1 package org.apache.torque.adapter;
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19 import java.util.HashMap;
20 import java.util.Map;
21
22 /***
23 * This class creates different {@link org.apache.torque.adapter.DB}
24 * objects based on specified JDBC driver name.
25 *
26 * @author <a href="mailto:frank.kim@clearink.com">Frank Y. Kim</a>
27 * @author <a href="mailto:jon@latchkey.com">Jon S. Stevens</a>
28 * @author <a href="mailto:bmclaugh@algx.net">Brett McLaughlin</a>
29 * @author <a href="mailto:ralf@reswi.ruhr.de">Ralf Stranzenbach</a>
30 * @author <a href="mailto:dlr@finemaltcoding.com">Daniel Rall</a>
31 * @version $Id: DBFactory.java,v 1.35.2.2 2004/05/20 04:35:15 seade Exp $
32 */
33 public class DBFactory
34 {
35 /***
36 * JDBC driver to Torque Adapter map.
37 */
38 private static Map adapters = new HashMap(40);
39
40 /***
41 * Initialize the JDBC driver to Torque Adapter map.
42 */
43 static
44 {
45 adapters.put("com.ibm.as400.access.AS400JDBCDriver", DBDB2400.class);
46 adapters.put("COM.ibm.db2.jdbc.app.DB2Driver", DBDB2App.class);
47 adapters.put("COM.ibm.db2.jdbc.net.DB2Driver", DBDB2Net.class);
48 adapters.put("COM.cloudscape.core.JDBCDriver", DBCloudscape.class);
49 adapters.put("org.hsql.jdbcDriver", DBHypersonicSQL.class);
50 adapters.put("org.hsqldb.jdbcDriver", DBHypersonicSQL.class);
51 adapters.put("interbase.interclient.Driver", DBInterbase.class);
52 adapters.put("org.enhydra.instantdb.jdbc.idbDriver", DBInstantDB.class);
53 adapters.put("com.microsoft.jdbc.sqlserver.SQLServerDriver",
54 DBMSSQL.class);
55 adapters.put("com.jnetdirect.jsql.JSQLDriver", DBMSSQL.class);
56 adapters.put("org.gjt.mm.mysql.Driver", DBMM.class);
57 adapters.put("oracle.jdbc.driver.OracleDriver", DBOracle.class);
58 adapters.put("org.postgresql.Driver", DBPostgres.class);
59 adapters.put("com.sap.dbtech.jdbc.DriverSapDB", DBSapDB.class);
60 adapters.put("com.sybase.jdbc.SybDriver", DBSybase.class);
61 adapters.put("com.sybase.jdbc2.jdbc.SybDriver", DBSybase.class);
62 adapters.put("weblogic.jdbc.pool.Driver", DBWeblogic.class);
63 adapters.put("org.axiondb.jdbc.AxionDriver", DBAxion.class);
64 adapters.put("com.informix.jdbc.IfxDriver", DBInformix.class);
65 adapters.put("sun.jdbc.odbc.JdbcOdbcDriver", DBOdbc.class);
66
67
68 adapters.put("as400", DBDB2400.class);
69 adapters.put("db2app", DBDB2App.class);
70 adapters.put("db2net", DBDB2Net.class);
71 adapters.put("cloudscape", DBCloudscape.class);
72 adapters.put("hypersonic", DBHypersonicSQL.class);
73 adapters.put("interbase", DBInterbase.class);
74 adapters.put("instantdb", DBInstantDB.class);
75 adapters.put("mssql", DBMSSQL.class);
76 adapters.put("mysql", DBMM.class);
77 adapters.put("oracle", DBOracle.class);
78 adapters.put("postgresql", DBPostgres.class);
79 adapters.put("sapdb", DBSapDB.class);
80 adapters.put("sybase", DBSybase.class);
81 adapters.put("weblogic", DBWeblogic.class);
82 adapters.put("axion", DBAxion.class);
83 adapters.put("informix", DBInformix.class);
84 adapters.put("odbc", DBOdbc.class);
85 adapters.put("msaccess", DBOdbc.class);
86
87 adapters.put("", DBNone.class);
88 }
89
90 /***
91 * Creates a new instance of the Torque database adapter associated
92 * with the specified JDBC driver or adapter key.
93 *
94 * @param driver The fully-qualified name of the JDBC driver to
95 * create a new adapter instance for or a shorter form adapter key.
96 * @return An instance of a Torque database adapter.
97 * @throws InstantiationException throws if the JDBC driver could not be
98 * instantiated
99 */
100 public static DB create(String driver)
101 throws InstantiationException
102 {
103 Class adapterClass = (Class) adapters.get(driver);
104
105 if (adapterClass != null)
106 {
107 try
108 {
109 DB adapter = (DB) adapterClass.newInstance();
110
111 return adapter;
112 }
113 catch (IllegalAccessException e)
114 {
115 throw new InstantiationException(
116 "Could not instantiate adapter for JDBC driver: "
117 + driver
118 + ": Assure that adapter bytecodes are in your classpath");
119 }
120 }
121 else
122 {
123 throw new InstantiationException(
124 "Unknown JDBC driver: "
125 + driver
126 + ": Check your configuration file");
127 }
128 }
129 }