indexer-core/src/main/java/org/apache/maven/index/ArtifactAvailability.java

/*
 * 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.maven.index;

/**
 * Enumeration provides values indicating artifact availability
 */
public enum ArtifactAvailability {
    /**
     * Artifact is not present locally
     */
    NOT_PRESENT(0),

    /**
     * Artifact is present locally
     */
    PRESENT(1),

    /**
     * Artifact is not available
     */
    NOT_AVAILABLE(2);

    private final int n;

    ArtifactAvailability(int n) {
        this.n = n;
    }

    @Override
    public String toString() {
        return Integer.toString(n);
    }

    public static ArtifactAvailability fromString(String s) {
        try {
            switch (Integer.parseInt(s)) {
                case 1:
                    return PRESENT;
                case 2:
                    return NOT_AVAILABLE;
                default:
                    return NOT_PRESENT;
            }
        } catch (NumberFormatException ex) {
            return NOT_PRESENT;
        }
    }
}