DODSNetcdfFile (NetCDF-Java All API v5.5.3)

java.lang.Object
- ucar.nc2.NetcdfFile
- - ucar.nc2.dods.DODSNetcdfFile

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable, FileCacheable
```
@NotThreadSafe
public class DODSNetcdfFile
extends NetcdfFile
```
Access to DODS datasets through the Netcdf API.

See Also:

NetcdfFile

Nested Class Summary
- Nested classes/interfaces inherited from class ucar.nc2.NetcdfFile
  NetcdfFile.Builder<T extends NetcdfFile.Builder<T>>

Field Summary

Fields
Modifier and Type	Field and Description
`static boolean`	`debugAttributes`
`static boolean`	`debugCached`
`static boolean`	`debugCE`
`static boolean`	`debugCharArray`
`static boolean`	`debugConstruct`
`static boolean`	`debugConvertData`
`static boolean`	`debugDataResult`
`static boolean`	`debugOpenResult`
`static boolean`	`debugOpenTime`
`static boolean`	`debugPreload`
`static boolean`	`debugServerCall`
`static boolean`	`debugTime`
`static boolean`	`showNCfile`

Fields inherited from class ucar.nc2.NetcdfFile
cache, dimensions, gattributes, id, iosp, IOSP_MESSAGE_ADD_RECORD_STRUCTURE, IOSP_MESSAGE_CONVERT_RECORD_STRUCTURE, IOSP_MESSAGE_GET_NETCDF_FILE_FORMAT, IOSP_MESSAGE_RANDOM_ACCESS_FILE, IOSP_MESSAGE_REMOVE_RECORD_STRUCTURE, location, rootGroup, title, variables

Constructor Summary

Constructors
Constructor and Description
`DODSNetcdfFile(java.lang.String datasetURL)` Open a DODS file.
`DODSNetcdfFile(java.lang.String datasetURL, CancelTask cancelTask)` Open a DODS file, allow user control over preloading string arrays and making structure data available through netcdf API.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods Deprecated Methods
Modifier and Type	Method and Description
`static java.lang.String`	`canonicalURL(java.lang.String urlName)` Create the canonical form of the URL.
`void`	`close()` Close all resources (files, sockets, etc) associated with this file.
`protected static Attribute`	`combineAxesAttrs(Attribute axis1, Attribute axis2)` Safely combine the multiple axis attributes without duplication
`static int`	`convertToDODSType(DataType dataType)` Get the DODS data class corresponding to the Netcdf data type.
`static DataType`	`convertToNCType(BaseType dtype, boolean isUnsigned)` Get the Netcdf data type corresponding to the DODS BaseType class.
`static DataType`	`convertToNCType(int dodsDataType, boolean isUnsigned)` Get the Netcdf data type corresponding to the DODS data type.
`void`	`getDetailInfo(java.util.Formatter f)`
`static java.lang.String`	`getDODSConstraintName(Variable var)` Return a variable name suitable for use in a DAP constraint expression.
`java.lang.String`	`getFileTypeDescription()` Get a human-readable description for this file type.
`java.lang.String`	`getFileTypeId()` Get the file type id for the underlying data source.
`static boolean`	`isUnsigned(BaseType dtype)` Get whether this is an unsigned type.
`protected int[]`	`makeShape(DArray dodsArray)`
`protected Array`	`readData(Variable v, Section section)` Do not call this directly, use Variable.read() !! Ranges must be filled (no nulls)
`Array`	`readSection(java.lang.String variableSection)` Read a variable using the given section specification.
`long`	`readToByteChannel(Variable v, Section section, java.nio.channels.WritableByteChannel channel)` Read data from a top level Variable and send data to a WritableByteChannel.
`Array`	`readWithCE(Variable v, java.lang.String CE)`
`protected void`	`reGroup()` Go thru the variables/structure-variables and their attributes and move to the proper groups.
`protected void`	`reGroupVariable(Group rootgroup, DODSVariable dodsv)` Deprecated.
`static void`	`setAllowCompression(boolean b)` Set whether to allow messages to be compressed.
`static void`	`setAllowDeflate(boolean b)` Deprecated. use setAllowCompression
`static void`	`setAllowSessions(boolean b)` Set whether to allow sessions by allowing cookies.
`static void`	`setCoordinateVariablePreloadSize(int size)` If preloading, set maximum size of coordinate variables to be preloaded.
`static void`	`setDebugFlags(DebugFlags debugFlag)` Debugging flags.
`static void`	`setPreload(boolean b)` Set whether small variables are preloaded; only turn off for debugging.

Methods inherited from class ucar.nc2.NetcdfFile
addAttribute, addAttribute, addDimension, addGroup, addLocalFieldsToBuilder, addStringVariable, addVariable, addVariable, addVariableAttribute, builder, canonicalizeUriString, canOpen, empty, findAttribute, findAttValueIgnoreCase, findDimension, findGlobalAttribute, findGlobalAttributeIgnoreCase, findGroup, findVariable, findVariable, findVariableByAttribute, finish, getCacheName, getDetailInfo, getDimensions, getFileTypeVersion, getGlobalAttributes, getId, getIosp, getLastModified, getLocation, getRootGroup, getStructureIterator, getTitle, getUnlimitedDimension, getVariables, hasUnlimitedDimension, iospDeRegister, iospRegistered, makeFullName, makeFullName, makeFullNameSectionSpec, makeFullNameWithString, makeNameUnescaped, makeRecordStructure, makeValidCDLName, makeValidCdmObjectName, makeValidPathName, makeValidSectionSpecName, open, open, open, open, open, open, openInMemory, openInMemory, openInMemory, openInMemory, reacquire, read, readArrays, readAttributeDouble, readAttributeInteger, readToOutputStream, registerIOProvider, registerIOProvider, registerIOProvider, registerIOProviderPreferred, release, removeDimension, removeRecordStructure, removeVariable, sendIospMessage, setCacheName, setFileCache, setId, setImmutable, setLocation, setProperty, setRootGroup, setTitle, showCached, showProxies, syncExtend, toBuilder, toNcml, toString, toStringDebug, writeCDL, writeCDL, writeCDL, writeNcml, writeNcml

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

- Field Detail
  - debugCE
```
public static boolean debugCE
```
  - debugServerCall
```
public static boolean debugServerCall
```
  - debugOpenResult
```
public static boolean debugOpenResult
```
  - debugDataResult
```
public static boolean debugDataResult
```
  - debugCharArray
```
public static boolean debugCharArray
```
  - debugConvertData
```
public static boolean debugConvertData
```
  - debugConstruct
```
public static boolean debugConstruct
```
  - debugPreload
```
public static boolean debugPreload
```
  - debugTime
```
public static boolean debugTime
```
  - showNCfile
```
public static boolean showNCfile
```
  - debugAttributes
```
public static boolean debugAttributes
```
  - debugCached
```
public static boolean debugCached
```
  - debugOpenTime
```
public static boolean debugOpenTime
```
- Constructor Detail
  - DODSNetcdfFile
```
public DODSNetcdfFile(java.lang.String datasetURL)
               throws java.io.IOException
```
    Open a DODS file.
    
    Parameters:
    
    datasetURL - URL of the file. This should start with the protocol "dods:" It may also start with protocol "http:".
    
    Throws:
    
    java.io.IOException - on io error
    
    java.net.MalformedURLException
  - DODSNetcdfFile
```
public DODSNetcdfFile(java.lang.String datasetURL,
                      CancelTask cancelTask)
               throws java.io.IOException
```
    Open a DODS file, allow user control over preloading string arrays and making structure data available through netcdf API.
    
    Parameters:
    
    datasetURL - URL of the file. This should start with the protocol "dods:" or "http:".
    
    cancelTask - check if task is cancelled. may be null.
    
    Throws:
    
    java.io.IOException - on io error
    
    java.net.MalformedURLException
- Method Detail
  - setAllowSessions
```
public static void setAllowSessions(boolean b)
```
    Set whether to allow sessions by allowing cookies. This only affects requests to the TDS. Setting this to true can eliminate consistency problems for datasets that are being updated.
    
    Parameters:
    
    b - true or false. default is false.
  - setAllowDeflate
```
public static void setAllowDeflate(boolean b)
```
    Deprecated. use setAllowCompression
    
    Set whether to allow messages to be compressed.
    
    Parameters:
    
    b - true or false.
  - setAllowCompression
```
public static void setAllowCompression(boolean b)
```
    Set whether to allow messages to be compressed.
    
    Parameters:
    
    b - true or false.
  - setDebugFlags
```
public static void setDebugFlags(DebugFlags debugFlag)
```
    Debugging flags. This is a way to decouple setting flags from particular implementations.
    
    Parameters:
    
    debugFlag - set of debug flags.
  - setPreload
```
public static void setPreload(boolean b)
```
    Set whether small variables are preloaded; only turn off for debugging.
    
    Parameters:
    
    b - true if small variables are preloaded (default true)
  - setCoordinateVariablePreloadSize
```
public static void setCoordinateVariablePreloadSize(int size)
```
    If preloading, set maximum size of coordinate variables to be preloaded.
    
    Parameters:
    
    size - maximum size of coordinate variables to be preloaded.
  - canonicalURL
```
public static java.lang.String canonicalURL(java.lang.String urlName)
```
    Create the canonical form of the URL. If the urlName starts with "http:" or "https:", change it to start with "dods:", otherwise leave it alone.
    
    Parameters:
    
    urlName - the url string
    
    Returns:
    
    canonical form
  - close
```
public void close()
           throws java.io.IOException
```
    Description copied from class: NetcdfFile
    
    Close all resources (files, sockets, etc) associated with this file. If the underlying file was acquired, it will be released, otherwise closed. if isClosed() already, nothing will happen
    
    Specified by:
    
    close in interface java.io.Closeable
    
    Specified by:
    
    close in interface java.lang.AutoCloseable
    
    Specified by:
    
    close in interface FileCacheable
    
    Overrides:
    
    close in class NetcdfFile
    
    Throws:
    
    java.io.IOException - if error when closing
  - reGroup
```
protected void reGroup()
                throws DAP2Exception
```
    Go thru the variables/structure-variables and their attributes and move to the proper groups.
    
    Throws:
    
    DAP2Exception
  - reGroupVariable
```
@Deprecated
protected void reGroupVariable(Group rootgroup,
                                           DODSVariable dodsv)
```
    Deprecated.
  - combineAxesAttrs
```
protected static Attribute combineAxesAttrs(Attribute axis1,
                                            Attribute axis2)
```
    Safely combine the multiple axis attributes without duplication
    
    Parameters:
    
    axis1 - axis attribute 1
    
    axis2 - axis attribute 2
    
    Returns:
    
    the combined axis attribute
  - makeShape
```
protected int[] makeShape(DArray dodsArray)
```
  - getDODSConstraintName
```
public static java.lang.String getDODSConstraintName(Variable var)
```
    Return a variable name suitable for use in a DAP constraint expression. [Original code seemed wrong because structures can be nested and hence would have to use the full name just like non-structures]
    
    Parameters:
    
    var - The variable whose name will appear in the CE
    
    Returns:
    
    The name in a form suitable for use in a cE
  - convertToDODSType
```
public static int convertToDODSType(DataType dataType)
```
    Get the DODS data class corresponding to the Netcdf data type. This is the inverse of convertToNCType().
    
    Parameters:
    
    dataType - Netcdf data type.
    
    Returns:
    
    the corresponding DODS type enum, from opendap.dap.Attribute.XXXX.
  - convertToNCType
```
public static DataType convertToNCType(int dodsDataType,
                                       boolean isUnsigned)
```
    Get the Netcdf data type corresponding to the DODS data type. This is the inverse of convertToDODSType().
    
    Parameters:
    
    dodsDataType - DODS type enum, from dods.dap.Attribute.XXXX.
    
    Returns:
    
    the corresponding netcdf DataType.
    
    See Also:
    
    isUnsigned(opendap.dap.BaseType)
  - convertToNCType
```
public static DataType convertToNCType(BaseType dtype,
                                       boolean isUnsigned)
```
    Get the Netcdf data type corresponding to the DODS BaseType class. This is the inverse of convertToDODSType().
    
    Parameters:
    
    dtype - DODS BaseType.
    
    Returns:
    
    the corresponding netcdf DataType.
    
    See Also:
    
    isUnsigned(opendap.dap.BaseType)
  - isUnsigned
```
public static boolean isUnsigned(BaseType dtype)
```
    Get whether this is an unsigned type.
    
    Parameters:
    
    dtype - DODS BaseType.
    
    Returns:
    
    true if unsigned
  - readSection
```
public Array readSection(java.lang.String variableSection)
                  throws java.io.IOException,
                         InvalidRangeException
```
    Description copied from class: NetcdfFile
    
    Read a variable using the given section specification. The result is always an array of the type of the innermost variable. Its shape is the accumulation of all the shapes of its parent structures.
    
    Overrides:
    
    readSection in class NetcdfFile
    
    Parameters:
    
    variableSection - the constraint expression.
    
    Returns:
    
    data requested
    
    Throws:
    
    java.io.IOException - if error
    
    InvalidRangeException - if variableSection is invalid
    
    See Also:
    
    SectionSpecification
  - readData
```
protected Array readData(Variable v,
                         Section section)
                  throws java.io.IOException,
                         InvalidRangeException
```
    Description copied from class: NetcdfFile
    
    Do not call this directly, use Variable.read() !! Ranges must be filled (no nulls)
    
    Overrides:
    
    readData in class NetcdfFile
    
    Throws:
    
    java.io.IOException
    
    InvalidRangeException
  - readToByteChannel
```
public long readToByteChannel(Variable v,
                              Section section,
                              java.nio.channels.WritableByteChannel channel)
                       throws java.io.IOException,
                              InvalidRangeException
```
    Description copied from class: NetcdfFile
    
    Read data from a top level Variable and send data to a WritableByteChannel. Experimental.
    
    Overrides:
    
    readToByteChannel in class NetcdfFile
    
    Parameters:
    
    v - a top-level Variable
    
    section - the section of data to read. There must be a Range for each Dimension in the variable, in order. Note: no nulls allowed. IOSP may not modify.
    
    channel - write data to this WritableByteChannel
    
    Returns:
    
    the number of bytes written to the channel
    
    Throws:
    
    java.io.IOException - if read error
    
    InvalidRangeException - if invalid section
  - readWithCE
```
public Array readWithCE(Variable v,
                        java.lang.String CE)
                 throws java.io.IOException
```
    Throws:
    
    java.io.IOException
  - getDetailInfo
```
public void getDetailInfo(java.util.Formatter f)
```
    Overrides:
    
    getDetailInfo in class NetcdfFile
  - getFileTypeId
```
public java.lang.String getFileTypeId()
```
    Description copied from class: NetcdfFile
    
    Get the file type id for the underlying data source.
    
    Overrides:
    
    getFileTypeId in class NetcdfFile
    
    Returns:
    
    registered id of the file type
    
    See Also:
    
    "https://www.unidata.ucar.edu/software/netcdf-java/formats/FileTypes.html"
  - getFileTypeDescription
```
public java.lang.String getFileTypeDescription()
```
    Description copied from class: NetcdfFile
    
    Get a human-readable description for this file type.
    
    Overrides:
    
    getFileTypeDescription in class NetcdfFile
    
    Returns:
    
    description of the file type
    
    See Also:
    
    "https://www.unidata.ucar.edu/software/netcdf-java/formats/FileTypes.html"

Class DODSNetcdfFile

Nested Class Summary

Nested classes/interfaces inherited from class ucar.nc2.NetcdfFile

Field Summary

Fields inherited from class ucar.nc2.NetcdfFile

Constructor Summary

Method Summary

Methods inherited from class ucar.nc2.NetcdfFile

Methods inherited from class java.lang.Object

Field Detail

debugCE

debugServerCall

debugOpenResult

debugDataResult

debugCharArray

debugConvertData

debugConstruct

debugPreload

debugTime

showNCfile

debugAttributes

debugCached

debugOpenTime

Constructor Detail

DODSNetcdfFile

DODSNetcdfFile

Method Detail

setAllowSessions

setAllowDeflate

setAllowCompression

setDebugFlags

setPreload

setCoordinateVariablePreloadSize

canonicalURL

close

reGroup

reGroupVariable

combineAxesAttrs

makeShape

getDODSConstraintName

convertToDODSType

convertToNCType

convertToNCType

isUnsigned

readSection

readData

readToByteChannel

readWithCE

getDetailInfo

getFileTypeId

getFileTypeDescription