mirror of
https://github.com/FirebirdSQL/firebird.git
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134 lines
2.8 KiB
C++
134 lines
2.8 KiB
C++
/*
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* PROGRAM: JRD Access Method
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* MODULE: flu.h
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* DESCRIPTION: Function lookup definitions
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*
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* The contents of this file are subject to the Interbase Public
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* License Version 1.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy
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* of the License at http://www.Inprise.com/IPL.html
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*
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* Software distributed under the License is distributed on an
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* "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express
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* or implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code was created by Inprise Corporation
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* and its predecessors. Portions created by Inprise Corporation are
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* Copyright (C) Inprise Corporation.
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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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* 2002.10.28 Sean Leyne - Completed removal of obsolete "HP700" port
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*
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*/
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#ifndef JRD_FLU_H
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#define JRD_FLU_H
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// External modules for UDFs/BLOB filters/y-valve loader
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#include "../common/classes/objects_array.h"
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#include "../common/os/mod_loader.h"
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#include "../common/classes/RefCounted.h"
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namespace Jrd
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{
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class Database;
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class Module
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{
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private:
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class InternalModule : public Firebird::RefCounted
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{
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private:
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InternalModule(const InternalModule &im);
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void operator=(const InternalModule &im);
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public:
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ModuleLoader::Module* handle;
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Firebird::PathName originalName, loadName;
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void* findSymbol(const Firebird::string& name)
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{
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if (! handle)
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{
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return 0;
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}
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return handle->findSymbol(name);
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}
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InternalModule(MemoryPool& p,
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ModuleLoader::Module* h,
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const Firebird::PathName& on,
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const Firebird::PathName& ln)
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: handle(h),
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originalName(p, on),
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loadName(p, ln)
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{ }
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~InternalModule();
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bool operator==(const Firebird::PathName &pn) const
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{
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return originalName == pn || loadName == pn;
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}
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};
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Firebird::RefPtr<InternalModule> interMod;
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explicit Module(InternalModule* h)
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: interMod(h)
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{ }
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static Module lookupModule(const char*);
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static InternalModule* scanModule(const Firebird::PathName& name);
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public:
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typedef Firebird::Array<InternalModule*> LoadedModules;
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Module() : interMod(0) { }
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explicit Module(MemoryPool&)
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: interMod(NULL)
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{ }
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Module(MemoryPool&, const Module& m)
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: interMod(m.interMod)
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{ }
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Module(const Module& m)
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: interMod(m.interMod)
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{ }
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~Module();
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// used for UDF/BLOB Filter
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static FPTR_INT lookup(const char*, const char*, Database*);
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bool operator>(const Module &im) const;
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void *lookupSymbol(const Firebird::string& name)
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{
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if (! interMod)
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{
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return 0;
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}
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return interMod->findSymbol(name);
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}
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operator bool() const
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{
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return interMod;
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}
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};
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typedef Firebird::SortedObjectsArray<Module> DatabaseModules;
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} // namespace Jrd
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#endif // JRD_FLU_H
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