001/**
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018
019package org.apache.hadoop.hdfs.web.resources;
020
021import org.apache.hadoop.fs.Path;
022
023/** The concat source paths parameter. */
024public class ConcatSourcesParam extends StringParam {
025  /** Parameter name. */
026  public static final String NAME = "sources";
027
028  public static final String DEFAULT = "";
029
030  private static final Domain DOMAIN = new Domain(NAME, null);
031
032  private static String paths2String(Path[] paths) {
033    if (paths == null || paths.length == 0) {
034      return "";
035    }
036    final StringBuilder b = new StringBuilder(paths[0].toUri().getPath());
037    for(int i = 1; i < paths.length; i++) {
038      b.append(',').append(paths[i].toUri().getPath());
039    }
040    return b.toString();
041  }
042
043  /**
044   * Constructor.
045   * @param str a string representation of the parameter value.
046   */
047  public ConcatSourcesParam(String str) {
048    super(DOMAIN, str);
049  }
050
051  public ConcatSourcesParam(Path[] paths) {
052    this(paths2String(paths));
053  }
054
055  @Override
056  public String getName() {
057    return NAME;
058  }
059
060  /** @return the absolute path. */
061  public final String[] getAbsolutePaths() {
062    final String[] paths = getValue().split(",");
063    return paths;
064  }
065}