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Drools Planner optimizes automated planning by combining metaheuristic search algorithms with rule
engine powered score calculation. This is the drools-planner-examples module which contains examples on how to use
Drools Planner.
/*
* Copyright 2010 JBoss Inc
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.drools.planner.examples.pas.solver.move;
import java.util.Collection;
import java.util.Collections;
import org.apache.commons.lang.ObjectUtils;
import org.apache.commons.lang.builder.EqualsBuilder;
import org.apache.commons.lang.builder.HashCodeBuilder;
import org.drools.WorkingMemory;
import org.drools.FactHandle;
import org.drools.planner.core.localsearch.decider.acceptor.tabu.TabuPropertyEnabled;
import org.drools.planner.core.move.Move;
import org.drools.planner.examples.pas.domain.Bed;
import org.drools.planner.examples.pas.domain.BedDesignation;
public class BedChangeMove implements Move, TabuPropertyEnabled {
private BedDesignation bedDesignation;
private Bed toBed;
public BedChangeMove(BedDesignation bedDesignation, Bed toBed) {
this.bedDesignation = bedDesignation;
this.toBed = toBed;
}
public boolean isMoveDoable(WorkingMemory workingMemory) {
return !ObjectUtils.equals(bedDesignation.getBed(), toBed);
}
public Move createUndoMove(WorkingMemory workingMemory) {
return new BedChangeMove(bedDesignation, bedDesignation.getBed());
}
public void doMove(WorkingMemory workingMemory) {
FactHandle factHandle = workingMemory.getFactHandle(bedDesignation);
bedDesignation.setBed(toBed);
workingMemory.update(factHandle, bedDesignation);
}
public Collection getTabuProperties() {
return Collections.singletonList(bedDesignation);
}
public boolean equals(Object o) {
if (this == o) {
return true;
} else if (o instanceof BedChangeMove) {
BedChangeMove other = (BedChangeMove) o;
return new EqualsBuilder()
.append(bedDesignation, other.bedDesignation)
.append(toBed, other.toBed)
.isEquals();
} else {
return false;
}
}
public int hashCode() {
return new HashCodeBuilder()
.append(bedDesignation)
.append(toBed)
.toHashCode();
}
public String toString() {
return bedDesignation + " => " + toBed;
}
}