dom/impl/DOMXPathExpressionImpl.hpp

0001 /*
0002  * Licensed to the Apache Software Foundation (ASF) under one or more
0003  * contributor license agreements.  See the NOTICE file distributed with
0004  * this work for additional information regarding copyright ownership.
0005  * The ASF licenses this file to You under the Apache License, Version 2.0
0006  * (the "License"); you may not use this file except in compliance with
0007  * the License.  You may obtain a copy of the License at
0008  *
0009  *      http://www.apache.org/licenses/LICENSE-2.0
0010  *
0011  * Unless required by applicable law or agreed to in writing, software
0012  * distributed under the License is distributed on an "AS IS" BASIS,
0013  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
0014  * See the License for the specific language governing permissions and
0015  * limitations under the License.
0016  */
0017
0018 /*
0019  * $Id$
0020  */
0021
0022 #if !defined(XERCESC_INCLUDE_GUARD_DOMXPATHEXPRESSIONIMPL_HPP)
0023 #define XERCESC_INCLUDE_GUARD_DOMXPATHEXPRESSIONIMPL_HPP
0024
0025 #include <xercesc/util/XMemory.hpp>
0026 #include <xercesc/util/PlatformUtils.hpp>
0027 #include <xercesc/dom/DOMXPathExpression.hpp>
0028
0029 XERCES_CPP_NAMESPACE_BEGIN
0030
0031 class DOMElement;
0032 class XercesXPath;
0033 class XPathMatcher;
0034 class DOMXPathResultImpl;
0035 class DOMXPathNSResolver;
0036 class XMLStringPool;
0037
0038 class CDOM_EXPORT DOMXPathExpressionImpl :  public XMemory,
0039                                             public DOMXPathExpression
0040 {
0041 public:
0042     DOMXPathExpressionImpl(const XMLCh *expression,
0043                            const DOMXPathNSResolver *resolver,
0044                            MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager);
0045     virtual ~DOMXPathExpressionImpl();
0046
0047     virtual DOMXPathResult* evaluate(const DOMNode *contextNode,
0048                                      DOMXPathResult::ResultType type,
0049                                      DOMXPathResult* result) const;
0050
0051     virtual void release();
0052
0053 protected:
0054     bool testNode(XPathMatcher* matcher,
0055                   DOMXPathResultImpl* result,
0056                   DOMElement *node) const;
0057     void cleanUp();
0058
0059     XMLStringPool*              fStringPool;
0060     XercesXPath*                fParsedExpression;
0061     XMLCh*                      fExpression;
0062     bool                        fMoveToRoot;
0063
0064     MemoryManager* const        fMemoryManager;
0065 };
0066
0067 XERCES_CPP_NAMESPACE_END
0068
0069 #endif