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HDF5 1.14.5
API Reference
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Java Link (H5L) Interface

Detailed Description

See also
Links (H5L), C-API
HDF5 Links, User Guide

Functions

static synchronized native void H5Lcopy (long src_loc, String src_name, long dst_loc, String dst_name, long lcpl_id, long lapl_id) throws HDF5LibraryException, NullPointerException
 
static synchronized native void H5Lcreate_external (String file_name, String obj_name, long link_loc_id, String link_name, long lcpl_id, long lapl_id) throws HDF5LibraryException, NullPointerException
 
static synchronized native void H5Lcreate_hard (long cur_loc, String cur_name, long dst_loc, String dst_name, long lcpl_id, long lapl_id) throws HDF5LibraryException, NullPointerException
 
static synchronized native void H5Lcreate_soft (String link_target, long link_loc_id, String link_name, long lcpl_id, long lapl_id) throws HDF5LibraryException, NullPointerException
 
static synchronized native void H5Ldelete (long loc_id, String name, long lapl_id) throws HDF5LibraryException, NullPointerException
 
static synchronized native void H5Ldelete_by_idx (long loc_id, String group_name, int idx_type, int order, long n, long lapl_id) throws HDF5LibraryException, NullPointerException
 
static synchronized native boolean H5Lexists (long loc_id, String name, long lapl_id) throws HDF5LibraryException, NullPointerException
 
static synchronized native H5L_info_t H5Lget_info (long loc_id, String name, long lapl_id) throws HDF5LibraryException, NullPointerException
 
static synchronized native H5L_info_t H5Lget_info_by_idx (long loc_id, String group_name, int idx_type, int order, long n, long lapl_id) throws HDF5LibraryException, NullPointerException
 
static synchronized native String H5Lget_name_by_idx (long loc_id, String group_name, int idx_type, int order, long n, long lapl_id) throws HDF5LibraryException, NullPointerException
 
static synchronized native int H5Lget_value (long loc_id, String name, String[] link_value, long lapl_id) throws HDF5LibraryException, NullPointerException
 
static synchronized native int H5Lget_value_by_idx (long loc_id, String group_name, int idx_type, int order, long n, String[] link_value, long lapl_id) throws HDF5LibraryException, NullPointerException
 
static synchronized native int H5Literate (long grp_id, int idx_type, int order, long idx, H5L_iterate_t op, H5L_iterate_opdata_t op_data) throws HDF5LibraryException
 
static synchronized native int H5Literate_by_name (long grp_id, String group_name, int idx_type, int order, long idx, H5L_iterate_t op, H5L_iterate_opdata_t op_data, long lapl_id) throws HDF5LibraryException, NullPointerException
 
static synchronized native void H5Lmove (long src_loc, String src_name, long dst_loc, String dst_name, long lcpl_id, long lapl_id) throws HDF5LibraryException, NullPointerException
 
static synchronized native int H5Lvisit (long grp_id, int idx_type, int order, H5L_iterate_t op, H5L_iterate_opdata_t op_data) throws HDF5LibraryException
 
static synchronized native int H5Lvisit_by_name (long loc_id, String group_name, int idx_type, int order, H5L_iterate_t op, H5L_iterate_opdata_t op_data, long lapl_id) throws HDF5LibraryException, NullPointerException
 
static synchronized native int H5Lis_registered (int link_cls_id) throws HDF5LibraryException
 
static synchronized native void H5Lunregister (int link_cls_id) throws HDF5LibraryException
 

Function Documentation

◆ H5Lcopy()

static synchronized native void H5Lcopy ( long  src_loc,
String  src_name,
long  dst_loc,
String  dst_name,
long  lcpl_id,
long  lapl_id 
) throws HDF5LibraryException, NullPointerException
static

H5Lcopy copies a link from one location to another.

Parameters
src_locIN: Location identifier of the source link
src_nameIN: Name of the link to be copied
dst_locIN: Location identifier specifying the destination of the copy
dst_nameIN: Name to be assigned to the new copy
lcpl_idIN: Link creation property list identifier
lapl_idIN: Link access property list identifier
Exceptions
HDF5LibraryExceptionError from the HDF5 Library.
NullPointerExceptionname is null.

◆ H5Lcreate_external()

static synchronized native void H5Lcreate_external ( String  file_name,
String  obj_name,
long  link_loc_id,
String  link_name,
long  lcpl_id,
long  lapl_id 
) throws HDF5LibraryException, NullPointerException
static

H5Lcreate_external creates a new soft link to an external object, which is an object in a different HDF5 file from the location of the link.

Parameters
file_nameIN: Name of the target file containing the target object.
obj_nameIN: Path within the target file to the target object.
link_loc_idIN: The file or group identifier for the new link.
link_nameIN: The name of the new link.
lcpl_idIN: Link creation property list identifier
lapl_idIN: Link access property list identifier
Exceptions
HDF5LibraryExceptionError from the HDF5 Library.
NullPointerExceptionname is null.

◆ H5Lcreate_hard()

static synchronized native void H5Lcreate_hard ( long  cur_loc,
String  cur_name,
long  dst_loc,
String  dst_name,
long  lcpl_id,
long  lapl_id 
) throws HDF5LibraryException, NullPointerException
static

H5Lcreate_hard creates a new hard link to a pre-existing object in an HDF5 file.

Parameters
cur_locIN: The file or group identifier for the target object.
cur_nameIN: Name of the target object, which must already exist.
dst_locIN: The file or group identifier for the new link.
dst_nameIN: The name of the new link.
lcpl_idIN: Link creation property list identifier
lapl_idIN: Link access property list identifier
Exceptions
HDF5LibraryExceptionError from the HDF5 Library.
NullPointerExceptioncur_name or dst_name is null.

◆ H5Lcreate_soft()

static synchronized native void H5Lcreate_soft ( String  link_target,
long  link_loc_id,
String  link_name,
long  lcpl_id,
long  lapl_id 
) throws HDF5LibraryException, NullPointerException
static

H5Lcreate_soft creates a new soft link to an object in an HDF5 file.

Parameters
link_targetIN: Path to the target object, which is not required to exist.
link_loc_idIN: The file or group identifier for the new link.
link_nameIN: The name of the new link.
lcpl_idIN: Link creation property list identifier
lapl_idIN: Link access property list identifier
Exceptions
HDF5LibraryExceptionError from the HDF5 Library.
NullPointerExceptionlink_name is null.

◆ H5Ldelete()

static synchronized native void H5Ldelete ( long  loc_id,
String  name,
long  lapl_id 
) throws HDF5LibraryException, NullPointerException
static

H5Ldelete removes the link specified from a group.

Parameters
loc_idIN: Identifier of the file or group containing the object.
nameIN: Name of the link to delete.
lapl_idIN: Link access property list identifier
Exceptions
HDF5LibraryExceptionError from the HDF5 Library.
NullPointerExceptionname is null.

◆ H5Ldelete_by_idx()

static synchronized native void H5Ldelete_by_idx ( long  loc_id,
String  group_name,
int  idx_type,
int  order,
long  n,
long  lapl_id 
) throws HDF5LibraryException, NullPointerException
static

H5Ldelete_by_idx removes the nth link in a group according to the specified order and in the specified index.

Parameters
loc_idIN: File or group identifier specifying location of subject group
group_nameIN: Name of subject group
idx_typeIN: Index or field which determines the order
orderIN: Order within field or index
nIN: Link for which to retrieve information
lapl_idIN: Link access property list identifier
Exceptions
HDF5LibraryExceptionError from the HDF5 Library.
NullPointerExceptiongroup_name is null.

◆ H5Lexists()

static synchronized native boolean H5Lexists ( long  loc_id,
String  name,
long  lapl_id 
) throws HDF5LibraryException, NullPointerException
static

H5Lexists checks if a link with a particular name exists in a group.

Parameters
loc_idIN: Identifier of the file or group to query.
nameIN: The name of the link to check.
lapl_idIN: Link access property list identifier
Returns
a boolean, true if the name exists, otherwise false.
Exceptions
HDF5LibraryExceptionError from the HDF5 Library.
NullPointerExceptionname is null.

◆ H5Lget_info()

static synchronized native H5L_info_t H5Lget_info ( long  loc_id,
String  name,
long  lapl_id 
) throws HDF5LibraryException, NullPointerException
static

H5Lget_info returns information about the specified link.

Parameters
loc_idIN: Identifier of the file or group.
nameIN: Name of the link for which information is being sought.
lapl_idIN: Link access property list identifier
Returns
a buffer(H5L_info_t) for the link information.
Exceptions
HDF5LibraryExceptionError from the HDF5 Library.
NullPointerExceptionname is null.

◆ H5Lget_info_by_idx()

static synchronized native H5L_info_t H5Lget_info_by_idx ( long  loc_id,
String  group_name,
int  idx_type,
int  order,
long  n,
long  lapl_id 
) throws HDF5LibraryException, NullPointerException
static

H5Lget_info_by_idx opens a named datatype at the location specified by loc_id and return an identifier for the datatype.

Parameters
loc_idIN: File or group identifier specifying location of subject group
group_nameIN: Name of subject group
idx_typeIN: Type of index
orderIN: Order within field or index
nIN: Link for which to retrieve information
lapl_idIN: Link access property list identifier
Returns
a buffer(H5L_info_t) for the link information.
Exceptions
HDF5LibraryExceptionError from the HDF5 Library.
NullPointerExceptiongroup_name is null.

◆ H5Lget_name_by_idx()

static synchronized native String H5Lget_name_by_idx ( long  loc_id,
String  group_name,
int  idx_type,
int  order,
long  n,
long  lapl_id 
) throws HDF5LibraryException, NullPointerException
static

H5Lget_name_by_idx retrieves name of the nth link in a group, according to the order within a specified field or index.

Parameters
loc_idIN: File or group identifier specifying location of subject group
group_nameIN: Name of subject group
idx_typeIN: Type of index
orderIN: Order within field or index
nIN: Link for which to retrieve information
lapl_idIN: Link access property list identifier
Returns
a String for the link name.
Exceptions
HDF5LibraryExceptionError from the HDF5 Library.
NullPointerExceptiongroup_name is null.

◆ H5Lget_value()

static synchronized native int H5Lget_value ( long  loc_id,
String  name,
String[]  link_value,
long  lapl_id 
) throws HDF5LibraryException, NullPointerException
static

H5Lget_value returns the link value of a symbolic link. Note that this function is a combination of H5Lget_info(), H5Lget_val() and for external links, H5Lunpack_elink_val.

Parameters
loc_idIN: Identifier of the file or group containing the object.
nameIN: Name of the symbolic link.
link_valueOUT: Path of the symbolic link, or the file_name and path of an external file.
lapl_idIN: Link access property list identifier
Returns
the link type
Exceptions
HDF5LibraryExceptionError from the HDF5 Library.
NullPointerExceptionname is null.

◆ H5Lget_value_by_idx()

static synchronized native int H5Lget_value_by_idx ( long  loc_id,
String  group_name,
int  idx_type,
int  order,
long  n,
String[]  link_value,
long  lapl_id 
) throws HDF5LibraryException, NullPointerException
static

H5Lget_value_by_idx retrieves value of the nth link in a group, according to the order within an index. Note that this function is a combination of H5Lget_info(), H5Lget_val() and for external links, H5Lunpack_elink_val.

Parameters
loc_idIN: File or group identifier specifying location of subject group
group_nameIN: Name of subject group
idx_typeIN: Type of index
orderIN: Order within field or index
nIN: Link for which to retrieve information
link_valueOUT: Path of the symbolic link, or the file_name and path of an external file.
lapl_idIN: Link access property list identifier
Returns
the link type
Exceptions
HDF5LibraryExceptionError from the HDF5 Library.
NullPointerExceptiongroup_name is null.

◆ H5Lis_registered()

static synchronized native int H5Lis_registered ( int  link_cls_id) throws HDF5LibraryException
static

H5Lis_registered tests whether a user-defined link class is currently registered, either by the HDF5 Library or by the user through the use of H5Lregister.

Parameters
link_cls_idIN: User-defined link class identifier
Returns
Returns a positive value if the link class has been registered and zero if it is unregistered. Otherwise returns a negative value; this may mean that the identifier is not a valid user-defined class identifier.
Exceptions
HDF5LibraryExceptionError from the HDF5 Library.

◆ H5Literate()

static synchronized native int H5Literate ( long  grp_id,
int  idx_type,
int  order,
long  idx,
H5L_iterate_t  op,
H5L_iterate_opdata_t  op_data 
) throws HDF5LibraryException
static

H5Literate iterates through links in a group.

Parameters
grp_idIN: Identifier specifying subject group
idx_typeIN: Type of index
orderIN: Order of iteration within index
idxIN: Iteration position at which to start
opIN: Callback function passing data regarding the link to the calling application
op_dataIN: User-defined pointer to data required by the application for its processing of the link
Returns
returns the return value of the first operator that returns a positive value, or zero if all members were processed with no operator returning non-zero.
Exceptions
HDF5LibraryExceptionError from the HDF5 Library.

◆ H5Literate_by_name()

static synchronized native int H5Literate_by_name ( long  grp_id,
String  group_name,
int  idx_type,
int  order,
long  idx,
H5L_iterate_t  op,
H5L_iterate_opdata_t  op_data,
long  lapl_id 
) throws HDF5LibraryException, NullPointerException
static

H5Literate_by_name iterates through links in a group.

Parameters
grp_idIN: Identifier specifying subject group
group_nameIN: Name of subject group
idx_typeIN: Type of index
orderIN: Order of iteration within index
idxIN: Iteration position at which to start
opIN: Callback function passing data regarding the link to the calling application
op_dataIN: User-defined pointer to data required by the application for its processing of the link
lapl_idIN: Link access property list identifier
Returns
returns the return value of the first operator that returns a positive value, or zero if all members were processed with no operator returning non-zero.
Exceptions
HDF5LibraryExceptionError from the HDF5 Library.
NullPointerExceptiongroup_name is null.

◆ H5Lmove()

static synchronized native void H5Lmove ( long  src_loc,
String  src_name,
long  dst_loc,
String  dst_name,
long  lcpl_id,
long  lapl_id 
) throws HDF5LibraryException, NullPointerException
static

H5Lmove renames a link within an HDF5 file.

Parameters
src_locIN: Original file or group identifier.
src_nameIN: Original link name.
dst_locIN: Destination file or group identifier.
dst_nameIN: New link name.
lcpl_idIN: Link creation property list identifier to be associated with the new link.
lapl_idIN: Link access property list identifier to be associated with the new link.
Exceptions
HDF5LibraryExceptionError from the HDF5 Library.
NullPointerExceptionname is null.

◆ H5Lunregister()

static synchronized native void H5Lunregister ( int  link_cls_id) throws HDF5LibraryException
static

H5Lunregister unregisters a class of user-defined links, preventing them from being traversed, queried, moved, etc.

Parameters
link_cls_idIN: User-defined link class identifier
Exceptions
HDF5LibraryExceptionError from the HDF5 Library.

◆ H5Lvisit()

static synchronized native int H5Lvisit ( long  grp_id,
int  idx_type,
int  order,
H5L_iterate_t  op,
H5L_iterate_opdata_t  op_data 
) throws HDF5LibraryException
static

H5Lvisit recursively visits all links starting from a specified group.

Parameters
grp_idIN: Identifier specifying subject group
idx_typeIN: Type of index
orderIN: Order of iteration within index
opIN: Callback function passing data regarding the link to the calling application
op_dataIN: User-defined pointer to data required by the application for its processing of the link
Returns
returns the return value of the first operator that returns a positive value, or zero if all members were processed with no operator returning non-zero.
Exceptions
HDF5LibraryExceptionError from the HDF5 Library.

◆ H5Lvisit_by_name()

static synchronized native int H5Lvisit_by_name ( long  loc_id,
String  group_name,
int  idx_type,
int  order,
H5L_iterate_t  op,
H5L_iterate_opdata_t  op_data,
long  lapl_id 
) throws HDF5LibraryException, NullPointerException
static

H5Lvisit_by_name recursively visits all links starting from a specified group.

Parameters
loc_idIN: Identifier specifying subject group
group_nameIN: Name of subject group
idx_typeIN: Type of index
orderIN: Order of iteration within index
opIN: Callback function passing data regarding the link to the calling application
op_dataIN: User-defined pointer to data required by the application for its processing of the link
lapl_idIN: link access property
Returns
returns the return value of the first operator that returns a positive value, or zero if all members were processed with no operator returning non-zero.
Exceptions
HDF5LibraryExceptionError from the HDF5 Library.
NullPointerExceptiongroup_name is null.