| /* |
| * 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.lenya.cms.publication.templating; |
| |
| import org.apache.excalibur.source.Source; |
| import org.apache.excalibur.source.SourceResolver; |
| |
| /** |
| * Source visitor to obtain the first existing source. |
| * |
| * @version $Id: ExistingSourceResolver.java 179568 2005-06-02 09:27:26Z jwkaltz $ |
| */ |
| public class ExistingAncestorSourceResolver implements VisitingSourceResolver { |
| |
| private Source source; |
| |
| /** |
| * Ctor. |
| */ |
| public ExistingAncestorSourceResolver() { |
| super(); |
| } |
| |
| /** |
| * @return the ancestor of the first existing source. |
| */ |
| public Source getSource() { |
| return this.source; |
| } |
| |
| private int matches = 0; |
| |
| public void visit(SourceResolver resolver, String sourceUri) { |
| Source source = null; |
| try { |
| source = resolver.resolveURI(sourceUri); |
| if (source.exists()) { |
| matches++; |
| if (matches == 2) { |
| this.source = source; |
| } |
| } |
| } catch (Exception e) { |
| throw new RuntimeException(e); |
| } finally { |
| if (source != null) { |
| resolver.release(source); |
| } |
| } |
| } |
| |
| } |