| /* |
| * 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.woody.binding; |
| |
| import org.apache.cocoon.woody.formmodel.Widget; |
| import org.apache.cocoon.woody.datatype.convertor.Convertor; |
| import org.apache.commons.jxpath.JXPathContext; |
| |
| import java.util.Locale; |
| |
| /** |
| * UniqueFieldJXPathBinding provides an implementation of a {@link Binding} |
| * that that allows the specification of a uniquefields defined inside a repeater. |
| * <p> |
| * NOTES: <ol> |
| * <li>This Binding uses the provided widget-id of a defined field in the repeater.</li> |
| * </ol> |
| * |
| * @version CVS $Id$ |
| */ |
| public class UniqueFieldJXPathBinding extends JXPathBindingBase { |
| |
| /** |
| * The xpath expression to the objectModel property |
| */ |
| private final String xpath; |
| |
| /** |
| * The id of the Woody form-widget |
| */ |
| private final String fieldId; |
| |
| /** |
| * Optional convertor to convert values to and from strings when setting or reading |
| * the from the model. Especially used in combination with XML models where everything |
| * are strings. |
| */ |
| private final Convertor convertor; |
| |
| /** |
| * The locale to pass to the {@link #convertor}. |
| */ |
| private final Locale convertorLocale; |
| |
| /** |
| * Constructs UniqueFieldJXPathBinding. |
| * |
| * @param convertor may be null |
| */ |
| public UniqueFieldJXPathBinding(JXPathBindingBuilderBase.CommonAttributes commonAtts, String widgetId, String xpath, |
| Convertor convertor, Locale convertorLocale) { |
| super(commonAtts); |
| this.fieldId = widgetId; |
| this.xpath = xpath; |
| this.convertor = convertor; |
| this.convertorLocale = convertorLocale; |
| } |
| |
| /** |
| * Actively performs the binding from the ObjectModel wrapped in a jxpath |
| * context to the Woody-form-widget specified in this object. |
| */ |
| public void doLoad(Widget frmModel, JXPathContext jxpc) throws BindingException { |
| Widget widget = frmModel.getWidget(this.fieldId); |
| if (widget == null) { |
| throw new BindingException("The widget with the ID [" + this.fieldId |
| + "] referenced in the binding does not exist in the form definition."); |
| } |
| |
| Object value = jxpc.getValue(this.xpath); |
| if (value != null && convertor != null) { |
| if (value instanceof String) { |
| value = convertor.convertFromString((String)value, convertorLocale, null); |
| } else { |
| getLogger().warn("Convertor ignored on backend-value which isn't of type String."); |
| } |
| } |
| |
| widget.setValue(value); |
| if (getLogger().isDebugEnabled()) { |
| getLogger().debug("Done loading " + toString() + " -- value= " + value); |
| } |
| } |
| |
| /** |
| * Actively performs the binding from the Woody-form to the ObjectModel |
| * wrapped in a jxpath context |
| */ |
| public void doSave(Widget frmModel, JXPathContext jxpc) throws BindingException { |
| // Do nothing |
| } |
| |
| public String toString() { |
| return "UniqueFieldJXPathBinding [widget=" + this.fieldId + ", xpath=" + this.xpath + "]"; |
| } |
| |
| /*public void enableLogging(Logger logger) { |
| super.enableLogging(logger); |
| }*/ |
| /** |
| * @return Returns the convertor. |
| */ |
| public Convertor getConvertor() { |
| return convertor; |
| } |
| /** |
| * @return Returns the convertorLocale. |
| */ |
| public Locale getConvertorLocale() { |
| return convertorLocale; |
| } |
| /** |
| * @return Returns the fieldId. |
| */ |
| public String getFieldId() { |
| return fieldId; |
| } |
| /** |
| * @return Returns the xpath. |
| */ |
| public String getXpath() { |
| return xpath; |
| } |
| } |