting
  - canDoGeoSelectionStride
```
protected boolean canDoGeoSelectionStride()
```
    Used for the geo subsetting property gui as to whether to show the stride or not
    
    Returns:
    
    default is true
  - getDataSelectionComponents
```
public java.util.List<DataSelectionComponent> getDataSelectionComponents(DataChoice dataChoice)
```
    A hook to allow this data source to add data selection components to the IDV field selector
    
    Specified by:
    
    getDataSelectionComponents in interface DataSource
    
    Parameters:
    
    dataChoice - the data choice
    
    Returns:
    
    list of components
  - initDataSelectionComponents
```
protected void initDataSelectionComponents(java.util.List<DataSelectionComponent> components,
                                           DataChoice dataChoice)
```
    Add any data selection components
    
    Parameters:
    
    components - list of components
    
    dataChoice - the data choice
  - getExtraTimesComponent
```
protected javax.swing.JComponent getExtraTimesComponent()
```
    This gets pu at the bottom of the times properties tab
    
    Returns:
    
    extra comp
  - addPropertiesTabs
```
public void addPropertiesTabs(javax.swing.JTabbedPane tabbedPane)
```
    Add any extra tabs into the properties tab
    
    Parameters:
    
    tabbedPane - The properties tab
  - addReloadTab
```
protected void addReloadTab(javax.swing.JTabbedPane tabbedPane)
```
    Add a reload tab
    
    Parameters:
    
    tabbedPane - the reload tab
  - doMakeGeoSubsetPropertiesComponent
```
protected javax.swing.JComponent doMakeGeoSubsetPropertiesComponent()
```
    Make the geo subset properties component
    
    Returns:
    
    the component
  - updateDetailsText
```
protected void updateDetailsText()
```
    Update the properties dialog details page
  - doMakeGeoSelectionPanel
```
public GeoSelectionPanel doMakeGeoSelectionPanel()
```
    Make the subset component
    
    Returns:
    
    The subset properties component
  - doMakeGeoSelectionPanel
```
public GeoSelectionPanel doMakeGeoSelectionPanel(boolean forProperties)
```
    Make the geoselection panel
    
    Parameters:
    
    forProperties - true if for the properties widget
    
    Returns:
    
    the panel
  - doMakeGeoSelectionPanel
```
public GeoSelectionPanel doMakeGeoSelectionPanel(boolean forProperties,
                                                 GeoSelection geoSelection)
```
    Make the geoselection panel
    
    Parameters:
    
    forProperties - true if for the properties widget
    
    geoSelection - geoselection to populate the panel
    
    Returns:
    
    the panel
  - getExtraGeoSelectionComponent
```
protected javax.swing.JComponent getExtraGeoSelectionComponent()
```
    Return the extra component for the geo selection panel. Example: This is ued by the grid data source to show the grid size label
    
    Returns:
    
    null_
  - getSampleDataProjection
```
protected ucar.unidata.geoloc.ProjectionImpl getSampleDataProjection()
```
    Used for the geo subsetting property gui
    
    Returns:
    
    default is null
  - canDoGeoSelectionMap
```
protected boolean canDoGeoSelectionMap()
```
    Used for the geo subsetting property gui as to whether to show the map selection or not
    
    Returns:
    
    default is true
  - applyProperties
```
public boolean applyProperties()
```
    Apply properties components
    
    Returns:
    
    false if something failed and we need to keep showing the dialog
  - addActions
```
protected void addActions(java.util.List actions)
```
    Get any Action-s associated with this DataSource. The actions can be used to create menus, buttons, etc. Subclasses should implement this method making sure to call super.getActions()
    
    Parameters:
    
    actions - List of actions
  - makeSaveLocalActions
```
protected void makeSaveLocalActions(java.util.List actions)
```
    Make save local actions
    
    Parameters:
    
    actions - list of actions
  - getFileFilterForPolling
```
protected javax.swing.filechooser.FileFilter getFileFilterForPolling()
```
    Return the file fitler that the polling info uses.
    
    Returns:
    
    Polling file filter
  - getLocationForPolling
```
protected java.io.File getLocationForPolling()
```
    Get the location, either a file or a directory, that is where we poll on.
    
    Returns:
    
    File or dir to poll.
  - getLocationsForPolling
```
protected java.util.List getLocationsForPolling()
```
    Get the locations to use for polling
    
    Returns:
    
    locations for polling
  - canPoll
```
public boolean canPoll()
```
    See if this data source can poll
    
    Returns:
    
    true if can poll
  - isPolling
```
protected boolean isPolling()
```
    Are we currently polling.
    
    Returns:
    
    Are we polling
  - setPollingInfo
```
public void setPollingInfo(PollingInfo value)
```
    Set the PollingInfo property.
    
    Parameters:
    
    value - The new value for PollingInfo
  - getPollingInfo
```
public PollingInfo getPollingInfo()
```
    Get the PollingInfo property.
    
    Returns:
    
    The PollingInfo
  - hasPollingInfo
```
protected boolean hasPollingInfo()
```
    Do we have polling info object
    
    Returns:
    
    have polling info object
  - setDirectory
```
public void setDirectory(java.lang.String n)
```
    Deprecated.
    
    noop. Keep around for legacy bundles.
    
    Parameters:
    
    n - directory name
  - setPollLocation
```
public void setPollLocation(java.lang.String value)
```
    Deprecated.
    
    noop. Keep around for legacy bundles.
    
    Parameters:
    
    value - The new value for PollLocation
  - convertToFilesIfDirectory
```
protected java.util.List convertToFilesIfDirectory(java.util.List sources)
```
    If the given list is of size 1 and it is a directory then find all files in the directory that match the filePatternForPolling and return them. Else just return the list.
    
    Parameters:
    
    sources - List of File-s or String file names
    
    Returns:
    
    List of file names or the given list
  - getMostRecentFiles
```
protected java.util.List getMostRecentFiles(java.io.File dir,
                                            int cnt)
```
    Find the most recent cnt number of files in the given directory that match the fileFIlterForPolling
    
    Parameters:
    
    dir - Directory to look at. If it is not a directory then use its parent.
    
    cnt - Number of files to find.
    
    Returns:
    
    List of cnt File-s
  - setAskToUpdate
```
public void setAskToUpdate(boolean value)
```
    Deprecated. Keep around for bundles
    
    Set the AskToUpdate property.
    
    Parameters:
    
    value - The new value for AskToUpdate
  - setDataIsRelative
```
public void setDataIsRelative(boolean value)
```
    Set the DataIsEditable property.
    
    Parameters:
    
    value - The new value for DataIsEditable
  - setDataIsEditable
```
public void setDataIsEditable(boolean value)
```
    Set the DataIsEditable property.
    
    Specified by:
    
    setDataIsEditable in interface DataSource
    
    Parameters:
    
    value - The new value for DataIsEditable
  - getDataIsEditable
```
public boolean getDataIsEditable()
```
    Get the DataIsEditable property.
    
    Specified by:
    
    getDataIsEditable in interface DataSource
    
    Returns:
    
    The DataIsEditable
  - getDataPaths
```
public java.util.List getDataPaths()
```
    Get the file paths (or urls or whatever) that are to be changed when we re unpersisted and are in data editable mode
    
    Specified by:
    
    getDataPaths in interface DataSource
    
    Returns:
    
    file paths to changed
  - setDataEditableStrings
```
public void setDataEditableStrings(java.util.List strings)
```
    Set the changed file or url paths
    
    Parameters:
    
    strings - List of paths
  - setDataRelativeStrings
```
public void setDataRelativeStrings(java.util.List strings)
```
    Used when loading from a bundle with relative file paths
    
    Parameters:
    
    strings - Relative file paths
  - getPathsThatCanBeRelative
```
public java.util.List getPathsThatCanBeRelative()
```
    Return the paths that can be saved off relative to wehre the bundle is. The default here is to return null.
    
    Returns:
    
    File paths that can be relative
  - setRelativePaths
```
public void setRelativePaths(java.util.List value)
```
    Set the RelativePaths property.
    
    Parameters:
    
    value - The new value for RelativePaths
  - getRelativePaths
```
public java.util.List getRelativePaths()
```
    Get the RelativePaths property.
    
    Returns:
    
    The RelativePaths
  - updateState
```
public void updateState(java.lang.Object newObject,
                        java.util.Hashtable newProperties)
```
    Update the state
    
    Specified by:
    
    updateState in interface DataSource
    
    Parameters:
    
    newObject - new object
    
    newProperties - new properties to add
  - resetTmpState
```
public void resetTmpState()
```
    This gets called after we have been saved in a zidv bundle to reset us back to any original state
    
    Specified by:
    
    resetTmpState in interface DataSource
  - setTmpPaths
```
public void setTmpPaths(java.util.List value)
```
    Set the TmpPaths property.
    
    Specified by:
    
    setTmpPaths in interface DataSource
    
    Parameters:
    
    value - The new value for TmpPaths
  - getTmpPaths
```
public java.util.List getTmpPaths()
```
    Get the TmpPaths property.
    
    Specified by:
    
    getTmpPaths in interface DataSource
    
    Returns:
    
    The TmpPaths
  - getNameForDataSource
```
public static java.lang.String getNameForDataSource(DataSource ds,
                                                    int length,
                                                    boolean alwaysDoIt)
```
    A helper method to find the label to use for the given DataSource. If the length of the toString of the data source is less than 30 just use that. Else be a bit smart about truncating it.
    
    Parameters:
    
    ds - The data soruce to get a label for
    
    length - String length to clip to
    
    alwaysDoIt - If false then we only lip if this is a file or url
    
    Returns:
    
    The label
  - setCacheDataToDisk
```
public void setCacheDataToDisk(boolean value)
```
    Set the CacheFlatFields property.
    
    Parameters:
    
    value - The new value for CacheFlatFields
  - getCacheDataToDisk
```
public boolean getCacheDataToDisk()
```
    Get the CacheFlatFields property.
    
    Returns:
    
    The CacheFlatFields
  - getDataCachePath
```
public java.lang.String getDataCachePath()
```
    Where do we write cached data to
    
    Returns:
    
    cache path
  - setCacheClearDelay
```
public void setCacheClearDelay(long value)
```
    Set the CacheClearDelay property.
    
    Parameters:
    
    value - The new value for CacheClearDelay
  - getCacheClearDelay
```
public long getCacheClearDelay()
```
    Get the CacheClearDelay property.
    
    Returns:
    
    The CacheClearDelay
  - showPasswordDialog
```
public boolean showPasswordDialog(java.lang.String title,
                                  java.lang.String label)
```
    Show the password dialog
    
    Parameters:
    
    title - title
    
    label - label
    
    Returns:
    
    true if successful
  - setUserName
```
public void setUserName(java.lang.String value)
```
    Set the UserName property.
    
    Parameters:
    
    value - The new value for UserName
  - getUserName
```
public java.lang.String getUserName()
```
    Get the UserName property.
    
    Returns:
    
    The UserName
  - setPassword
```
public void setPassword(java.lang.String value)
```
    Set the Password property.
    
    Parameters:
    
    value - The new value for Password
  - getPassword
```
public java.lang.String getPassword()
```
    Get the Password property.
    
    Returns:
    
    The Password
  - setEverChangedName
```
public void setEverChangedName(boolean value)
```
    Set the EverChangedName property.
    
    Parameters:
    
    value - The new value for EverChangedName
  - getEverChangedName
```
public boolean getEverChangedName()
```
    Get the EverChangedName property.
    
    Returns:
    
    The EverChangedName
  - setDefaultSave
```
public void setDefaultSave(boolean defaultsave)
```
    Sets the default save. The idea here is the user should just be allowed to select a default option when saving a zidv bundle rather than being asked additional questions.
    
    Specified by:
    
    setDefaultSave in interface DataSource
    
    Parameters:
    
    defaultsave - the new default save
  - getDefaultSave
```
public boolean getDefaultSave()
```
    Gets the default save.
    
    Returns:
    
    the default save

Class DataSourceImpl

Field Summary

Fields inherited from interface ucar.unidata.data.DataSource

Constructor Summary

Method Summary

Methods inherited from class ucar.unidata.collab.SharableImpl

Methods inherited from class java.lang.Object

Methods inherited from interface ucar.unidata.data.DataSource

Field Detail

PARAM_SHOW_YES

PARAM_SHOW_HIDE

PARAM_SHOW_NO

dataCacheKey

dataChoices

changeDataPathsCbx

geoSelectionPanel

haveBeenUnPersisted

okToContinue

Constructor Detail

DataSourceImpl

DataSourceImpl

DataSourceImpl

Method Detail

reloadData

reloadProperties

convertSourceFile

canDoFieldMask

canDoAllLevels

getIdv

loadFieldMask

loadFieldMask

applyFieldMask

canAddCurrentName

writeFieldMaskFile

writeFieldMaskFile

canShowParameter

setObjectProperties

setObjectProperty

getCompositeDataChoices

initAfter

initAfterUnpersistence

initAfterCreation

setNewFiles

createElement

initFromXml

getProperties

setProperties

removeProperty

getProperty

setProperty

getProperty

getProperty

getProperty

getProperty

getProperty

getProperty

setProperty

getNeedToShowErrorToUser

getInError

setInError

setInError

setInError

getErrorMessage

clearCachedData

flushCache

putCache

putCache

getCache

getCache

removeCache

shouldCache

shouldCache

doRemove

loadLatestFile

doDirectory

newFilesFromPolling

newFileFromPolling

toString

toStringTruncated

getid