greenplumn CParseHandlerNLJIndexParamList 源码
greenplumn CParseHandlerNLJIndexParamList 代码
文件路径：/src/backend/gporca/libnaucrates/include/naucrates/dxl/parser/CParseHandlerNLJIndexParamList.h
//---------------------------------------------------------------------------
// Greenplum Database
// Copyright (C) 2018 VMware, Inc. or its affiliates.
//
// @filename:
// CParseHandlerNLJIndexParamList.h
//
// @doc:
//
// SAX parse handler class for parsing NLJ ParamList
//---------------------------------------------------------------------------
#ifndef GPDXL_CParseHandlerNLJIndexParamList_H
#define GPDXL_CParseHandlerNLJIndexParamList_H
#include "gpos/base.h"
#include "naucrates/dxl/operators/CDXLColRef.h"
#include "naucrates/dxl/parser/CParseHandlerScalarOp.h"
namespace gpdxl
{
using namespace gpos;
XERCES_CPP_NAMESPACE_USE
//---------------------------------------------------------------------------
// @class:
// CParseHandlerNLJIndexParamList
//
// @doc:
// Parse handler for parsing a scalar NLJ ParamList
//
//---------------------------------------------------------------------------
class CParseHandlerNLJIndexParamList : public CParseHandlerBase
{
private:
BOOL m_is_param_list;
// array of outer column references
CDXLColRefArray *m_nest_params_colrefs_array;
// 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:
CParseHandlerNLJIndexParamList(const CParseHandlerNLJIndexParamList &) =
delete;
// ctor
CParseHandlerNLJIndexParamList(CMemoryPool *mp,
CParseHandlerManager *parse_handler_mgr,
CParseHandlerBase *parse_handler_root);
// dtor
~CParseHandlerNLJIndexParamList() override;
// return param column references
CDXLColRefArray *
GetNLParamsColRefs() const
{
return m_nest_params_colrefs_array;
}
};
} // namespace gpdxl
#endif // GPDXL_CParseHandlerNLJIndexParamList_H
//EOF
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