Bug 1079403 - Postgres Plugin - Table Vacuum Fails

Changed sql query to include the schema which the table is part of.

Also updated table component #invokeOperation method to use connection pooling support

modules/plugins/postgres/src/main/java/org/rhq/plugins/postgres/PostgresTableComponent.java

@@ -367,7 +367,17 @@ public OperationResult invokeOperation(String name, Configuration parameters) th
         Exception {
 
         if ("vacuum".equals(name)) {
-            DatabaseQueryUtility.executeUpdate(this, "vacuum " + getTableNameFromContext(resourceContext));
+            Connection connection = null;
+            PreparedStatement statement = null;
+            try {
+                connection = getPooledConnectionProvider().getPooledConnection();
+                statement = connection.prepareStatement("vacuum "
+                    + getFullyQualifiedTableName(getSchemaNameFromContext(resourceContext),
+                        getTableNameFromContext(resourceContext)));
+                statement.executeUpdate();
+            } finally {
+                safeClose(connection, statement);
+            }
         }
         return null;
     }