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package de.lmu.ifi.dbs.elki.data;
import de.lmu.ifi.dbs.elki.utilities.datastructures.arraylike.ArrayLikeUtil;
/*
This file is part of ELKI:
Environment for Developing KDD-Applications Supported by Index-Structures
Copyright (C) 2012
Ludwig-Maximilians-Universität München
Lehr- und Forschungseinheit für Datenbanksysteme
ELKI Development Team
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* AbstractNumberVector is an abstract implementation of FeatureVector.
*
* @author Arthur Zimek
* @param <V> the concrete type of this AbstractNumberVector
* @param <N> the type of number, this AbstractNumberVector consists of (i.e., a
* AbstractNumberVector {@code v} of type {@code V} and dimensionality
* {@code d} is an element of {@code N}<sup>{@code d}</sup>)
*/
public abstract class AbstractNumberVector<V extends AbstractNumberVector<? extends V, N>, N extends Number> implements NumberVector<V, N> {
/**
* The String to separate attribute values in a String that represents the
* values.
*/
public final static String ATTRIBUTE_SEPARATOR = " ";
/**
* An Object obj is equal to this AbstractNumberVector if it is an instance of
* the same runtime class and is of the identical dimensionality and the
* values of this AbstractNumberVector are equal to the values of obj in all
* dimensions, respectively.
*
* @param obj another Object
* @return true if the specified Object is an instance of the same runtime
* class and is of the identical dimensionality and the values of this
* AbstractNumberVector are equal to the values of obj in all
* dimensions, respectively
*/
@SuppressWarnings("unchecked")
@Override
public boolean equals(Object obj) {
if(this.getClass().isInstance(obj)) {
V rv = (V) obj;
boolean equal = (this.getDimensionality() == rv.getDimensionality());
for(int i = 1; i <= getDimensionality() && equal; i++) {
equal &= this.getValue(i).equals(rv.getValue(i));
}
return equal;
}
else {
return false;
}
}
@Override
public int hashCode() {
return super.hashCode();
}
@Override
public double getMin(int dimension) {
return doubleValue(dimension);
}
@Override
public double getMax(int dimension) {
return doubleValue(dimension);
}
@Override
public byte byteValue(int dimension) {
return (byte) longValue(dimension);
}
@Override
public float floatValue(int dimension) {
return (float) doubleValue(dimension);
}
@Override
public int intValue(int dimension) {
return (int) longValue(dimension);
}
@Override
public short shortValue(int dimension) {
return (short) longValue(dimension);
}
@Override
public V newNumberVector(double[] values) {
return newNumberVector(values, ArrayLikeUtil.doubleArrayAdapter());
}
}
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