| Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
| MapEntryRule |
|
| 1.2;1.2 |
| 1 | /* | |
| 2 | * Licensed to the Apache Software Foundation (ASF) under one or more | |
| 3 | * contributor license agreements. See the NOTICE file distributed with | |
| 4 | * this work for additional information regarding copyright ownership. | |
| 5 | * The ASF licenses this file to you under the Apache License, Version 2.0 | |
| 6 | * (the "License"); you may not use this file except in compliance with | |
| 7 | * the License. You may obtain a copy of the License at | |
| 8 | * | |
| 9 | * http://www.apache.org/licenses/LICENSE-2.0 | |
| 10 | * | |
| 11 | * Unless required by applicable law or agreed to in writing, software | |
| 12 | * distributed under the License is distributed on an "AS IS" BASIS, | |
| 13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| 14 | * See the License for the specific language governing permissions and | |
| 15 | * limitations under the License. | |
| 16 | */ | |
| 17 | ||
| 18 | package org.apache.shale.tiger.managed.rules; | |
| 19 | ||
| 20 | import org.apache.commons.digester.Rule; | |
| 21 | import org.apache.shale.tiger.managed.config.MapEntriesConfig; | |
| 22 | import org.apache.shale.tiger.managed.config.MapEntryConfig; | |
| 23 | import org.xml.sax.Attributes; | |
| 24 | ||
| 25 | /** | |
| 26 | * <p>Digester rule for processing a <code><map-entry></code> | |
| 27 | * element.</p> | |
| 28 | */ | |
| 29 | public class MapEntryRule extends Rule { | |
| 30 | ||
| 31 | /** Creates a new instance of MapEntryRule. */ | |
| 32 | 42 | public MapEntryRule() { |
| 33 | 42 | } |
| 34 | ||
| 35 | /** <p>Fully qualified class name of our configuration element bean.</p> */ | |
| 36 | private static final String CLASS_NAME = | |
| 37 | "org.apache.shale.tiger.managed.config.MapEntryConfig"; | |
| 38 | ||
| 39 | /** | |
| 40 | * <p>Create a new {@link MapEntryConfig} and push it on to the | |
| 41 | * Digester stack.</p> | |
| 42 | * | |
| 43 | * @param namespace Namespace URI of the matching element | |
| 44 | * @param name Local name of the matching element | |
| 45 | * @param attributes Attribute list of the matching element | |
| 46 | * | |
| 47 | * @exception Exception if a parsing error occurs | |
| 48 | */ | |
| 49 | public void begin(String namespace, String name, | |
| 50 | Attributes attributes) throws Exception { | |
| 51 | ||
| 52 | 30 | Class clazz = digester.getClassLoader().loadClass(CLASS_NAME); |
| 53 | 30 | digester.push(clazz.newInstance()); |
| 54 | ||
| 55 | 30 | } |
| 56 | ||
| 57 | ||
| 58 | /** | |
| 59 | * <p>No body processing for this element.</p> | |
| 60 | * | |
| 61 | * @param namespace Namespace URI of the matching element | |
| 62 | * @param name Local name of the matching element | |
| 63 | * | |
| 64 | * @throws Exception if a parsing error occurs | |
| 65 | */ | |
| 66 | public void body(String namespace, String name) throws Exception { | |
| 67 | } | |
| 68 | ||
| 69 | ||
| 70 | /** | |
| 71 | * <p>Pop the {@link MapEntriesConfig} instance from the stack, | |
| 72 | * and either add it or merge it with parent information.</p> | |
| 73 | * | |
| 74 | * @param namespace Namespace URI of the matching element | |
| 75 | * @param name Local name of the matching element | |
| 76 | * | |
| 77 | * @exception IllegalStateException if the popped object is not | |
| 78 | * of the correct type | |
| 79 | * @exception Exception if a different error occurs | |
| 80 | */ | |
| 81 | public void end(String namespace, String name) throws Exception { | |
| 82 | ||
| 83 | 30 | MapEntryConfig config = (MapEntryConfig) digester.pop(); |
| 84 | 30 | MapEntriesConfig parent = (MapEntriesConfig) digester.peek(); |
| 85 | 30 | MapEntryConfig previous = parent.getEntry(config.getKey()); |
| 86 | 30 | if (previous == null) { |
| 87 | 30 | parent.addEntry(config); |
| 88 | 30 | } else { |
| 89 | merge(config, previous); | |
| 90 | } | |
| 91 | ||
| 92 | 30 | } |
| 93 | ||
| 94 | ||
| 95 | /** | |
| 96 | * <p>Merge properties from <code>config</code> into | |
| 97 | * <code>previous</code>.</p> | |
| 98 | * | |
| 99 | * @param config Newly constructed bean | |
| 100 | * @param previous Previous bean to merge into | |
| 101 | */ | |
| 102 | static void merge(MapEntryConfig config, MapEntryConfig previous) { | |
| 103 | ||
| 104 | previous.setValue(config.getValue()); | |
| 105 | ||
| 106 | } | |
| 107 | ||
| 108 | ||
| 109 | } |