org.apache.tools.ant.types.resources.Restrict Maven / Gradle / Ivy
/*
* 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
*
* https://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;
import java.util.Iterator;
import java.util.Stack;
import org.apache.tools.ant.Project;
import org.apache.tools.ant.types.Resource;
import org.apache.tools.ant.types.ResourceCollection;
import org.apache.tools.ant.types.resources.selectors.ResourceSelector;
import org.apache.tools.ant.types.resources.selectors.ResourceSelectorContainer;
/**
* ResourceCollection that allows a number of selectors to be
* applied to a single ResourceCollection for the purposes of
* restricting or narrowing results.
* @since Ant 1.7
*/
public class Restrict
extends ResourceSelectorContainer implements ResourceCollection {
private LazyResourceCollectionWrapper w = new LazyResourceCollectionWrapper() {
/**
* Restrict the nested ResourceCollection based on the nested selectors.
*/
@Override
protected boolean filterResource(Resource r) {
return getResourceSelectors().stream().anyMatch(rsel -> !rsel.isSelected(r));
}
};
/**
* Add the ResourceCollection.
* @param c the ResourceCollection to add.
*/
public synchronized void add(ResourceCollection c) {
if (isReference()) {
throw noChildrenAllowed();
}
if (c == null) {
return;
}
w.add(c);
setChecked(false);
}
/**
* Set whether to cache collections.
* @param b boolean cache flag.
*/
public synchronized void setCache(boolean b) {
w.setCache(b);
}
/**
* Learn whether to cache collections. Default is true.
* @return boolean cache flag.
*/
public synchronized boolean isCache() {
return w.isCache();
}
/**
* Add a ResourceSelector.
* @param s the ResourceSelector to add.
*/
@Override
public synchronized void add(ResourceSelector s) {
if (s == null) {
return;
}
super.add(s);
FailFast.invalidate(this);
}
/**
* Fulfill the ResourceCollection contract.
* @return an Iterator of Resources.
*/
@Override
public final synchronized Iterator iterator() {
if (isReference()) {
return getRef().iterator();
}
dieOnCircularReference();
return w.iterator();
}
/**
* Fulfill the ResourceCollection contract.
* @return number of elements as int.
*/
@Override
public synchronized int size() {
if (isReference()) {
return getRef().size();
}
dieOnCircularReference();
return w.size();
}
/**
* Fulfill the ResourceCollection contract.
* @return whether this is a filesystem-only resource collection.
*/
@Override
public synchronized boolean isFilesystemOnly() {
if (isReference()) {
return getRef().isFilesystemOnly();
}
dieOnCircularReference();
return w.isFilesystemOnly();
}
/**
* Format this Restrict collection as a String.
* @return the String value of this collection.
*/
@Override
public synchronized String toString() {
if (isReference()) {
return getRef().toString();
}
dieOnCircularReference();
return w.toString();
}
@Override
protected synchronized void dieOnCircularReference(Stack