| /* |
| * Copyright 2002,2004 The Apache Software Foundation. |
| * |
| * Licensed 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.commons.jelly.tags.util; |
| |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.List; |
| |
| import org.apache.commons.beanutils.BeanComparator; |
| import org.apache.commons.jelly.JellyTagException; |
| import org.apache.commons.jelly.MissingAttributeException; |
| import org.apache.commons.jelly.TagSupport; |
| import org.apache.commons.jelly.XMLOutput; |
| |
| public class SortTag extends TagSupport { |
| |
| /** things to sort */ |
| private List items; |
| |
| /** the variable to store the result in */ |
| private String var; |
| |
| /** property of the beans to sort on, if any */ |
| private String property; |
| |
| // Tag interface |
| //------------------------------------------------------------------------- |
| public void doTag(final XMLOutput output) throws JellyTagException { |
| if (var == null) |
| { |
| throw new MissingAttributeException("var"); |
| } |
| |
| if (items == null) { |
| throw new MissingAttributeException("items"); |
| } |
| |
| List sorted = new ArrayList(items); |
| if (property == null) { |
| Collections.sort(sorted); |
| } else { |
| BeanComparator comparator = new BeanComparator(property); |
| Collections.sort(sorted, comparator); |
| } |
| context.setVariable(var, sorted); |
| } |
| |
| /** |
| * Set the items to be sorted |
| * @param newItems some collection |
| */ |
| public void setItems(List newItems) { |
| items = newItems; |
| } |
| |
| /** |
| * The variable to hold the sorted collection. |
| * @param newVar the name of the variable. |
| */ |
| public void setVar(String newVar) { |
| var = newVar; |
| } |
| |
| public void setProperty(String newProperty) |
| { |
| property = newProperty; |
| } |
| } |