greenplumn CColRefTable 源码
greenplumn CColRefTable 代码
文件路径：/src/backend/gporca/libgpopt/src/base/CColRefTable.cpp
//---------------------------------------------------------------------------
// Greenplum Database
// Copyright (C) 2011 EMC Corp.
//
// @filename:
// CColRefTable.cpp
//
// @doc:
// Implementation of column reference class
//---------------------------------------------------------------------------
#include "gpopt/base/CColRefTable.h"
#include "gpos/base.h"
#include "naucrates/md/CMDIdGPDB.h"
using namespace gpopt;
using namespace gpmd;
//---------------------------------------------------------------------------
// @function:
// CColRefTable::CColRefTable
//
// @doc:
// Ctor
// takes ownership of string; verify string is properly formatted
//
//---------------------------------------------------------------------------
CColRefTable::CColRefTable(const CColumnDescriptor *pcoldesc, ULONG id,
const CName *pname, ULONG ulOpSource)
: CColRef(pcoldesc->RetrieveType(), pcoldesc->TypeModifier(), id, pname),
m_iAttno(0),
m_ulSourceOpId(ulOpSource),
m_width(pcoldesc->Width())
{
GPOS_ASSERT(nullptr != pname);
m_iAttno = pcoldesc->AttrNum();
m_is_nullable = pcoldesc->IsNullable();
m_is_dist_col = pcoldesc->IsDistCol();
}
//---------------------------------------------------------------------------
// @function:
// CColRefTable::CColRefTable
//
// @doc:
// Ctor
// takes ownership of string; verify string is properly formatted
//
//---------------------------------------------------------------------------
CColRefTable::CColRefTable(const IMDType *pmdtype, INT type_modifier, INT attno,
BOOL is_nullable, ULONG id, const CName *pname,
ULONG ulOpSource, BOOL is_dist_col, ULONG ulWidth)
: CColRef(pmdtype, type_modifier, id, pname),
m_iAttno(attno),
m_is_nullable(is_nullable),
m_ulSourceOpId(ulOpSource),
m_is_dist_col(is_dist_col),
m_width(ulWidth)
{
GPOS_ASSERT(nullptr != pname);
}
//---------------------------------------------------------------------------
// @function:
// CColRefTable::~CColRefTable
//
// @doc:
// Dtor
//
//---------------------------------------------------------------------------
CColRefTable::~CColRefTable() = default;
// EOF
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