cms::h5::Attribute Class Reference

#include <h5_Attribute.h>

Public Member Functions
	Attribute (hid_t, std::string const &)
	Attribute (const Attribute &)=delete
	Attribute (Attribute &&)=delete
Attribute &	operator= (const Attribute &)=delete
Attribute &	operator= (Attribute &&)=delete
std::string	readString () const
uint32_t	readUInt32 () const
	~Attribute ()

Private Attributes
hid_t	id_

Detailed Description

Definition at line 31 of file h5_Attribute.h.

Constructor & Destructor Documentation

Attribute() [1/3]

Attribute::Attribute	(	hid_t	iParentID,
		std::string const &	iName
	)

Definition at line 31 of file h5_Attribute.cc.

References Exception, and id_.

      : id_(H5Aopen(iParentID, iName.c_str(), H5P_DEFAULT)) {
    if (id_ < 1) {
      throw cms::Exception("UnknownH5Attribute") << "unknown attribute " << iName;
    }
  }

~Attribute()

Attribute::~Attribute

(

)

Definition at line 43 of file h5_Attribute.cc.

References id_.

{ H5Aclose(id_); }

Attribute() [2/3]

cms::h5::Attribute::Attribute ( const Attribute &  )

delete

Attribute() [3/3]

cms::h5::Attribute::Attribute ( Attribute &&  )

delete

Member Function Documentation

operator=() [1/2]

Attribute& cms::h5::Attribute::operator= ( const Attribute &  )

delete

operator=() [2/2]

Attribute& cms::h5::Attribute::operator= ( Attribute &&  )

delete

readString()

std::string Attribute::readString

(

)

const

Definition at line 64 of file h5_Attribute.cc.

References Exception, free(), id_, AlCaHLTBitMon_QueryRunRegistry::string, and funct::void.

                                        {
    // Prepare and call C API to read attribute.
    char* strg_C;

    hid_t attr_type = H5Tcopy(H5T_C_S1);
    (void)H5Tset_size(attr_type, H5T_VARIABLE);

    // Read attribute, no allocation for variable-len string; C library will
    herr_t ret_value = H5Aread(id_, attr_type, &strg_C);
    H5Tclose(attr_type);

    if (ret_value < 0) {
      throw cms::Exception("H5AttributeReadStrinFailed") << " failed to read string from attribute";
    }

    // Get string from the C char* and release resource allocated by C API
    std::string strg = strg_C;
    free(strg_C);

    return strg;
  }

readUInt32()

uint32_t Attribute::readUInt32

(

)

const

Definition at line 86 of file h5_Attribute.cc.

References Exception, id_, and runTheMatrix::ret.

                                       {
    unsigned int ret;
    // Read attribute, no allocation for variable-len string; C library will
    herr_t ret_value = H5Aread(id_, H5T_NATIVE_UINT, &ret);

    if (ret_value < 0) {
      throw cms::Exception("H5AttributeReadStrinFailed") << " failed to read unsigned int from attribute";
    }
    return ret;
  }

Member Data Documentation

id_

hid_t cms::h5::Attribute::id_

private

Definition at line 51 of file h5_Attribute.h.

Referenced by Attribute(), readString(), readUInt32(), and ~Attribute().