001 /***************************************************************************** 002 * Copyright (C) NanoContainer Organization. All rights reserved. * 003 * ------------------------------------------------------------------------- * 004 * The software in this package is published under the terms of the BSD * 005 * style license a copy of which has been included with this distribution in * 006 * the LICENSE.txt file. * 007 * * 008 * Original code by James Strachan * 009 *****************************************************************************/ 010 011 package org.nanocontainer.script.groovy.buildernodes; 012 013 import java.util.Map; 014 015 import org.nanocontainer.NanoContainer; 016 import org.nanocontainer.script.NanoContainerMarkupException; 017 import groovy.lang.GroovyObject; 018 import org.nanocontainer.DefaultNanoContainer; 019 import org.picocontainer.MutablePicoContainer; 020 021 /** 022 * Handles the child of container 'newBuilder' node. 023 * @author James Strachan 024 * @author Paul Hammant 025 * @author Aslak Hellesøy 026 * @author Michael Rimov 027 * @author Mauro Talevi 028 * @version $Revision: 2695 $ 029 */ 030 public class NewBuilderNode extends AbstractBuilderNode { 031 032 /** 033 * Node name we're handling: 'newBuilder'. 034 */ 035 public static final String NODE_NAME = "newBuilder"; 036 037 /** 038 * Supported attribute: 'class'. 039 */ 040 public static final String CLASS_ATTRIBUTE = "class"; 041 042 /** 043 * Suppoerted attribute 'validating'. Indicates that attributes should 044 * be validated and NanoContainerMarkupException should be thrown 045 * if invalid attributes are found. 046 * @todo Not yet implemented. How do we get NanoContainer to register 047 * a component instance? -MR 048 */ 049 public static final String VALIDATE_ATTRIBUTE = "validating"; 050 051 052 public NewBuilderNode() { 053 super(NODE_NAME); 054 055 addAttribute(CLASS_ATTRIBUTE); 056 addAttribute(VALIDATE_ATTRIBUTE); 057 } 058 059 public Object createNewNode(final Object current, final Map attributes) { 060 Object builderClass = attributes.remove(CLASS_ATTRIBUTE); 061 062 063 NanoContainer factory = new DefaultNanoContainer(); 064 MutablePicoContainer parentPico = ((NanoContainer) current).getPico(); 065 factory.getPico().registerComponentInstance(MutablePicoContainer.class, parentPico); 066 try { 067 if (builderClass instanceof String) { 068 factory.registerComponentImplementation(GroovyObject.class, (String) builderClass); 069 } else { 070 factory.getPico().registerComponentImplementation(GroovyObject.class, (Class) builderClass); 071 } 072 } catch (ClassNotFoundException e) { 073 throw new NanoContainerMarkupException("ClassNotFoundException " + builderClass); 074 } 075 Object componentInstance = factory.getPico().getComponentInstance(GroovyObject.class); 076 return componentInstance; 077 } 078 079 }