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Java > Open Source Codes > org > apache > cayenne > dba > hsqldb > HSQLDBSniffer


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19
20 package org.apache.cayenne.dba.hsqldb;
21
22 import java.sql.DatabaseMetaData JavaDoc;
23 import java.sql.SQLException JavaDoc;
24
25 import org.apache.cayenne.dba.DbAdapter;
26 import org.apache.cayenne.dba.DbAdapterFactory;
27
28 /**
29  * Detects HSQLDB database from JDBC metadata.
30  *
31  * @since 1.2
32  * @author Andrus Adamchik
33  */
34 public class HSQLDBSniffer implements DbAdapterFactory {
35
36     public DbAdapter createAdapter(DatabaseMetaData JavaDoc md) throws SQLException JavaDoc {
37         String JavaDoc dbName = md.getDatabaseProductName();
38         if (dbName == null || dbName.toUpperCase().indexOf("HSQL") < 0) {
39             return null;
40         }
41
42         boolean supportsSchema = false;
43         if (md.getDriverMajorVersion() < 1) {
44             supportsSchema = true;
45         }
46         else if (md.getDriverMajorVersion() == 1) {
47             if (md.getDriverMinorVersion() <= 8) {
48                 supportsSchema = true;
49             }
50             else {
51                 supportsSchema = false;
52             }
53         }
54         else {
55             supportsSchema = false;
56         }
57         
58         return supportsSchema
59             ? new HSQLDBAdapter()
60             : new HSQLDBNoSchemaAdapter();
61     }
62 }
63
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