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ExtensionFunctionHandler.hpp

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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
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00046  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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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  * $ Id: $
00058  *
00059  */
00060 
00061 #if !defined(XALAN_EXTENSIONFUNCTIONHANDLER_HEADER_GUARD)
00062 #define XALAN_EXTENSIONFUNCTIONHANDLER_HEADER_GUARD
00063 
00064 
00065 
00066 // Base include file.   Must be first.
00067 #include <XSLT/XSLTDefinitions.hpp>
00068 
00069 
00070 
00071 #include <set>
00072 #include <vector>
00073 
00074 
00075 
00076 #include <PlatformSupport/DOMStringHelper.hpp>
00077 
00078 
00079 
00080 class XObject;
00081 
00082 
00083 
00090 class XALAN_XSLT_EXPORT ExtensionFunctionHandler 
00091 {
00092 
00093 public:
00094 
00101     ExtensionFunctionHandler(const XalanDOMString&  namespaceUri);
00102 
00115     ExtensionFunctionHandler(
00116             const XalanDOMString&   namespaceUri,
00117             const XalanDOMString&   funcNames,
00118             const XalanDOMString&   lang,
00119             const XalanDOMString&   srcURL,
00120             const XalanDOMString&   scriptSrc);
00121 
00122 
00123     virtual
00124     ~ExtensionFunctionHandler();
00125 
00132     virtual void
00133     setFunctions(const XalanDOMString&  funcNames);
00134 
00148     virtual void
00149     setScript(
00150             const XalanDOMString&   lang,
00151             const XalanDOMString&   srcURL,
00152             const XalanDOMString&   scriptSrc);
00153 
00160     virtual bool
00161     isFunctionAvailable(const XalanDOMString&   function) const;
00162 
00164 #if defined(XALAN_NO_NAMESPACES)
00165     typedef vector<void*>                               ArgVectorType;
00166     typedef set<XalanDOMString, less<XalanDOMString> >  StringSetType;
00167 #else
00168     typedef std::vector<void*>          ArgVectorType;
00169     typedef std::set<XalanDOMString>    StringSetType;
00170 #endif
00171 
00187 
00188     virtual XObject*
00189     callFunction(
00190             const XalanDOMString&   funcName,
00191             const ArgVectorType&    args);
00192 
00193 protected:
00194 
00195     XalanDOMString  m_namespaceUri;  // uri of the extension namespace
00196     XalanDOMString  m_scriptLang;    // scripting language of implementation
00197     XalanDOMString  m_scriptSrc;     // script source to run (if any)
00198     XalanDOMString  m_scriptSrcURL;  // URL of source of script (if any)
00199 
00200     void* m_javaObject;         // object for javaclass engine
00201 
00202     StringSetType   m_functions; // functions of namespace
00203 
00204     //  BSFManager mgr = new BSFManager (); // mgr used to run scripts
00205 
00206     bool            m_componentStarted; // true when the scripts in a
00207 
00208     // component description (if any) have been run
00209 
00217     virtual void
00218     startupComponent();
00219 };
00220  
00221 
00222 
00223 #endif  // XALAN_EXTENSIONFUNCTIONHANDLER_HEADER_GUARD

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