/* | |
* Copyright 2003,2004 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.pluto.driver.core; | |
import java.io.IOException; | |
import java.io.ObjectInputStream; | |
import java.io.ObjectOutputStream; | |
import java.io.Serializable; | |
import org.apache.pluto.PortletWindowID; | |
/** | |
* 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:ddewolf@apache.org">David H. DeWolf</a> | |
* @author <a href="mailto:zheng@apache.org">ZHENG Zhong</a> | |
*/ | |
public class PortletWindowIDImpl implements PortletWindowID, Serializable { | |
// Private Member Variables ------------------------------------------------ | |
private String stringId = null; | |
private int intId; | |
// Constructor ------------------------------------------------------------- | |
/** | |
* Private constructor that prevents external instantiation. | |
* @param intId the integer ID. | |
* @param stringId the string ID. | |
*/ | |
private PortletWindowIDImpl(int intId, String stringId) { | |
this.stringId = stringId; | |
this.intId = intId; | |
} | |
// PortletWindowID Impl ---------------------------------------------------- | |
public String getStringId() { | |
return stringId; | |
} | |
// Internal Methods -------------------------------------------------------- | |
private void readObject(ObjectInputStream stream) throws IOException { | |
intId = stream.readInt(); | |
stringId = String.valueOf(intId); | |
} | |
private void writeObject(ObjectOutputStream stream) throws IOException { | |
stream.write(intId); | |
} | |
// Common Object Methods --------------------------------------------------- | |
/** | |
public boolean equals(Object object) { | |
boolean result = false; | |
if (object instanceof PortletWindowIDImpl) { | |
result = (intId == ((PortletWindowIDImpl) object).intId); | |
} else if (object instanceof String) { | |
result = stringId.equals(object); | |
} else if (object instanceof Integer) { | |
result = (intId == ((Integer) object).intValue()); | |
} | |
return (result); | |
} | |
**/ | |
public int hashCode() { | |
return intId; | |
} | |
// Additional Methods ------------------------------------------------------ | |
public int intValue() { | |
return intId; | |
} | |
/** | |
* Creates a portlet window ID instance from a string. | |
* @param stringId the string ID from which the instance is created. | |
* @return a portlet window ID instance created from the string ID. | |
*/ | |
static public PortletWindowIDImpl createFromString(String stringId) { | |
char[] id = stringId.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 PortletWindowIDImpl(_id, stringId); | |
} | |
} |