| /* |
| * Copyright (c) 2005, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * (C) Copyright Taligent, Inc. 1996 - All Rights Reserved |
| * (C) Copyright IBM Corp. 1996 - All Rights Reserved |
| * |
| * The original version of this source code and documentation is copyrighted |
| * and owned by Taligent, Inc., a wholly-owned subsidiary of IBM. These |
| * materials are provided under terms of a License Agreement between Taligent |
| * and Sun. This technology is protected by multiple US and International |
| * patents. This notice and attribution to Taligent may not be removed. |
| * Taligent is a registered trademark of Taligent, Inc. |
| * |
| */ |
| |
| package java.text; |
| |
| /** |
| * A RuleBasedCollationKey is a concrete implementation of CollationKey class. |
| * The RuleBasedCollationKey class is used by the RuleBasedCollator class. |
| */ |
| |
| final class RuleBasedCollationKey extends CollationKey { |
| /** |
| * Compare this RuleBasedCollationKey to target. The collation rules of the |
| * Collator object which created these keys are applied. <strong>Note:</strong> |
| * RuleBasedCollationKeys created by different Collators can not be compared. |
| * @param target target RuleBasedCollationKey |
| * @return Returns an integer value. Value is less than zero if this is less |
| * than target, value is zero if this and target are equal and value is greater than |
| * zero if this is greater than target. |
| * @see java.text.Collator#compare |
| */ |
| public int compareTo(CollationKey target) |
| { |
| int result = key.compareTo(((RuleBasedCollationKey)(target)).key); |
| if (result <= Collator.LESS) |
| return Collator.LESS; |
| else if (result >= Collator.GREATER) |
| return Collator.GREATER; |
| return Collator.EQUAL; |
| } |
| |
| /** |
| * Compare this RuleBasedCollationKey and the target for equality. |
| * The collation rules of the Collator object which created these keys are applied. |
| * <strong>Note:</strong> RuleBasedCollationKeys created by different Collators can not be |
| * compared. |
| * @param target the RuleBasedCollationKey to compare to. |
| * @return Returns true if two objects are equal, false otherwise. |
| */ |
| public boolean equals(Object target) { |
| if (this == target) return true; |
| if (target == null || !getClass().equals(target.getClass())) { |
| return false; |
| } |
| RuleBasedCollationKey other = (RuleBasedCollationKey)target; |
| return key.equals(other.key); |
| } |
| |
| /** |
| * Creates a hash code for this RuleBasedCollationKey. The hash value is calculated on the |
| * key itself, not the String from which the key was created. Thus |
| * if x and y are RuleBasedCollationKeys, then x.hashCode(x) == y.hashCode() if |
| * x.equals(y) is true. This allows language-sensitive comparison in a hash table. |
| * See the CollatinKey class description for an example. |
| * @return the hash value based on the string's collation order. |
| */ |
| public int hashCode() { |
| return (key.hashCode()); |
| } |
| |
| /** |
| * Converts the RuleBasedCollationKey to a sequence of bits. If two RuleBasedCollationKeys |
| * could be legitimately compared, then one could compare the byte arrays |
| * for each of those keys to obtain the same result. Byte arrays are |
| * organized most significant byte first. |
| */ |
| public byte[] toByteArray() { |
| |
| char[] src = key.toCharArray(); |
| byte[] dest = new byte[ 2*src.length ]; |
| int j = 0; |
| for( int i=0; i<src.length; i++ ) { |
| dest[j++] = (byte)(src[i] >>> 8); |
| dest[j++] = (byte)(src[i] & 0x00ff); |
| } |
| return dest; |
| } |
| |
| /** |
| * A RuleBasedCollationKey can only be generated by Collator objects. |
| */ |
| RuleBasedCollationKey(String source, String key) { |
| super(source); |
| this.key = key; |
| } |
| private String key = null; |
| |
| } |