/*******************************************************************************
* Copyright (c) 2007 Versant Corp.
* 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:
* Markus Kuppe (mkuppe <at> versant <dot> com) - initial API and implementation
******************************************************************************/
package org.eclipse.ecf.internal.discovery;
import java.util.Arrays;
import java.util.Comparator;
import org.eclipse.core.runtime.Assert;
import org.eclipse.ecf.discovery.identity.IServiceTypeID;
public class ServiceTypeComparator implements Comparator {
/*
* (non-Javadoc)
*
* @see java.util.Comparator#compare(java.lang.Object, java.lang.Object)
*/
public int compare(final Object object1, final Object object2) {
Assert.isNotNull(object1);
Assert.isNotNull(object2);
if (object1 == object2) {
return 0;
}
if (object1.equals(object2)) {
return 0;
}
if (object1 instanceof IServiceTypeID
&& object2 instanceof IServiceTypeID) {
final IServiceTypeID type1 = (IServiceTypeID) object1;
final IServiceTypeID type2 = (IServiceTypeID) object2;
final String name1 = type1.getNamingAuthority();
final String name2 = type2.getNamingAuthority();
if (!name1.equals("*") && !name2.equals("*") //$NON-NLS-1$ //$NON-NLS-2$
&& !name1.equals(name2)) {
return -1;
}
final String[] services1 = type1.getServices();
final String[] services2 = type2.getServices();
if (!services1[0].equals("*") && !services2[0].equals("*") //$NON-NLS-1$ //$NON-NLS-2$
&& !Arrays.equals(services1, services2)) {
return -1;
}
final String[] protocols1 = type1.getProtocols();
final String[] protocols2 = type2.getProtocols();
if (!protocols1[0].equals("*") && !protocols2[0].equals("*") //$NON-NLS-1$ //$NON-NLS-2$
&& !Arrays.equals(protocols1, protocols2)) {
return -1;
}
final String[] scopes1 = type1.getScopes();
final String[] scopes2 = type2.getScopes();
if (!scopes1[0].equals("*") && !scopes2[0].equals("*") //$NON-NLS-1$ //$NON-NLS-2$
&& !Arrays.equals(scopes1, scopes2)) {
return -1;
}
return 0;
}
return -1;
}
}