Fix prepared statement setNull() #1365 (#1371)

* Fix prepared statement setNull() #1365

* Fix missing comment (to restart the build process)

data/org.eclipse.birt.report.data.oda.jdbc/src/org/eclipse/birt/report/data/oda/jdbc/Statement.java

@@ -750,10 +750,20 @@ public void setNull(int parameterId) throws OdaException {
 		try {
 			java.sql.ParameterMetaData pm = this.preStat.getParameterMetaData();
 			if (pm == null) {
-				this.preStat.setNull(parameterId, java.sql.Types.OTHER);
+				try {
+					this.preStat.setNull(parameterId, java.sql.Types.OTHER);
+				} catch (SQLException e) {
+					// fallback, set the null value with SQL default null type
+					this.preStat.setNull(parameterId, java.sql.Types.NULL);
+				}
 				addLog("setNull", parameterId, "null");
 			} else {
-				this.preStat.setNull(parameterId, pm.getParameterType(parameterId));
+				try {
+					this.preStat.setNull(parameterId, pm.getParameterType(parameterId));
+				} catch (SQLException e) {
+					// fallback, set the null value with SQL default null type
+					this.preStat.setNull(parameterId, java.sql.Types.NULL);
+				}
 			}
 		} catch (SQLException e) {
 			throw new JDBCException(ResourceConstants.PREPARESTATEMENT_CANNOT_SET_NULL_VALUE, e);
@@ -887,7 +897,7 @@ private void addLog(String methodName, Exception e) {
 	/**
 	 * This API is meant to execute the update/DML sql query.
 	 *
-	 * @return
+	 * @return Return the execution status
 	 * @throws OdaException
 	 */
 	public int executeUpdate() throws OdaException {