greenplumn CParseHandlerDirectDispatchInfo 源码
greenplumn CParseHandlerDirectDispatchInfo 代码
文件路径：/src/backend/gporca/libnaucrates/include/naucrates/dxl/parser/CParseHandlerDirectDispatchInfo.h
//---------------------------------------------------------------------------
// Greenplum Database
// Copyright (C) 2013 VMware, Inc. or its affiliates.
//
// @filename:
// CParseHandlerDirectDispatchInfo.h
//
// @doc:
// SAX parse handler class for parsing the direct dispatch info
//---------------------------------------------------------------------------
#ifndef GPDXL_CParseHandlerDirectDispatchInfo_H
#define GPDXL_CParseHandlerDirectDispatchInfo_H
#include "gpos/base.h"
#include "naucrates/dxl/parser/CParseHandlerBase.h"
namespace gpdxl
{
using namespace gpos;
XERCES_CPP_NAMESPACE_USE
// fwd decl
class CDXLDirectDispatchInfo;
//---------------------------------------------------------------------------
// @class:
// CParseHandlerDirectDispatchInfo
//
// @doc:
// Parse handler for direct dispatch info
//
//---------------------------------------------------------------------------
class CParseHandlerDirectDispatchInfo : public CParseHandlerBase
{
private:
// current array of datums being parsed
CDXLDatumArray *m_dxl_datum_array;
// array of datum combinations
CDXLDatum2dArray *m_datum_array_combination;
// direct dispatch spec
CDXLDirectDispatchInfo *m_direct_dispatch_info;
// true indicates m_dispatch_identifer_datum_array contains raw
// gp_segment_id values rather than hashable datums
BOOL m_dispatch_is_raw;
// 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:
CParseHandlerDirectDispatchInfo(const CParseHandlerDirectDispatchInfo &) =
delete;
// ctor
CParseHandlerDirectDispatchInfo(CMemoryPool *mp,
CParseHandlerManager *parse_handler_mgr,
CParseHandlerBase *parse_handler_root);
// dtor
~CParseHandlerDirectDispatchInfo() override;
// accessor to the parsed direct dispatch spec
CDXLDirectDispatchInfo *GetDXLDirectDispatchInfo() const;
};
} // namespace gpdxl
#endif // !GPDXL_CParseHandlerDirectDispatchInfo_H
// EOF
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