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#include <string>
#include "H5Include.h"
#include "H5RefCounter.h"
#include "H5Exception.h"
#include "H5IdComponent.h"
#include "H5Idtemplates.h"
#include "H5PropList.h"
#include "H5Object.h"
#include "H5DataType.h"
#include "H5DataSpace.h"
#include "H5AbstractDs.h"
#include "H5Attribute.h"
#ifndef H5_NO_NAMESPACE
namespace H5 {
#endif
// userAttrOpWrpr simply interfaces between the user's function and the
// C library function H5Aiterate; used to resolve the different prototype
// problem. May be moved to Iterator later.
extern "C" herr_t userAttrOpWrpr( hid_t loc_id, const char* attr_name, void* op_data )
{
string s_attr_name = string( attr_name );
UserData4Aiterate* myData = static_cast <UserData4Aiterate *> (op_data);
myData->op( *myData->object, s_attr_name, myData->opData );
return 0;
}
// Default constructor - set id to 0 by default here but may be set
// to a valid HDF5 id, if any, by a subclass constructor.
H5Object::H5Object() : IdComponent() {}
// Constructs an object from an existing HDF5 id
H5Object::H5Object( hid_t object_id ) : IdComponent( object_id ) {}
// Copy constructor: makes a copy of the original H5Object instance
H5Object::H5Object( const H5Object& original ) : IdComponent( original ) {}
// Creates an attribute for a group, dataset, or named datatype.
Attribute H5Object::createAttribute( const char* name, const DataType& data_type, const DataSpace& data_space, const PropList& create_plist ) const
{
hid_t type_id = data_type.getId();
hid_t space_id = data_space.getId();
hid_t plist_id = create_plist.getId();
hid_t attr_id = H5Acreate( id, name, type_id, space_id, plist_id );
// If the attribute id is valid, create and return the Attribute object
if( attr_id > 0 )
{
Attribute attr( attr_id );
return( attr );
}
else
{
throw AttributeIException();
}
}
// Creates an attribute for a group, dataset, or named datatype.
Attribute H5Object::createAttribute( const string& name, const DataType& data_type, const DataSpace& data_space, const PropList& create_plist ) const
{
return( createAttribute( name.c_str(), data_type, data_space, create_plist ));
}
// Opens an attribute given its name; name is given as char*
Attribute H5Object::openAttribute( const char* name ) const
{
hid_t attr_id = H5Aopen_name( id, name );
if( attr_id > 0 )
{
Attribute attr( attr_id );
return( attr );
}
else
{
throw AttributeIException();
}
}
// Opens an attribute given its name; name is given as string
Attribute H5Object::openAttribute( const string& name ) const
{
return( openAttribute( name.c_str()) );
}
// Opens an attribute given its index.
Attribute H5Object::openAttribute( unsigned int idx ) const
{
hid_t attr_id = H5Aopen_idx( id, idx );
if( attr_id > 0 )
{
Attribute attr( attr_id );
return( attr );
}
else
{
throw AttributeIException();
}
}
// Iterates a user's function over all the attributes of the dataset
int H5Object::iterateAttrs( attr_operator_t user_op, unsigned * idx, void *op_data )
{
// store the user's function and data
UserData4Aiterate* userData = new UserData4Aiterate;
userData->opData = op_data;
userData->idx = idx;
userData->op = user_op;
userData->object = this;
// call the C library routine H5Aiterate to iterate the attributes
int ret_value = H5Aiterate( id, idx, userAttrOpWrpr, (void *) userData );
// release memory
delete userData;
if( ret_value >= 0 )
return( ret_value );
else // raise exception when H5Aiterate returns a negative value
{
throw AttributeIException();
}
}
// Determines the number of attributes attached to
int H5Object::getNumAttrs() const
{
int num_attrs = H5Aget_num_attrs( id );
if( num_attrs < 0 )
{
throw AttributeIException();
}
else
return( num_attrs );
}
// Removes the named attribute from this object.
void H5Object::removeAttr( const char* name ) const
{
herr_t ret_value = H5Adelete( id, name );
if( ret_value < 0 )
{
throw AttributeIException();
}
}
void H5Object::removeAttr( const string& name ) const
{
removeAttr( name.c_str() );
}
// Flushes all buffers associated with a file to disk.
void H5Object::flush(H5F_scope_t scope ) const
{
herr_t ret_value = H5Fflush( id, scope );
if( ret_value < 0 )
{
throw FileIException();
}
}
// each subclass' destructor calls the template function resetIdComponent()
// to reset the corresponding IdComponent object and close the HDF5 object
// where appropriate.
H5Object::~H5Object() {}
#ifndef H5_NO_NAMESPACE
} // end namespace
#endif
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