--- /dev/null
+/*\r
+ \r
+ Derby - Class org.apache.derby.iapi.jdbc.EngineResultSet\r
+ \r
+ Licensed to the Apache Software Foundation (ASF) under one or more\r
+ contributor license agreements. See the NOTICE file distributed with\r
+ this work for additional information regarding copyright ownership.\r
+ The ASF licenses this file to you under the Apache License, Version 2.0\r
+ (the "License"); you may not use this file except in compliance with\r
+ the License. You may obtain a copy of the License at\r
+ \r
+ http://www.apache.org/licenses/LICENSE-2.0\r
+ \r
+ Unless required by applicable law or agreed to in writing, software\r
+ distributed under the License is distributed on an "AS IS" BASIS,\r
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r
+ See the License for the specific language governing permissions and\r
+ limitations under the License.\r
+ \r
+ */\r
+package org.apache.derby.iapi.jdbc;\r
+\r
+import java.sql.ResultSet;\r
+import java.sql.SQLException;\r
+\r
+import org.apache.derby.iapi.error.StandardException;\r
+/**\r
+ * Additional methods the embedded engine exposes on its ResultSet object\r
+ * implementations. An internal api only, mainly for the network\r
+ * server\r
+ */\r
+public interface EngineResultSet extends ResultSet {\r
+ \r
+ /**\r
+ * Is this result set from a select for update statement?\r
+ */\r
+ public boolean isForUpdate();\r
+ \r
+ /**\r
+ * Is the designated columnIndex a null data value?\r
+ * This is used by EXTDTAInputStream to get the null value without \r
+ * retrieving the underlying data value.\r
+ * @param columnIndex\r
+ * @return true if the data value at columnIndex for the current row is null \r
+ * @throws SQLException \r
+ */\r
+ public boolean isNull(int columnIndex) throws SQLException;\r
+ \r
+ /**\r
+ * Return the length of the designated columnIndex data value.\r
+ * Implementation is type dependent.\r
+ * \r
+ * @param columnIndex column to access\r
+ * @return length of data value\r
+ * @throws SQLException\r
+ * @see org.apache.derby.iapi.types.DataValueDescriptor#getLength() \r
+ */\r
+ public int getLength(int columnIndex) throws SQLException;\r
+ \r
+}\r