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Diffstat (limited to 'c++/src/H5Object.cpp')
| -rw-r--r-- | c++/src/H5Object.cpp | 210 |
1 files changed, 209 insertions, 1 deletions
diff --git a/c++/src/H5Object.cpp b/c++/src/H5Object.cpp index 60e7afb..933e8ec 100644 --- a/c++/src/H5Object.cpp +++ b/c++/src/H5Object.cpp @@ -22,8 +22,8 @@ #include "H5PropList.h" #include "H5DataSpace.h" #include "H5AbstractDs.h" -#include "H5Attribute.h" #include "H5Location.h" +#include "H5Attribute.h" #include "H5Object.h" #include "H5DataType.h" @@ -64,6 +64,214 @@ H5Object::H5Object() : H5Location() {} //-------------------------------------------------------------------------- // H5Object::H5Object(const H5Object& original) : H5Location() {} +/*************************************************************************** + Notes for H5A wrappers + ====================== +May, 2017 (1.8.19) + These H5A wrappers are copied from H5Location to prevent an attribute + id being passed in to H5A APIs. The original H5A wrapper functions + in H5Location will be deprecated in future releases. + +***************************************************************************/ + +//-------------------------------------------------------------------------- +// Function: H5Object::createAttribute +///\brief Creates an attribute for a group, dataset, or named datatype. +///\param name - IN: Name of the attribute +///\param data_type - IN: Datatype for the attribute +///\param data_space - IN: Dataspace for the attribute - only simple +/// dataspaces are allowed at this time +///\param create_plist - IN: Creation property list - default to +/// PropList::DEFAULT +///\return Attribute instance +///\exception H5::AttributeIException +///\par Description +/// The attribute name specified in \a name must be unique. +/// Attempting to create an attribute with the same name as an +/// existing attribute will raise an exception, leaving the +/// pre-existing attribute intact. To overwrite an existing +/// attribute with a new attribute of the same name, first +/// delete the existing one with \c H5Object::removeAttr, then +/// recreate it with this function. +// Programmer Binh-Minh Ribler - 2000 +//-------------------------------------------------------------------------- +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 = H5Acreate2(getId(), name, type_id, space_id, plist_id, H5P_DEFAULT); + + // If the attribute id is valid, create and return the Attribute object + if (attr_id > 0) + { + Attribute attr; + f_Attribute_setId(&attr, attr_id); + return(attr); + } + else + throw AttributeIException(inMemFunc("createAttribute"), "H5Acreate2 failed"); +} + +//-------------------------------------------------------------------------- +// Function: H5Object::createAttribute +///\brief This is an overloaded member function, provided for convenience. +/// It differs from the above function in that it takes +/// a reference to an \c H5std_string for \a name. +// Programmer Binh-Minh Ribler - 2000 +//-------------------------------------------------------------------------- +Attribute H5Object::createAttribute(const H5std_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)); +} + +//-------------------------------------------------------------------------- +// Function: H5Object::openAttribute +///\brief Opens an attribute given its name. +///\param name - IN: Name of the attribute +///\return Attribute instance +///\exception H5::AttributeIException +// Programmer Binh-Minh Ribler - 2000 +//-------------------------------------------------------------------------- +Attribute H5Object::openAttribute(const char* name) const +{ + hid_t attr_id = H5Aopen(getId(), name, H5P_DEFAULT); + if (attr_id > 0) + { + Attribute attr; + f_Attribute_setId(&attr, attr_id); + return(attr); + } + else + { + throw AttributeIException(inMemFunc("openAttribute"), "H5Aopen failed"); + } +} + +//-------------------------------------------------------------------------- +// Function: H5Object::openAttribute +///\brief This is an overloaded member function, provided for convenience. +/// It differs from the above function in that it takes +/// a reference to an \c H5std_string for \a name. +// Programmer Binh-Minh Ribler - 2000 +//-------------------------------------------------------------------------- +Attribute H5Object::openAttribute(const H5std_string& name) const +{ + return(openAttribute(name.c_str())); +} + +//-------------------------------------------------------------------------- +// Function: H5Object::openAttribute +///\brief Opens an attribute given its index. +///\param idx - IN: Index of the attribute, a 0-based, non-negative integer +///\return Attribute instance +///\exception H5::AttributeIException +// Programmer Binh-Minh Ribler - 2000 +//-------------------------------------------------------------------------- +Attribute H5Object::openAttribute(const unsigned int idx) const +{ + hid_t attr_id = H5Aopen_by_idx(getId(), ".", H5_INDEX_CRT_ORDER, + H5_ITER_INC, static_cast<hsize_t>(idx), H5P_DEFAULT, H5P_DEFAULT); + if (attr_id > 0) + { + Attribute attr; + f_Attribute_setId(&attr, attr_id); + return(attr); + } + else + { + throw AttributeIException(inMemFunc("openAttribute"), "H5Aopen_by_idx failed"); + } +} + +//-------------------------------------------------------------------------- +// Function: H5Object::attrExists +///\brief Checks whether the named attribute exists at this location. +///\param name - IN: Name of the attribute to be queried +///\exception H5::AttributeIException +// Programmer Binh-Minh Ribler - 2013 +//-------------------------------------------------------------------------- +bool H5Object::attrExists(const char* name) const +{ + // Call C routine H5Aexists to determine whether an attribute exists + // at this location, which could be specified by a file, group, dataset, + // or named datatype. + herr_t ret_value = H5Aexists(getId(), name); + if(ret_value > 0) + return true; + else if(ret_value == 0) + return false; + else // Raise exception when H5Aexists returns a negative value + throw AttributeIException(inMemFunc("attrExists"), "H5Aexists failed"); +} + +//-------------------------------------------------------------------------- +// Function: H5Object::attrExists +///\brief This is an overloaded member function, provided for convenience. +/// It differs from the above function in that it takes +/// a reference to an \c H5std_string for \a name. +// Programmer Binh-Minh Ribler - 2000 +//-------------------------------------------------------------------------- +bool H5Object::attrExists(const H5std_string& name) const +{ + return(attrExists(name.c_str())); +} + +//-------------------------------------------------------------------------- +// Function: H5Object::removeAttr +///\brief Removes the named attribute from this object. +///\param name - IN: Name of the attribute to be removed +///\exception H5::AttributeIException +// Programmer Binh-Minh Ribler - 2000 +//-------------------------------------------------------------------------- +void H5Object::removeAttr(const char* name) const +{ + herr_t ret_value = H5Adelete(getId(), name); + if(ret_value < 0) + throw AttributeIException(inMemFunc("removeAttr"), "H5Adelete failed"); +} + +//-------------------------------------------------------------------------- +// Function: H5Object::removeAttr +///\brief This is an overloaded member function, provided for convenience. +/// It differs from the above function in that it takes +/// a reference to an \c H5std_string for \a name. +// Programmer Binh-Minh Ribler - 2000 +//-------------------------------------------------------------------------- +void H5Object::removeAttr(const H5std_string& name) const +{ + removeAttr(name.c_str()); +} + +//-------------------------------------------------------------------------- +// Function: H5Object::renameAttr +///\brief Renames the named attribute from this object. +///\param oldname - IN: Name of the attribute to be renamed +///\param newname - IN: New name ame of the attribute +///\exception H5::AttributeIException +// Programmer Binh-Minh Ribler - Mar, 2005 +//-------------------------------------------------------------------------- +void H5Object::renameAttr(const char* oldname, const char* newname) const +{ + herr_t ret_value = H5Arename(getId(), oldname, newname); + if (ret_value < 0) + throw AttributeIException(inMemFunc("renameAttr"), "H5Arename failed"); +} + +//-------------------------------------------------------------------------- +// Function: H5Object::renameAttr +///\brief This is an overloaded member function, provided for convenience. +/// It differs from the above function in that it takes +/// a reference to an \c H5std_string for the names. +// Programmer Binh-Minh Ribler - Mar, 2005 +//-------------------------------------------------------------------------- +void H5Object::renameAttr(const H5std_string& oldname, const H5std_string& newname) const +{ + renameAttr (oldname.c_str(), newname.c_str()); +} + +// end of Notes for H5A wrappers + //-------------------------------------------------------------------------- // Function: getObjName ///\brief Given an id, returns the type of the object. |