greenplumn CParseHandlerMDGPDBFunc 代码
文件路径：/src/backend/gporca/libnaucrates/include/naucrates/dxl/parser/CParseHandlerMDGPDBFunc.h
/---------------------------------------------------------------------------
/ Greenplum Database
/ Copyright (C) 2011 EMC Corp.
/
/ @filename:
/ CParseHandlerMDGPDBFunc.h
/
/ @doc:
/ SAX parse handler class for GPDB function metadata
/---------------------------------------------------------------------------
#ifndef GPDXL_CParseHandlerMDGPDBFunc_H
#define GPDXL_CParseHandlerMDGPDBFunc_H
#include "gpos/base.h"
#include "naucrates/dxl/parser/CParseHandlerMetadataObject.h"
#include "naucrates/md/CMDFunctionGPDB.h"
namespace gpdxl
{
using namespace gpos;
using namespace gpmd;
XERCES_CPP_NAMESPACE_USE
/---------------------------------------------------------------------------
/ @class:
/ CParseHandlerMDGPDBFunc
/
/ @doc:
/ Parse handler for GPDB function metadata
/
/---------------------------------------------------------------------------
class CParseHandlerMDGPDBFunc : public CParseHandlerMetadataObject
{
private:
/ id and version
IMDId *m_mdid;
/ name
CMDName *m_mdname;
/ result type
IMDId *m_mdid_type_result;
/ output argument types
IMdIdArray *m_mdid_types_array;
/ whether function returns a set of values
BOOL m_returns_set;
/ function stability
CMDFunctionGPDB::EFuncStbl m_func_stability;
/ function data access
CMDFunctionGPDB::EFuncDataAcc m_func_data_access;
/ function strictness (i.e. whether func returns NULL on NULL input)
BOOL m_is_strict;
BOOL m_is_ndv_preserving;
BOOL m_is_allowed_for_PS;
/ process the start of an element
void StartElement(
const XMLCh *const element_uri, / URI of element's namespace
const XMLCh *const element_local_name, / local part of element's name
const XMLCh *const element_qname, / element's qname
const Attributes &attr / element's attributes
) override;
/ process the end of an element
void EndElement(
const XMLCh *const element_uri, / URI of element's namespace
const XMLCh *const element_local_name, / local part of element's name
const XMLCh *const element_qname / element's qname
) override;
/ parse function stability property from XML string
static CMDFunctionGPDB::EFuncStbl ParseFuncStability(const XMLCh *xml_val);
/ parse function data access property from XML string
static CMDFunctionGPDB::EFuncDataAcc ParseFuncDataAccess(
const XMLCh *xml_val);
public:
CParseHandlerMDGPDBFunc(const CParseHandlerMDGPDBFunc &) = delete;
/ ctor
CParseHandlerMDGPDBFunc(CMemoryPool *mp,
CParseHandlerManager *parse_handler_mgr,
CParseHandlerBase *parse_handler_root);
};
} / namespace gpdxl
#endif / !GPDXL_CParseHandlerMDGPDBFunc_H
/ EOF
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