| /* |
| * The Apache Software License, Version 1.1 |
| * |
| * Copyright (c) 2001-2002 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", "Ant", 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 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/>. |
| */ |
| package org.apache.tools.ant.taskdefs.optional.jsp.compilers; |
| |
| import org.apache.tools.ant.AntClassLoader; |
| import org.apache.tools.ant.BuildException; |
| import org.apache.tools.ant.Task; |
| |
| |
| /** |
| * Creates the necessary compiler adapter, given basic criteria. |
| * |
| * @author <a href="mailto:jayglanville@home.com">J D Glanville</a> |
| * @author Matthew Watson <a href="mailto:mattw@i3sp.com">mattw@i3sp.com</a> |
| */ |
| public class JspCompilerAdapterFactory { |
| |
| /** This is a singleton -- can't create instances!! */ |
| private JspCompilerAdapterFactory() { |
| } |
| |
| /** |
| * Based on the parameter passed in, this method creates the necessary |
| * factory desired. |
| * |
| * The current mapping for compiler names are as follows: |
| * <ul><li>jasper = jasper compiler (the default) |
| * <li><i>a fully quallified classname</i> = the name of a jsp compiler |
| * adapter |
| * </ul> |
| * |
| * @param compilerType either the name of the desired compiler, or the |
| * full classname of the compiler's adapter. |
| * @param task a task to log through. |
| * @throws BuildException if the compiler type could not be resolved into |
| * a compiler adapter. |
| */ |
| public static JspCompilerAdapter getCompiler(String compilerType, Task task) |
| throws BuildException { |
| return getCompiler(compilerType, task, |
| new AntClassLoader(task.getProject(), null)); |
| } |
| |
| /** |
| * Based on the parameter passed in, this method creates the necessary |
| * factory desired. |
| * |
| * The current mapping for compiler names are as follows: |
| * <ul><li>jasper = jasper compiler (the default) |
| * <li><i>a fully quallified classname</i> = the name of a jsp compiler |
| * adapter |
| * </ul> |
| * |
| * @param compilerType either the name of the desired compiler, or the |
| * full classname of the compiler's adapter. |
| * @param task a task to log through. |
| * @param loader AntClassLoader with which the compiler should be loaded |
| * @throws BuildException if the compiler type could not be resolved into |
| * a compiler adapter. |
| */ |
| public static JspCompilerAdapter getCompiler(String compilerType, Task task, |
| AntClassLoader loader) |
| throws BuildException { |
| /* If I've done things right, this should be the extent of the |
| * conditional statements required. |
| */ |
| if (compilerType.equalsIgnoreCase("jasper")) { |
| return new JasperC(); |
| } |
| return resolveClassName(compilerType, loader); |
| } |
| |
| /** |
| * Tries to resolve the given classname into a compiler adapter. |
| * Throws a fit if it can't. |
| * |
| * @param className The fully qualified classname to be created. |
| * @param classloader Classloader with which to load the class |
| * @throws BuildException This is the fit that is thrown if className |
| * isn't an instance of JspCompilerAdapter. |
| */ |
| private static JspCompilerAdapter resolveClassName(String className, |
| AntClassLoader classloader) |
| throws BuildException { |
| try { |
| Class c = classloader.findClass(className); |
| Object o = c.newInstance(); |
| return (JspCompilerAdapter) o; |
| } catch (ClassNotFoundException cnfe) { |
| throw new BuildException(className + " can\'t be found.", cnfe); |
| } catch (ClassCastException cce) { |
| throw new BuildException(className + " isn\'t the classname of " |
| + "a compiler adapter.", cce); |
| } catch (Throwable t) { |
| // for all other possibilities |
| throw new BuildException(className + " caused an interesting " |
| + "exception.", t); |
| } |
| } |
| |
| } |
