| /* |
| * Copyright (c) 2011, 2012, 2015 Eike Stepper (Berlin, Germany) and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * Eike Stepper - initial API and implementation |
| */ |
| package org.eclipse.net4j.util.collection; |
| |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.HashSet; |
| import java.util.Iterator; |
| |
| /** |
| * @author Eike Stepper |
| * @since 3.2 |
| */ |
| public class CaseInsensitiveStringSet extends HashSet<String> |
| { |
| private static final long serialVersionUID = 1L; |
| |
| public CaseInsensitiveStringSet() |
| { |
| } |
| |
| public CaseInsensitiveStringSet(Collection<? extends String> c) |
| { |
| super(c); |
| } |
| |
| public CaseInsensitiveStringSet(int initialCapacity, float loadFactor) |
| { |
| super(initialCapacity, loadFactor); |
| } |
| |
| public CaseInsensitiveStringSet(int initialCapacity) |
| { |
| super(initialCapacity); |
| } |
| |
| public boolean isLowerCase() |
| { |
| return true; |
| } |
| |
| @Override |
| public boolean contains(Object o) |
| { |
| return super.contains(convert(o)); |
| } |
| |
| @Override |
| public boolean add(String e) |
| { |
| return super.add(convert(e)); |
| } |
| |
| @Override |
| public boolean remove(Object o) |
| { |
| return super.remove(convert(o)); |
| } |
| |
| @Override |
| public boolean removeAll(Collection<?> c) |
| { |
| return super.removeAll(convert(c)); |
| } |
| |
| @Override |
| public boolean containsAll(Collection<?> c) |
| { |
| return super.containsAll(convert(c)); |
| } |
| |
| @Override |
| public boolean addAll(Collection<? extends String> c) |
| { |
| boolean modified = false; |
| Iterator<? extends String> e = c.iterator(); |
| while (e.hasNext()) |
| { |
| if (add(convert(e.next()))) |
| { |
| modified = true; |
| } |
| } |
| |
| return modified; |
| } |
| |
| @Override |
| public boolean retainAll(Collection<?> c) |
| { |
| return super.retainAll(convert(c)); |
| } |
| |
| protected String convert(Object o) |
| { |
| if (o instanceof String) |
| { |
| if (isLowerCase()) |
| { |
| return ((String)o).toLowerCase(); |
| } |
| |
| return ((String)o).toUpperCase(); |
| } |
| |
| return null; |
| } |
| |
| protected Collection<?> convert(Collection<?> c) |
| { |
| Collection<Object> list = new ArrayList<Object>(); |
| for (Iterator<?> it = c.iterator(); it.hasNext();) |
| { |
| Object o = it.next(); |
| list.add(convert(o)); |
| } |
| |
| return list; |
| } |
| } |