| /* |
| * 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.binding; |
| |
| import org.apache.cocoon.forms.formmodel.Union; |
| import org.apache.cocoon.forms.formmodel.Widget; |
| |
| import org.apache.commons.jxpath.JXPathContext; |
| |
| /** |
| * UnionJXPathBinding provides an implementation of a {@link Binding} |
| * that narrows the context towards provided childbindings. |
| * <p>NOTES: |
| * <ol> |
| * <li>This Binding assumes that the provided widget-id points to a |
| * union widget.</li> |
| * </ol> |
| * |
| * @version $Id$ |
| */ |
| public class UnionJXPathBinding extends ComposedJXPathBindingBase { |
| |
| private final String xpath; |
| |
| private final String widgetId; |
| |
| /** |
| * Constructs UnionJXPathBinding |
| * @param commonAtts |
| * @param widgetId |
| * @param xpath |
| * @param childBindings |
| */ |
| public UnionJXPathBinding(JXPathBindingBuilderBase.CommonAttributes commonAtts, |
| String widgetId, |
| String xpath, |
| JXPathBindingBase[] childBindings) { |
| super(commonAtts, childBindings); |
| this.widgetId = widgetId; |
| this.xpath = xpath; |
| } |
| |
| public String getXPath() { return xpath; } |
| public String getId() { return widgetId; } |
| |
| /** |
| * Narrows the scope on the form-model to the member widget-field, and |
| * narrows the scope on the object-model to the member xpath-context |
| * before continuing the binding over the child-bindings. |
| */ |
| public void doLoad(Widget frmModel, JXPathContext jxpc) throws BindingException { |
| Widget widget = selectWidget(frmModel, this.widgetId); |
| JXPathContext subContext = jxpc.getRelativeContext(jxpc.getPointer(this.xpath)); |
| if (!(widget instanceof Union)) { |
| throw new RuntimeException("Binding: Expected Union widget, but received class: \"" + |
| widget.getClass().getName() + "\"."); |
| } |
| Union unionWidget = (Union)widget; |
| Binding[] subBindings = getChildBindings(); |
| if (subBindings != null) { |
| int size = subBindings.length; |
| for (int i = 0; i < size; i++) { |
| subBindings[i].loadFormFromModel(unionWidget, subContext); |
| } |
| } |
| if (getLogger().isDebugEnabled()) { |
| getLogger().debug("done loading " + this); |
| } |
| } |
| |
| /** |
| * Narrows the scope on the form-model to the member widget-field, and |
| * narrows the scope on the object-model to the member xpath-context |
| * before continuing the binding over the child-bindings. |
| */ |
| public void doSave(Widget frmModel, JXPathContext jxpc) throws BindingException { |
| Union unionWidget = (Union)selectWidget(frmModel, this.widgetId); |
| JXPathContext subContext = jxpc.getRelativeContext(jxpc.getPointer(this.xpath)); |
| Binding[] subBindings = getChildBindings(); |
| if (subBindings != null) { |
| int size = subBindings.length; |
| for (int i = 0; i < size; i++) { |
| subBindings[i].saveFormToModel(unionWidget, subContext); |
| } |
| } |
| if (getLogger().isDebugEnabled()) { |
| getLogger().debug("done saving " + this); |
| } |
| } |
| |
| public String toString() { |
| return "UnionJXPathBinding [widget=" + this.widgetId + ", xpath=" + this.xpath + "]"; |
| } |
| } |