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From sbaill...@apache.org
Subject cvs commit: jakarta-ant/proposal/sandbox/antlib/src/main/org/apache/tools/ant/types DataTypeAdapterTask.java
Date Mon, 11 Feb 2002 07:00:06 GMT
sbailliez    02/02/10 23:00:06

  Added:       proposal/sandbox/antlib/src/main/org/apache/tools/ant/types
                        DataTypeAdapterTask.java
  Log:
  Initial commit. Was missed in the original one. Sorry Jose.
  
  Revision  Changes    Path
  1.1                  jakarta-ant/proposal/sandbox/antlib/src/main/org/apache/tools/ant/types/DataTypeAdapterTask.java
  
  Index: DataTypeAdapterTask.java
  ===================================================================
  /*
   * The Apache Software License, Version 1.1
   *
   * Copyright (c) 2000-2001 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 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.types;
  
  import java.lang.reflect.Method;
  import org.apache.tools.ant.*;
  
  
  /**
   *  Use introspection to "adapt" a DataType to be accepted in a Task position
   *
   * @author j_a_fernandez@yahoo.com
   */
  public class DataTypeAdapterTask extends Task implements RoleAdapter {
  
      Object proxy;
      
      /**
       * Checks a class, whether it is suitable to be adapted.
       *
       * Throws a BuildException and logs as Project.MSG_ERR for
       * conditions, that will cause the task execution to fail.
       * Logs other suspicious conditions with Project.MSG_WARN.
       */
      public static void checkClass(final Class typeClass, 
  				  final Project project) {
          // Any class can be used as a data type
      }
      
      /**
       * Do the execution.
       */
      public void execute() throws BuildException {
  	// Check to see if the DataType has a setProject method to set
  	if (proxy instanceof ProjectComponent) {
  	    ((ProjectComponent)proxy).setProject(project);
  	    return;
  	}
  
  	// This may not be needed
  	// We are trying to set project even it is was not declared
  	// just like TaskAdapter does for beans, this is not done
  	// by the original code
          Method setProjectM = null;
          try {
              Class c = proxy.getClass();
              setProjectM = 
                  c.getMethod( "setProject", new Class[] {Project.class});
              if(setProjectM != null) {
                  setProjectM.invoke(proxy, new Object[] {project});
              }
          } catch (NoSuchMethodException e) {
              // ignore this if the class being used as a task does not have
              // a set project method.
          } catch( Exception ex ) {
              log("Error setting project in " + proxy.getClass(), 
                  Project.MSG_ERR);
              throw new BuildException( ex );
          }
      }
      
      /**
       * Set the target object class
       */
      public void setProxy(Object o) {
          this.proxy = o;
      }
  
      public Object getProxy() {
          return this.proxy ;
      }
  
  }
  
  
  

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