org.openmdx.base.accessor.rest.FlushOrder Maven / Gradle / Ivy
/*
* ====================================================================
* Project: openMDX/Core, http://www.openmdx.org/
* Description: Flush Order
* Owner: OMEX AG, Switzerland, http://www.omex.ch
* ====================================================================
*
* This software is published under the BSD license as listed below.
*
* Copyright (c) 2010, OMEX AG, Switzerland
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* * Neither the name of the openMDX team nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* ------------------
*
* This product includes software developed by other organizations as
* listed in the NOTICE file.
*/
package org.openmdx.base.accessor.rest;
import java.util.Comparator;
import org.openmdx.base.accessor.cci.DataObject_1_0;
import org.openmdx.base.naming.Path;
/**
* Flush Order
*/
public class FlushOrder implements Comparator {
/**
* Constructor
*/
protected FlushOrder(){
super();
}
/**
* A a FlushOrder instance
*/
private static final Comparator instance = new FlushOrder();
/**
* Retrieve a FlushOrder instance
*
* @return a FlushOrder instance
*/
public static Comparator getInstance(){
return FlushOrder.instance;
}
// @Override
public int compare(
DataObject_1_0 left,
DataObject_1_0 right
) {
Path leftId = left.jdoGetObjectId();
Path rightId = right.jdoGetObjectId();
//
// Deleted
//
boolean leftIsDeleted = left.jdoIsDeleted();
boolean rightIsDeleted = right.jdoIsDeleted();
if(leftIsDeleted | rightIsDeleted) {
if(leftIsDeleted & rightIsDeleted){
return -leftId.compareTo(rightId);
} else {
return leftIsDeleted ? +1 : -1;
}
}
//
// New
//
boolean leftIsNew = left.jdoIsNew();
boolean rightIsNew = right.jdoIsNew();
if(leftIsNew | rightIsNew) {
if(leftIsNew & rightIsNew) {
return +leftId.compareTo(rightId);
} else {
return leftIsNew ? +1 : -1;
}
}
//
// Dirty
//
boolean leftIsDirty = left.jdoIsDirty();
boolean rightIsDirty = right.jdoIsDirty();
if(leftIsDirty | rightIsDirty) {
if(leftIsDirty & rightIsDirty) {
return +leftId.compareTo(rightId);
} else {
return leftIsDirty ? +1 : -1;
}
}
//
// Persistent
//
boolean leftIsPersistent = left.jdoIsPersistent();
boolean rightIsPersistent = right.jdoIsPersistent();
if(leftIsPersistent | rightIsPersistent) {
if(leftIsPersistent & rightIsPersistent){
return +leftId.compareTo(rightId);
} else {
return leftIsPersistent ? +1 : -1;
}
}
//
// Transient
//
return left.jdoGetTransactionalObjectId().compareTo(right.jdoGetTransactionalObjectId());
}
}