DBGeneratorDefaults


1   package org.objectstyle.cayenne.modeler.pref;
2   
3   import org.objectstyle.cayenne.PersistenceState;
4   import org.objectstyle.cayenne.access.DbGenerator;
5   import org.objectstyle.cayenne.dba.DbAdapter;
6   
7   public class DBGeneratorDefaults extends _DBGeneratorDefaults {
8   
9       /**
10       * Updates its state to provide reasonable defaults for agiven adapter.
11       */
12      public void adjustForAdapter(DbAdapter adapter) {
13          if (!adapter.supportsFkConstraints()
14                  && booleanForBooleanProperty(CREATE_FK_PROPERTY)) {
15              setCreateFK(Boolean.FALSE);
16          }
17      }
18  
19      /**
20       * Updates DbGenerator settings, consulting its own state.
21       */
22      public void configureGenerator(DbGenerator generator) {
23          generator
24                  .setShouldCreateFKConstraints(booleanForBooleanProperty(CREATE_FK_PROPERTY));
25          generator.setShouldCreatePKSupport(booleanForBooleanProperty(CREATE_PK_PROPERTY));
26          generator
27                  .setShouldCreateTables(booleanForBooleanProperty(CREATE_TABLES_PROPERTY));
28          generator.setShouldDropPKSupport(booleanForBooleanProperty(DROP_PK_PROPERTY));
29          generator.setShouldDropTables(booleanForBooleanProperty(DROP_TABLES_PROPERTY));
30      }
31  
32      public void setPersistenceState(int persistenceState) {
33  
34          // init defaults on insert...
35          if (this.persistenceState == PersistenceState.TRANSIENT
36                  && persistenceState == PersistenceState.NEW) {
37              setCreateFK(Boolean.TRUE);
38              setCreatePK(Boolean.TRUE);
39              setCreateTables(Boolean.TRUE);
40              setDropPK(Boolean.FALSE);
41              setDropTables(Boolean.FALSE);
42          }
43          super.setPersistenceState(persistenceState);
44      }
45  
46      protected boolean booleanForBooleanProperty(String   property) {
47          Boolean   b = (Boolean  ) readProperty(property);
48          return (b != null) ? b.booleanValue() : false;
49      }
50  }
51  
52
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