DataSourceFactory


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56  package org.objectstyle.cayenne.conf;
57  
58  import javax.sql.DataSource  ;
59  
60  import org.apache.log4j.Level;
61  
62  
63  /**
64   * A pluggable factory for javax.sql.DataSource instances used by Cayenne runtime.
65   */
66  public interface DataSourceFactory {
67      
68      /**
69       * Initializes factory with the parent configuration object.
70       */
71      public void initializeWithParentConfiguration(Configuration conf);
72      
73      /** 
74       * Returns DataSource object corresponding to <code>location</code>.
75       * Concrete implementations may treat location differently - as a
76       * file path, JNDI location, etc.
77       */
78      public DataSource   getDataSource(String   location) throws Exception  ;
79      
80      /**
81       * Returns DataSource object corresponding to <code>location</code>.
82       * Uses <code>logLevel</code> level of verbosity during data source loading.
83       * Concrete implementations may treat location differently - as a
84       * file path, JNDI location, etc.
85       */
86      public DataSource   getDataSource(String   location, Level logLevel) throws Exception  ;
87  }
88
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