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From xwq <...@git.apache.org>
Subject [GitHub] incubator-trafodion pull request #1207: [TRAFODION-2704]close unused statmen...
Date Tue, 15 Aug 2017 17:02:45 GMT
Github user xwq commented on a diff in the pull request:

    https://github.com/apache/incubator-trafodion/pull/1207#discussion_r133243961
  
    --- Diff: dcs/src/test/jdbc_test/src/test/java/org/trafodion/jdbc_test/BatchTest.java
---
    @@ -158,38 +182,51 @@ public void testBatchInsertPkDuplicate() throws Exception {
                 }
             }
             int expectedRowCount = 8;
    +        PreparedStatement insertStmt = null;
    +        Statement selectStmt = null;
     
    -        // Start to prepare and execute the batch upsert
    -        PreparedStatement insertStmt = _conn.prepareStatement(strInsert);
    -        for(int i=0; i < 10; ++i) {
    -            insertStmt.setInt(1, idArray[i]);
    -            insertStmt.setString(2, nameArray[i]);
    -            insertStmt.addBatch();
    -        }
    -        
             try {
    -            statusArray = insertStmt.executeBatch();
    -        } catch(SQLException sqle) {
    -            assertTrue(sqle.getMessage().toUpperCase().contains("BATCH UPDATE FAILED"));

    -            SQLException e = null;
    -            e = sqle.getNextException();
    -            do {
    -                assertTrue(e.getMessage().contains("ERROR[8102] The operation is prevented
by a unique constraint"));
    -            } while((e = e.getNextException()) != null);
    +            // Start to prepare and execute the batch upsert
    +            insertStmt = _conn.prepareStatement(strInsert);
    +            for(int i=0; i < 10; ++i) {
    +                insertStmt.setInt(1, idArray[i]);
    +                insertStmt.setString(2, nameArray[i]);
    +                insertStmt.addBatch();
    +            }
    +            
    +            try {
    +                statusArray = insertStmt.executeBatch();
    +            } catch(SQLException sqle) {
    +                assertTrue(sqle.getMessage().toUpperCase().contains("BATCH UPDATE FAILED"));

    +                SQLException e = null;
    +                e = sqle.getNextException();
    +                do {
    +                    assertTrue(e.getMessage().contains("ERROR[8102] The operation is
prevented by a unique constraint"));
    +                } while((e = e.getNextException()) != null);
    +            }
    +            
    +            //assertArrayEquals(expectedStatusArray, statusArray);
    +
    +            int rowCount = 0;
    +            selectStmt = _conn.createStatement();
    +            ResultSet rs = selectStmt.executeQuery(strSelect);
    +            while(rs.next()) {
    +                System.out.println("ID = " + rs.getString(1) + ", Name = " + rs.getString(2));
    +                assertEquals(expectedIdArray[rs.getRow()-1], rs.getInt(1));
    +                assertEquals(expectedNameArray[rs.getRow()-1], rs.getString(2));
    +                rowCount++;
    +            }
    +            rs.close();
             }
    -        
    -        //assertArrayEquals(expectedStatusArray, statusArray);
    +        finally {
    +            if (selectStmt != null) {
    +                selectStmt.close();
    +            }
     
    -        int rowCount = 0;
    -        ResultSet rs = _conn.createStatement().executeQuery(strSelect);
    -        while(rs.next()) {
    -            System.out.println("ID = " + rs.getString(1) + ", Name = " + rs.getString(2));
    -            assertEquals(expectedIdArray[rs.getRow()-1], rs.getInt(1));
    -            assertEquals(expectedNameArray[rs.getRow()-1], rs.getString(2));
    -            rowCount++;
    -        }
    -        rs.close();
    -        insertStmt.close();
    +            if (insertStmt != null) {
    --- End diff --
    
    For now, if the selectStmt.close() throw an exception. it seems we don't have a good solution
to close it. 
    In the real case, when connection is closed, all the statement resource will be freed.




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