90 lines
2.8 KiB
C++
90 lines
2.8 KiB
C++
/*
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* Copyright (c) 2001-2008
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* DecisionSoft Limited. All rights reserved.
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* Copyright (c) 2004-2008
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* Oracle. All rights reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* $Id: VarStoreImpl.hpp 626 2008-08-26 20:26:44Z jpcs $
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*/
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#ifndef _VARSTOREIMPL_HPP
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#define _VARSTOREIMPL_HPP
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#include <xqilla/context/VariableStore.hpp>
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#include <xqilla/runtime/Sequence.hpp>
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#include <xqilla/runtime/ResultBuffer.hpp>
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#include <xercesc/util/StringPool.hpp>
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#include <xercesc/util/RefHash2KeysTableOf.hpp>
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class DynamicContext;
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class StaticAnalysis;
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/** Default implementation of VariableStore that stores variable values in a hash map, and
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proxies calls to a parent VariableStore if the value is not found in it's map. */
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class XQILLA_API VarStoreImpl : public VariableStore
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{
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public:
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VarStoreImpl(XPath2MemoryManager *mm, const VariableStore *parent = 0);
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VarStoreImpl(const VarStoreImpl &other, XPath2MemoryManager *mm);
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~VarStoreImpl();
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virtual Result getVar(const XMLCh *namespaceURI, const XMLCh *name) const;
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virtual void getInScopeVariables(std::vector<std::pair<const XMLCh*, const XMLCh*> > &variables) const;
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void setVar(const XMLCh *namespaceURI, const XMLCh *name, const Result &value, unsigned int readCount = ResultBufferImpl::UNLIMITED_COUNT);
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void clear();
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void cacheVariableStore(const StaticAnalysis &src, const VariableStore *toCache);
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private:
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class VarEntry {
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public:
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VarEntry(const XMLCh *uri, const XMLCh *name, const Result &result, unsigned int readCount, VarEntry *prev);
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VarEntry(const XMLCh *uri, const XMLCh *name, const ResultBuffer &buffer, VarEntry *prev);
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const XMLCh *uri, *name;
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ResultBuffer buffer;
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VarEntry *prev;
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};
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VarEntry *store_;
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const VariableStore *parent_;
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XPath2MemoryManager *mm_;
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};
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class XQILLA_API SingleVarStore : public VariableStore
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{
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public:
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SingleVarStore();
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virtual Result getVar(const XMLCh *namespaceURI, const XMLCh *name) const;
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virtual void getInScopeVariables(std::vector<std::pair<const XMLCh*, const XMLCh*> > &variables) const;
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void setAsVariableStore(const XMLCh *namespaceURI, const XMLCh *name, DynamicContext *context);
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void unsetAsVariableStore(DynamicContext *context);
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Sequence value;
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private:
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const XMLCh *uri_, *name_;
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const VariableStore *parent_;
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};
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#endif
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