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/*
 *
 *  * Copyright 2016 Skymind,Inc.
 *  *
 *  *    Licensed 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.deeplearning4j.nn.graph.vertex;

import lombok.AllArgsConstructor;
import lombok.EqualsAndHashCode;

import java.io.Serializable;

/**VertexIndices defines a pair of integers: the index of a vertex, and the edge number of that vertex.
 * This is used for example in {@link org.deeplearning4j.nn.graph.ComputationGraph} to define the connection structure
 * between {@link GraphVertex} objects in the graph
 */
@AllArgsConstructor
@EqualsAndHashCode
public class VertexIndices implements Serializable {

    private final int vertexIndex;
    private final int vertexEdgeNumber;


    /**Index of the vertex */
    public int getVertexIndex() {
        return this.vertexIndex;
    }

    /** The edge number. Represents the index of the output of the vertex index, OR the index of the
     * input to the vertex, depending on the context
     */
    public int getVertexEdgeNumber() {
        return this.vertexEdgeNumber;
    }

    public String toString() {
        return "VertexIndices(vertexIndex=" + this.vertexIndex + ", vertexEdgeNumber=" + this.vertexEdgeNumber + ")";
    }
}