/*******************************************************************************
* Copyright 2006 - 2012 Vienna University of Technology,
* Department of Software Technology and Interactive Systems, IFS
*
* 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 eu.scape_project.planning.model.measurement;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;
import javax.persistence.CascadeType;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.OneToMany;
import eu.scape_project.planning.model.values.INumericValue;
@Entity
public class Measurements implements Serializable {
private static final long serialVersionUID = -6824569989115569984L;
@Id
@GeneratedValue
private int id;
@OneToMany(cascade = CascadeType.ALL)
private List<Measurement> list = new ArrayList<Measurement>();
public void addMeasurement(Measurement measurement) {
list.add(measurement);
}
public Measurement getAverage() {
if (list.size() == 0) {
return null;
}
Measurement m = list.get(0);
if (!(m.getValue() instanceof INumericValue)) {
throw new IllegalArgumentException("cannot calculate average of nun-numeric value: " + m.getMeasureId());
}
double average = 0.0;
for (Measurement meas : list) {
INumericValue value = (INumericValue) meas.getValue();
average += value.value();
}
average = average / list.size();
Measurement measurement = new Measurement(m.getMeasureId() + ":accumulated:average(" + list.size() + ")",
average);
return measurement;
}
public int getSize() {
return list.size();
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public List<Measurement> getList() {
return list;
}
public void setList(List<Measurement> list) {
this.list = list;
}
}