jstrachan 2003/02/20 10:56:16 Modified: jelly/jelly-tags/bsf/src/java/org/apache/commons/jelly/tags/bsf BSFTagLibrary.java Added: jelly/jelly-tags/bsf/src/java/org/apache/commons/jelly/tags/bsf ScriptTag.java Log: Added an initial version of a <script> tag to the BSF library which should be usable in JavaScript, Jython, PNuts etc Revision Changes Path 1.2 +41 -3 jakarta-commons/jelly/jelly-tags/bsf/src/java/org/apache/commons/jelly/tags/bsf/BSFTagLibrary.java Index: BSFTagLibrary.java =================================================================== RCS file: /home/cvs/jakarta-commons/jelly/jelly-tags/bsf/src/java/org/apache/commons/jelly/tags/bsf/BSFTagLibrary.java,v retrieving revision 1.1 retrieving revision 1.2 diff -u -r1.1 -r1.2 --- BSFTagLibrary.java 8 Jan 2003 05:02:47 -0000 1.1 +++ BSFTagLibrary.java 20 Feb 2003 18:56:16 -0000 1.2 @@ -61,8 +61,15 @@ */ package org.apache.commons.jelly.tags.bsf; +import org.apache.commons.jelly.JellyException; +import org.apache.commons.jelly.Tag; import org.apache.commons.jelly.expression.ExpressionFactory; +import org.apache.commons.jelly.impl.TagFactory; import org.apache.commons.jelly.tags.core.CoreTagLibrary; +import org.xml.sax.Attributes; + +import com.ibm.bsf.BSFEngine; +import com.ibm.bsf.BSFException; /** Describes the Taglib. This class could be generated by XDoclet @@ -74,6 +81,18 @@ private BSFExpressionFactory expressionFactory = new BSFExpressionFactory(); + public BSFTagLibrary() { + registerTagFactory( + "script", + new TagFactory() { + public Tag createTag(String name, Attributes attributes) + throws JellyException { + return createScriptTag(name, attributes); + } + } + ); + } + public void setLanguage(String language) { expressionFactory.setLanguage(language); } @@ -83,4 +102,23 @@ return expressionFactory; } + protected BSFEngine getBSFEngine() throws BSFException { + return expressionFactory.getBSFEngine(); + } + + /** + * Factory method to create a new ScriptTag with a BSFEngine + * + * @param name is the name of the tag (typically 'script') + * @param attributes the attributes of the tag + * @return Tag + */ + protected Tag createScriptTag(String name, Attributes attributes) throws JellyException { + try { + return new ScriptTag( expressionFactory.getBSFEngine() ); + } + catch (BSFException e) { + throw new JellyException("Failed to create BSFEngine: " + e, e); + } + } } 1.1 jakarta-commons/jelly/jelly-tags/bsf/src/java/org/apache/commons/jelly/tags/bsf/ScriptTag.java Index: ScriptTag.java =================================================================== /* * $Header: /home/cvs/jakarta-commons/jelly/jelly-tags/bsf/src/java/org/apache/commons/jelly/tags/bsf/ScriptTag.java,v 1.1 2003/02/20 18:56:16 jstrachan Exp $ * $Revision: 1.1 $ * $Date: 2003/02/20 18:56:16 $ * * ==================================================================== * * The Apache Software License, Version 1.1 * * Copyright (c) 2002 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 acknowlegement: * "This product includes software developed by the * Apache Software Foundation (http://www.apache.org/)." * Alternately, this acknowlegement may appear in the software itself, * if and wherever such third-party acknowlegements normally appear. * * 4. The names "The Jakarta Project", "Commons", 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 [EMAIL PROTECTED] * * 5. Products derived from this software may not be called "Apache" * nor may "Apache" appear in their names without prior written * permission of the Apache Group. * * 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. For more * information on the Apache Software Foundation, please see * <http://www.apache.org/>. * * $Id: ScriptTag.java,v 1.1 2003/02/20 18:56:16 jstrachan Exp $ */ package org.apache.commons.jelly.tags.bsf; import org.apache.commons.jelly.JellyTagException; import org.apache.commons.jelly.LocationAware; import org.apache.commons.jelly.MissingAttributeException; import org.apache.commons.jelly.TagSupport; import org.apache.commons.jelly.XMLOutput; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import com.ibm.bsf.BSFEngine; import com.ibm.bsf.BSFException; /** * A tag which evaluates its body using the current scripting language * * @author <a href="mailto:[EMAIL PROTECTED]">James Strachan</a> * @version $Revision: 1.1 $ */ public class ScriptTag extends TagSupport implements LocationAware { /** The Log to which logging calls will be made. */ private static final Log log = LogFactory.getLog(ScriptTag.class.getName() + ".evaluating"); private BSFEngine engine; private String elementName; private String fileName; private int columnNumber; private int lineNumber; public ScriptTag(BSFEngine engine) { this.engine = engine; } // Tag interface //------------------------------------------------------------------------- public void doTag(XMLOutput output) throws MissingAttributeException, JellyTagException { String text = getBodyText(); log.debug(text); try { engine.eval(fileName, lineNumber, columnNumber, text); } catch (BSFException e) { throw new JellyTagException("Error occurred with script: " + e, e); } } // Properties //------------------------------------------------------------------------- /** * @return int */ public int getColumnNumber() { return columnNumber; } /** * @return String */ public String getElementName() { return elementName; } /** * @return BSFEngine */ public BSFEngine getEngine() { return engine; } /** * @return String */ public String getFileName() { return fileName; } /** * @return int */ public int getLineNumber() { return lineNumber; } /** * Sets the columnNumber. * @param columnNumber The columnNumber to set */ public void setColumnNumber(int columnNumber) { this.columnNumber = columnNumber; } /** * Sets the elementName. * @param elementName The elementName to set */ public void setElementName(String elementName) { this.elementName = elementName; } /** * Sets the engine. * @param engine The engine to set */ public void setEngine(BSFEngine engine) { this.engine = engine; } /** * Sets the fileName. * @param fileName The fileName to set */ public void setFileName(String fileName) { this.fileName = fileName; } /** * Sets the lineNumber. * @param lineNumber The lineNumber to set */ public void setLineNumber(int lineNumber) { this.lineNumber = lineNumber; } }
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