greenplumn CDXLScalarArrayCoerceExpr 代码
文件路径：/src/backend/gporca/libnaucrates/include/naucrates/dxl/operators/CDXLScalarArrayCoerceExpr.h
/---------------------------------------------------------------------------
/ Greenplum Database
/ Copyright (C) 2017 VMware, Inc. or its affiliates.
/
/ @filename:
/ CDXLScalarArrayCoerceExpr.h
/
/ @doc:
/ Class for representing DXL ArrayCoerceExpr operation,
/ the operator will apply type casting for each element in this array
/ using the given element coercion function.
/ @owner:
/
/ @test:
/
/---------------------------------------------------------------------------
#ifndef GPDXL_CDXLScalarArrayCoerceExpr_H
#define GPDXL_CDXLScalarArrayCoerceExpr_H
#include "gpos/base.h"
#include "naucrates/dxl/operators/CDXLScalarCoerceBase.h"
#include "naucrates/md/IMDId.h"
namespace gpdxl
{
using namespace gpos;
using namespace gpmd;
/---------------------------------------------------------------------------
/ @class:
/ CDXLScalarArrayCoerceExpr
/
/ @doc:
/ Class for representing DXL array coerce operator
/---------------------------------------------------------------------------
class CDXLScalarArrayCoerceExpr : public CDXLScalarCoerceBase
{
private:
/ catalog MDId of element coerce function
IMDId *m_coerce_func_mdid;
/ conversion semantics flag to pass to func
BOOL m_explicit;
public:
CDXLScalarArrayCoerceExpr(const CDXLScalarArrayCoerceExpr &) = delete;
CDXLScalarArrayCoerceExpr(CMemoryPool *mp, IMDId *coerce_func_mdid,
IMDId *result_type_mdid, INT type_modifier,
BOOL is_explicit, EdxlCoercionForm coerce_format,
INT location);
~CDXLScalarArrayCoerceExpr() override
{
m_coerce_func_mdid->Release();
}
/ ident accessor
Edxlopid
GetDXLOperator() const override
{
return EdxlopScalarArrayCoerceExpr;
}
/ return metadata id of element coerce function
IMDId *
GetCoerceFuncMDid() const
{
return m_coerce_func_mdid;
}
BOOL
IsExplicit() const
{
return m_explicit;
}
/ name of the DXL operator name
const CWStringConst *GetOpNameStr() const override;
/ serialize operator in DXL format
void SerializeToDXL(CXMLSerializer *xml_serializer,
const CDXLNode *dxlnode) const override;
/ conversion function
static CDXLScalarArrayCoerceExpr *
Cast(CDXLOperator *dxl_op)
{
GPOS_ASSERT(nullptr != dxl_op);
GPOS_ASSERT(EdxlopScalarArrayCoerceExpr == dxl_op->GetDXLOperator());
return dynamic_cast<CDXLScalarArrayCoerceExpr *>(dxl_op);
}
};
} / namespace gpdxl
#endif / !GPDXL_CDXLScalarArrayCoerceExpr_H
/ EOF
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