ucar.nc2.dt.grid

Class GridDataset

java.lang.Object

ucar.nc2.dt.grid.GridDataset

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable, GridDataset, TypedDataset, FeatureDataset, FileCacheable

public class GridDataset
extends java.lang.Object
implements GridDataset, FeatureDataset

Make a NetcdfDataset into a collection of GeoGrids with Georeferencing coordinate systems.

A variable will be made into a GeoGrid if it has a Georeferencing coordinate system, using GridCoordSys.isGridCoordSys(), and it has no extra dimensions, ie GridCoordSys.isComplete( var) is true. If it has multiple Georeferencing coordinate systems, any one that is a product set will be given preference.

Example:

 GridDataset gridDs = GridDataset.open (uriString);
 List grids = gridDs.getGrids();
 for (int i=0; i<grids.size(); i++) {
   GeoGrid grid = (Geogrid) grids.get(i);
 }
 

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	GridDataset.Gridset This is a set of GeoGrids with the same GeoCoordSys.

Field Summary

Fields

Modifier and Type	Field and Description
protected FileCacheIF	fileCache

Constructor Summary

Constructors

Constructor and Description
GridDataset(NetcdfDataset ncd) Create a GridDataset from a NetcdfDataset.
GridDataset(NetcdfDataset ncd, java.util.Formatter parseInfo) Create a GridDataset from a NetcdfDataset.

Method Summary

Modifier and Type	Method and Description
void	calcBounds() Caclulate date range and bounding box, even if the data has to be scanned.
void	close() Close all resources associated with this dataset.
static GridDataset	factory(java.lang.String netcdfFileURI) Deprecated. : use GridDataset.open().
Attribute	findGlobalAttributeIgnoreCase(java.lang.String name) Return the global attribute with the given name, ignoring case.
GeoGrid	findGridByName(java.lang.String fullName) find the named GeoGrid.
GeoGrid	findGridByShortName(java.lang.String shortName) find the named GeoGrid.
GridDatatype	findGridDatatype(java.lang.String name) find the named GridDatatype.
GeoGrid	findGridDatatypeByAttribute(java.lang.String attName, java.lang.String attValue)
LatLonRect	getBoundingBox() The boundingBox for the entire dataset.
CalendarDate	getCalendarDateEnd() Ending Calendar date for the entire dataset.
CalendarDateRange	getCalendarDateRange() Calendar Date range for the entire dataset.
CalendarDate	getCalendarDateStart() Starting Calendar date for the entire dataset.
VariableSimpleIF	getDataVariable(java.lang.String shortName) Get the named data Variable.
java.util.List<VariableSimpleIF>	getDataVariables() The data Variables available in this dataset.
DateRange	getDateRange() Deprecated. use getCalendarDateRange
java.lang.String	getDescription() Text information about this dataset.
java.lang.String	getDetailInfo() Get Details about the dataset.
void	getDetailInfo(java.util.Formatter buff) Show debug / underlying implementation details
java.util.Date	getEndDate() Deprecated. use getEndCalendarDate
FeatureType	getFeatureType() Contains collections of this FeatureType.
java.util.List<Attribute>	getGlobalAttributes() List of global attributes.
java.util.List<GridDatatype>	getGrids() get the list of GridDatatype objects contained in this dataset.
java.util.List<GridDataset.Gridset>	getGridsets() Return GridDatatype objects grouped by GridCoordSys.
java.lang.String	getImplementationName() Show who is implementing
long	getLastModified() Returns the time that the underlying file(s) were last modified.
java.lang.String	getLocation() The URI location of the dataset
java.lang.String	getLocationURI()
java.lang.String	getName() the name of the dataset is the last part of the location
NetcdfDataset	getNetcdfDataset()
NetcdfFile	getNetcdfFile() Return underlying NetcdfFile, or null if none.
java.util.Date	getStartDate() Deprecated. use getStartCalendarDate
java.lang.String	getTitle() Title of the dataset.
static GridDataset	open(java.lang.String location) Open a netcdf dataset, using NetcdfDataset.defaultEnhanceMode plus CoordSystems and turn into a GridDataset.
static GridDataset	open(java.lang.String location, java.util.Set<NetcdfDataset.Enhance> enhanceMode) Open a netcdf dataset, using NetcdfDataset.defaultEnhanceMode plus CoordSystems and turn into a GridDataset.
void	reacquire()
void	release()
void	setFileCache(FileCacheIF fileCache) If the FileCache is not null, FileCacheable.close() must call FileCache.release()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

fileCache

protected FileCacheIF fileCache

Constructor Detail

GridDataset

public GridDataset(NetcdfDataset ncd)
            throws java.io.IOException

Create a GridDataset from a NetcdfDataset.

Parameters:

ncd - underlying NetcdfDataset, will do Enhance.CoordSystems if not already done.

Throws:

java.io.IOException - on read error

GridDataset

public GridDataset(NetcdfDataset ncd,
                   java.util.Formatter parseInfo)
            throws java.io.IOException

Create a GridDataset from a NetcdfDataset.

Parameters:

ncd - underlying NetcdfDataset, will do Enhance.CoordSystems if not already done.

parseInfo - put parse info here, may be null

Throws:

java.io.IOException - on read error

Method Detail

open

public static GridDataset open(java.lang.String location)
                        throws java.io.IOException

Open a netcdf dataset, using NetcdfDataset.defaultEnhanceMode plus CoordSystems and turn into a GridDataset.

Parameters:

location - netcdf dataset to open, using NetcdfDataset.acquireDataset().

Returns:

GridDataset

Throws:

java.io.IOException - on read error

See Also:

NetcdfDataset.acquireDataset(java.lang.String, ucar.nc2.util.CancelTask)

open

public static GridDataset open(java.lang.String location,
                               java.util.Set<NetcdfDataset.Enhance> enhanceMode)
                        throws java.io.IOException

Open a netcdf dataset, using NetcdfDataset.defaultEnhanceMode plus CoordSystems and turn into a GridDataset.

Parameters:

location - netcdf dataset to open, using NetcdfDataset.acquireDataset().

enhanceMode - open netcdf dataset with this enhanceMode

Returns:

GridDataset

Throws:

java.io.IOException - on read error

See Also:

NetcdfDataset.acquireDataset(java.lang.String, ucar.nc2.util.CancelTask)

getTitle

public java.lang.String getTitle()

Description copied from interface: FeatureDataset

Title of the dataset.

Specified by:

getTitle in interface TypedDataset

Specified by:

getTitle in interface FeatureDataset

Returns:

Title of the dataset.

getDescription

public java.lang.String getDescription()

Description copied from interface: FeatureDataset

Text information about this dataset.

Specified by:

getDescription in interface TypedDataset

Specified by:

getDescription in interface FeatureDataset

Returns:

Text information about this dataset.

getLocation

public java.lang.String getLocation()

Description copied from interface: FeatureDataset

The URI location of the dataset

Specified by:

getLocation in interface FeatureDataset

Specified by:

getLocation in interface FileCacheable

Returns:

the URI location of the dataset, or null

getLocationURI

public java.lang.String getLocationURI()

Specified by:

getLocationURI in interface TypedDataset

Returns:

The URI location of the dataset

getDateRange

public DateRange getDateRange()

Deprecated. use getCalendarDateRange

Description copied from interface: FeatureDataset

Date range for the entire dataset.

Specified by:

getDateRange in interface FeatureDataset

Returns:

the date range for the entire dataset, or null if unknown

getStartDate

public java.util.Date getStartDate()

Deprecated. use getStartCalendarDate

Description copied from interface: FeatureDataset

Starting date for the entire dataset.

Specified by:

getStartDate in interface TypedDataset

Specified by:

getStartDate in interface FeatureDataset

Returns:

Start date for the entire dataset.

getEndDate

public java.util.Date getEndDate()

Deprecated. use getEndCalendarDate

Description copied from interface: FeatureDataset

Ending date for the entire dataset.

Specified by:

getEndDate in interface TypedDataset

Specified by:

getEndDate in interface FeatureDataset

Returns:

End date for the entire dataset.

getCalendarDateRange

public CalendarDateRange getCalendarDateRange()

Description copied from interface: FeatureDataset

Calendar Date range for the entire dataset.

Specified by:

getCalendarDateRange in interface FeatureDataset

Returns:

the date range for the entire dataset, or null if unknown

getCalendarDateStart

public CalendarDate getCalendarDateStart()

Description copied from interface: FeatureDataset

Starting Calendar date for the entire dataset.

Specified by:

getCalendarDateStart in interface GridDataset

Specified by:

getCalendarDateStart in interface FeatureDataset

Returns:

the starting date for the entire dataset, or null if unknown

getCalendarDateEnd

public CalendarDate getCalendarDateEnd()

Description copied from interface: FeatureDataset

Ending Calendar date for the entire dataset.

Specified by:

getCalendarDateEnd in interface GridDataset

Specified by:

getCalendarDateEnd in interface FeatureDataset

Returns:

the ending date for the entire dataset, or null if unknown

getBoundingBox

public LatLonRect getBoundingBox()

Description copied from interface: FeatureDataset

The boundingBox for the entire dataset.

Specified by:

getBoundingBox in interface TypedDataset

Specified by:

getBoundingBox in interface FeatureDataset

Returns:

the boundingBox for the entire dataset.

calcBounds

public void calcBounds()
                throws java.io.IOException

Description copied from interface: FeatureDataset

Caclulate date range and bounding box, even if the data has to be scanned. This ensures that getDateRange() and getBoundingBox() return non-null. If the collection already knows its date range and bounding box, then this has no effect.

Specified by:

calcBounds in interface FeatureDataset

Throws:

java.io.IOException - or read error.

getGlobalAttributes

public java.util.List<Attribute> getGlobalAttributes()

Description copied from interface: TypedDataset

List of global attributes.

Specified by:

getGlobalAttributes in interface TypedDataset

Specified by:

getGlobalAttributes in interface FeatureDataset

Returns:

List of type ucar.nc2.Attribute

findGlobalAttributeIgnoreCase

public Attribute findGlobalAttributeIgnoreCase(java.lang.String name)

Description copied from interface: FeatureDataset

Return the global attribute with the given name, ignoring case.

Specified by:

findGlobalAttributeIgnoreCase in interface TypedDataset

Specified by:

findGlobalAttributeIgnoreCase in interface FeatureDataset

Parameters:

name - attribute name

Returns:

the global attribute with the given name, ingnoring case.

getDataVariables

public java.util.List<VariableSimpleIF> getDataVariables()

Description copied from interface: TypedDataset

The data Variables available in this dataset. Should just be data variable others might be searching for, not metadata or coordinate system variables, etc. The shape of this VariableSimpleIF does not necessarily match the

Specified by:

getDataVariables in interface TypedDataset

Specified by:

getDataVariables in interface FeatureDataset

Returns:

List of type VariableSimpleIF

getDataVariable

public VariableSimpleIF getDataVariable(java.lang.String shortName)

Description copied from interface: TypedDataset

Get the named data Variable.

Specified by:

getDataVariable in interface TypedDataset

Specified by:

getDataVariable in interface FeatureDataset

Parameters:

shortName - of data Variable.

Returns:

VariableSimpleIF or null.

getNetcdfFile

public NetcdfFile getNetcdfFile()

Description copied from interface: FeatureDataset

Return underlying NetcdfFile, or null if none.

Specified by:

getNetcdfFile in interface TypedDataset

Specified by:

getNetcdfFile in interface FeatureDataset

Returns:

underlying NetcdfFile, or null if none.

getName

public java.lang.String getName()

the name of the dataset is the last part of the location

Returns:

the name of the dataset

getNetcdfDataset

public NetcdfDataset getNetcdfDataset()

Returns:

the underlying NetcdfDataset

getGrids

public java.util.List<GridDatatype> getGrids()

Description copied from interface: GridDataset

get the list of GridDatatype objects contained in this dataset.

Specified by:

getGrids in interface GridDataset

Returns:

the list of GeoGrid objects contained in this dataset.

findGridDatatype

public GridDatatype findGridDatatype(java.lang.String name)

Description copied from interface: GridDataset

find the named GridDatatype.

Specified by:

findGridDatatype in interface GridDataset

Parameters:

name - full unescaped name

Returns:

the named GridDatatype, or null if not found

getGridsets

public java.util.List<GridDataset.Gridset> getGridsets()

Return GridDatatype objects grouped by GridCoordSys. All GridDatatype in a Gridset have the same GridCoordSystem.

Specified by:

getGridsets in interface GridDataset

Returns:

List of type ucar.nc2.dt.GridDataset.Gridset

findGridByName

public GeoGrid findGridByName(java.lang.String fullName)

find the named GeoGrid.

Parameters:

fullName - find this GeoGrid by full name

Returns:

the named GeoGrid, or null if not found

findGridByShortName

public GeoGrid findGridByShortName(java.lang.String shortName)

find the named GeoGrid.

Specified by:

findGridByShortName in interface GridDataset

Parameters:

shortName - find this GeoGrid by short name

Returns:

the named GeoGrid, or null if not found

findGridDatatypeByAttribute

public GeoGrid findGridDatatypeByAttribute(java.lang.String attName,
                                           java.lang.String attValue)

getDetailInfo

public java.lang.String getDetailInfo()

Get Details about the dataset.

Specified by:

getDetailInfo in interface TypedDataset

Returns:

debug / underlying implementation details

getDetailInfo

public void getDetailInfo(java.util.Formatter buff)

Description copied from interface: FeatureDataset

Show debug / underlying implementation details

Specified by:

getDetailInfo in interface FeatureDataset

Parameters:

buff - append info here

getFeatureType

public FeatureType getFeatureType()

Description copied from interface: FeatureDataset

Contains collections of this FeatureType.

Specified by:

getFeatureType in interface FeatureDataset

Returns:

FeatureType of data

getImplementationName

public java.lang.String getImplementationName()

Description copied from interface: FeatureDataset

Show who is implementing

Specified by:

getImplementationName in interface FeatureDataset

Returns:

name of implementor

close

public void close()
           throws java.io.IOException

Description copied from interface: TypedDataset

Close all resources associated with this dataset.

Specified by:

close in interface java.io.Closeable

Specified by:

close in interface java.lang.AutoCloseable

Specified by:

close in interface TypedDataset

Specified by:

close in interface FeatureDataset

Specified by:

close in interface FileCacheable

Throws:

java.io.IOException - on io error

release

public void release()
             throws java.io.IOException

Specified by:

release in interface FileCacheable

Throws:

java.io.IOException

reacquire

public void reacquire()
               throws java.io.IOException

Specified by:

reacquire in interface FileCacheable

Throws:

java.io.IOException

getLastModified

public long getLastModified()

Description copied from interface: FileCacheable

Returns the time that the underlying file(s) were last modified. If they've changed since they were stored in the cache, they will be closed and reopened with FileFactory.

Specified by:

getLastModified in interface FileCacheable

Returns:

a long value representing the time the file(s) were last modified or 0L if the last-modified time couldn't be determined for any reason.

setFileCache

public void setFileCache(FileCacheIF fileCache)

Description copied from interface: FileCacheable

If the FileCache is not null, FileCacheable.close() must call FileCache.release()

  public synchronized void close() throws java.io.IOException {
    if (cache != null) {
      if (cache.release(this)) return;
    }

    reallyClose();
  } 

Specified by:

setFileCache in interface FileCacheable

Parameters:

fileCache - must store this, use it on close as above.

factory

public static GridDataset factory(java.lang.String netcdfFileURI)
                           throws java.io.IOException

Deprecated. : use GridDataset.open().

Open a netcdf dataset, parse Conventions, find all the geoGrids, return a GridDataset.

Throws:

java.io.IOException