All Downloads are FREE. Search and download functionalities are using the official Maven repository.

org.apache.commons.collections.collection.UnmodifiableBoundedCollection Maven / Gradle / Ivy

Go to download

Provides a single jar containing all JAITools modules which you can use instead of including individual modules in your project. Note: It does not include the Jiffle scripting language or Jiffle image operator.

There is a newer version: 1.4.0
Show newest version
/* ====================================================================
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2003-2004 The Apache Software Foundation.  All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution, if
 *    any, must include the following acknowledgement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgement may appear in the software itself,
 *    if and wherever such third-party acknowledgements normally appear.
 *
 * 4. The names "The Jakarta Project", "Commons", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact [email protected].
 *
 * 5. Products derived from this software may not be called "Apache"
 *    nor may "Apache" appear in their names without prior written
 *    permission of the Apache Software Foundation.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * .
 */
package org.apache.commons.collections.collection;

import java.util.Collection;
import java.util.Iterator;

import org.apache.commons.collections.BoundedCollection;
import org.apache.commons.collections.iterators.UnmodifiableIterator;

/**
 * UnmodifiableBoundedCollection decorates another BoundedCollection
 * to ensure it can't be altered.
 * 

* If a BoundedCollection is first wrapped in some other collection decorator, * such as synchronized or predicated, the BoundedCollection nature is lost. * The factory on this class will attempt to retrieve the bounded nature by * examining the package scope variables. * * @since Commons Collections 3.0 * @version $Revision: 1.5 $ $Date: 2004/01/14 21:43:18 $ * * @author Stephen Colebourne */ public final class UnmodifiableBoundedCollection extends AbstractCollectionDecorator implements BoundedCollection { /** * Factory method to create an unmodifiable bounded collection. * * @param coll the BoundedCollection to decorate, must not be null * @throws IllegalArgumentException if bag is null */ public static BoundedCollection decorate(BoundedCollection coll) { return new UnmodifiableBoundedCollection(coll); } /** * Factory method to create an unmodifiable bounded collection. *

* This method is capable of drilling down through up to 1000 other decorators * to find a suitable BoundedCollection. * * @param coll the BoundedCollection to decorate, must not be null * @throws IllegalArgumentException if bag is null */ public static BoundedCollection decorateUsing(Collection coll) { if (coll == null) { throw new IllegalArgumentException("The collection must not be null"); } // handle decorators for (int i = 0; i < 1000; i++) { // counter to prevent infinite looping if (coll instanceof BoundedCollection) { break; // normal loop exit } else if (coll instanceof AbstractCollectionDecorator) { coll = ((AbstractCollectionDecorator) coll).collection; } else if (coll instanceof SynchronizedCollection) { coll = ((SynchronizedCollection) coll).collection; } else { break; // normal loop exit } } if (coll instanceof BoundedCollection == false) { throw new IllegalArgumentException("The collection is not a bounded collection"); } return new UnmodifiableBoundedCollection((BoundedCollection) coll); } /** * Constructor that wraps (not copies). * * @param coll the collection to decorate, must not be null * @throws IllegalArgumentException if coll is null */ private UnmodifiableBoundedCollection(BoundedCollection coll) { super(coll); } //----------------------------------------------------------------------- public Iterator iterator() { return UnmodifiableIterator.decorate(getCollection().iterator()); } public boolean add(Object object) { throw new UnsupportedOperationException(); } public boolean addAll(Collection coll) { throw new UnsupportedOperationException(); } public void clear() { throw new UnsupportedOperationException(); } public boolean remove(Object object) { throw new UnsupportedOperationException(); } public boolean removeAll(Collection coll) { throw new UnsupportedOperationException(); } public boolean retainAll(Collection coll) { throw new UnsupportedOperationException(); } //----------------------------------------------------------------------- public boolean isFull() { return ((BoundedCollection) collection).isFull(); } public int maxSize() { return ((BoundedCollection) collection).maxSize(); } }





© 2015 - 2024 Weber Informatics LLC | Privacy Policy