DataPoint.java
/*
* Copyright (c) 2017, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
*
* WSO2 Inc. licenses this file to you 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.wso2.extension.siddhi.execution.streamingml.clustering.kmeans.util;
import org.wso2.siddhi.query.api.exception.SiddhiAppValidationException;
import java.io.Serializable;
import java.util.Arrays;
/**
* Object which holds the data from each event and information about centroids in terms of coordinates
*/
public class DataPoint implements Serializable {
private static final long serialVersionUID = -3694544849918946452L;
private double[] coordinates;
public double[] getCoordinates() {
if (coordinates != null) {
return coordinates.clone();
} else {
throw new SiddhiAppValidationException("No coordinates have been set. Hence null return value.");
}
}
public void setCoordinates(double[] coordinates) {
if (this.coordinates != null) {
if (this.coordinates.length == coordinates.length) {
this.coordinates = coordinates.clone();
} else {
throw new SiddhiAppValidationException("The dimensionality of the coordinate is " +
this.coordinates.length + " but the dimensionality of the received array is " +
coordinates.length);
}
} else {
this.coordinates = coordinates.clone();
}
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (!(o instanceof DataPoint)) {
return false;
}
DataPoint that = (DataPoint) o;
return Arrays.equals(getCoordinates(), that.getCoordinates());
}
@Override
public int hashCode() {
return Arrays.hashCode(getCoordinates());
}
}