Let DatabaseLiaisons know how to drop tables.

git-svn-id: https://samskivert.googlecode.com/svn/trunk@2527 6335cc39-0255-0410-8fd6-9bcaacd3b74c

src/java/com/samskivert/jdbc/BaseLiaison.java

@@ -267,6 +267,17 @@ public abstract class BaseLiaison implements DatabaseLiaison
         return true;
     }
 
+    public boolean dropTable (Connection conn, String name)
+        throws SQLException
+    {
+        if (!tableExists(conn, name)) {
+            return false;
+        }
+        executeQuery(conn, "DROP TABLE " + tableSQL(name));
+        log.info("Table '" + name + "' dropped.");
+        return true;
+    }
+
     /**
      * Create an SQL string that summarizes a column definition in that format generally
      * accepted in table creation and column addition statements, e.g.

src/java/com/samskivert/jdbc/DatabaseLiaison.java

@@ -190,6 +190,12 @@ public interface DatabaseLiaison
      */
     public boolean tableExists (Connection conn, String name) throws SQLException;
 
+    /**
+     * Drops the given table and returns true if the table exists, else returns false.
+     * <em>Note:</em> the table name is case sensitive.
+     */
+    public boolean dropTable (Connection conn, String name) throws SQLException;
+    
     /**
      * Returns the proper SQL to identify a table. Some databases require table names to be quoted.
      */