| /* |
| * 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 java.util.Locale; |
| |
| import org.apache.cocoon.forms.FormsConstants; |
| import org.apache.cocoon.forms.datatype.convertor.Convertor; |
| import org.apache.cocoon.forms.util.DomHelper; |
| import org.apache.cocoon.i18n.I18nUtils; |
| |
| import org.w3c.dom.Element; |
| |
| /** |
| * ValueJXPathBindingBuilder provides a helper class for the Factory |
| * implemented in {@link JXPathBindingManager} that helps construct the |
| * actual {@link ValueJXPathBinding} out of the configuration in the |
| * provided configElement which looks like: |
| * <pre><code> |
| * <fb:value id="<i>widget-id</i>" path="<i>xpath-expression</i>"> |
| * <!-- optional child binding to be executed upon 'save' of changed value --> |
| * <fb:on-update> |
| * <!-- any childbinding --> |
| * </fb:on-update> |
| * </fb:value> |
| * </code></pre> |
| * |
| * @version $Id$ |
| */ |
| public class ValueJXPathBindingBuilder extends JXPathBindingBuilderBase { |
| |
| /** |
| * Creates an instance of {@link ValueJXPathBinding} based on the attributes |
| * and nested configuration of the provided bindingElm. |
| */ |
| public JXPathBindingBase buildBinding(Element bindingElm, JXPathBindingManager.Assistant assistant) |
| throws BindingException { |
| |
| try { |
| CommonAttributes commonAtts = JXPathBindingBuilderBase.getCommonAttributes(bindingElm); |
| String xpath = DomHelper.getAttribute(bindingElm, "path", null); |
| String widgetId = DomHelper.getAttribute(bindingElm, "id", null); |
| |
| Convertor convertor = null; |
| Locale convertorLocale = Locale.US; |
| Element convertorEl = DomHelper.getChildElement(bindingElm, FormsConstants.DEFINITION_NS, "convertor"); |
| if (convertorEl != null) { |
| String datatype = DomHelper.getAttribute(convertorEl, "datatype"); |
| String localeStr = DomHelper.getAttribute(convertorEl, "locale", null); |
| if (localeStr != null) { |
| convertorLocale = I18nUtils.parseLocale(localeStr); |
| } |
| |
| convertor = assistant.getDatatypeManager().createConvertor(datatype, convertorEl); |
| } |
| |
| // do inheritance |
| ValueJXPathBinding otherBinding = (ValueJXPathBinding) assistant.getContext().getSuperBinding(); |
| JXPathBindingBase[] existingUpdateBindings = null; |
| if (otherBinding != null) { |
| commonAtts = JXPathBindingBuilderBase.mergeCommonAttributes(otherBinding.getCommonAtts(), commonAtts); |
| |
| if (xpath == null) { |
| xpath = otherBinding.getXPath(); |
| } |
| if (widgetId == null) { |
| widgetId = otherBinding.getId(); |
| } |
| if (convertor == null) { |
| convertor = otherBinding.getConvertor(); |
| } |
| if (convertorLocale == null) { |
| convertorLocale = otherBinding.getConvertorLocale(); |
| } |
| if (convertorLocale == null) { |
| convertorLocale = otherBinding.getConvertorLocale(); |
| } |
| |
| existingUpdateBindings = otherBinding.getUpdateBinding().getChildBindings(); |
| } |
| |
| Element updateWrapElement = |
| DomHelper.getChildElement(bindingElm, BindingManager.NAMESPACE, "on-update"); |
| JXPathBindingBase[] updateBindings = assistant.makeChildBindings(updateWrapElement,existingUpdateBindings); |
| |
| return new ValueJXPathBinding(commonAtts, widgetId, xpath, updateBindings, |
| convertor, convertorLocale); |
| } catch (BindingException e) { |
| throw e; |
| } catch (Exception e) { |
| throw new BindingException("Error building binding", e, |
| DomHelper.getLocationObject(bindingElm)); |
| } |
| } |
| } |