greenplumn CDXLScalarBitmapBoolOp 源码
greenplumn CDXLScalarBitmapBoolOp 代码
文件路径：/src/backend/gporca/libnaucrates/include/naucrates/dxl/operators/CDXLScalarBitmapBoolOp.h
//---------------------------------------------------------------------------
// Greenplum Database
// Copyright (C) 2014 VMware, Inc. or its affiliates.
//
// @filename:
// CDXLScalarBitmapBoolOp.h
//
// @doc:
// Class for representing DXL bitmap boolean operator
//---------------------------------------------------------------------------
#ifndef GPDXL_CDXLScalarBitmapBoolOp_H
#define GPDXL_CDXLScalarBitmapBoolOp_H
#include "gpos/base.h"
#include "naucrates/dxl/operators/CDXLScalar.h"
namespace gpdxl
{
using namespace gpos;
//---------------------------------------------------------------------------
// @class:
// CDXLScalarBitmapBoolOp
//
// @doc:
// Class for representing DXL bitmap boolean operator
//
//---------------------------------------------------------------------------
class CDXLScalarBitmapBoolOp : public CDXLScalar
{
public:
// type of bitmap operator
enum EdxlBitmapBoolOp
{
EdxlbitmapAnd,
EdxlbitmapOr,
EdxlbitmapSentinel
};
private:
// type id
IMDId *m_mdid_type;
// operator type
const EdxlBitmapBoolOp m_bitmap_op_type;
public:
CDXLScalarBitmapBoolOp(const CDXLScalarBitmapBoolOp &) = delete;
// ctor
CDXLScalarBitmapBoolOp(CMemoryPool *mp, IMDId *mdid_type,
EdxlBitmapBoolOp bitmap_op_type);
// dtor
~CDXLScalarBitmapBoolOp() override;
// dxl operator type
Edxlopid GetDXLOperator() const override;
// bitmap operator type
EdxlBitmapBoolOp GetDXLBitmapOpType() const;
// return type
IMDId *MdidType() const;
// name of the DXL operator name
const CWStringConst *GetOpNameStr() const override;
// does the operator return a boolean result
BOOL HasBoolResult(CMDAccessor *md_accessor) const override;
// serialize operator in DXL format
void SerializeToDXL(CXMLSerializer *xml_serializer,
const CDXLNode *dxlnode) const override;
#ifdef GPOS_DEBUG
// checks whether the operator has valid structure, i.e. number and
// types of child nodes
void AssertValid(const CDXLNode *dxlnode,
BOOL validate_children) const override;
#endif // GPOS_DEBUG
// conversion function
static CDXLScalarBitmapBoolOp *
Cast(CDXLOperator *dxl_op)
{
GPOS_ASSERT(nullptr != dxl_op);
GPOS_ASSERT(EdxlopScalarBitmapBoolOp == dxl_op->GetDXLOperator());
return dynamic_cast<CDXLScalarBitmapBoolOp *>(dxl_op);
}
};
} // namespace gpdxl
#endif // !GPDXL_CDXLScalarBitmapBoolOp_H
// EOF
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