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    1   /**
    2    * Copyright (c) 2002-2011 "Neo Technology,"
    3    * Network Engine for Objects in Lund AB [http://neotechnology.com]
    4    *
    5    * This file is part of Neo4j.
    6    *
    7    * Neo4j is free software: you can redistribute it and/or modify
    8    * it under the terms of the GNU General Public License as published by
    9    * the Free Software Foundation, either version 3 of the License, or
    10   * (at your option) any later version.
    11   *
    12   * This program is distributed in the hope that it will be useful,
    13   * but WITHOUT ANY WARRANTY; without even the implied warranty of
    14   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    15   * GNU General Public License for more details.
    16   *
    17   * You should have received a copy of the GNU General Public License
    18   * along with this program.  If not, see <http://www.gnu.org/licenses/>.
    19   */
    20  package org.neo4j.server.rest.domain;
    21
    22  import java.net.URI;
    23  import java.util.ArrayList;
    24  import java.util.regex.Matcher;
    25  import java.util.regex.Pattern;
    26
    27  // FIXME: remove this class? only used from test case
    28  public class UriToDatabaseMatcher {
    29
    30  	private static ArrayList<Tuple> tuples = new ArrayList<Tuple>();
    31
    32  	public GraphDatabaseName lookup(URI requestUri) {
    33
    34  		for(int i = 0; i < tuples.size(); i ++) {
    35  			Tuple t = tuples.get(i);
    36
    37  			// Matchers aren't thread-safe, so they have to be created per-request
    38  			Matcher matcher = t.pattern.matcher(requestUri.getPath());
    39
    40  			if (matcher.matches()) {
    41  				return t.graphDatabaseName;
    42  			}
    43  		}
    44
    45  		return GraphDatabaseName.NO_NAME;
    46  	}
    47
    48  	/**
    49  	 * Adds a mapping the given database using the default URI (/{database_name})
    50  	 * @param databaseName
    51  	 */
    52  	public void add(GraphDatabaseName databaseName) {
    53  		// Patterns are thread safe and immutable, so compile them once only
    54  		tuples.add(new Tuple(Pattern.compile("^.*" + databaseName.getName() + ".*$"), databaseName));
    55  	}
    56
    57  	@Override
    58      public String toString() {
    59
    60  		StringBuilder sb = new StringBuilder();
    61  		for(int i = tuples.size() -1; i >=0; i--) {
    62  			Tuple t = tuples.get(i);
    63
    64  			sb.append(t);
    65
    66  		}
    67
    68  		return sb.toString();
    69
    70  	}
    71
    72  	private static class Tuple {
    73  		public GraphDatabaseName graphDatabaseName;
    74  		public Pattern pattern;
    75
    76  		public Tuple(Pattern pattern, GraphDatabaseName graphDatabaseName) {
    77  			this.pattern = pattern;
    78  			this.graphDatabaseName = graphDatabaseName;
    79
    80  		}
    81
    82  		@Override
    83          public String toString() {
    84  			return pattern.toString() + " => " + graphDatabaseName + System.getProperty("line.separator");
    85  		}
    86  	}
    87  }