| /* |
| * 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.types.resources.selectors; |
| |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.Stack; |
| |
| import org.apache.tools.ant.BuildException; |
| import org.apache.tools.ant.Project; |
| import org.apache.tools.ant.types.DataType; |
| |
| /** |
| * ResourceSelector container. |
| * @since Ant 1.7 |
| */ |
| public class ResourceSelectorContainer extends DataType { |
| |
| private final List<ResourceSelector> resourceSelectors = new ArrayList<ResourceSelector>(); |
| |
| /** |
| * Default constructor. |
| */ |
| public ResourceSelectorContainer() { |
| } |
| |
| /** |
| * Construct a new ResourceSelectorContainer with the specified array of selectors. |
| * @param rs the ResourceSelector[] to add. |
| */ |
| public ResourceSelectorContainer(ResourceSelector[] rs) { |
| for (int i = 0; i < rs.length; i++) { |
| add(rs[i]); |
| } |
| } |
| |
| /** |
| * Add a ResourceSelector to the container. |
| * @param s the ResourceSelector to add. |
| */ |
| public void add(ResourceSelector s) { |
| if (isReference()) { |
| throw noChildrenAllowed(); |
| } |
| if (s == null) { |
| return; |
| } |
| resourceSelectors.add(s); |
| setChecked(false); |
| } |
| |
| /** |
| * Learn whether this ResourceSelectorContainer has selectors. |
| * @return boolean indicating whether selectors have been added to the container. |
| */ |
| public boolean hasSelectors() { |
| if (isReference()) { |
| return ((ResourceSelectorContainer) getCheckedRef()).hasSelectors(); |
| } |
| dieOnCircularReference(); |
| return !resourceSelectors.isEmpty(); |
| } |
| |
| /** |
| * Get the count of nested selectors. |
| * @return the selector count as int. |
| */ |
| public int selectorCount() { |
| if (isReference()) { |
| return ((ResourceSelectorContainer) getCheckedRef()).selectorCount(); |
| } |
| dieOnCircularReference(); |
| return resourceSelectors.size(); |
| } |
| |
| /** |
| * Return an Iterator over the nested selectors. |
| * @return Iterator of ResourceSelectors. |
| */ |
| public Iterator<ResourceSelector> getSelectors() { |
| if (isReference()) { |
| return ((ResourceSelectorContainer) getCheckedRef()).getSelectors(); |
| } |
| dieOnCircularReference(); |
| return Collections.unmodifiableList(resourceSelectors).iterator(); |
| } |
| |
| /** |
| * Overrides the version from DataType to recurse on nested ResourceSelectors. |
| * @param stk the Stack of references. |
| * @param p the Project to resolve against. |
| * @throws BuildException on error. |
| */ |
| protected void dieOnCircularReference(Stack<Object> stk, Project p) |
| throws BuildException { |
| if (isChecked()) { |
| return; |
| } |
| if (isReference()) { |
| super.dieOnCircularReference(stk, p); |
| } else { |
| for (ResourceSelector resourceSelector : resourceSelectors) { |
| if (resourceSelector instanceof DataType) { |
| pushAndInvokeCircularReferenceCheck((DataType) resourceSelector, stk, p); |
| } |
| } |
| setChecked(true); |
| } |
| } |
| |
| } |