/*
* $Header: /home/cvs/jakarta-struts/contrib/service-manager/services/factory/src/org/apache/struts/service/factory/SimpleFactory.java,v 1.1 2001/07/25 20:42:22 oalexeev Exp $
* $Revision: 1.1 $
* $Date: 2001/07/25 20:42:22 $
*
* ====================================================================
*
* The Apache Software License, Version 1.1
*
* Copyright (c) 1999-2001 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", "Struts", 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.struts.service.factory;
import java.lang.Class;
import java.lang.Throwable;
import java.lang.reflect.Constructor;
/** Simple factory. Take parameters list and call
* appropriate constructor for such parameters and target type.
*
* @author Oleg V Alexeev
* @version $Revision: 1.1 $ $Date: 2001/07/25 20:42:22 $
*/
public class SimpleFactory extends Factory {
//------------------------------------------------ public methods
/** Core factory method. This method will be called at work
* time to create appropriate bean of <code>type</code> using
* <code>parameters</code>
*
* @param type - class name of target bean, to be created
* @param parameters - array of parameters to use it at creation process
* @exception Throwable if any error occured
*
* @see org.apache.struts.factory.Parameter
*/
public Object create( String type, Parameter[] parameters )
throws Throwable {
Object result = null;
Class clazz = null;
Class[] types = null;
Object[] values = null;
clazz = Class.forName( type );
if( parameters == null ) {
result = clazz.newInstance();
} else {
if( parameters!=null && parameters.length > 0 ) {
types = new Class[ parameters.length ];
values = new Object[ parameters.length ];
ParameterMapping mapping = null;
for( int i = 0; i < parameters.length; i++ ) {
mapping = parameters[ i ].getMapping();
types[ i ] = Class.forName( mapping.getType() );
values[ i ] = parameters[ i ].getValue();
}
}
Constructor constructor = clazz.getConstructor( types );
result = constructor.newInstance( values );
}
return result;
}
}