/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF 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.apache.ignite.ml.math.impls.vector;
import org.apache.ignite.ml.math.Matrix;
import org.apache.ignite.ml.math.Vector;
import org.apache.ignite.ml.math.VectorStorage;
import org.apache.ignite.ml.math.exceptions.UnsupportedOperationException;
import org.apache.ignite.ml.math.impls.storage.vector.ConstantVectorStorage;
/**
* Constant value, read-only vector.
*/
public class ConstantVector extends AbstractReadOnlyVector {
/**
*
*/
public ConstantVector() {
// No-op.
}
/**
* @param size Vector size.
* @param val Value of the constant.
*/
public ConstantVector(int size, double val) {
super(new ConstantVectorStorage(size, val));
}
/**
*
*
*/
private ConstantVectorStorage storage() {
return (ConstantVectorStorage)getStorage();
}
/** {@inheritDoc} */
@Override public Vector copy() {
ConstantVectorStorage sto = storage();
return new ConstantVector(sto.size(), sto.constant());
}
/** {@inheritDoc} */
@Override public Vector like(int crd) {
return new ConstantVector(crd, storage().constant());
}
/** {@inheritDoc} */
@Override public Matrix likeMatrix(int rows, int cols) {
throw new UnsupportedOperationException();
}
/** {@inheritDoc} */
@Override public boolean equals(Object o) {
if (this == o)
return true;
if (o == null || getClass() != o.getClass())
return false;
ConstantVector that = (ConstantVector)o;
VectorStorage sto = getStorage();
return (sto != null ? sto.equals(that.getStorage()) : that.getStorage() == null);
}
}