| /* |
| * 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.structures; |
| |
| import java.io.Externalizable; |
| import java.io.IOException; |
| import java.io.ObjectInput; |
| import java.io.ObjectOutput; |
| import java.io.Serializable; |
| import org.apache.ignite.ml.math.exceptions.math.IndexException; |
| import org.apache.ignite.ml.math.primitives.vector.Vector; |
| |
| /** Class to keep one observation in dataset. This is a base class for labeled and unlabeled rows. */ |
| public class DatasetRow<V extends Vector> implements Externalizable { |
| /** Vector. */ |
| protected V vector; |
| |
| /** |
| * Default constructor (required by Externalizable). |
| */ |
| public DatasetRow() { |
| } |
| |
| /** */ |
| public DatasetRow(V vector) { |
| this.vector = vector; |
| } |
| |
| /** |
| * Get the vector. |
| * |
| * @return Vector. |
| */ |
| public V features() { |
| return vector; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public boolean equals(Object o) { |
| if (this == o) |
| return true; |
| if (o == null || getClass() != o.getClass()) |
| return false; |
| |
| DatasetRow vector1 = (DatasetRow)o; |
| |
| return vector != null ? vector.equals(vector1.vector) : vector1.vector == null; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public int hashCode() { |
| return vector != null ? vector.hashCode() : 0; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public void writeExternal(ObjectOutput out) throws IOException { |
| out.writeObject(vector); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException { |
| vector = (V)in.readObject(); |
| } |
| |
| /** |
| * Gets cardinality of dataset row (maximum number of the elements). |
| * |
| * @return This dataset row's cardinality. |
| */ |
| public int size() { |
| return vector.size(); |
| } |
| |
| /** |
| * Gets the value at specified index. |
| * |
| * @param idx DatasetRow index. |
| * @return DatasetRow value. |
| * @throws IndexException Throw if index is out of bounds. |
| */ |
| public double get(int idx) { |
| return vector.get(idx); |
| } |
| |
| /** |
| * Gets the value at specified index. |
| * |
| * @param idx DatasetRow index. |
| * @return DatasetRow value. |
| * @throws IndexException Throw if index is out of bounds. |
| */ |
| public Serializable getRaw(int idx) { |
| return vector.getRaw(idx); |
| } |
| |
| /** |
| * Sets value. |
| * |
| * @param idx Dataset row index to set value at. |
| * @param val Value to set. |
| * @throws IndexException Throw if index is out of bounds. |
| */ |
| public void set(int idx, double val) { |
| vector.set(idx, val); |
| } |
| |
| /** */ |
| public V getVector() { |
| return vector; |
| } |
| } |