org.gradoop.flink.algorithms.fsm.transactional.tle.pojos.Embedding.java Source code

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Here is the source code for org.gradoop.flink.algorithms.fsm.transactional.tle.pojos.Embedding.java

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/**
 * Copyright  2014 - 2018 Leipzig University (Database Research Group)
 *
 * 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.gradoop.flink.algorithms.fsm.transactional.tle.pojos;

import com.google.common.collect.Maps;

import java.util.Map;
import java.util.Set;

/**
 * Represent a subgraph embedding.
 */
public class Embedding {

    /**
     * set of vertices represented by a id-label map
     */
    private final Map<Integer, String> vertices;
    /**
     * set of edges indexed by edge identifiers
     */
    private final Map<Integer, FSMEdge> edges;

    /**
     * Constructor.
     *
     * @param vertices set of vertices
     * @param edges set of edges
     */
    public Embedding(Map<Integer, String> vertices, Map<Integer, FSMEdge> edges) {

        this.vertices = vertices;
        this.edges = edges;
    }

    /**
     * Combines this embedding with another one.
     *
     * @param that other embedding
     *
     * @return combined embedding
     */
    public Embedding combine(Embedding that) {

        Map<Integer, String> commonVertices = Maps.newHashMap(vertices);
        commonVertices.putAll(that.getVertices());

        Map<Integer, FSMEdge> commonEdges = Maps
                .newHashMapWithExpectedSize(this.edges.size() + that.getEdges().size());

        commonEdges.putAll(this.edges);
        commonEdges.putAll(that.getEdges());

        return new Embedding(commonVertices, commonEdges);
    }

    public Map<Integer, String> getVertices() {
        return vertices;
    }

    @Override
    public String toString() {
        return vertices.toString() + "|" + edges.toString();
    }

    public Map<Integer, FSMEdge> getEdges() {
        return edges;
    }

    public Set<Integer> getEdgeIds() {
        return edges.keySet();
    }

    /**
     * Deep copy method.
     *
     * @return deep copy
     */
    public Embedding deepCopy() {
        return new Embedding(Maps.newHashMap(vertices), Maps.newHashMap(edges));
    }
}