/**
 * 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.falcon.metadata;

/**
 * Enumerates Relationship edge labels.
 */
public enum RelationshipLabel {

    // entity edge labels
    FEED_CLUSTER_EDGE("stored-in"),
    PROCESS_CLUSTER_EDGE("runs-on"),
    FEED_PROCESS_EDGE("input"),
    PROCESS_FEED_EDGE("output"),

    // instance edge labels
    INSTANCE_ENTITY_EDGE("instance-of"),

    // edge labels
    CLUSTER_COLO("collocated"),
    USER("owned-by"),
    GROUPS("grouped-as"),
    PIPELINES("pipeline"),

    // replication labels
    FEED_CLUSTER_REPLICATED_EDGE("replicated-to"),

    // eviction labels
    FEED_CLUSTER_EVICTED_EDGE("evicted-from");

    private final String name;

    RelationshipLabel(String name) {
        this.name = name;
    }

    public String getName() {
        return name;
    }
}