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    
019    package org.apache.hadoop.hdfs.web.resources;
020    
021    import org.apache.hadoop.fs.Path;
022    
023    /** The concat source paths parameter. */
024    public 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    }