Detailed Description

See also: Datatypes (H5T), C-API; HDF5 Datatypes, User Guide

Functions
static long	H5Tarray_create (long base_id, int ndims, long[] dim) throws HDF5LibraryException, NullPointerException

static int	H5Tclose (long type_id) throws HDF5LibraryException

static synchronized native void	H5Tcommit (long loc_id, String name, long type_id, long lcpl_id, long tcpl_id, long tapl_id) throws HDF5LibraryException, NullPointerException

static synchronized native void	H5Tcommit_anon (long loc_id, long type_id, long tcpl_id, long tapl_id) throws HDF5LibraryException

static synchronized native boolean	H5Tcommitted (long type_id) throws HDF5LibraryException

static synchronized native void	H5Tcompiler_conv (long src_id, long dst_id) throws HDF5LibraryException

static synchronized native void	H5Tconvert (long src_id, long dst_id, long nelmts, byte[] buf, byte[] background, long plist_id) throws HDF5LibraryException, NullPointerException

static long	H5Tcopy (long type_id) throws HDF5LibraryException

static long	H5Tcreate (int tclass, long size) throws HDF5LibraryException

static long	H5Tdecode (byte[] buf) throws HDF5LibraryException, NullPointerException

static synchronized native boolean	H5Tdetect_class (long type_id, int cls) throws HDF5LibraryException

static synchronized native int	H5Tencode (long obj_id, byte[] buf, long nalloc) throws HDF5LibraryException, NullPointerException

static long	H5Tenum_create (long base_id) throws HDF5LibraryException

static synchronized native void	H5Tenum_insert (long type, String name, byte[] value) throws HDF5LibraryException, NullPointerException

static int	H5Tenum_insert (long type, String name, int[] value) throws HDF5LibraryException, NullPointerException

static int	H5Tenum_insert (long type, String name, int value) throws HDF5LibraryException, NullPointerException

static synchronized native String	H5Tenum_nameof (long type, byte[] value, long size) throws HDF5LibraryException, NullPointerException

static int	H5Tenum_nameof (long type, int[] value, String[] name, int size) throws HDF5LibraryException, NullPointerException

static synchronized native void	H5Tenum_valueof (long type, String name, byte[] value) throws HDF5LibraryException, NullPointerException

static int	H5Tenum_valueof (long type, String name, int[] value) throws HDF5LibraryException, NullPointerException

static synchronized native boolean	H5Tequal (long type_id1, long type_id2) throws HDF5LibraryException

static int	H5Tget_array_dims (long type_id, long[] dims) throws HDF5LibraryException, NullPointerException

static synchronized native int	H5Tget_array_dims2 (long type_id, long[] dims) throws HDF5LibraryException, NullPointerException

static synchronized native int	H5Tget_array_ndims (long type_id) throws HDF5LibraryException

static synchronized native int	H5Tget_class (long type_id) throws HDF5LibraryException

static String	H5Tget_class_name (long class_id)

static long	H5Tget_create_plist (long type_id) throws HDF5LibraryException

static synchronized native int	H5Tget_cset (long type_id) throws HDF5LibraryException

static synchronized native int	H5Tset_cset (long type_id, int cset) throws HDF5LibraryException

static synchronized native int	H5Tget_ebias (long type_id) throws HDF5LibraryException

static int	H5Tset_ebias (long type_id, int ebias) throws HDF5LibraryException

static synchronized native long	H5Tget_ebias_long (long type_id) throws HDF5LibraryException

static synchronized native void	H5Tset_ebias (long type_id, long ebias) throws HDF5LibraryException

static synchronized native void	H5Tget_fields (long type_id, long[] fields) throws HDF5LibraryException, NullPointerException, IllegalArgumentException

static int	H5Tget_fields (long type_id, int[] fields) throws HDF5LibraryException, NullPointerException, IllegalArgumentException

static synchronized native void	H5Tset_fields (long type_id, long spos, long epos, long esize, long mpos, long msize) throws HDF5LibraryException

static int	H5Tset_fields (long type_id, int spos, int epos, int esize, int mpos, int msize) throws HDF5LibraryException

static synchronized native int	H5Tget_inpad (long type_id) throws HDF5LibraryException

static synchronized native int	H5Tset_inpad (long type_id, int inpad) throws HDF5LibraryException

static synchronized native int	H5Tget_member_class (long type_id, int membno) throws HDF5LibraryException

static synchronized native int	H5Tget_member_index (long type_id, String field_name) throws HDF5LibraryException

static synchronized native String	H5Tget_member_name (long type_id, int field_idx) throws HDF5LibraryException

static synchronized native long	H5Tget_member_offset (long type_id, int membno)

static long	H5Tget_member_type (long type_id, int field_idx) throws HDF5LibraryException

static synchronized native void	H5Tget_member_value (long type_id, int membno, byte[] value) throws HDF5LibraryException, NullPointerException

static int	H5Tget_member_value (long type_id, int membno, int[] value) throws HDF5LibraryException, NullPointerException

static synchronized long	H5Tget_native_type (long type_id) throws HDF5LibraryException

static long	H5Tget_native_type (long type_id, int direction) throws HDF5LibraryException

static synchronized native int	H5Tget_nmembers (long type_id) throws HDF5LibraryException

static synchronized native int	H5Tget_norm (long type_id) throws HDF5LibraryException

static synchronized native int	H5Tset_norm (long type_id, int norm) throws HDF5LibraryException

static synchronized native int	H5Tget_offset (long type_id) throws HDF5LibraryException

static int	H5Tset_offset (long type_id, int offset) throws HDF5LibraryException

static synchronized native void	H5Tset_offset (long type_id, long offset) throws HDF5LibraryException

static synchronized native int	H5Tget_order (long type_id) throws HDF5LibraryException

static synchronized native int	H5Tset_order (long type_id, int order) throws HDF5LibraryException

static synchronized native int	H5Tget_pad (long type_id, int[] pad) throws HDF5LibraryException, NullPointerException

static synchronized native int	H5Tset_pad (long type_id, int lsb, int msb) throws HDF5LibraryException

static synchronized native int	H5Tget_precision (long type_id) throws HDF5LibraryException

static int	H5Tset_precision (long type_id, int precision) throws HDF5LibraryException

static synchronized native long	H5Tget_precision_long (long type_id) throws HDF5LibraryException

static synchronized native void	H5Tset_precision (long type_id, long precision) throws HDF5LibraryException

static synchronized native int	H5Tget_sign (long type_id) throws HDF5LibraryException

static synchronized native int	H5Tset_sign (long type_id, int sign) throws HDF5LibraryException

static synchronized native long	H5Tget_size (long type_id) throws HDF5LibraryException

static synchronized native int	H5Tset_size (long type_id, long size) throws HDF5LibraryException

static synchronized native int	H5Tget_strpad (long type_id) throws HDF5LibraryException

static synchronized native int	H5Tset_strpad (long type_id, int strpad) throws HDF5LibraryException

static long	H5Tget_super (long type) throws HDF5LibraryException

static synchronized native String	H5Tget_tag (long type) throws HDF5LibraryException

static synchronized native int	H5Tset_tag (long type, String tag) throws HDF5LibraryException

static synchronized native int	H5Tinsert (long type_id, String name, long offset, long field_id) throws HDF5LibraryException, NullPointerException

static synchronized native boolean	H5Tis_variable_str (long type_id) throws HDF5LibraryException

static synchronized native int	H5Tlock (long type_id) throws HDF5LibraryException

static long	H5Topen (long loc_id, String name, long tapl_id) throws HDF5LibraryException, NullPointerException

static synchronized native int	H5Tpack (long type_id) throws HDF5LibraryException

static synchronized native void	H5Treclaim (long type_id, long space_id, long xfer_plist_id, byte[] buf) throws HDF5LibraryException, NullPointerException

static long	H5Tvlen_create (long base_id) throws HDF5LibraryException

static synchronized native void	H5Tflush (long dtype_id) throws HDF5LibraryException

static synchronized native void	H5Trefresh (long dtype_id) throws HDF5LibraryException

Function Documentation

◆ H5Tarray_create()

static long H5Tarray_create	(	long	base_id,
		int	ndims,
		long[]	dim
	)		throws HDF5LibraryException, NullPointerException

static

H5Tarray_create creates a new array datatype object.

Parameters

base_id	IN: Datatype identifier for the array base datatype.
ndims	IN: Rank of the array.
dim	IN: Size of each array dimension.

Returns: a valid datatype identifier

Exceptions

HDF5LibraryException	Error from the HDF5 Library.
NullPointerException	dim is null.

◆ H5Tclose()

static int H5Tclose ( long type_id ) throws HDF5LibraryException

static

H5Tclose releases a datatype.

Parameters

type_id IN: Identifier of datatype to release.

Returns: a non-negative value if successful

Exceptions

HDF5LibraryException Error from the HDF5 Library.

◆ H5Tcommit()

static synchronized native void H5Tcommit	(	long	loc_id,
		String	name,
		long	type_id,
		long	lcpl_id,
		long	tcpl_id,
		long	tapl_id
	)		throws HDF5LibraryException, NullPointerException

static

H5Tcommit saves a transient datatype as an immutable named datatype in a file.

Parameters

loc_id	IN: Location identifier.
name	IN: Name given to committed datatype.
type_id	IN: Identifier of datatype to be committed.
lcpl_id	IN: Link creation property list.
tcpl_id	IN: Datatype creation property list.
tapl_id	IN: Datatype access property list.

Exceptions

HDF5LibraryException	Error from the HDF5 Library.
NullPointerException	name is null.

◆ H5Tcommit_anon()

static synchronized native void H5Tcommit_anon	(	long	loc_id,
		long	type_id,
		long	tcpl_id,
		long	tapl_id
	)		throws HDF5LibraryException

static

H5Tcommit_anon commits a transient datatype (not immutable) to a file, turning it into a named datatype with the specified creation and property lists.

Parameters

loc_id	IN: Location identifier.
type_id	IN: Identifier of datatype to be committed.
tcpl_id	IN: Datatype creation property list.
tapl_id	IN: Datatype access property list.

Exceptions

HDF5LibraryException Error from the HDF5 Library.

◆ H5Tcommitted()

static synchronized native boolean H5Tcommitted ( long type_id ) throws HDF5LibraryException

static

H5Tcommitted queries a type to determine whether the type specified by the type identifier is a named type or a transient type.

Parameters

type_id IN: Identifier of datatype.

Returns: true the datatype has been committed

Exceptions

HDF5LibraryException Error from the HDF5 Library.

◆ H5Tcompiler_conv()

static synchronized native void H5Tcompiler_conv	(	long	src_id,
		long	dst_id
	)		throws HDF5LibraryException

static

H5Tcompiler_conv finds out whether the library's conversion function from type src_id to type dst_id is a compiler (hard) conversion.

Parameters

src_id	IN: Identifier of source datatype.
dst_id	IN: Identifier of destination datatype.

Exceptions

HDF5LibraryException Error from the HDF5 Library.

◆ H5Tconvert()

static synchronized native void H5Tconvert	(	long	src_id,
		long	dst_id,
		long	nelmts,
		byte[]	buf,
		byte[]	background,
		long	plist_id
	)		throws HDF5LibraryException, NullPointerException

static

H5Tconvert converts nelmts elements from the type specified by the src_id identifier to type dst_id.

Parameters

src_id	IN: Identifier of source datatype.
dst_id	IN: Identifier of destination datatype.
nelmts	IN: Size of array buf.
buf	IN: Array containing pre- and post-conversion values.
background	IN: Optional background buffer.
plist_id	IN: Dataset transfer property list identifier.

Exceptions

HDF5LibraryException	Error from the HDF5 Library.
NullPointerException	buf is null.

◆ H5Tcopy()

static long H5Tcopy ( long type_id ) throws HDF5LibraryException

static

H5Tcopy copies an existing datatype. The returned type is always transient and unlocked.

Parameters

type_id IN: Identifier of datatype to copy. Can be a datatype identifier, a predefined datatype (defined in H5Tpublic.h), or a dataset Identifier.

Returns: a datatype identifier if successful

Exceptions

HDF5LibraryException Error from the HDF5 Library.

◆ H5Tcreate()

static long H5Tcreate	(	int	tclass,
		long	size
	)		throws HDF5LibraryException

static

H5Tcreate creates a new datatype of the specified class with the specified number of bytes.

Parameters

tclass	IN: Class of datatype to create.
size	IN: The number of bytes in the datatype to create.

Returns: datatype identifier

Exceptions

HDF5LibraryException Error from the HDF5 Library.

◆ H5Tdecode()

static long H5Tdecode ( byte[] buf ) throws HDF5LibraryException, NullPointerException

static

H5Tdecode reconstructs the HDF5 data type object and returns a new object handle for it.

Parameters

buf	IN: Buffer for the data type object to be decoded.

Returns: a new object handle

Exceptions

HDF5LibraryException	Error from the HDF5 Library.
NullPointerException	buf is null.

◆ H5Tdetect_class()

static synchronized native boolean H5Tdetect_class	(	long	type_id,
		int	cls
	)		throws HDF5LibraryException

static

H5Tdetect_class determines whether the datatype specified in dtype_id contains any datatypes of the datatype class specified in dtype_class.

Parameters

type_id	IN: Identifier of datatype to query.
cls	IN: Identifier of datatype cls.

Returns: true if the datatype specified in dtype_id contains any datatypes of the datatype class

Exceptions

HDF5LibraryException Error from the HDF5 Library.

◆ H5Tencode()

static synchronized native int H5Tencode	(	long	obj_id,
		byte[]	buf,
		long	nalloc
	)		throws HDF5LibraryException, NullPointerException

static

H5Tencode converts a data type description into binary form in a buffer.

Parameters

obj_id	IN: Identifier of the object to be encoded.
buf	OUT: Buffer for the object to be encoded into. If the provided buffer is NULL, only the size of buffer needed is returned.
nalloc	IN: The size of the allocated buffer.

Returns: the size needed for the allocated buffer.

Exceptions

HDF5LibraryException	Error from the HDF5 Library.
NullPointerException	buf is null.

◆ H5Tenum_create()

static long H5Tenum_create ( long base_id ) throws HDF5LibraryException

static

H5Tenum_create creates a new enumeration datatype based on the specified base datatype, parent_id, which must be an integer type.

Parameters

base_id IN: Identifier of the parent datatype to release.

Returns: the datatype identifier for the new enumeration datatype

Exceptions

HDF5LibraryException Error from the HDF5 Library.

◆ H5Tenum_insert() [1/3]

static synchronized native void H5Tenum_insert	(	long	type,
		String	name,
		byte[]	value
	)		throws HDF5LibraryException, NullPointerException

static

H5Tenum_insert inserts a new enumeration datatype member into an enumeration datatype.

Parameters

type	IN: Identifier of datatype.
name	IN: The name of the member
value	IN: The value of the member, data of the correct type

Exceptions

HDF5LibraryException	Error from the HDF5 Library.
NullPointerException	name is null.

◆ H5Tenum_insert() [2/3]

static int H5Tenum_insert	(	long	type,
		String	name,
		int	value
	)		throws HDF5LibraryException, NullPointerException

static

H5Tenum_insert inserts a new enumeration datatype member into an enumeration datatype.

Parameters

type	IN: Identifier of datatype.
name	IN: The name of the member
value	IN: The value of the member, data of the correct type

Returns: a non-negative value if successful

Exceptions

HDF5LibraryException	Error from the HDF5 Library.
NullPointerException	name is null.

◆ H5Tenum_insert() [3/3]

static int H5Tenum_insert	(	long	type,
		String	name,
		int[]	value
	)		throws HDF5LibraryException, NullPointerException

static

H5Tenum_insert inserts a new enumeration datatype member into an enumeration datatype.

Parameters

type	IN: Identifier of datatype.
name	IN: The name of the member
value	IN: The value of the member, data of the correct type

Returns: a non-negative value if successful

Exceptions

HDF5LibraryException	Error from the HDF5 Library.
NullPointerException	name is null.

◆ H5Tenum_nameof() [1/2]

static synchronized native String H5Tenum_nameof	(	long	type,
		byte[]	value,
		long	size
	)		throws HDF5LibraryException, NullPointerException

static

H5Tenum_nameof finds the symbol name that corresponds to the specified value of the enumeration datatype type.

Parameters

type	IN: Identifier of datatype.
value	IN: The value of the member, data of the correct
size	IN: The probable length of the name

Returns: the symbol name.

Exceptions

HDF5LibraryException	Error from the HDF5 Library.
NullPointerException	value is null.

◆ H5Tenum_nameof() [2/2]

static int H5Tenum_nameof	(	long	type,
		int[]	value,
		String[]	name,
		int	size
	)		throws HDF5LibraryException, NullPointerException

static

H5Tenum_nameof finds the symbol name that corresponds to the specified value of the enumeration datatype type.

Parameters

type	IN: Identifier of datatype.
value	IN: The value of the member, data of the correct
name	OUT: The name of the member
size	IN: The max length of the name

Returns: a non-negative value if successful

Exceptions

HDF5LibraryException	Error from the HDF5 Library.
NullPointerException	name is null.

◆ H5Tenum_valueof() [1/2]

static synchronized native void H5Tenum_valueof	(	long	type,
		String	name,
		byte[]	value
	)		throws HDF5LibraryException, NullPointerException

static

H5Tenum_valueof finds the value that corresponds to the specified name of the enumeration datatype type.

Parameters

type	IN: Identifier of datatype.
name	IN: The name of the member
value	OUT: The value of the member

Exceptions

HDF5LibraryException Error from the HDF5 Library.

◆ H5Tenum_valueof() [2/2]

static int H5Tenum_valueof	(	long	type,
		String	name,
		int[]	value
	)		throws HDF5LibraryException, NullPointerException

static

H5Tenum_valueof finds the value that corresponds to the specified name of the enumeration datatype type.

Parameters

type	IN: Identifier of datatype.
name	IN: The name of the member
value	OUT: The value of the member

Returns: a non-negative value if successful

Exceptions

HDF5LibraryException	Error from the HDF5 Library.
NullPointerException	name is null.

◆ H5Tequal()

static synchronized native boolean H5Tequal	(	long	type_id1,
		long	type_id2
	)		throws HDF5LibraryException

static

H5Tequal determines whether two datatype identifiers refer to the same datatype.

Parameters

type_id1	IN: Identifier of datatype to compare.
type_id2	IN: Identifier of datatype to compare.

Returns: true if the datatype identifiers refer to the same datatype, else false.

Exceptions

HDF5LibraryException Error from the HDF5 Library.

◆ H5Tflush()

static synchronized native void H5Tflush ( long dtype_id ) throws HDF5LibraryException

static

H5Tflush causes all buffers associated with a committed datatype to be immediately flushed to disk without removing the data from the cache.

Parameters

dtype_id IN: Identifier of the committed datatype to be flushed.

Exceptions

HDF5LibraryException Error from the HDF5 Library.

◆ H5Tget_array_dims()

static int H5Tget_array_dims	(	long	type_id,
		long[]	dims
	)		throws HDF5LibraryException, NullPointerException

static

H5Tget_array_dims returns the sizes of the dimensions of the specified array datatype object.

Parameters

type_id	IN: Datatype identifier of array object.
dims	OUT: Sizes of array dimensions.

Returns: the non-negative number of dimensions of the array type

Exceptions

HDF5LibraryException	Error from the HDF5 Library.
NullPointerException	dims is null.

◆ H5Tget_array_dims2()

static synchronized native int H5Tget_array_dims2	(	long	type_id,
		long[]	dims
	)		throws HDF5LibraryException, NullPointerException

static

H5Tget_array_dims2 returns the sizes of the dimensions of the specified array datatype object.

Parameters

type_id	IN: Datatype identifier of array object.
dims	OUT: Sizes of array dimensions.

Returns: the non-negative number of dimensions of the array type

Exceptions

HDF5LibraryException	Error from the HDF5 Library.
NullPointerException	dims is null.

◆ H5Tget_array_ndims()

static synchronized native int H5Tget_array_ndims ( long type_id ) throws HDF5LibraryException

static

H5Tget_array_ndims returns the rank, the number of dimensions, of an array datatype object.

Parameters

type_id IN: Datatype identifier of array object.

Returns: the rank of the array

Exceptions

HDF5LibraryException Error from the HDF5 Library.

◆ H5Tget_class()

static synchronized native int H5Tget_class ( long type_id ) throws HDF5LibraryException

static

H5Tget_class returns the datatype class identifier.

Parameters

type_id IN: Identifier of datatype to query.

Returns: datatype class identifier if successful; otherwise H5T_NO_CLASS(-1).

Exceptions

HDF5LibraryException Error from the HDF5 Library.

◆ H5Tget_class_name()

static String H5Tget_class_name ( long class_id )

static

H5Tget_class_name returns the datatype class identifier.

Parameters

class_id IN: Identifier of class from H5Tget_class.

Returns: class name if successful; otherwise H5T_NO_CLASS.

◆ H5Tget_create_plist()

static long H5Tget_create_plist ( long type_id ) throws HDF5LibraryException

static

H5Tget_create_plist returns a property list identifier for the datatype creation property list associated with the datatype specified by type_id.

Parameters

type_id IN: Identifier of datatype.

Returns: a datatype property list identifier.

Exceptions

HDF5LibraryException Error from the HDF5 Library.

◆ H5Tget_cset()

static synchronized native int H5Tget_cset ( long type_id ) throws HDF5LibraryException

static

H5Tget_cset retrieves the character set type of a string datatype.

Parameters

type_id IN: Identifier of datatype to query.

Returns: a valid character set type if successful

Exceptions

HDF5LibraryException Error from the HDF5 Library.

◆ H5Tget_ebias()

static synchronized native int H5Tget_ebias ( long type_id ) throws HDF5LibraryException

static

H5Tget_ebias retrieves the exponent bias of a floating-point type.

Parameters

type_id Identifier of datatype to query.

Returns: the bias if successful; otherwise 0.

Exceptions

HDF5LibraryException Error from the HDF5 Library.

◆ H5Tget_ebias_long()

static synchronized native long H5Tget_ebias_long ( long type_id ) throws HDF5LibraryException

static

H5Tget_ebias retrieves the exponent bias of a floating-point type.

Parameters

type_id IN: Identifier of datatype to query.

Returns: the bias

Exceptions

HDF5LibraryException Error from the HDF5 Library.

◆ H5Tget_fields() [1/2]

static int H5Tget_fields	(	long	type_id,
		int[]	fields
	)		throws HDF5LibraryException, NullPointerException, IllegalArgumentException

static

H5Tget_fields retrieves information about the locations of the various bit fields of a floating point datatype.

Parameters

type_id	IN: Identifier of datatype to query.
fields	OUT: location of size and bit-position.

     fields[0] = spos  OUT: location to return size of in bits.
     fields[1] = epos  OUT: location to return exponent bit-position.
     fields[2] = esize OUT: location to return size of exponent in bits.
     fields[3] = mpos  OUT: location to return mantissa bit-position.
     fields[4] = msize OUT: location to return size of mantissa in bits.

Returns: a non-negative value if successful

Exceptions

HDF5LibraryException	Error from the HDF5 Library.
NullPointerException	fields is null.
IllegalArgumentException	fields array is invalid.

◆ H5Tget_fields() [2/2]

static synchronized native void H5Tget_fields	(	long	type_id,
		long[]	fields
	)		throws HDF5LibraryException, NullPointerException, IllegalArgumentException

static

H5Tget_fields retrieves information about the locations of the various bit fields of a floating point datatype.

Parameters

type_id	IN: Identifier of datatype to query.
fields	OUT: location of size and bit-position. fields[0] = spos OUT: location to return size of in bits. fields[1] = epos OUT: location to return exponent bit-position. fields[2] = esize OUT: location to return size of exponent in bits. fields[3] = mpos OUT: location to return mantissa bit-position. fields[4] = msize OUT: location to return size of mantissa in bits.

Exceptions

HDF5LibraryException	Error from the HDF5 Library.
NullPointerException	fields is null.
IllegalArgumentException	fields array is invalid.

◆ H5Tget_inpad()

static synchronized native int H5Tget_inpad ( long type_id ) throws HDF5LibraryException

static

H5Tget_inpad retrieves the internal padding type for unused bits in floating-point datatypes.

Parameters

type_id IN: Identifier of datatype to query.

Returns: a valid padding type if successful

Exceptions

HDF5LibraryException Error from the HDF5 Library.

◆ H5Tget_member_class()

static synchronized native int H5Tget_member_class	(	long	type_id,
		int	membno
	)		throws HDF5LibraryException

static

H5Tget_member_class returns the class of datatype of the specified member.

Parameters

type_id	IN: Datatype identifier of compound object.
membno	IN: Compound object member number.

Returns: the class of the datatype of the field if successful;

Exceptions

HDF5LibraryException Error from the HDF5 Library.

◆ H5Tget_member_index()

static synchronized native int H5Tget_member_index	(	long	type_id,
		String	field_name
	)		throws HDF5LibraryException

static

H5Tget_member_index retrieves the index of a field of a compound datatype.

Parameters

type_id	IN: Identifier of datatype to query.
field_name	IN: Field name of the field index to retrieve.

Returns: if field is defined, the index; else negative.

Exceptions

HDF5LibraryException Error from the HDF5 Library.

◆ H5Tget_member_name()

static synchronized native String H5Tget_member_name	(	long	type_id,
		int	field_idx
	)		throws HDF5LibraryException

static

H5Tget_member_name retrieves the name of a field of a compound datatype or an element of an enumeration datatype.

Parameters

type_id	IN: Identifier of datatype to query.
field_idx	IN: Field index (0-based) of the field name to retrieve.

Returns: a valid pointer to the name if successful; otherwise null.

Exceptions

HDF5LibraryException Error from the HDF5 Library.

◆ H5Tget_member_offset()

static synchronized native long H5Tget_member_offset	(	long	type_id,
		int	membno
	)

static

H5Tget_member_offset returns the byte offset of the specified member of the compound datatype. This is the byte offset in the HDF5 file/library, NOT the offset of any Java object which might be mapped to this data item.

Parameters

type_id	IN: Identifier of datatype to query.
membno	IN: Field index (0-based) of the field type to retrieve.

Returns: the offset of the member.

◆ H5Tget_member_type()

static long H5Tget_member_type	(	long	type_id,
		int	field_idx
	)		throws HDF5LibraryException

static

H5Tget_member_type returns the datatype of the specified member.

Parameters

type_id	IN: Identifier of datatype to query.
field_idx	IN: Field index (0-based) of the field type to retrieve.

Returns: the identifier of a copy of the datatype of the field if successful;

Exceptions

HDF5LibraryException Error from the HDF5 Library.

◆ H5Tget_member_value() [1/2]

static synchronized native void H5Tget_member_value	(	long	type_id,
		int	membno,
		byte[]	value
	)		throws HDF5LibraryException, NullPointerException

static

H5Tget_member_value returns the value of the enumeration datatype member memb_no.

Parameters

type_id	IN: Datatype identifier for the enumeration datatype.
membno	IN: Number of the enumeration datatype member.
value	OUT: The value of the member

Exceptions

HDF5LibraryException	Error from the HDF5 Library.
NullPointerException	value is null.

◆ H5Tget_member_value() [2/2]

static int H5Tget_member_value	(	long	type_id,
		int	membno,
		int[]	value
	)		throws HDF5LibraryException, NullPointerException

static

H5Tget_member_value returns the value of the enumeration datatype member memb_no.

Parameters

type_id	IN: Identifier of datatype.
membno	IN: The name of the member
value	OUT: The value of the member

Returns: a non-negative value if successful

Exceptions

HDF5LibraryException	Error from the HDF5 Library.
NullPointerException	value is null.

◆ H5Tget_native_type() [1/2]

static synchronized long H5Tget_native_type ( long type_id ) throws HDF5LibraryException

static

H5Tget_native_type returns the equivalent native datatype for the datatype specified in type_id.

Parameters

type_id IN: Identifier of datatype to query. Direction of search is assumed to be in ascending order.

Returns: the native datatype identifier for the specified dataset datatype.

Exceptions

HDF5LibraryException Error from the HDF5 Library.

◆ H5Tget_native_type() [2/2]

static long H5Tget_native_type	(	long	type_id,
		int	direction
	)		throws HDF5LibraryException

static

H5Tget_native_type returns the equivalent native datatype for the datatype specified in type_id.

Parameters

type_id	IN: Identifier of datatype to query.
direction	IN: Direction of search.

Returns: the native datatype identifier for the specified dataset datatype.

Exceptions

HDF5LibraryException Error from the HDF5 Library.

◆ H5Tget_nmembers()

static synchronized native int H5Tget_nmembers ( long type_id ) throws HDF5LibraryException

static

H5Tget_nmembers retrieves the number of fields a compound datatype has.

Parameters

type_id IN: Identifier of datatype to query.

Returns: number of members datatype has if successful

Exceptions

HDF5LibraryException Error from the HDF5 Library.

◆ H5Tget_norm()

static synchronized native int H5Tget_norm ( long type_id ) throws HDF5LibraryException

static

H5Tget_norm retrieves the mantissa normalization of a floating-point datatype.

Parameters

type_id IN: Identifier of datatype to query.

Returns: a valid normalization type if successful

Exceptions

HDF5LibraryException Error from the HDF5 Library.

◆ H5Tget_offset()

static synchronized native int H5Tget_offset ( long type_id ) throws HDF5LibraryException

static

H5Tget_offset retrieves the bit offset of the first significant bit.

Parameters

type_id IN: Identifier of datatype to query.

Returns: a positive offset value if successful; otherwise 0.

Exceptions

HDF5LibraryException Error from the HDF5 Library.

◆ H5Tget_order()

static synchronized native int H5Tget_order ( long type_id ) throws HDF5LibraryException

static

H5Tget_order returns the byte order of an atomic datatype.

Parameters

type_id IN: Identifier of datatype to query.

Returns: a byte order constant if successful

Exceptions

HDF5LibraryException Error from the HDF5 Library.

◆ H5Tget_pad()

static synchronized native int H5Tget_pad	(	long	type_id,
		int[]	pad
	)		throws HDF5LibraryException, NullPointerException

static

H5Tget_pad retrieves the padding type of the least and most-significant bit padding.

Parameters

type_id	IN: Identifier of datatype to query.
pad	OUT: locations to return least-significant and most-significant bit padding type.

     pad[0] = lsb // least-significant bit padding type
     pad[1] = msb // most-significant bit padding type

Returns: a non-negative value if successful

Exceptions

HDF5LibraryException	Error from the HDF5 Library.
NullPointerException	pad is null.

◆ H5Tget_precision()

static synchronized native int H5Tget_precision ( long type_id ) throws HDF5LibraryException

static

H5Tget_precision returns the precision of an atomic datatype.

Parameters

type_id Identifier of datatype to query.

Returns: the number of significant bits if successful

Exceptions

HDF5LibraryException Error from the HDF5 Library.

◆ H5Tget_precision_long()

static synchronized native long H5Tget_precision_long ( long type_id ) throws HDF5LibraryException

static

H5Tget_precision returns the precision of an atomic datatype.

Parameters

type_id IN: Identifier of datatype to query.

Returns: the number of significant bits if successful

Exceptions

HDF5LibraryException Error from the HDF5 Library.

◆ H5Tget_sign()

static synchronized native int H5Tget_sign ( long type_id ) throws HDF5LibraryException

static

H5Tget_sign retrieves the sign type for an integer type.

Parameters

type_id IN: Identifier of datatype to query.

Returns: a valid sign type if successful

Exceptions

HDF5LibraryException Error from the HDF5 Library.

◆ H5Tget_size()

static synchronized native long H5Tget_size ( long type_id ) throws HDF5LibraryException

static

H5Tget_size returns the size of a datatype in bytes.

Parameters

type_id IN: Identifier of datatype to query.

Returns: the size of the datatype in bytes

Exceptions

HDF5LibraryException Error from the HDF5 Library.

◆ H5Tget_strpad()

static synchronized native int H5Tget_strpad ( long type_id ) throws HDF5LibraryException

static

H5Tget_strpad retrieves the string padding method for a string datatype.

Parameters

type_id IN: Identifier of datatype to query.

Returns: a valid string padding type if successful

Exceptions

HDF5LibraryException Error from the HDF5 Library.

◆ H5Tget_super()

static long H5Tget_super ( long type ) throws HDF5LibraryException

static

H5Tget_super returns the type from which TYPE is derived.

Parameters

type	IN: Identifier of datatype.

Returns: the parent type

Exceptions

HDF5LibraryException Error from the HDF5 Library.

◆ H5Tget_tag()

static synchronized native String H5Tget_tag ( long type ) throws HDF5LibraryException

static

H5Tget_tag returns the tag associated with datatype type_id.

Parameters

type	IN: Identifier of datatype.

Returns: the tag

Exceptions

HDF5LibraryException Error from the HDF5 Library.

◆ H5Tinsert()

static synchronized native int H5Tinsert	(	long	type_id,
		String	name,
		long	offset,
		long	field_id
	)		throws HDF5LibraryException, NullPointerException

static

H5Tinsert adds another member to the compound datatype type_id.

Parameters

type_id	IN: Identifier of compound datatype to modify.
name	IN: Name of the field to insert.
offset	IN: Offset in memory structure of the field to insert.
field_id	IN: Datatype identifier of the field to insert.

Returns: a non-negative value if successful

Exceptions

HDF5LibraryException	Error from the HDF5 Library.
NullPointerException	name is null.

◆ H5Tis_variable_str()

static synchronized native boolean H5Tis_variable_str ( long type_id ) throws HDF5LibraryException

static

H5Tis_variable_str determines whether the datatype identified in type_id is a variable-length string.

Parameters

type_id IN: Identifier of datatype to query.

Returns: true if type_id is a variable-length string.

Exceptions

HDF5LibraryException Error from the HDF5 Library.

◆ H5Tlock()

static synchronized native int H5Tlock ( long type_id ) throws HDF5LibraryException

static

H5Tlock locks the datatype specified by the type_id identifier, making it read-only and non-destrucible.

Parameters

type_id IN: Identifier of datatype to lock.

Returns: a non-negative value if successful

Exceptions

HDF5LibraryException Error from the HDF5 Library.

◆ H5Topen()

static long H5Topen	(	long	loc_id,
		String	name,
		long	tapl_id
	)		throws HDF5LibraryException, NullPointerException

static

H5Topen opens a named datatype at the location specified by loc_id and return an identifier for the datatype.

Parameters

loc_id	IN: A file, group, or datatype identifier.
name	IN: A datatype name, defined within the file or group identified by loc_id.
tapl_id	IN: Datatype access property list.

Returns: a named datatype identifier if successful

Exceptions

HDF5LibraryException	Error from the HDF5 Library.
NullPointerException	name is null.

◆ H5Tpack()

static synchronized native int H5Tpack ( long type_id ) throws HDF5LibraryException

static

H5Tpack recursively removes padding from within a compound datatype to make it more efficient (space-wise) to store that data.

WARNING: This call only affects the C-data, even if it succeeds, there may be no visible effect on Java objects.

Parameters

type_id IN: Identifier of datatype to modify.

Returns: a non-negative value if successful

Exceptions

HDF5LibraryException Error from the HDF5 Library.

◆ H5Treclaim()

static synchronized native void H5Treclaim	(	long	type_id,
		long	space_id,
		long	xfer_plist_id,
		byte[]	buf
	)		throws HDF5LibraryException, NullPointerException

static

H5Treclaim reclaims buffer used for VL data.

Parameters

type_id	Identifier of the datatype.
space_id	Identifier of the dataspace.
xfer_plist_id	Identifier of a transfer property list for this I/O operation.
buf	Buffer with data to be reclaimed.

Exceptions

HDF5LibraryException	Error from the HDF5 Library.
NullPointerException	buf is null.

◆ H5Trefresh()

static synchronized native void H5Trefresh ( long dtype_id ) throws HDF5LibraryException

static

H5Trefresh causes all buffers associated with a committed datatype to be cleared and immediately re-loaded with updated contents from disk. This function essentially closes the datatype, evicts all metadata associated with it from the cache, and then re-opens the datatype. The reopened datatype is automatically re-registered with the same ID.

Parameters

dtype_id IN: Identifier of the committed datatype to be refreshed.

Exceptions

HDF5LibraryException Error from the HDF5 Library.

◆ H5Tset_cset()

static synchronized native int H5Tset_cset	(	long	type_id,
		int	cset
	)		throws HDF5LibraryException

static

H5Tset_cset the character set to be used.

Parameters

type_id	IN: Identifier of datatype to modify.
cset	IN: Character set type.

Returns: a non-negative value if successful

Exceptions

HDF5LibraryException Error from the HDF5 Library.

◆ H5Tset_ebias() [1/2]

static int H5Tset_ebias	(	long	type_id,
		int	ebias
	)		throws HDF5LibraryException

static

H5Tset_ebias sets the exponent bias of a floating-point type.

Parameters

type_id	Identifier of datatype to set.
ebias	Exponent bias value.

Returns: a non-negative value if successful

Exceptions

HDF5LibraryException Error from the HDF5 Library.

◆ H5Tset_ebias() [2/2]

static synchronized native void H5Tset_ebias	(	long	type_id,
		long	ebias
	)		throws HDF5LibraryException

static

H5Tset_ebias sets the exponent bias of a floating-point type.

Parameters

type_id	IN: Identifier of datatype to set.
ebias	IN: Exponent bias value.

Exceptions

HDF5LibraryException Error from the HDF5 Library.

◆ H5Tset_fields() [1/2]

static int H5Tset_fields	(	long	type_id,
		int	spos,
		int	epos,
		int	esize,
		int	mpos,
		int	msize
	)		throws HDF5LibraryException

static

H5Tset_fields sets the locations and sizes of the various floating point bit fields.

Parameters

type_id	Identifier of datatype to set.
spos	Size position.
epos	Exponent bit position.
esize	Size of exponent in bits.
mpos	Mantissa bit position.
msize	Size of mantissa in bits.

Returns: a non-negative value if successful

Exceptions

HDF5LibraryException Error from the HDF5 Library.

◆ H5Tset_fields() [2/2]

static synchronized native void H5Tset_fields	(	long	type_id,
		long	spos,
		long	epos,
		long	esize,
		long	mpos,
		long	msize
	)		throws HDF5LibraryException

static

H5Tset_fields sets the locations and sizes of the various floating point bit fields.

Parameters

type_id	IN: Identifier of datatype to set.
spos	IN: Size position.
epos	IN: Exponent bit position.
esize	IN: Size of exponent in bits.
mpos	IN: Mantissa bit position.
msize	IN: Size of mantissa in bits.

Exceptions

HDF5LibraryException Error from the HDF5 Library.

◆ H5Tset_inpad()

static synchronized native int H5Tset_inpad	(	long	type_id,
		int	inpad
	)		throws HDF5LibraryException

static

If any internal bits of a floating point type are unused (that is, those significant bits which are not part of the sign, exponent, or mantissa), then H5Tset_inpad will be filled according to the value of the padding value property inpad.

Parameters

type_id	IN: Identifier of datatype to modify.
inpad	IN: Padding type.

Returns: a non-negative value if successful

Exceptions

HDF5LibraryException Error from the HDF5 Library.

◆ H5Tset_norm()

static synchronized native int H5Tset_norm	(	long	type_id,
		int	norm
	)		throws HDF5LibraryException

static

H5Tset_norm sets the mantissa normalization of a floating-point datatype.

Parameters

type_id	IN: Identifier of datatype to set.
norm	IN: Mantissa normalization type.

Returns: a non-negative value if successful

Exceptions

HDF5LibraryException Error from the HDF5 Library.

◆ H5Tset_offset() [1/2]

static int H5Tset_offset	(	long	type_id,
		int	offset
	)		throws HDF5LibraryException

static

H5Tset_offset sets the bit offset of the first significant bit.

Parameters

type_id	Identifier of datatype to set.
offset	Offset of first significant bit.

Returns: a non-negative value if successful

Exceptions

HDF5LibraryException Error from the HDF5 Library.

◆ H5Tset_offset() [2/2]

static synchronized native void H5Tset_offset	(	long	type_id,
		long	offset
	)		throws HDF5LibraryException

static

H5Tset_offset sets the bit offset of the first significant bit.

Parameters

type_id	IN: Identifier of datatype to set.
offset	IN: Offset of first significant bit.

Exceptions

HDF5LibraryException Error from the HDF5 Library.

◆ H5Tset_order()

static synchronized native int H5Tset_order	(	long	type_id,
		int	order
	)		throws HDF5LibraryException

static

H5Tset_order sets the byte ordering of an atomic datatype.

Parameters

type_id	IN: Identifier of datatype to set.
order	IN: Byte ordering constant.

Returns: a non-negative value if successful

Exceptions

HDF5LibraryException Error from the HDF5 Library.

◆ H5Tset_pad()

static synchronized native int H5Tset_pad	(	long	type_id,
		int	lsb,
		int	msb
	)		throws HDF5LibraryException

static

H5Tset_pad sets the least and most-significant bits padding types.

Parameters

type_id	IN: Identifier of datatype to set.
lsb	IN: Padding type for least-significant bits.
msb	IN: Padding type for most-significant bits.

Returns: a non-negative value if successful

Exceptions

HDF5LibraryException Error from the HDF5 Library.

◆ H5Tset_precision() [1/2]

static int H5Tset_precision	(	long	type_id,
		int	precision
	)		throws HDF5LibraryException

static

H5Tset_precision sets the precision of an atomic datatype.

Parameters

type_id	Identifier of datatype to set.
precision	Number of bits of precision for datatype.

Returns: a non-negative value if successful

Exceptions

HDF5LibraryException Error from the HDF5 Library.

◆ H5Tset_precision() [2/2]

static synchronized native void H5Tset_precision	(	long	type_id,
		long	precision
	)		throws HDF5LibraryException

static

H5Tset_precision sets the precision of an atomic datatype.

Parameters

type_id	IN: Identifier of datatype to set.
precision	IN: Number of bits of precision for datatype.

Exceptions

HDF5LibraryException Error from the HDF5 Library.

◆ H5Tset_sign()

static synchronized native int H5Tset_sign	(	long	type_id,
		int	sign
	)		throws HDF5LibraryException

static

H5Tset_sign sets the sign property for an integer type.

Parameters

type_id	IN: Identifier of datatype to set.
sign	IN: Sign type.

Returns: a non-negative value if successful

Exceptions

HDF5LibraryException Error from the HDF5 Library.

◆ H5Tset_size()

static synchronized native int H5Tset_size	(	long	type_id,
		long	size
	)		throws HDF5LibraryException

static

H5Tset_size sets the total size in bytes, size, for an atomic datatype (this operation is not permitted on compound datatypes).

Parameters

type_id	IN: Identifier of datatype to change size.
size	IN: Size in bytes to modify datatype.

Returns: a non-negative value if successful

Exceptions

HDF5LibraryException Error from the HDF5 Library.

◆ H5Tset_strpad()

static synchronized native int H5Tset_strpad	(	long	type_id,
		int	strpad
	)		throws HDF5LibraryException

static

H5Tset_strpad defines the storage mechanism for the string.

Parameters

type_id	IN: Identifier of datatype to modify.
strpad	IN: String padding type.

Returns: a non-negative value if successful

Exceptions

HDF5LibraryException Error from the HDF5 Library.

◆ H5Tset_tag()

static synchronized native int H5Tset_tag	(	long	type,
		String	tag
	)		throws HDF5LibraryException

static

H5Tset_tag tags an opaque datatype type_id with a unique ASCII identifier tag.

Parameters

type	IN: Datatype identifier for the opaque datatype to be tagged.
tag	IN: Descriptive ASCII string with which the opaque datatype is to be tagged.

Returns: a non-negative value if successful

Exceptions

HDF5LibraryException Error from the HDF5 Library.

◆ H5Tvlen_create()

static long H5Tvlen_create ( long base_id ) throws HDF5LibraryException

static

H5Tvlen_create creates a new variable-length (VL) datatype.

Parameters

base_id IN: Identifier of parent datatype.

Returns: a non-negative value if successful

Exceptions

HDF5LibraryException Error from the HDF5 Library.

Detailed Description

Functions

Function Documentation

◆ H5Tarray_create()

◆ H5Tclose()

◆ H5Tcommit()

◆ H5Tcommit_anon()

◆ H5Tcommitted()

◆ H5Tcompiler_conv()

◆ H5Tconvert()

◆ H5Tcopy()

◆ H5Tcreate()

◆ H5Tdecode()

◆ H5Tdetect_class()

◆ H5Tencode()

◆ H5Tenum_create()

◆ H5Tenum_insert() [1/3]

◆ H5Tenum_insert() [2/3]

◆ H5Tenum_insert() [3/3]

◆ H5Tenum_nameof() [1/2]

◆ H5Tenum_nameof() [2/2]

◆ H5Tenum_valueof() [1/2]

◆ H5Tenum_valueof() [2/2]

◆ H5Tequal()

◆ H5Tflush()

◆ H5Tget_array_dims()

◆ H5Tget_array_dims2()

◆ H5Tget_array_ndims()

◆ H5Tget_class()

◆ H5Tget_class_name()

◆ H5Tget_create_plist()

◆ H5Tget_cset()

◆ H5Tget_ebias()

◆ H5Tget_ebias_long()

◆ H5Tget_fields() [1/2]

◆ H5Tget_fields() [2/2]

◆ H5Tget_inpad()

◆ H5Tget_member_class()

◆ H5Tget_member_index()

◆ H5Tget_member_name()

◆ H5Tget_member_offset()

◆ H5Tget_member_type()

◆ H5Tget_member_value() [1/2]

◆ H5Tget_member_value() [2/2]

◆ H5Tget_native_type() [1/2]

◆ H5Tget_native_type() [2/2]

◆ H5Tget_nmembers()

◆ H5Tget_norm()

◆ H5Tget_offset()

◆ H5Tget_order()

◆ H5Tget_pad()

◆ H5Tget_precision()

◆ H5Tget_precision_long()

◆ H5Tget_sign()

◆ H5Tget_size()

◆ H5Tget_strpad()

◆ H5Tget_super()

◆ H5Tget_tag()

◆ H5Tinsert()

◆ H5Tis_variable_str()

◆ H5Tlock()

◆ H5Topen()

◆ H5Tpack()

◆ H5Treclaim()

◆ H5Trefresh()

◆ H5Tset_cset()

◆ H5Tset_ebias() [1/2]

◆ H5Tset_ebias() [2/2]

◆ H5Tset_fields() [1/2]

◆ H5Tset_fields() [2/2]

◆ H5Tset_inpad()

◆ H5Tset_norm()

◆ H5Tset_offset() [1/2]

◆ H5Tset_offset() [2/2]

◆ H5Tset_order()

◆ H5Tset_pad()

◆ H5Tset_precision() [1/2]

◆ H5Tset_precision() [2/2]

◆ H5Tset_sign()

◆ H5Tset_size()