Added a loadByExample() variant that takes a field mask.

git-svn-id: https://samskivert.googlecode.com/svn/trunk@1682 6335cc39-0255-0410-8fd6-9bcaacd3b74c
2005-08-01 21:18:27 +00:00
parent c099fb97bb
commit 39936ac7d4
1 changed files with 18 additions and 0 deletions
@@ -122,6 +122,24 @@ public abstract class JORARepository extends SimpleRepository
        });
    }

+    /**
+     * Loads a single object from the specified table that matches the
+     * supplied example. <em>Note:</em> the query should match one or zero
+     * records, not more.
+     */
+    protected Object loadByExample (
+        final Table table, final FieldMask mask, final Object example)
+        throws PersistenceException
+    {
+        return execute(new Operation() {
+            public Object invoke (Connection conn, DatabaseLiaison liaison)
+                throws SQLException, PersistenceException
+            {
+                return table.queryByExample(example, mask).next();
+            }
+        });
+    }
+
    /**
     * First attempts to update the supplied object and if that modifies
     * zero rows, inserts the object into the specified table. The table