| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.cocoon.forms.formmodel.tree.builder; |
| |
| import org.apache.avalon.framework.context.Context; |
| import org.apache.avalon.framework.context.ContextException; |
| import org.apache.avalon.framework.context.Contextualizable; |
| import org.apache.avalon.framework.logger.AbstractLogEnabled; |
| import org.apache.avalon.framework.service.ServiceException; |
| import org.apache.avalon.framework.service.ServiceManager; |
| import org.apache.avalon.framework.service.Serviceable; |
| |
| import org.apache.cocoon.components.LifecycleHelper; |
| import org.apache.cocoon.forms.FormsException; |
| import org.apache.cocoon.forms.formmodel.tree.JavaTreeModelDefinition; |
| import org.apache.cocoon.forms.formmodel.tree.TreeModel; |
| import org.apache.cocoon.forms.formmodel.tree.TreeModelDefinition; |
| import org.apache.cocoon.forms.util.DomHelper; |
| |
| import org.w3c.dom.Element; |
| |
| /** |
| * Builds a {@link TreeModelDefinition} based on an arbitrary Java class. |
| * Avalon lifecycle will be run on the target class when instanciated. |
| * |
| * @version $Id$ |
| */ |
| public class JavaTreeModelDefinitionBuilder extends AbstractLogEnabled |
| implements TreeModelDefinitionBuilder, Contextualizable, |
| Serviceable { |
| |
| Context ctx; |
| ServiceManager manager; |
| |
| |
| public void contextualize(Context context) throws ContextException { |
| this.ctx = context; |
| } |
| |
| public void service(ServiceManager manager) throws ServiceException { |
| this.manager = manager; |
| } |
| |
| public TreeModelDefinition build(Element treeModelElement) throws Exception { |
| String className = DomHelper.getAttribute(treeModelElement, "class"); |
| |
| Class modelClass; |
| try { |
| modelClass = Thread.currentThread().getContextClassLoader().loadClass(className); |
| } catch(Exception e) { |
| throw new FormsException("Cannot load class '" + className + "'.", |
| e, DomHelper.getLocationObject(treeModelElement)); |
| } |
| |
| if (!TreeModel.class.isAssignableFrom(modelClass)) { |
| throw new FormsException("Class '" + className + "' doesn't implement TreeModel.", |
| DomHelper.getLocationObject(treeModelElement)); |
| } |
| |
| JavaTreeModelDefinition definition = new JavaTreeModelDefinition(); |
| |
| LifecycleHelper.setupComponent(definition, getLogger(), ctx, manager, null); |
| |
| definition.setModelClass(modelClass); |
| |
| return definition; |
| } |
| |
| } |