greenplumn CScalarArrayRef 代码
文件路径：/src/backend/gporca/libgpopt/src/operators/CScalarArrayRef.cpp
/---------------------------------------------------------------------------
/ Greenplum Database
/ Copyright (C) 2014 VMware, Inc. or its affiliates.
/
/ @filename:
/ CScalarArrayRef.cpp
/
/ @doc:
/ Implementation of scalar arrayref
/---------------------------------------------------------------------------
#include "gpopt/operators/CScalarArrayRef.h"
#include "gpos/base.h"
using namespace gpopt;
using namespace gpmd;
/---------------------------------------------------------------------------
/ @function:
/ CScalarArrayRef::CScalarArrayRef
/
/ @doc:
/ Ctor
/
/---------------------------------------------------------------------------
CScalarArrayRef::CScalarArrayRef(CMemoryPool *mp, IMDId *elem_type_mdid,
INT type_modifier, IMDId *array_type_mdid,
IMDId *return_type_mdid)
: CScalar(mp),
m_pmdidElem(elem_type_mdid),
m_type_modifier(type_modifier),
m_pmdidArray(array_type_mdid),
m_mdid_type(return_type_mdid)
{
GPOS_ASSERT(elem_type_mdid->IsValid());
GPOS_ASSERT(array_type_mdid->IsValid());
GPOS_ASSERT(return_type_mdid->IsValid());
GPOS_ASSERT(return_type_mdid->Equals(elem_type_mdid) ||
return_type_mdid->Equals(array_type_mdid));
}
/---------------------------------------------------------------------------
/ @function:
/ CScalarArrayRef::~CScalarArrayRef
/
/ @doc:
/ Dtor
/
/---------------------------------------------------------------------------
CScalarArrayRef::~CScalarArrayRef()
{
m_pmdidElem->Release();
m_pmdidArray->Release();
m_mdid_type->Release();
}
INT
CScalarArrayRef::TypeModifier() const
{
return m_type_modifier;
}
/---------------------------------------------------------------------------
/ @function:
/ CScalarArrayRef::HashValue
/
/ @doc:
/ Operator specific hash function
/
/---------------------------------------------------------------------------
ULONG
CScalarArrayRef::HashValue() const
{
return gpos::CombineHashes(
CombineHashes(m_pmdidElem->HashValue(), m_pmdidArray->HashValue()),
m_mdid_type->HashValue());
}
/---------------------------------------------------------------------------
/ @function:
/ CScalarArrayRef::Matches
/
/ @doc:
/ Match function on operator level
/
/---------------------------------------------------------------------------
BOOL
CScalarArrayRef::Matches(COperator *pop) const
{
if (pop->Eopid() != Eopid())
{
return false;
}
CScalarArrayRef *popArrayRef = CScalarArrayRef::PopConvert(pop);
return m_mdid_type->Equals(popArrayRef->MdidType()) &&
m_pmdidElem->Equals(popArrayRef->PmdidElem()) &&
m_pmdidArray->Equals(popArrayRef->PmdidArray());
}
/ EOF
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