greenplumn CQueryToDXLResult 源码
greenplumn CQueryToDXLResult 代码
文件路径：/src/backend/gporca/libnaucrates/src/base/CQueryToDXLResult.cpp
//---------------------------------------------------------------------------
// Greenplum Database
// Copyright (C) 2011 EMC Corp.
//
// @filename:
// CQueryToDXLResult.cpp
//
// @doc:
// Implementation of the methods for accessing the result of the translation
//---------------------------------------------------------------------------
#include "naucrates/base/CQueryToDXLResult.h"
using namespace gpdxl;
using namespace gpos;
//---------------------------------------------------------------------------
// @function:
// CQueryToDXLResult::CQueryToDXLResult
//
// @doc:
// Ctor
//
//---------------------------------------------------------------------------
CQueryToDXLResult::CQueryToDXLResult(CDXLNode *query,
CDXLNodeArray *query_output,
CDXLNodeArray *cte_producers)
: m_query_dxl(query),
m_query_output(query_output),
m_cte_producers(cte_producers)
{
GPOS_ASSERT(nullptr != query);
}
//---------------------------------------------------------------------------
// @function:
// CQueryToDXLResult::~CQueryToDXLResult
//
// @doc:
// Dtor
//
//---------------------------------------------------------------------------
CQueryToDXLResult::~CQueryToDXLResult()
{
m_query_dxl->Release();
CRefCount::SafeRelease(m_query_output);
CRefCount::SafeRelease(m_cte_producers);
}
//---------------------------------------------------------------------------
// @function:
// CQueryToDXLResult::GetOutputColumnsDXLArray
//
// @doc:
// Return the array of dxl nodes representing the query output
//
//---------------------------------------------------------------------------
const CDXLNodeArray *
CQueryToDXLResult::GetOutputColumnsDXLArray() const
{
return m_query_output;
}
//---------------------------------------------------------------------------
// @function:
// CQueryToDXLResult::GetCTEProducerDXLArray
//
// @doc:
// Return the array of CTEs
//
//---------------------------------------------------------------------------
const CDXLNodeArray *
CQueryToDXLResult::GetCTEProducerDXLArray() const
{
return m_cte_producers;
}
//---------------------------------------------------------------------------
// @function:
// CQueryToDXLResult::CreateDXLNode
//
// @doc:
// Return the DXL node representing the query
//
//---------------------------------------------------------------------------
const CDXLNode *
CQueryToDXLResult::CreateDXLNode() const
{
return m_query_dxl;
}
// EOF
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