greenplumn CParseHandlerPartitionSelector 源码
greenplumn CParseHandlerPartitionSelector 代码
文件路径：/src/backend/gporca/libnaucrates/include/naucrates/dxl/parser/CParseHandlerPartitionSelector.h
//---------------------------------------------------------------------------
// Greenplum Database
// Copyright (C) 2014 VMware, Inc. or its affiliates.
//
// @filename:
// CParseHandlerPartitionSelector.h
//
// @doc:
// SAX parse handler class for parsing a partition selector
//---------------------------------------------------------------------------
#ifndef GPDXL_CParseHandlerScalarPartitionSelector_H
#define GPDXL_CParseHandlerScalarPartitionSelector_H
#include "gpos/base.h"
#include "naucrates/dxl/parser/CParseHandlerPhysicalOp.h"
namespace gpdxl
{
using namespace gpos;
XERCES_CPP_NAMESPACE_USE
//---------------------------------------------------------------------------
// @class:
// CParseHandlerPartitionSelector
//
// @doc:
// Parse handler class for parsing a partition selector
//
//---------------------------------------------------------------------------
class CParseHandlerPartitionSelector : public CParseHandlerPhysicalOp
{
private:
// table id
IMDId *m_rel_mdid;
// number of partitioning levels
ULONG m_selector_id;
// scan id
ULONG m_scan_id;
// partitions
ULongPtrArray *m_partitions;
// 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:
CParseHandlerPartitionSelector(const CParseHandlerPartitionSelector &) =
delete;
// ctor
CParseHandlerPartitionSelector(CMemoryPool *mp,
CParseHandlerManager *parse_handler_mgr,
CParseHandlerBase *parse_handler_root);
~CParseHandlerPartitionSelector() override;
};
} // namespace gpdxl
#endif // !GPDXL_CParseHandlerScalarPartitionSelector_H
// EOF
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