00001 /* 00002 * The Apache Software License, Version 1.1 00003 * 00004 * 00005 * Copyright (c) 1999 The Apache Software Foundation. All rights 00006 * reserved. 00007 * 00008 * Redistribution and use in source and binary forms, with or without 00009 * modification, are permitted provided that the following conditions 00010 * are met: 00011 * 00012 * 1. Redistributions of source code must retain the above copyright 00013 * notice, this list of conditions and the following disclaimer. 00014 * 00015 * 2. Redistributions in binary form must reproduce the above copyright 00016 * notice, this list of conditions and the following disclaimer in 00017 * the documentation and/or other materials provided with the 00018 * distribution. 00019 * 00020 * 3. The end-user documentation included with the redistribution, 00021 * if any, must include the following acknowledgment: 00022 * "This product includes software developed by the 00023 * Apache Software Foundation (http://www.apache.org/)." 00024 * Alternately, this acknowledgment may appear in the software itself, 00025 * if and wherever such third-party acknowledgments normally appear. 00026 * 00027 * 4. The names "Xalan" and "Apache Software Foundation" must 00028 * not be used to endorse or promote products derived from this 00029 * software without prior written permission. For written 00030 * permission, please contact apache@apache.org. 00031 * 00032 * 5. Products derived from this software may not be called "Apache", 00033 * nor may "Apache" appear in their name, without prior written 00034 * permission of the Apache Software Foundation. 00035 * 00036 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED 00037 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 00038 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 00039 * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR 00040 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 00041 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 00042 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 00043 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 00044 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 00045 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 00046 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 00047 * SUCH DAMAGE. 00048 * ==================================================================== 00049 * 00050 * This software consists of voluntary contributions made by many 00051 * individuals on behalf of the Apache Software Foundation and was 00052 * originally based on software copyright (c) 1999, International 00053 * Business Machines, Inc., http://www.ibm.com. For more 00054 * information on the Apache Software Foundation, please see 00055 * <http://www.apache.org/>. 00056 */ 00057 #if !defined(FUNCTIONCOUNT_HEADER_GUARD_1357924680) 00058 #define FUNCTIONCOUNT_HEADER_GUARD_1357924680 00059 00060 00061 00062 // Base header file. Must be first. 00063 #include <XPath/XPathDefinitions.hpp> 00064 00065 00066 00067 #include <vector> 00068 00069 00070 00071 // Base class header file... 00072 #include <XPath/Function.hpp> 00073 00074 00075 00076 #include <XPath/NodeRefListBase.hpp> 00077 #include <XPath/XObject.hpp> 00078 #include <XPath/XObjectFactory.hpp> 00079 #include <XPath/XPathExecutionContext.hpp> 00080 00081 00082 00086 // 00087 // These are all inline, even though 00088 // there are virtual functions, because we expect that they will only be 00089 // needed by the XPath class. 00090 class XALAN_XPATH_EXPORT FunctionCount : public Function 00091 { 00092 public: 00093 00094 // These methods are inherited from Function ... 00095 00096 virtual XObject* 00097 execute( 00098 XPathExecutionContext& executionContext, 00099 XalanNode* context, 00100 int /* opPos */, 00101 const XObjectArgVectorType& args) 00102 { 00103 if(args.size() != 1) 00104 { 00105 executionContext.error("The count() function takes one argument!", 00106 context); 00107 } 00108 00109 const NodeRefListBase& theNodeList = args[0]->nodeset(); 00110 00111 return executionContext.getXObjectFactory().createNumber(theNodeList.getLength()); 00112 } 00113 00114 #if defined(XALAN_NO_COVARIANT_RETURN_TYPE) 00115 virtual Function* 00116 #else 00117 virtual FunctionCount* 00118 #endif 00119 clone() const 00120 { 00121 return new FunctionCount(*this); 00122 } 00123 00124 private: 00125 00126 // Not implemented... 00127 FunctionCount& 00128 operator=(const FunctionCount&); 00129 00130 bool 00131 operator==(const FunctionCount&) const; 00132 }; 00133 00134 00135 00136 #endif // FUNCTIONCOUNT_HEADER_GUARD_1357924680
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