| /* |
| * 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.tools.ant.util; |
| |
| import java.util.List; |
| import java.util.Iterator; |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import org.apache.tools.ant.types.Mapper; |
| |
| /** |
| * A <code>FileNameMapper</code> that contains |
| * other <code>FileNameMapper</code>s. |
| * @see FileNameMapper |
| */ |
| public abstract class ContainerMapper implements FileNameMapper { |
| |
| private List mappers = new ArrayList(); |
| |
| /** |
| * Add a <code>Mapper</code>. |
| * @param mapper the <code>Mapper</code> to add. |
| */ |
| public void addConfiguredMapper(Mapper mapper) { |
| add(mapper.getImplementation()); |
| } |
| |
| /** |
| * An add configured version of the add method. |
| * This class used to contain an add method and an |
| * addConfiguredMapper method. Dur to ordering, |
| * the add method was always called first. This |
| * addConfigued method has been added to allow |
| * chaining to work correctly. |
| * @param fileNameMapper a <code>FileNameMapper</code>. |
| */ |
| public void addConfigured(FileNameMapper fileNameMapper) { |
| add(fileNameMapper); |
| } |
| |
| /** |
| * Add a <code>FileNameMapper</code>. |
| * @param fileNameMapper a <code>FileNameMapper</code>. |
| * @throws IllegalArgumentException if attempting to add this |
| * <code>ContainerMapper</code> to itself, or if the specified |
| * <code>FileNameMapper</code> is itself a <code>ContainerMapper</code> |
| * that contains this <code>ContainerMapper</code>. |
| */ |
| public synchronized void add(FileNameMapper fileNameMapper) { |
| if (this == fileNameMapper |
| || (fileNameMapper instanceof ContainerMapper |
| && ((ContainerMapper) fileNameMapper).contains(this))) { |
| throw new IllegalArgumentException( |
| "Circular mapper containment condition detected"); |
| } else { |
| mappers.add(fileNameMapper); |
| } |
| } |
| |
| /** |
| * Return <code>true</code> if this <code>ContainerMapper</code> or any of |
| * its sub-elements contains the specified <code>FileNameMapper</code>. |
| * @param fileNameMapper the <code>FileNameMapper</code> to search for. |
| * @return <code>boolean</code>. |
| */ |
| protected synchronized boolean contains(FileNameMapper fileNameMapper) { |
| boolean foundit = false; |
| for (Iterator iter = mappers.iterator(); iter.hasNext() && !foundit;) { |
| FileNameMapper next = (FileNameMapper) (iter.next()); |
| foundit = (next == fileNameMapper |
| || (next instanceof ContainerMapper |
| && ((ContainerMapper) next).contains(fileNameMapper))); |
| } |
| return foundit; |
| } |
| |
| /** |
| * Get the <code>List</code> of <code>FileNameMapper</code>s. |
| * @return <code>List</code>. |
| */ |
| public synchronized List getMappers() { |
| return Collections.unmodifiableList(mappers); |
| } |
| |
| /** |
| * Empty implementation. |
| * @param ignore ignored. |
| */ |
| public void setFrom(String ignore) { |
| //Empty |
| } |
| |
| /** |
| * Empty implementation. |
| * @param ignore ignored. |
| */ |
| public void setTo(String ignore) { |
| //Empty |
| } |
| |
| } |
| |