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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.nurserostering.solver.move;
import java.util.Arrays;
import java.util.Collection;
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.planner.core.localsearch.decider.acceptor.tabu.TabuPropertyEnabled;
import org.drools.planner.core.move.Move;
import org.drools.planner.examples.nurserostering.domain.ShiftAssignment;
import org.drools.planner.examples.nurserostering.domain.Employee;
public class ShiftAssignmentSwitchMove implements Move, TabuPropertyEnabled {
private ShiftAssignment leftShiftAssignment;
private ShiftAssignment rightShiftAssignment;
public ShiftAssignmentSwitchMove(ShiftAssignment leftShiftAssignment, ShiftAssignment rightShiftAssignment) {
this.leftShiftAssignment = leftShiftAssignment;
this.rightShiftAssignment = rightShiftAssignment;
}
public boolean isMoveDoable(WorkingMemory workingMemory) {
return !ObjectUtils.equals(leftShiftAssignment.getEmployee(), rightShiftAssignment.getEmployee());
}
public Move createUndoMove(WorkingMemory workingMemory) {
return new ShiftAssignmentSwitchMove(rightShiftAssignment, leftShiftAssignment);
}
public void doMove(WorkingMemory workingMemory) {
Employee oldLeftEmployee = leftShiftAssignment.getEmployee();
Employee oldRightEmployee = rightShiftAssignment.getEmployee();
NurseRosteringMoveHelper.moveEmployee(workingMemory, leftShiftAssignment, oldRightEmployee);
NurseRosteringMoveHelper.moveEmployee(workingMemory, rightShiftAssignment, oldLeftEmployee);
}
public Collection getTabuProperties() {
return Arrays.asList(leftShiftAssignment, rightShiftAssignment);
}
public boolean equals(Object o) {
if (this == o) {
return true;
} else if (o instanceof ShiftAssignmentSwitchMove) {
ShiftAssignmentSwitchMove other = (ShiftAssignmentSwitchMove) o;
return new EqualsBuilder()
.append(leftShiftAssignment, other.leftShiftAssignment)
.append(rightShiftAssignment, other.rightShiftAssignment)
.isEquals();
} else {
return false;
}
}
public int hashCode() {
return new HashCodeBuilder()
.append(leftShiftAssignment)
.append(rightShiftAssignment)
.toHashCode();
}
public String toString() {
return leftShiftAssignment + " <=> " + rightShiftAssignment;
}
}