ch.rasc.edsutil.optimizer.graph.Node.java Source code

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Here is the source code for ch.rasc.edsutil.optimizer.graph.Node.java

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/**
 * Copyright 2013-2015 Ralph Schaer <ralphschaer@gmail.com>
 *
 * 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 ch.rasc.edsutil.optimizer.graph;

import java.util.Collections;
import java.util.HashSet;
import java.util.Set;

import org.springframework.core.io.Resource;

public class Node {

    private final Resource resource;

    private final Set<Node> edges = new HashSet<>();

    public Node(Resource resource) {
        this.resource = resource;
    }

    public void addEdge(Node edge) {
        this.edges.add(edge);
    }

    public void removeEdge(Node edge) {
        this.edges.remove(edge);
    }

    public Resource getResource() {
        return this.resource;
    }

    public Set<Node> getEdges() {
        return Collections.unmodifiableSet(this.edges);
    }

    @Override
    public String toString() {
        return "Node [" + this.resource.getDescription() + "]";
    }

    @Override
    public int hashCode() {
        final int prime = 31;
        int result = 1;

        result = prime * result + (this.resource == null ? 0 : this.resource.getDescription().hashCode());

        return result;
    }

    @Override
    public boolean equals(Object obj) {
        if (this == obj) {
            return true;
        }
        if (obj == null) {
            return false;
        }
        if (getClass() != obj.getClass()) {
            return false;
        }
        Node other = (Node) obj;
        if (this.resource == null) {
            if (other.resource != null) {
                return false;
            }
        } else if (!this.resource.getDescription().equals(other.resource.getDescription())) {
            return false;
        }

        return true;
    }

}