| /* |
| * The Apache Software License, Version 1.1 |
| * |
| * |
| * Copyright (c) 2001 The Apache Software Foundation. All rights |
| * reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * 3. The end-user documentation included with the redistribution, |
| * if any, must include the following acknowledgment: |
| * "This product includes software developed by the |
| * Apache Software Foundation (http://www.apache.org/)." |
| * Alternately, this acknowledgment may appear in the software itself, |
| * if and wherever such third-party acknowledgments normally appear. |
| * |
| * 4. The names "Xalan" and "Apache Software Foundation" must |
| * not be used to endorse or promote products derived from this |
| * software without prior written permission. For written |
| * permission, please contact apache@apache.org. |
| * |
| * 5. Products derived from this software may not be called "Apache", |
| * nor may "Apache" appear in their name, without prior written |
| * permission of the Apache Software Foundation. |
| * |
| * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR |
| * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
| * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * ==================================================================== |
| * |
| * This software consists of voluntary contributions made by many |
| * individuals on behalf of the Apache Software Foundation and was |
| * originally based on software copyright (c) 1999, International |
| * Business Machines, Inc., http://www.ibm.com. For more |
| * information on the Apache Software Foundation, please see |
| * <http://www.apache.org/>. |
| */ |
| |
| #include "XPathEvaluator.hpp" |
| |
| |
| |
| #include <DOMSupport/DOMSupportDefault.hpp> |
| |
| |
| |
| #include <XPath/ElementPrefixResolverProxy.hpp> |
| #include <XPath/XObjectFactoryDefault.hpp> |
| #include <XPath/XPathEnvSupportDefault.hpp> |
| #include <XPath/XPathExecutionContextDefault.hpp> |
| #include <XPath/XPathFactoryDefault.hpp> |
| #include <XPath/XPathProcessorImpl.hpp> |
| #include <XPath/XPathInit.hpp> |
| |
| |
| |
| static XPathInit* theXPathInit = 0; |
| |
| |
| |
| void |
| XPathEvaluator::initialize() |
| { |
| theXPathInit = new XPathInit; |
| } |
| |
| |
| |
| void |
| XPathEvaluator::terminate() |
| { |
| delete theXPathInit; |
| |
| theXPathInit = 0; |
| } |
| |
| |
| |
| XPathEvaluator::XPathEvaluator() : |
| m_xobjectFactory(new XObjectFactoryDefault), |
| m_xpathFactory(new XPathFactoryDefault), |
| m_executionContext(new XPathExecutionContextDefault) |
| |
| { |
| } |
| |
| |
| |
| XPathEvaluator::~XPathEvaluator() |
| { |
| // Just in case these are still set, reset them |
| // to 0. |
| m_executionContext->setXPathEnvSupport(0); |
| |
| m_executionContext->setXObjectFactory(0); |
| |
| m_executionContext->setDOMSupport(0); |
| } |
| |
| |
| |
| XalanNode* |
| XPathEvaluator::selectSingleNode( |
| DOMSupport& domSupport, |
| XalanNode* contextNode, |
| const XalanDOMChar* xpathString, |
| const XalanElement* namespaceNode) |
| { |
| const XObjectPtr theResult( |
| evaluate( |
| domSupport, |
| contextNode, |
| xpathString, |
| namespaceNode)); |
| |
| const NodeRefListBase& theNodeList = theResult->nodeset(); |
| |
| return theNodeList.getLength() == 0 ? 0 : theNodeList.item(0); |
| } |
| |
| |
| |
| XalanNode* |
| XPathEvaluator::selectSingleNode( |
| DOMSupport& domSupport, |
| XalanNode* contextNode, |
| const XalanDOMChar* xpathString, |
| const PrefixResolver& prefixResolver) |
| { |
| const XObjectPtr theResult( |
| evaluate( |
| domSupport, |
| contextNode, |
| xpathString, |
| prefixResolver)); |
| |
| const NodeRefListBase& theNodeList = theResult->nodeset(); |
| |
| return theNodeList.getLength() == 0 ? 0 : theNodeList.item(0); |
| } |
| |
| |
| |
| XalanNode* |
| XPathEvaluator::selectSingleNode( |
| DOMSupport& domSupport, |
| XalanNode* contextNode, |
| const XPath& xpath, |
| const XalanElement* namespaceNode) |
| { |
| const XObjectPtr theResult( |
| evaluate( |
| domSupport, |
| contextNode, |
| xpath, |
| namespaceNode)); |
| |
| const NodeRefListBase& theNodeList = theResult->nodeset(); |
| |
| return theNodeList.getLength() == 0 ? 0 : theNodeList.item(0); |
| } |
| |
| |
| |
| XalanNode* |
| XPathEvaluator::selectSingleNode( |
| DOMSupport& domSupport, |
| XalanNode* contextNode, |
| const XPath& xpath, |
| const PrefixResolver& prefixResolver) |
| { |
| const XObjectPtr theResult( |
| evaluate( |
| domSupport, |
| contextNode, |
| xpath, |
| prefixResolver)); |
| |
| const NodeRefListBase& theNodeList = theResult->nodeset(); |
| |
| return theNodeList.getLength() == 0 ? 0 : theNodeList.item(0); |
| } |
| |
| |
| |
| NodeRefList |
| XPathEvaluator::selectNodeList( |
| DOMSupport& domSupport, |
| XalanNode* contextNode, |
| const XalanDOMChar* xpathString, |
| const XalanElement* namespaceNode) |
| { |
| const XObjectPtr theResult( |
| evaluate( |
| domSupport, |
| contextNode, |
| xpathString, |
| namespaceNode)); |
| |
| return NodeRefList(theResult->nodeset()); |
| } |
| |
| |
| |
| NodeRefList |
| XPathEvaluator::selectNodeList( |
| DOMSupport& domSupport, |
| XalanNode* contextNode, |
| const XalanDOMChar* xpathString, |
| const PrefixResolver& prefixResolver) |
| { |
| const XObjectPtr theResult( |
| evaluate( |
| domSupport, |
| contextNode, |
| xpathString, |
| prefixResolver)); |
| |
| return NodeRefList(theResult->nodeset()); |
| } |
| |
| |
| |
| NodeRefList |
| XPathEvaluator::selectNodeList( |
| DOMSupport& domSupport, |
| XalanNode* contextNode, |
| const XPath& xpath, |
| const XalanElement* namespaceNode) |
| { |
| const XObjectPtr theResult( |
| evaluate( |
| domSupport, |
| contextNode, |
| xpath, |
| namespaceNode)); |
| |
| return NodeRefList(theResult->nodeset()); |
| } |
| |
| |
| |
| NodeRefList |
| XPathEvaluator::selectNodeList( |
| DOMSupport& domSupport, |
| XalanNode* contextNode, |
| const XPath& xpath, |
| const PrefixResolver& prefixResolver) |
| { |
| const XObjectPtr theResult( |
| evaluate( |
| domSupport, |
| contextNode, |
| xpath, |
| prefixResolver)); |
| |
| return NodeRefList(theResult->nodeset()); |
| } |
| |
| |
| |
| XObjectPtr |
| XPathEvaluator::evaluate( |
| DOMSupport& domSupport, |
| XalanNode* contextNode, |
| const XalanDOMChar* xpathString, |
| const XalanElement* namespaceNode) |
| { |
| XPathEnvSupportDefault theEnvSupportDefault; |
| |
| return evaluate( |
| domSupport, |
| contextNode, |
| xpathString, |
| ElementPrefixResolverProxy(namespaceNode, theEnvSupportDefault, domSupport), |
| theEnvSupportDefault); |
| } |
| |
| |
| |
| XObjectPtr |
| XPathEvaluator::evaluate( |
| DOMSupport& domSupport, |
| XalanNode* contextNode, |
| const XPath& xpath, |
| const XalanElement* namespaceNode) |
| { |
| XPathEnvSupportDefault theEnvSupportDefault; |
| |
| return evaluate( |
| domSupport, |
| contextNode, |
| xpath, |
| ElementPrefixResolverProxy(namespaceNode, theEnvSupportDefault, domSupport), |
| theEnvSupportDefault); |
| } |
| |
| |
| |
| XObjectPtr |
| XPathEvaluator::evaluate( |
| DOMSupport& domSupport, |
| XalanNode* contextNode, |
| const XalanDOMChar* xpathString, |
| const PrefixResolver& prefixResolver) |
| { |
| XPathEnvSupportDefault theEnvSupportDefault; |
| |
| return evaluate( |
| domSupport, |
| contextNode, |
| xpathString, |
| prefixResolver, |
| theEnvSupportDefault); |
| } |
| |
| |
| |
| XObjectPtr |
| XPathEvaluator::evaluate( |
| DOMSupport& domSupport, |
| XalanNode* contextNode, |
| const XPath& xpath, |
| const PrefixResolver& prefixResolver) |
| { |
| XPathEnvSupportDefault theEnvSupportDefault; |
| |
| return evaluate( |
| domSupport, |
| contextNode, |
| xpath, |
| prefixResolver, |
| theEnvSupportDefault); |
| } |
| |
| |
| |
| XPath* |
| XPathEvaluator::createXPath(const XalanDOMChar* xpathString) |
| { |
| DOMSupportDefault theDOMSupport; |
| XPathEnvSupportDefault theEnvSupportDefault; |
| |
| return createXPath(xpathString, ElementPrefixResolverProxy(0, theEnvSupportDefault, theDOMSupport)); |
| } |
| |
| |
| |
| XPath* |
| XPathEvaluator::createXPath( |
| const XalanDOMChar* xpathString, |
| DOMSupport& domSupport, |
| const XalanElement* namespaceNode) |
| { |
| XPathEnvSupportDefault theEnvSupportDefault; |
| |
| return createXPath(xpathString, ElementPrefixResolverProxy(namespaceNode, theEnvSupportDefault, domSupport)); |
| } |
| |
| |
| |
| XPath* |
| XPathEvaluator::createXPath( |
| const XalanDOMChar* xpathString, |
| const PrefixResolver& prefixResolver) |
| { |
| XPath* const theXPath = m_xpathFactory->create(); |
| assert(theXPath != 0); |
| |
| XPathProcessorImpl theProcessor; |
| |
| theProcessor.initXPath( |
| *theXPath, |
| XalanDOMString(xpathString), |
| prefixResolver); |
| |
| return theXPath; |
| } |
| |
| |
| |
| bool |
| XPathEvaluator::destroyXPath(XPath* theXPath) |
| { |
| assert(theXPath != 0); |
| |
| return m_xpathFactory->returnObject(theXPath); |
| } |
| |
| |
| |
| XObjectPtr |
| XPathEvaluator::evaluate( |
| DOMSupport& domSupport, |
| XalanNode* contextNode, |
| const XalanDOMChar* xpathString, |
| const PrefixResolver& prefixResolver, |
| XPathEnvSupport& envSupport) |
| { |
| assert(contextNode != 0); |
| assert(xpathString != 0); |
| |
| // Create an XPath, and an XPathProcessorImpl to process |
| // the XPath. |
| XPath theXPath; |
| |
| XPathProcessorImpl theProcessor; |
| |
| theProcessor.initXPath( |
| theXPath, |
| XalanDOMString(xpathString), |
| prefixResolver); |
| |
| return evaluate(domSupport, contextNode, theXPath, prefixResolver, envSupport); |
| } |
| |
| |
| |
| XObjectPtr |
| XPathEvaluator::evaluate( |
| DOMSupport& domSupport, |
| XalanNode* contextNode, |
| const XPath& xpath, |
| const PrefixResolver& prefixResolver, |
| XPathEnvSupport& envSupport) |
| { |
| // Reset these, in case we've been here before... |
| m_executionContext->reset(); |
| m_xobjectFactory->reset(); |
| |
| // Set up the connections between the execution context and |
| // the provided support objects... |
| m_executionContext->setXPathEnvSupport(&envSupport); |
| |
| m_executionContext->setXObjectFactory(m_xobjectFactory.get()); |
| |
| m_executionContext->setDOMSupport(&domSupport); |
| |
| // OK, evaluate the expression... |
| const XObjectPtr theResult( |
| xpath.execute( |
| contextNode, |
| prefixResolver, |
| *m_executionContext.get())); |
| |
| // Break the connectons we set... |
| m_executionContext->setXPathEnvSupport(0); |
| |
| m_executionContext->setXObjectFactory(0); |
| |
| m_executionContext->setDOMSupport(0); |
| |
| return theResult; |
| } |
