greenplumn CParseHandlerSequence 代码
文件路径：/src/backend/gporca/libnaucrates/include/naucrates/dxl/parser/CParseHandlerSequence.h
/---------------------------------------------------------------------------
/ Greenplum Database
/ Copyright (C) 2012 EMC Corp.
/
/ @filename:
/ CParseHandlerSequence.h
/
/ @doc:
/ SAX parse handler class for parsing sequence operator nodes
/---------------------------------------------------------------------------
#ifndef GPDXL_CParseHandlerSequence_H
#define GPDXL_CParseHandlerSequence_H
#include "gpos/base.h"
#include "naucrates/dxl/parser/CParseHandlerPhysicalOp.h"
namespace gpdxl
{
using namespace gpos;
XERCES_CPP_NAMESPACE_USE
/ fwd decl
class CDXLPhysicalDynamicTableScan;
/---------------------------------------------------------------------------
/ @class:
/ CParseHandlerSequence
/
/ @doc:
/ Parse handler for parsing a sequence operator
/
/---------------------------------------------------------------------------
class CParseHandlerSequence : public CParseHandlerPhysicalOp
{
private:
/ are we already inside a sequence operator
BOOL m_is_inside_sequence;
/ 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:
CParseHandlerSequence(const CParseHandlerSequence &) = delete;
/ ctor
CParseHandlerSequence(CMemoryPool *mp,
CParseHandlerManager *parse_handler_mgr,
CParseHandlerBase *pph);
};
} / namespace gpdxl
#endif / !GPDXL_CParseHandlerSequence_H
/ EOF
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