/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.cocoon.components.treeprocessor.sitemap;
import org.apache.avalon.framework.configuration.Configuration;
import org.apache.avalon.framework.thread.ThreadSafe;
import org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNodeBuilder;
import org.apache.cocoon.components.treeprocessor.ProcessingNode;
import org.apache.cocoon.components.treeprocessor.SimpleSelectorProcessingNode;
import org.apache.cocoon.components.treeprocessor.variables.VariableResolver;
import org.apache.cocoon.components.treeprocessor.variables.VariableResolverFactory;
import org.apache.cocoon.matching.Matcher;
import org.apache.cocoon.matching.PreparableMatcher;
/**
*
* @author <a href="mailto:sylvain@apache.org">Sylvain Wallez</a>
* @version CVS $Id: MatchNodeBuilder.java 433543 2006-08-22 06:22:54Z crossley $
*/
public class MatchNodeBuilder extends AbstractParentProcessingNodeBuilder
implements ThreadSafe {
private static final String SELECTOR_ROLE = Matcher.ROLE + "Selector";
public ProcessingNode buildNode(Configuration config) throws Exception {
String pattern = config.getAttribute("pattern", null);
String name = config.getAttribute("name", null);
String type = this.treeBuilder.getTypeForStatement(config, SELECTOR_ROLE);
// Get the type and class for this matcher
ComponentsSelector selector = (ComponentsSelector)this.manager.lookup(SELECTOR_ROLE);
Class clazz = null;
try {
// Find matcher class
Matcher matcher = (Matcher)selector.select(type);
clazz = matcher.getClass();
selector.release(matcher);
} finally {
this.manager.release(selector);
}
// PreparableMatcher are only prepared if pattern doesn't need request-time resolution.
boolean preparable =
PreparableMatcher.class.isAssignableFrom(clazz) &&
!VariableResolverFactory.needsResolve(pattern);
// Instanciate appropriate node
SimpleSelectorProcessingNode node;
VariableResolver patternResolver = VariableResolverFactory.getResolver(pattern, this.manager);
if (preparable) {
node = new PreparableMatchNode(type, VariableResolverFactory.unescape(pattern),name);
} else {
node = new MatchNode(type, patternResolver,name);
}
this.treeBuilder.setupNode(node, config);
// Get all children
ProcessingNode[] children = buildChildNodes(config);
node.setChildren(children);
return node;
}
}