01: /*
02: * Licensed to the Apache Software Foundation (ASF) under one or more
03: * contributor license agreements. See the NOTICE file distributed with
04: * this work for additional information regarding copyright ownership.
05: * The ASF licenses this file to You under the Apache License, Version 2.0
06: * (the "License"); you may not use this file except in compliance with
07: * the License. You may obtain a copy of the License at
08: *
09: * 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: package org.apache.cocoon.components.treeprocessor;
18:
19: import org.apache.avalon.framework.configuration.Configuration;
20: import org.apache.avalon.framework.configuration.ConfigurationException;
21: import org.apache.avalon.framework.thread.ThreadSafe;
22:
23: /**
24: * Builds a generic container node.
25: *
26: * @author <a href="mailto:sylvain@apache.org">Sylvain Wallez</a>
27: * @version CVS $Id: ContainerNodeBuilder.java 433543 2006-08-22 06:22:54Z crossley $
28: */
29:
30: public class ContainerNodeBuilder extends
31: AbstractParentProcessingNodeBuilder implements ThreadSafe {
32:
33: /** This builder has no parameters -- return <code>false</code> */
34: protected boolean hasParameters() {
35: return false;
36: }
37:
38: public ProcessingNode buildNode(Configuration config)
39: throws Exception {
40:
41: ContainerNode node = new ContainerNode();
42: setupNode(node, config);
43:
44: return node;
45: }
46:
47: protected void setupNode(ContainerNode node, Configuration config)
48: throws Exception {
49:
50: this .treeBuilder.setupNode(node, config);
51:
52: ProcessingNode[] children = buildChildNodes(config);
53: if (children.length == 0) {
54: String msg = "There must be at least one child at "
55: + config.getLocation();
56: throw new ConfigurationException(msg);
57: }
58:
59: node.setChildren(children);
60: }
61: }
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