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cb6fee68eb
Keep metadata name strings in hash table having just a pointer to a hash table member in all places where metadata name is needed in order to save RAM. Hash table of metadata names is almost lock-less: mutex is used only when new segment of memory is needed or hash table should be grown. Co-authored-by: hvlad <hvlad@users.sourceforge.net>
114 lines
2.5 KiB
C++
114 lines
2.5 KiB
C++
/*
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* PROGRAM: Client/Server Common Code
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* MODULE: QualifiedName.h
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* DESCRIPTION: Qualified metadata name holder.
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*
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* The contents of this file are subject to the Initial
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* Developer's Public License Version 1.0 (the "License");
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* you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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* http://www.ibphoenix.com/main.nfs?a=ibphoenix&page=ibp_idpl.
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*
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* Software distributed under the License is distributed AS IS,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied.
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* See the License for the specific language governing rights
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* and limitations under the License.
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*
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* The Original Code was created by Adriano dos Santos Fernandes
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* for the Firebird Open Source RDBMS project.
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*
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* Copyright (c) 2009 Adriano dos Santos Fernandes <adrianosf@uol.com.br>
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* and all contributors signed below.
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*
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* All Rights Reserved.
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* Contributor(s): ______________________________________.
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*/
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#ifndef JRD_QUALIFIEDNAME_H
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#define JRD_QUALIFIEDNAME_H
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#include "MetaName.h"
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#include "../common/classes/array.h"
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namespace Jrd {
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class QualifiedName
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{
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public:
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QualifiedName(MemoryPool& p, const MetaName& aIdentifier, const MetaName& aPackage)
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: identifier(p, aIdentifier),
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package(p, aPackage)
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{
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}
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QualifiedName(const MetaName& aIdentifier, const MetaName& aPackage)
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: identifier(aIdentifier),
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package(aPackage)
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{
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}
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QualifiedName(MemoryPool& p, const MetaName& aIdentifier)
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: identifier(p, aIdentifier),
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package(p)
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{
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}
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explicit QualifiedName(const MetaName& aIdentifier)
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: identifier(aIdentifier)
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{
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}
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explicit QualifiedName(MemoryPool& p)
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: identifier(p),
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package(p)
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{
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}
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QualifiedName()
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{
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}
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QualifiedName(MemoryPool& p, const QualifiedName& src)
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: identifier(p, src.identifier),
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package(p, src.package)
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{
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}
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public:
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bool operator >(const QualifiedName& m) const
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{
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return package > m.package || (package == m.package && identifier > m.identifier);
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}
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bool operator ==(const QualifiedName& m) const
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{
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return identifier == m.identifier && package == m.package;
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}
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bool operator !=(const QualifiedName& m) const
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{
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return !(identifier == m.identifier && package == m.package);
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}
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public:
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Firebird::string toString() const
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{
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Firebird::string s;
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if (package.hasData())
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{
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s = package.c_str();
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s.append(".");
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}
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s.append(identifier.c_str());
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return s;
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}
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public:
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MetaName identifier;
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MetaName package;
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};
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} // namespace Jrd
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#endif // JRD_QUALIFIEDNAME_H
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