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| org.apache.commons.jelly.tags.core.UseListTag |
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| 1 | /* |
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| 2 | * Copyright 2002,2004 The Apache Software Foundation. |
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| 3 | * |
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| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
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| 5 | * you may not use this file except in compliance with the License. |
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| 6 | * You may obtain a copy of the License at |
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| 7 | * |
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| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
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| 9 | * |
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| 10 | * Unless required by applicable law or agreed to in writing, software |
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| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
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| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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| 13 | * See the License for the specific language governing permissions and |
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| 14 | * limitations under the License. |
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| 15 | */ |
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| 16 | package org.apache.commons.jelly.tags.core; |
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| 17 | ||
| 18 | import java.util.ArrayList; |
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| 19 | import java.util.Iterator; |
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| 20 | import java.util.List; |
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| 21 | import java.util.Map; |
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| 22 | ||
| 23 | import org.apache.commons.jelly.JellyTagException; |
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| 24 | import org.apache.commons.jelly.expression.Expression; |
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| 25 | import org.apache.commons.jelly.impl.CollectionTag; |
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| 26 | ||
| 27 | /** |
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| 28 | * A tag which creates a List implementation and optionally |
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| 29 | * adds all of the elements identified by the items attribute. |
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| 30 | * The exact implementation of List can be specified via the |
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| 31 | * class attribute |
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| 32 | * </pre> |
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| 33 | * |
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| 34 | * @author <a href="mailto:jstrachan@apache.org">James Strachan</a> |
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| 35 | * @version $Revision: 155420 $ |
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| 36 | */ |
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| 37 | public class UseListTag extends UseBeanTag implements CollectionTag { |
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| 38 | ||
| 39 | private Expression items; |
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| 40 | ||
| 41 | 0 | public UseListTag(){ |
| 42 | 0 | } |
| 43 | ||
| 44 | public List getList() { |
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| 45 | 0 | return (List) getBean(); |
| 46 | } |
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| 47 | ||
| 48 | ||
| 49 | // CollectionTag interface |
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| 50 | //------------------------------------------------------------------------- |
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| 51 | public void addItem(Object value) { |
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| 52 | 0 | getList().add(value); |
| 53 | 0 | } |
| 54 | ||
| 55 | // DynaTag interface |
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| 56 | //------------------------------------------------------------------------- |
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| 57 | public Class getAttributeType(String name) throws JellyTagException { |
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| 58 | 0 | if (name.equals("items")) { |
| 59 | 0 | return Expression.class; |
| 60 | } |
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| 61 | 0 | return super.getAttributeType(name); |
| 62 | } |
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| 63 | ||
| 64 | ||
| 65 | // Implementation methods |
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| 66 | //------------------------------------------------------------------------- |
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| 67 | ||
| 68 | protected void setBeanProperties(Object bean, Map attributes) throws JellyTagException { |
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| 69 | 0 | items = (Expression) attributes.remove("items"); |
| 70 | 0 | super.setBeanProperties(bean, attributes); |
| 71 | 0 | } |
| 72 | ||
| 73 | protected void processBean(String var, Object bean) throws JellyTagException { |
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| 74 | 0 | super.processBean(var, bean); |
| 75 | ||
| 76 | 0 | List list = getList(); |
| 77 | ||
| 78 | // if the items variable is specified lets append all the items |
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| 79 | 0 | if (items != null) { |
| 80 | 0 | Iterator iter = items.evaluateAsIterator(context); |
| 81 | 0 | while (iter.hasNext()) { |
| 82 | 0 | list.add( iter.next() ); |
| 83 | 0 | } |
| 84 | } |
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| 85 | 0 | } |
| 86 | ||
| 87 | protected Class getDefaultClass() { |
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| 88 | 0 | return ArrayList.class; |
| 89 | } |
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| 90 | } |
| This report is generated by jcoverage, Maven and Maven JCoverage Plugin. |