/*******************************************************************************
* Copyright (c) 1998, 2015 Oracle and/or its affiliates. All rights reserved.
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0
* which accompanies this distribution.
* The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
* and the Eclipse Distribution License is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* Contributors:
* Oracle - initial API and implementation from Oracle TopLink
******************************************************************************/
package org.eclipse.persistence.tools.workbench.utility.string;
import java.io.Serializable;
/**
* Implement some behavior with calls to #getString().
*/
public abstract class AbstractStringHolder
implements StringHolder, Serializable, Cloneable, Comparable
{
protected AbstractStringHolder() {
super();
}
public abstract String getString();
public Object clone() {
try {
return super.clone();
} catch (CloneNotSupportedException ex) {
throw new InternalError();
}
}
public boolean equals(Object o) {
if ( ! (o instanceof StringHolder)) {
return false;
}
StringHolder other = (StringHolder) o;
String s = this.getString();
return (s == null) ?
(other.getString() == null)
:
s.equals(other.getString());
}
public int hashCode() {
String s = this.getString();
return (s == null) ? 0 : s.hashCode();
}
public int compareTo(Object o) {
return this.compareTo((StringHolder) o);
}
public int compareTo(StringHolder sh) {
return this.getString().compareTo(sh.getString());
}
public String toString() {
return StringTools.buildToStringFor(this, this.getString());
}
}