Updatable result sets: the key columns can now be updated.

h2/src/main/org/h2/jdbc/JdbcResultSet.java

@@ -2827,7 +2827,10 @@ public class JdbcResultSet extends TraceObject implements ResultSet {
             checkOnValidRow();
             if (updateRow != null) {
                 UpdatableRow row = getUpdatableRow();
-                Value[] current = result.currentRow();
+                Value[] current = new Value[columnCount];
+                for (int i = 0; i < updateRow.length; i++) {
+                    current[i] = get(i + 1);
+                }                
                 row.updateRow(current, updateRow);
                 for (int i = 0; i < updateRow.length; i++) {
                     if (updateRow[i] == null) {

h2/src/test/org/h2/test/jdbc/TestResultSet.java

@@ -55,6 +55,7 @@ public class TestResultSet extends TestBase {
         testAbsolute();
         testFetchSize();
         testOwnUpdates();
+        testUpdatePrimaryKey();
         testFindColumn();
         testSubstringPrecision();
         testColumnLength();
@@ -130,6 +131,20 @@ public class TestResultSet extends TestBase {
         stat.execute("DROP TABLE TEST");
     }
     
+    private void testUpdatePrimaryKey() throws SQLException {
+        Statement stat = conn.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE, 
+                ResultSet.CONCUR_UPDATABLE);
+        stat.execute("CREATE TABLE TEST(ID INT PRIMARY KEY, NAME VARCHAR(255))");
+        stat.execute("INSERT INTO TEST VALUES(1, 'Hello')");
+        ResultSet rs = stat.executeQuery("SELECT * FROM TEST");
+        rs.next();
+        rs.updateInt(1, 2);
+        rs.updateRow();
+        rs.updateInt(1, 3);
+        rs.updateRow();      
+        stat.execute("DROP TABLE TEST");
+    }
+    
     private void checkPrecision(int expected, String sql) throws SQLException {
         ResultSetMetaData meta = stat.executeQuery(sql).getMetaData();
         assertEquals(expected, meta.getPrecision(1));