| /* |
| * Copyright 2004,2004 The Apache Software Foundation. |
| * |
| * Licensed 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.cocoon.portal.pluto.om.common; |
| |
| import java.io.IOException; |
| import java.io.ObjectInputStream; |
| import java.io.ObjectOutputStream; |
| |
| /** |
| * Wraps around the internal Object IDs. By holding both |
| * the string and the integer version of an Object ID this class |
| * helps speed up the internal processing. |
| * |
| * @author <a href="mailto:cziegeler@apache.org">Carsten Ziegeler</a> |
| * |
| * @version CVS $Id: ObjectIDImpl.java,v 1.4 2004/03/05 13:02:15 bdelacretaz Exp $ |
| */ |
| public class ObjectIDImpl implements org.apache.pluto.om.common.ObjectID, java.io.Serializable |
| { |
| |
| private String stringOID; |
| private int intOID; |
| |
| private ObjectIDImpl (int oid, String stringOID) |
| { |
| this.stringOID = stringOID; |
| intOID = oid; |
| } |
| |
| // internal methods. |
| |
| private void readObject (ObjectInputStream stream) throws IOException, ClassNotFoundException |
| { |
| intOID = stream.readInt (); |
| |
| stringOID = String.valueOf (intOID); |
| } |
| |
| private void writeObject (ObjectOutputStream stream) throws IOException |
| { |
| stream.write (intOID); |
| } |
| |
| |
| // addtional methods. |
| |
| public boolean equals (Object object) |
| { |
| boolean result = false; |
| |
| if (object instanceof ObjectIDImpl) |
| result = (intOID == ((ObjectIDImpl) object).intOID); |
| else if (object instanceof String) |
| result = stringOID.equals (object); |
| else if (object instanceof Integer) |
| result = (intOID == ((Integer)object).intValue()); |
| return (result); |
| } |
| |
| public int hashCode () |
| { |
| return (intOID); |
| } |
| |
| public String toString () |
| { |
| return (stringOID); |
| } |
| |
| public int intValue () |
| { |
| return (intOID); |
| } |
| |
| static public ObjectIDImpl createFromString(String idStr) |
| { |
| char[] id = idStr.toCharArray(); |
| int _id = 1; |
| for (int i=0; i<id.length; i++) |
| { |
| if ((i%2)==0) _id *= id[i]; |
| else _id ^= id[i]; |
| _id = Math.abs(_id); |
| } |
| return new ObjectIDImpl(_id, idStr); |
| } |
| } |