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IntegrationPointComparator.java
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IntegrationPointComparator.java
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/*
* Copyright (c) 1997, 2018 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 v. 2.0, which is available at
* http://www.eclipse.org/legal/epl-2.0.
*
* This Source Code may also be made available under the following Secondary
* Licenses when the conditions for such availability set forth in the
* Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
* version 2 with the GNU Classpath Exception, which is available at
* https://www.gnu.org/software/classpath/license.html.
*
* SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
*/
package org.glassfish.admingui.plugin;
import java.io.Serializable;
import java.util.Comparator;
import org.glassfish.admingui.connector.IntegrationPoint;
/**
* <p> This class compares two {@link IntegrationPoint} Objects. See
* {@link #compare} for more details.</p>
*/
public class IntegrationPointComparator implements Comparator<IntegrationPoint>, Serializable {
/**
* <p> Protected constructor. Use {@link #getInstance()} instead.</p>
*/
protected IntegrationPointComparator() {
}
/**
* <p> Accessor for this <code>Comparator</code>.</p>
*/
public static IntegrationPointComparator getInstance() {
return _instance;
}
/**
* <p> This method compares two {@link IntegrationPoint}s. It will first
* check the <code>parentId</code>, then the <code>priority</code> if
* the <code>parentId</code>s are equal. If the priorities happen to
* be equal as well, it will compare the <code>id</code>s.</p>
*/
public int compare(IntegrationPoint ip1, IntegrationPoint ip2) {
// First check parentIds
String left = "" + ip1.getParentId();
int result = left.compareTo("" + ip2.getParentId());
if (result == 0) {
// parentIds are the same, check the priorities
result = ip1.getPriority() - ip2.getPriority();
if (result == 0) {
// priorities are the same, check the ids
left = "" + ip1.getId();
result = left.compareTo("" + ip2.getId());
if (result == 0) {
// Equal
return 0;
}
}
}
// Return the answer
return (result < 0) ? -1 : 1;
}
private static IntegrationPointComparator _instance =
new IntegrationPointComparator();
}