Package ucar.nc2.iosp.hdf5

Class H5iosp

java.lang.Object

ucar.nc2.iosp.AbstractIOServiceProvider

ucar.nc2.iosp.hdf5.H5iosp

All Implemented Interfaces:

IOServiceProvider

public class H5iosp
extends AbstractIOServiceProvider

HDF5 I/O

Field Summary

Fields

Modifier and Type	Field	Description
static String	IOSP_MESSAGE_INCLUDE_ORIGINAL_ATTRIBUTES
static int	VLEN_T_SIZE

Fields inherited from class ucar.nc2.iosp.AbstractIOServiceProvider

location, ncfile, raf, rafOrder

Constructor Summary

Constructors

Constructor	Description
H5iosp()

Method Summary

Modifier and Type	Method	Description
void	close()	Close the file.
String	getDetailInfo()	Show debug / underlying implementation details
void	getEosInfo(Formatter f)
String	getFileTypeDescription()	Get a human-readable description for this file type.
String	getFileTypeId()	Get a unique id for this file type.
boolean	isValidFile(RandomAccessFile raf)	Check if this is a valid file for this IOServiceProvider.
void	open(RandomAccessFile raf, NetcdfFile ncfile, CancelTask cancelTask)	Open existing file, and populate ncfile with it.
void	reacquire()	Reacquire any resources like file handles Used when reactivating in cache.
Array	readData(Variable v2, Section section)	Read data from a top level Variable and return a memory resident Array.
String[]	readFilteredStringData(LayoutBB layout)
Object	sendIospMessage(Object message)	A way to communicate arbitrary information to and from an iosp.
static void	setDebugFlags(DebugFlags debugFlag)
String	toStringDebug(Object o)	Debug info for this object.
static void	useHdfEos(boolean val)

Methods inherited from class ucar.nc2.iosp.AbstractIOServiceProvider

build, buildFinish, getFileTypeVersion, getLastModified, getStructureIterator, isBuilder, readSection, readToByteChannel, readToOutputStream, release, setNetcdfFile, streamToByteChannel, syncExtend

Methods inherited from class java.lang.Object

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

Field Detail

IOSP_MESSAGE_INCLUDE_ORIGINAL_ATTRIBUTES

public static final String IOSP_MESSAGE_INCLUDE_ORIGINAL_ATTRIBUTES

See Also:

Constant Field Values

VLEN_T_SIZE

public static final int VLEN_T_SIZE

See Also:

Constant Field Values

Constructor Detail

H5iosp

public H5iosp()

Method Detail

setDebugFlags

public static void setDebugFlags(DebugFlags debugFlag)

isValidFile

public boolean isValidFile(RandomAccessFile raf)
                    throws IOException

Description copied from interface: IOServiceProvider

Check if this is a valid file for this IOServiceProvider. You must make this method thread safe, ie dont keep any state.

Parameters:

raf - RandomAccessFile

Returns:

true if valid.

Throws:

IOException - if read error

getFileTypeId

public String getFileTypeId()

Description copied from interface: IOServiceProvider

Get a unique id for this file type.

Returns:

registered id of the file type

See Also:

"https://www.unidata.ucar.edu/software/netcdf-java/formats/FileTypes.html"

getFileTypeDescription

public String getFileTypeDescription()

Description copied from interface: IOServiceProvider

Get a human-readable description for this file type.

Returns:

description of the file type

See Also:

"https://www.unidata.ucar.edu/software/netcdf-java/formats/FileTypes.html"

getEosInfo

public void getEosInfo(Formatter f)
                throws IOException

Throws:

IOException

useHdfEos

public static void useHdfEos(boolean val)

open

public void open(RandomAccessFile raf,
                 NetcdfFile ncfile,
                 CancelTask cancelTask)
          throws IOException

Description copied from interface: IOServiceProvider

Open existing file, and populate ncfile with it. This method is only called by the NetcdfFile constructor on itself. The provided NetcdfFile object will be empty except for the location String and the IOServiceProvider associated with this NetcdfFile object.

Specified by:

open in interface IOServiceProvider

Overrides:

open in class AbstractIOServiceProvider

Parameters:

raf - the file to work on, it has already passed the isValidFile() test.

ncfile - add objects to this empty NetcdfFile

cancelTask - used to monitor user cancellation; may be null.

Throws:

IOException - if read error

readData

public Array readData(Variable v2,
                      Section section)
               throws IOException,
                      InvalidRangeException

Description copied from interface: IOServiceProvider

Read data from a top level Variable and return a memory resident Array. This Array has the same element type as the Variable, and the requested shape.

Parameters:

v2 - 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.

Returns:

the requested data in a memory-resident Array

Throws:

IOException - if read error

InvalidRangeException - if invalid section

See Also:

Range

readFilteredStringData

public String[] readFilteredStringData(LayoutBB layout)
                                throws IOException

Throws:

IOException

close

public void close()
           throws IOException

Description copied from interface: IOServiceProvider

Close the file. It is the IOServiceProvider's job to close the file (even though it didnt open it), and to free any other resources it has used.

Specified by:

close in interface IOServiceProvider

Overrides:

close in class AbstractIOServiceProvider

Throws:

IOException - if read error

reacquire

public void reacquire()
               throws IOException

Description copied from interface: IOServiceProvider

Reacquire any resources like file handles Used when reactivating in cache.

Specified by:

reacquire in interface IOServiceProvider

Overrides:

reacquire in class AbstractIOServiceProvider

Throws:

IOException

toStringDebug

public String toStringDebug(Object o)

Description copied from interface: IOServiceProvider

Debug info for this object.

Specified by:

toStringDebug in interface IOServiceProvider

Overrides:

toStringDebug in class AbstractIOServiceProvider

Parameters:

o - which object

Returns:

debug info for this object

getDetailInfo

public String getDetailInfo()

Description copied from interface: IOServiceProvider

Show debug / underlying implementation details

Specified by:

getDetailInfo in interface IOServiceProvider

Overrides:

getDetailInfo in class AbstractIOServiceProvider

Returns:

debug info

sendIospMessage

public Object sendIospMessage(Object message)

Description copied from interface: IOServiceProvider

A way to communicate arbitrary information to and from an iosp.

Specified by:

sendIospMessage in interface IOServiceProvider

Overrides:

sendIospMessage in class AbstractIOServiceProvider

Parameters:

message - opaque message sent to the IOSP object when its opened (not when isValidFile() is called)

Returns:

opaque Object, may be null.