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.cocoon.components.treeprocessor.AbstractParentProcessingNode;
20: import org.apache.cocoon.components.treeprocessor.ProcessingNode;
21:
22: import org.apache.cocoon.environment.Environment;
23:
24: /**
25: * @author <a href="mailto:sylvain@apache.org">Sylvain Wallez</a>
26: * @version $Id: SimpleParentProcessingNode.java 433543 2006-08-22 06:22:54Z crossley $
27: */
28: public abstract class SimpleParentProcessingNode extends
29: AbstractParentProcessingNode {
30:
31: /** The childrens of this matcher */
32: protected ProcessingNode[] children;
33:
34: public void setChildren(ProcessingNode[] children) {
35: this .children = children;
36: }
37:
38: /**
39: * Boolean method with returns true if this Node has children
40: * and false otherwise.
41: *
42: * @return boolean true if has children.
43: */
44: public boolean hasChildren() {
45: return this .children != null && this .children.length > 0;
46: }
47:
48: /**
49: * Define common invoke behavior here
50: */
51: public boolean invoke(Environment env, InvokeContext context)
52: throws Exception {
53: // Inform the pipeline (if available) that we have come across
54: // a possible branch point
55: if (context.pipelineIsSet() && hasChildren()) {
56: context.getProcessingPipeline().informBranchPoint();
57: }
58:
59: // processing not yet complete, so return false
60: return false;
61: }
62: }
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