|
Ant example source code file (Difference.java)
The Difference.java source code/* * 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; import java.util.List; import java.util.HashSet; import java.util.Iterator; import java.util.ArrayList; import java.util.Collection; import org.apache.tools.ant.BuildException; import org.apache.tools.ant.types.ResourceCollection; /** * ResourceCollection representing the difference between * two or more nested ResourceCollections. * @since Ant 1.7 */ public class Difference extends BaseResourceCollectionContainer { /** * Calculate the difference of the nested ResourceCollections. * @return a Collection of Resources. */ protected Collection getCollection() { List rc = getResourceCollections(); int size = rc.size(); if (size < 2) { throw new BuildException("The difference of " + size + " resource collection" + ((size == 1) ? "" : "s") + " is undefined."); } HashSet hs = new HashSet(); ArrayList al = new ArrayList(); for (Iterator rcIter = rc.iterator(); rcIter.hasNext();) { for (Iterator r = nextRC(rcIter).iterator(); r.hasNext();) { Object next = r.next(); if (hs.add(next)) { al.add(next); } else { al.remove(next); } } } return al; } private static ResourceCollection nextRC(Iterator i) { return (ResourceCollection) i.next(); } } Other Ant examples (source code examples)Here is a short list of links related to this Ant Difference.java source code file: |
... this post is sponsored by my books ... | |
#1 New Release! |
FP Best Seller |
Copyright 1998-2021 Alvin Alexander, alvinalexander.com
All Rights Reserved.
A percentage of advertising revenue from
pages under the /java/jwarehouse
URI on this website is
paid back to open source projects.