/*
* 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.matrix;
import org.apache.ignite.ml.math.Matrix;
import org.apache.ignite.ml.math.MatrixStorage;
import org.apache.ignite.ml.math.Vector;
import org.apache.ignite.ml.math.exceptions.UnsupportedOperationException;
import org.apache.ignite.ml.math.impls.storage.matrix.MatrixDelegateStorage;
/**
* Implements transposed view of the parent {@link Matrix}.
*/
public class TransposedMatrixView extends AbstractMatrix {
/** */
public TransposedMatrixView() {
//No-op.
}
/**
* @param mtx Parent matrix.
*/
public TransposedMatrixView(Matrix mtx) {
this(mtx == null ? null : mtx.getStorage());
}
/** */
private TransposedMatrixView(MatrixStorage sto) {
super(new MatrixDelegateStorage(sto, 0, 0,
sto == null ? 0 : sto.rowSize(), sto == null ? 0 : sto.columnSize()));
}
/** {@inheritDoc} */
@Override protected void storageSet(int row, int col, double v) {
super.storageSet(col, row, v);
}
/** {@inheritDoc} */
@Override protected double storageGet(int row, int col) {
return super.storageGet(col, row);
}
/** {@inheritDoc} */
@Override public int rowSize() {
return getStorage().columnSize();
}
/** {@inheritDoc} */
@Override public int columnSize() {
return getStorage().rowSize();
}
/** {@inheritDoc} */
@Override public Matrix copy() {
MatrixDelegateStorage sto = (MatrixDelegateStorage)getStorage();
return new TransposedMatrixView(sto.delegate());
}
/** {@inheritDoc} */
@Override public Matrix like(int rows, int cols) {
throw new UnsupportedOperationException();
}
/** {@inheritDoc} */
@Override public Vector likeVector(int crd) {
throw new UnsupportedOperationException();
}
}