1 /** 2 * JDBM LICENSE v1.00 3 * 4 * Redistribution and use of this software and associated documentation 5 * ("Software"), with or without modification, are permitted provided 6 * that the following conditions are met: 7 * 8 * 1. Redistributions of source code must retain copyright 9 * statements and notices. Redistributions must also contain a 10 * copy of this document. 11 * 12 * 2. Redistributions in binary form must reproduce the 13 * above copyright notice, this list of conditions and the 14 * following disclaimer in the documentation and/or other 15 * materials provided with the distribution. 16 * 17 * 3. The name "JDBM" must not be used to endorse or promote 18 * products derived from this Software without prior written 19 * permission of Cees de Groot. For written permission, 20 * please contact cg@cdegroot.com. 21 * 22 * 4. Products derived from this Software may not be called "JDBM" 23 * nor may "JDBM" appear in their names without prior written 24 * permission of Cees de Groot. 25 * 26 * 5. Due credit should be given to the JDBM Project 27 * (http://jdbm.sourceforge.net/). 28 * 29 * THIS SOFTWARE IS PROVIDED BY THE JDBM PROJECT AND CONTRIBUTORS 30 * ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT 31 * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND 32 * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL 33 * CEES DE GROOT OR ANY CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 34 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 35 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 36 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 37 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 38 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 39 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 40 * OF THE POSSIBILITY OF SUCH DAMAGE. 41 * 42 * Copyright 2000 (C) Cees de Groot. All Rights Reserved. 43 * Copyright 2000-2001 (C) Alex Boisvert. All Rights Reserved. 44 * Contributions are Copyright (C) 2000 by their associated contributors. 45 * 46 * $Id: Provider.java,v 1.3 2005/06/25 23:12:32 doomdark Exp $ 47 */ 48 49 package jdbm.recman; 50 51 import java.io.IOException; 52 import java.util.Properties; 53 54 import jdbm.RecordManager; 55 import jdbm.RecordManagerOptions; 56 import jdbm.RecordManagerProvider; 57 58 import jdbm.helper.MRU; 59 60 /** 61 * Provider of the default RecordManager implementation. 62 * 63 * @author <a href="mailto:boisvert@intalio.com">Alex Boisvert</a> 64 * @version $Id: Provider.java,v 1.3 2005/06/25 23:12:32 doomdark Exp $ 65 */ 66 public final class Provider 67 implements RecordManagerProvider 68 { 69 70 /** 71 * Create a default implementation record manager. 72 * 73 * @param name Name of the record file. 74 * @param options Record manager options. 75 * @throws IOException if an I/O related exception occurs while creating 76 * or opening the record manager. 77 * @throws UnsupportedOperationException if some options are not supported by the 78 * implementation. 79 * @throws IllegalArgumentException if some options are invalid. 80 */ 81 public RecordManager createRecordManager( String name, 82 Properties options ) 83 throws IOException 84 { 85 RecordManager recman; 86 String value; 87 int cacheSize; 88 89 recman = new BaseRecordManager( name ); 90 91 value = options.getProperty( RecordManagerOptions.DISABLE_TRANSACTIONS, "false" ); 92 if ( value.equalsIgnoreCase( "TRUE" ) ) { 93 ( (BaseRecordManager) recman ).disableTransactions(); 94 } 95 96 value = options.getProperty( RecordManagerOptions.CACHE_SIZE, "1000" ); 97 cacheSize = Integer.parseInt( value ); 98 99 value = options.getProperty( RecordManagerOptions.CACHE_TYPE, 100 RecordManagerOptions.NORMAL_CACHE ); 101 if ( value.equalsIgnoreCase( RecordManagerOptions.NORMAL_CACHE ) ) { 102 MRU cache = new MRU( cacheSize ); 103 recman = new CacheRecordManager( recman, cache ); 104 } else if ( value.equalsIgnoreCase( RecordManagerOptions.SOFT_REF_CACHE ) ) { 105 throw new IllegalArgumentException( "Soft reference cache not implemented" ); 106 } else if ( value.equalsIgnoreCase( RecordManagerOptions.WEAK_REF_CACHE ) ) { 107 throw new IllegalArgumentException( "Weak reference cache not implemented" ); 108 } else { 109 throw new IllegalArgumentException( "Invalid cache type: " + value ); 110 } 111 112 return recman; 113 } 114 115 116 }