greenplumn CParseHandlerScalarBooleanTest 源码
greenplumn CParseHandlerScalarBooleanTest 代码
文件路径：/src/backend/gporca/libnaucrates/include/naucrates/dxl/parser/CParseHandlerScalarBooleanTest.h
//---------------------------------------------------------------------------
// Greenplum Database
// Copyright (C) 2011 Greenplum, Inc.
//
// @filename:
// CParseHandlerScalarBooleanTest.h
//
// @doc:
//
// SAX parse handler class for parsing scalar BooleanTest.
//---------------------------------------------------------------------------
#ifndef GPDXL_CParseHandlerScalarBooleanTest_H
#define GPDXL_CParseHandlerScalarBooleanTest_H
#include "gpos/base.h"
#include "naucrates/dxl/operators/CDXLScalarBooleanTest.h"
#include "naucrates/dxl/parser/CParseHandlerScalarOp.h"
namespace gpdxl
{
using namespace gpos;
XERCES_CPP_NAMESPACE_USE
//---------------------------------------------------------------------------
// @class:
// CParseHandlerScalarBooleanTest
//
// @doc:
// Parse handler for parsing a scalar boolean test
//
//---------------------------------------------------------------------------
class CParseHandlerScalarBooleanTest : public CParseHandlerScalarOp
{
private:
EdxlBooleanTestType m_dxl_boolean_test_type;
// process the start of an element
void StartElement(
const XMLCh *const element_uri, // URI of element's namespace
const XMLCh *const element_local_name, // local part of element's name
const XMLCh *const element_qname, // element's qname
const Attributes &attr // element's attributes
) override;
// process the end of an element
void EndElement(
const XMLCh *const element_uri, // URI of element's namespace
const XMLCh *const element_local_name, // local part of element's name
const XMLCh *const element_qname // element's qname
) override;
// parse the boolean test type from the Xerces xml string
static EdxlBooleanTestType GetDxlBooleanTestType(
const XMLCh *xmlszBoolType);
public:
CParseHandlerScalarBooleanTest(const CParseHandlerScalarBooleanTest &) =
delete;
// ctor
CParseHandlerScalarBooleanTest(CMemoryPool *mp,
CParseHandlerManager *parse_handler_mgr,
CParseHandlerBase *parse_handler_root);
};
} // namespace gpdxl
#endif // GPDXL_CParseHandlerScalarBooleanTest_H
//EOF
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