greenplumn CParseHandlerScalarArrayRef 源码
greenplumn CParseHandlerScalarArrayRef 代码
文件路径：/src/backend/gporca/libnaucrates/include/naucrates/dxl/parser/CParseHandlerScalarArrayRef.h
//---------------------------------------------------------------------------
// Greenplum Database
// Copyright (C) 2014 VMware, Inc. or its affiliates.
//
// @filename:
// CParseHandlerScalarArrayRef.h
//
// @doc:
// SAX parse handler class for parsing scalar arrayref
//---------------------------------------------------------------------------
#ifndef GPDXL_CParseHandlerScalarScalarArrayRef_H
#define GPDXL_CParseHandlerScalarScalarArrayRef_H
#include "gpos/base.h"
#include "naucrates/dxl/parser/CParseHandlerScalarOp.h"
namespace gpdxl
{
using namespace gpos;
XERCES_CPP_NAMESPACE_USE
//---------------------------------------------------------------------------
// @class:
// CParseHandlerScalarArrayRef
//
// @doc:
// Parse handler class for parsing scalar arrayref
//
//---------------------------------------------------------------------------
class CParseHandlerScalarArrayRef : public CParseHandlerScalarOp
{
private:
// number of index lists parsed
ULONG m_parse_index_lists;
// whether the parser is currently parsing the ref expr
BOOL m_parsing_ref_expr;
// whether the parser is currently parsing the assign expr
BOOL m_parsing_assign_expr;
// 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;
public:
CParseHandlerScalarArrayRef(const CParseHandlerScalarArrayRef &) = delete;
// ctor
CParseHandlerScalarArrayRef(CMemoryPool *mp,
CParseHandlerManager *parse_handler_mgr,
CParseHandlerBase *parse_handler_root);
};
} // namespace gpdxl
#endif // !GPDXL_CParseHandlerScalarScalarArrayRef_H
// EOF
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