org.gradoop.flink.model.impl.tuples.GraphTransaction.java Source code

Introduction

Here is the source code for org.gradoop.flink.model.impl.tuples.GraphTransaction.java

Source

/*
 * This file is part of Gradoop.
 *
 * Gradoop is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Gradoop 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Gradoop. If not, see <http://www.gnu.org/licenses/>.
 */

package org.gradoop.flink.model.impl.tuples;

import com.google.common.collect.Sets;
import org.apache.flink.api.common.typeinfo.TypeInformation;
import org.apache.flink.api.java.tuple.Tuple3;
import org.apache.flink.api.java.typeutils.TypeExtractor;
import org.gradoop.common.model.impl.id.GradoopId;
import org.gradoop.common.model.impl.pojo.Edge;
import org.gradoop.common.model.impl.pojo.GraphHead;
import org.gradoop.common.model.impl.pojo.Vertex;
import org.gradoop.flink.util.GradoopFlinkConfig;

import java.util.Set;

/**
 * An encapsulated representation of a logical graph with duplicated elements.
 */
public class GraphTransaction extends Tuple3<GraphHead, Set<Vertex>, Set<Edge>> {

    /**
     * default constructor
     */
    public GraphTransaction() {
    }

    /**
     * valued constructor
     * @param graphHead graph head
     * @param vertices set of vertices
     * @param edges set of edges
     */
    public GraphTransaction(GraphHead graphHead, Set<Vertex> vertices, Set<Edge> edges) {
        setGraphHead(graphHead);
        setVertices(vertices);
        setEdges(edges);
    }

    public GraphHead getGraphHead() {
        return this.f0;
    }

    public void setGraphHead(GraphHead graphHead) {
        this.f0 = graphHead;
    }

    public Set<Vertex> getVertices() {
        return this.f1;
    }

    public void setVertices(Set<Vertex> vertices) {
        this.f1 = vertices;
    }

    public Set<Edge> getEdges() {
        return this.f2;
    }

    public void setEdges(Set<Edge> edges) {
        this.f2 = edges;
    }

    /**
     * Returns the Flink type information of a graph transaction.
     *
     * @param config Gradoop configuration
     * @return type information
     */
    public static TypeInformation<GraphTransaction> getTypeInformation(GradoopFlinkConfig config) {

        Set<Vertex> vertices = Sets.newHashSetWithExpectedSize(1);
        vertices.add(config.getVertexFactory().createVertex());

        Set<Edge> edges = Sets.newHashSetWithExpectedSize(1);
        edges.add(config.getEdgeFactory().createEdge(GradoopId.get(), GradoopId.get()));

        return TypeExtractor.getForObject(
                new GraphTransaction(config.getGraphHeadFactory().createGraphHead(), vertices, edges));
    }
}