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/*******************************************************************************
* Copyright (c) 2004 Composent, Inc. 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: Composent, Inc. - initial API and implementation
******************************************************************************/
package org.eclipse.ecf.core.identity;
import org.eclipse.core.runtime.Assert;
/**
* Base class for ID implementation classes
*
* Extensions for the <b>org.eclipse.ecf.namespace</b> extension point that
* expose new Namespace subclasses and their own ID implementations are
* recommended (but not required) to use this class as a superclass.
*
*/
public abstract class BaseID implements ID {
private static final long serialVersionUID = -6242599410460002514L;
Namespace namespace;
protected BaseID() {
}
protected BaseID(Namespace namespace) {
Assert.isNotNull(namespace, "namespace cannot be null"); //$NON-NLS-1$
this.namespace = namespace;
}
/*
* (non-Javadoc)
*
* @see java.lang.Comparable#compareTo(T)
*/
public int compareTo(Object o) {
Assert.isTrue(o != null && o instanceof BaseID,
"incompatible types for compare"); //$NON-NLS-1$
return namespace.getCompareToForObject(this, (BaseID) o);
}
/*
* (non-Javadoc)
*
* @see java.lang.Object#equals(java.lang.Object)
*/
public boolean equals(Object o) {
if (o == null)
return false;
if (!(o instanceof BaseID)) {
return false;
}
return namespace.testIDEquals(this, (BaseID) o);
}
/*
* (non-Javadoc)
*
* @see org.eclipse.ecf.core.identity.ID#getName()
*/
public String getName() {
return namespace.getNameForID(this);
}
/*
* (non-Javadoc)
*
* @see org.eclipse.ecf.core.identity.ID#getNamespace()
*/
public Namespace getNamespace() {
return namespace;
}
/*
* (non-Javadoc)
*
* @see java.lang.Object#hashCode()
*/
public int hashCode() {
return namespace.getHashCodeForID(this);
}
/*
* (non-Javadoc)
*
* @see org.eclipse.ecf.core.identity.ID#toExternalForm()
*/
public String toExternalForm() {
return namespace.toExternalForm(this);
}
protected abstract int namespaceCompareTo(BaseID o);
protected abstract boolean namespaceEquals(BaseID o);
protected abstract String namespaceGetName();
protected abstract int namespaceHashCode();
protected String namespaceToExternalForm() {
return namespace.getScheme() + Namespace.SCHEME_SEPARATOR
+ namespaceGetName();
}
/*
* (non-Javadoc)
*
* @see org.eclipse.core.runtime.IAdaptable#getAdapter(java.lang.Class)
*/
public Object getAdapter(Class clazz) {
return null;
}
}
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