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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