DbAdapterFactory


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19  
20  package org.apache.cayenne.dba;
21  
22  import java.sql.DatabaseMetaData  ;
23  import java.sql.SQLException  ;
24  
25  /**
26   * Defines a conditional factory for a specific DbAdapter. Note that the factory can
27   * potentially return different (or differently configured) DbAdapters for the same
28   * database based on version information and other metadata.
29   * 
30   * @since 1.2
31   * @author Andrus Adamchik
32   */
33  public interface DbAdapterFactory {
34  
35      /**
36       * Returns an instance of DbAdapter if the factory detects that it knows how to handle
37       * the database. Returns null if the database is not known to the factory, thus
38       * allowing multiple factories to be chained.
39       */
40      DbAdapter createAdapter(DatabaseMetaData   md) throws SQLException  ;
41  }
42
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