greenplumn CDXLScalarArrayComp 代码
文件路径：/src/backend/gporca/libnaucrates/src/operators/CDXLScalarArrayComp.cpp
/---------------------------------------------------------------------------
/ Greenplum Database
/ Copyright (C) 2011 Greenplum, Inc.
/
/ @filename:
/ CDXLScalarArrayComp.cpp
/
/ @doc:
/ Implementation of DXL scalar array comparison
/---------------------------------------------------------------------------
#include "naucrates/dxl/operators/CDXLScalarArrayComp.h"
#include "naucrates/dxl/operators/CDXLNode.h"
#include "naucrates/dxl/xml/CXMLSerializer.h"
using namespace gpos;
using namespace gpdxl;
/---------------------------------------------------------------------------
/ @function:
/ CDXLScalarArrayComp::CDXLScalarArrayComp
/
/ @doc:
/ Constructs a ScalarArrayComp node
/
/---------------------------------------------------------------------------
CDXLScalarArrayComp::CDXLScalarArrayComp(CMemoryPool *mp, IMDId *mdid_op,
const CWStringConst *str_opname,
EdxlArrayCompType comparison_type)
: CDXLScalarComp(mp, mdid_op, str_opname),
m_comparison_type(comparison_type)
{
}
/---------------------------------------------------------------------------
/ @function:
/ CDXLScalarArrayComp::GetDXLOperator
/
/ @doc:
/ Operator type
/
/---------------------------------------------------------------------------
Edxlopid
CDXLScalarArrayComp::GetDXLOperator() const
{
return EdxlopScalarArrayComp;
}
/---------------------------------------------------------------------------
/ @function:
/ CDXLScalarArrayComp::GetDXLArrayCmpType
/
/ @doc:
/ Returns the array comparison operation type (ALL/ANY)
/
/---------------------------------------------------------------------------
EdxlArrayCompType
CDXLScalarArrayComp::GetDXLArrayCmpType() const
{
return m_comparison_type;
}
/---------------------------------------------------------------------------
/ @function:
/ CDXLScalarArrayComp::PstrArrayCompType
/
/ @doc:
/ AggRef AggStage
/
/---------------------------------------------------------------------------
const CWStringConst *
CDXLScalarArrayComp::GetDXLStrArrayCmpType() const
{
switch (m_comparison_type)
{
case Edxlarraycomptypeany:
return CDXLTokens::GetDXLTokenStr(EdxltokenOpTypeAny);
case Edxlarraycomptypeall:
return CDXLTokens::GetDXLTokenStr(EdxltokenOpTypeAll);
default:
GPOS_ASSERT(!"Unrecognized array operation type");
return nullptr;
}
}
/---------------------------------------------------------------------------
/ @function:
/ CDXLScalarArrayComp::GetOpNameStr
/
/ @doc:
/ Operator name
/
/---------------------------------------------------------------------------
const CWStringConst *
CDXLScalarArrayComp::GetOpNameStr() const
{
return CDXLTokens::GetDXLTokenStr(EdxltokenScalarArrayComp);
}
/---------------------------------------------------------------------------
/ @function:
/ CDXLScalarArrayComp::SerializeToDXL
/
/ @doc:
/ Serialize operator in DXL format
/
/---------------------------------------------------------------------------
void
CDXLScalarArrayComp::SerializeToDXL(CXMLSerializer *xml_serializer,
const CDXLNode *dxlnode) const
{
const CWStringConst *element_name = GetOpNameStr();
xml_serializer->OpenElement(
CDXLTokens::GetDXLTokenStr(EdxltokenNamespacePrefix), element_name);
xml_serializer->AddAttribute(CDXLTokens::GetDXLTokenStr(EdxltokenOpName),
m_comparison_operator_name);
m_mdid->Serialize(xml_serializer,
CDXLTokens::GetDXLTokenStr(EdxltokenOpNo));
xml_serializer->AddAttribute(CDXLTokens::GetDXLTokenStr(EdxltokenOpType),
GetDXLStrArrayCmpType());
dxlnode->SerializeChildrenToDXL(xml_serializer);
xml_serializer->CloseElement(
CDXLTokens::GetDXLTokenStr(EdxltokenNamespacePrefix), element_name);
}
#ifdef GPOS_DEBUG
/---------------------------------------------------------------------------
/ @function:
/ CDXLScalarArrayComp::AssertValid
/
/ @doc:
/ Checks whether operator node is well-structured
/
/---------------------------------------------------------------------------
void
CDXLScalarArrayComp::AssertValid(const CDXLNode *dxlnode,
BOOL validate_children) const
{
const ULONG arity = dxlnode->Arity();
GPOS_ASSERT(2 == arity);
for (ULONG ul = 0; ul < arity; ++ul)
{
CDXLNode *dxlnode_arg = (*dxlnode)[ul];
GPOS_ASSERT(EdxloptypeScalar ==
dxlnode_arg->GetOperator()->GetDXLOperatorType());
if (validate_children)
{
dxlnode_arg->GetOperator()->AssertValid(dxlnode_arg,
validate_children);
}
}
}
#endif / GPOS_DEBUG
/ EOF
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