greenplumn CParseHandlerIndexDescr 代码
文件路径：/src/backend/gporca/libnaucrates/include/naucrates/dxl/parser/CParseHandlerIndexDescr.h
/---------------------------------------------------------------------------
/ Greenplum Database
/ Copyright (C) 2012 EMC Corp.
/
/ @filename:
/ CParseHandlerIndexDescr.h
/
/ @doc:
/ SAX parse handler class for parsing the index descriptor portions
/ of index scan operator nodes
/---------------------------------------------------------------------------
#ifndef GPDXL_CParseHandlerIndexDescriptor_H
#define GPDXL_CParseHandlerIndexDescriptor_H
#include "gpos/base.h"
#include "naucrates/dxl/operators/CDXLIndexDescr.h"
#include "naucrates/dxl/parser/CParseHandlerBase.h"
namespace gpdxl
{
using namespace gpos;
XERCES_CPP_NAMESPACE_USE
/---------------------------------------------------------------------------
/ @class:
/ CParseHandlerIndexDescr
/
/ @doc:
/ Parse handler for parsing an index descriptor
/
/---------------------------------------------------------------------------
class CParseHandlerIndexDescr : public CParseHandlerBase
{
private:
/ the index descriptor to construct
CDXLIndexDescr *m_dxl_index_descr;
/ 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;
public:
CParseHandlerIndexDescr(const CParseHandlerIndexDescr &) = delete;
/ ctor
CParseHandlerIndexDescr(CMemoryPool *, CParseHandlerManager *,
CParseHandlerBase *);
/dtor
~CParseHandlerIndexDescr() override;
CDXLIndexDescr *GetDXLIndexDescr();
};
} / namespace gpdxl
#endif / !GPDXL_CParseHandlerIndexDescriptor_H
/ EOF
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