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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  }