greenplumn CDXLPhysicalAssert 源码
greenplumn CDXLPhysicalAssert 代码
文件路径：/src/backend/gporca/libnaucrates/include/naucrates/dxl/operators/CDXLPhysicalAssert.h
//---------------------------------------------------------------------------
// Greenplum Database
// Copyright (C) 2012 EMC Corp.
//
// @filename:
// CDXLPhysicalAssert.h
//
// @doc:
// Class for representing DXL physical assert operators
//---------------------------------------------------------------------------
#ifndef GPDXL_CDXLPhysicalAssert_H
#define GPDXL_CDXLPhysicalAssert_H
#include "gpos/base.h"
#include "naucrates/dxl/errorcodes.h"
#include "naucrates/dxl/operators/CDXLPhysical.h"
namespace gpdxl
{
//---------------------------------------------------------------------------
// @class:
// CDXLPhysicalAssert
//
// @doc:
// Class for representing DXL assert operators
//
//---------------------------------------------------------------------------
class CDXLPhysicalAssert : public CDXLPhysical
{
public:
// indices of assert elements in the children array
enum Edxlassert
{
EdxlassertIndexProjList = 0,
EdxlassertIndexFilter,
EdxlassertIndexChild,
EdxlassertIndexSentinel
};
private:
// error code
CHAR m_sql_state[GPOS_SQLSTATE_LENGTH + 1];
public:
CDXLPhysicalAssert(CDXLPhysicalAssert &) = delete;
// ctor
CDXLPhysicalAssert(CMemoryPool *mp, const CHAR *sql_state);
// dtor
~CDXLPhysicalAssert() override;
// operator type
Edxlopid GetDXLOperator() const override;
// operator name
const CWStringConst *GetOpNameStr() const override;
// error code
const CHAR *
GetSQLState() const
{
return m_sql_state;
}
// 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 CDXLPhysicalAssert *
Cast(CDXLOperator *dxl_op)
{
GPOS_ASSERT(nullptr != dxl_op);
GPOS_ASSERT(EdxlopPhysicalAssert == dxl_op->GetDXLOperator());
return dynamic_cast<CDXLPhysicalAssert *>(dxl_op);
}
};
} // namespace gpdxl
#endif // !GPDXL_CDXLPhysicalAssert_H
// EOF
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