greenplumn CParseHandlerMetadataIdList 源码
greenplumn CParseHandlerMetadataIdList 代码
文件路径：/src/backend/gporca/libnaucrates/include/naucrates/dxl/parser/CParseHandlerMetadataIdList.h
//---------------------------------------------------------------------------
// Greenplum Database
// Copyright (C) 2011 Greenplum, Inc.
//
// @filename:
// CParseHandlerMetadataIdList.h
//
// @doc:
// SAX parse handler class for parsing a list of metadata identifiers
//---------------------------------------------------------------------------
#ifndef GPDXL_CParseHandlerMetadataIdList_H
#define GPDXL_CParseHandlerMetadataIdList_H
#include "gpos/base.h"
#include "naucrates/dxl/parser/CParseHandlerBase.h"
#include "naucrates/md/IMDId.h"
namespace gpdxl
{
using namespace gpos;
using namespace gpmd;
XERCES_CPP_NAMESPACE_USE
//---------------------------------------------------------------------------
// @class:
// CParseHandlerMetadataIdList
//
// @doc:
// SAX parse handler class for parsing a list of metadata identifiers
//
//---------------------------------------------------------------------------
class CParseHandlerMetadataIdList : public CParseHandlerBase
{
private:
// list of metadata identifiers
IMdIdArray *m_mdid_array;
// 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;
// is this a supported element of a metadata list
static BOOL FSupportedElem(const XMLCh *const xml_str);
// is this a supported metadata list type
static BOOL FSupportedListType(const XMLCh *const xml_str);
public:
CParseHandlerMetadataIdList(const CParseHandlerMetadataIdList &) = delete;
// ctor/dtor
CParseHandlerMetadataIdList(CMemoryPool *mp,
CParseHandlerManager *parse_handler_mgr,
CParseHandlerBase *parse_handler_root);
~CParseHandlerMetadataIdList() override;
// return the constructed list of metadata identifiers
IMdIdArray *GetMdIdArray();
};
} // namespace gpdxl
#endif // !GPDXL_CParseHandlerMetadataIdList_H
// EOF
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