Factory.java :  » XML-UI » swixml » org » swixml » Java Open Source

/*--
 $Id: Factory.java,v 1.1 2004/03/01 07:56:05 wolfpaulus Exp $

 Copyright (C) 2003-2007 Wolf Paulus.
 All rights reserved.

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 2. Redistributions in binary form must reproduce the above copyright
 notice, this list of conditions, and the disclaimer that follows
 these conditions in the documentation and/or other materials provided
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 3. The end-user documentation included with the redistribution,
 if any, must include the following acknowledgment:
        "This product includes software developed by the
         SWIXML Project (http://www.swixml.org/)."
 Alternately, this acknowledgment may appear in the software itself,
 if and wherever such third-party acknowledgments normally appear.

 4. The name "Swixml" must not be used to endorse or promote products
 derived from this software without prior written permission. For
 written permission, please contact <info_AT_swixml_DOT_org>

 5. Products derived from this software may not be called "Swixml",
 nor may "Swixml" appear in their name, without prior written
 permission from the Swixml Project Management.

 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 SWIXML PROJECT OR ITS
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 ====================================================================

 This software consists of voluntary contributions made by many
 individuals on behalf of the Swixml Project and was originally
 created by Wolf Paulus <wolf_AT_swixml_DOT_org>. For more information
 on the Swixml Project, please see <http://www.swixml.org/>.
*/

package org.swixml;

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.Collection;

/**
 * An interface to represent a generic factory
 *
 * @author <a href="mailto:wolf@paulus.com">Wolf Paulus</a>
 * @version $Revision: 1.1 $
 */
public interface Factory {
  /** Specifies the prefix string for all setter methods */
  static final String SETTER_ID = "set";
  static final String ADDER_ID = "add";
  /**
   * Create a new component instance
   *
   * @return instance <code>Object</code> a new instance of a template class
   * @throws Exception
   */
  Object newInstance() throws Exception;

  /**
   * Creates a new Object which class is {@link #getTemplate()}
   * @param parameter <code>Object</code>, parameter used during construction or initialization.
   * @return instance <code>Object</code> a new instance of a template class
   * @throws Exception
   */
  Object newInstance( Object parameter ) throws Exception;

  /**
   * Creates a new Object which class is {@link #getTemplate()} and the constructor
   * parameter are <code>parameter</code>.
   *
   * @param parameter <code>Object[]</code> the parameter array to be passed into the constructor
   * @return <code>Object</object> - the created object, an instance of the template class
   * @throws InstantiationException if the creation of the object failed
   * @throws IllegalAccessException if the constructor is either private or protected.
   * @throws InvocationTargetException if the constructor invoked throws an exception
   */
  Object newInstance(Object[] parameter) throws InstantiationException, IllegalAccessException, InvocationTargetException;

  /**
   * @return class - <code>Class</code> the backing class template
   */
  Class getTemplate();

  /**
   * @return <code>Collection</code> - containing all available setter methods
   */
  Collection getSetters();

  /**
   * Returns a setter method, which accepts a parameter of the given type
   * @param template <code>Class</code> type of the setter method's parameter
   * @return <code>Method</code> setter method which maybe invoked on an object of the template class
   */
  Method getSetter( Class template );

  /**
   * Returns a setter method by name<br>
   * @param name <code>String</code> name of the setter method
   * @return <code>Method</code> - setter method which can be invoked on an object of the template class
   * @see #guessSetter
   * <pre><b>Typical Use:</b>
   * <p>Method method = factory.getSetter(&quot;set&quot; + Parser.capitalize(attr.getName()));</p>
   * </pre>
   */
  Method getSetter( String name );

  /**
   * Returns a setter method by a Attribute name.
   * Differently to the <code>getSetter</code> method, here the attibute name can be used directly and
   * case doesn't matter.<br>
   * @param name <code>String</code> name of the setter method
   * @return <code>Method</code> - setter method which can invoked on an object of the template class
   * @see #getSetter
   * <pre><b>Typical Use:</b>
   * <p>Method method = factory.getSetter( attr.getName() );</p>
   * </pre>
   */
  Method guessSetter(String name);

}