Once again RowFilter: tension between minimal api and usability?

Hi experts,

(Yes, I'm still struggling with RowFilters ;-)

The minimal api I am referring to is comparisonType.greater: she has values before, after, equal, is not based on equality. It is complete because as before equality comparisons can be expressed by a non - logic after.

An important aspect of usability (as I see it :) is consistency: learn a dialect of lifestyle, model,... and the reuse of the incomparable contexts.) This is the model to use a RowFilter on comparable

RowFilters.compareFilter(Before, comparisonValue, index);

Of course, this model cannot be used for comparisons as "composed" comparisons:

// ease-of-use-version, can't be done
RowFilters.compareFilter(Before-And-Equal, cv, i);

// instead have to break the habit
RowFilter after = RowFilters.someFilter(After, cv, i);
RowFilters.notFilter(after);

Hmm... now in a frame I could hide the effort two lines behind a factory method

RowFilters.beforeAndEqualFilter(cv, i);

Here the type of comparison is sucked out of the parameterlist in the name of the method. For a consistent api, this plant would have to have coverage methods beforeFilter, secondary filter... etc.

An alternative approach would be to have a new comparisonType.greater (unfortunately, it's an enum - not expandable) with all the combinations and re - implement comparing filters. BTW, it is necessary in any case, it should be applicable to all the comparables.

Hmm... (incoherent?) infancy, mainly because I really can't decide me ;-) Advice, please?

Thank you
Jeanette

PS: transferred to the forum of SwingX at java.net
http://forums.Java.NET/Jive/thread.jspa?threadID=153709

Methods how did you decide to compare? For simplicity I would go with redundancy leaving the developer to decide.

Filter compareToFilter(ComparisonTypeExt type, Comparable value, int.. columns);
 Filter compareToFilter(ComparisonTypeExt type, Comparator comparator, T value, int.. columns);
Filter betweenFilter(RangeType type, Comparable from, Comparable to, int.. columns);
 Filter betweenFilter(RangeType type, Comparator comparator, T from, T to, int.. columns);
Filter containsFilter(Collection values, int... columns);

// maybe better name :) Left out "than" so it's shorter.
public enum ComparisonTypeExt { LESS, LESS_OR_EQUAL, EQUAL, NOT_EQUAL, GREATER_OR_EQUAL, GREATER }
// FROM_INCLUSIVE same effect as TO_EXCLUSIVE, etc
public enum RangeType { ALL_INCLUSIVE, FROM_INCLUSIVE, TO_INCLUSIVE, ALL_EXCLUSIVE, FROM_EXCLUSIVE, TO_EXCLUSIVE }

I think that to choose a default value: all-inclusive seems more natural ("choose a number between 1 and 10"), but inclusive makes more sense for developers (for several beaches: age groups [0-15 > [15-25 > [25-50 > [50 >]]]]) and fits indexed table/list of Java.

Standard SQL BETWEEN is all included (at least SQL92 one I found first), but implementations may not be (http://www.w3schools.com/sql/sql_between.asp).

Tags: Java

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In the vCloud Director UI, you can go to the properties of a catalog and share TWO everyone in read-only AND specific users/groups to have full control of the value. The API seems to allow to BE ReadOnly value all or specific users/groups to full control. Even when I put the two in the UI, when I do a GET with the API, if IsSharedToEveryone is set to true, the individual user/group access control settings are not displayed. They are mutually exclusive?
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Kind regards

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Perform calculations between the weeks and categories

Given this example, if I calculate the difference between each week the intention and filing to show in the lines of the plan again and again filing?

Row#     SEM     STUDENT_LEVEL     COLLEGE     PROGRAM     STATUS     Y3W2     Y3W3     Y3W4     Y3W5     Y3W6

1     40     GR     BN     BMA-SJ     14.Intend     132     132     137     139     139
2     40     GR     BN     BMA-SJ     17.Deposit     100     111     115     114     117
3     40     GR     BN     BMA-SJ     20.New Intend     0     0     0     0     0
4     40     GR     BN     BMA-SJ     21.New Deposit     0     0     0     0     0

For example, the value displayed in Col: Y3W3 line #4 deposit must be the result of line Y3W3 2 - Row 2 Y3W2. Digitally: 111 minus 100 = 11.
Tier 4 after that calculation should look like:

4     40     GR     BN     BMA-SJ     21.New Deposit     1     11     4     0     3

If the change is negative, then we would show 0.

There are also some Calc percentage within the week and the categories and between weeks and years, but if understand us this, we can hope that use to others, so we won't post the part yet.

Here's the query portion and sampling data. The sample data are summarized from the level of detail:

WITH ADMLIST AS 
(
SELECT 1 AS WEEKNO, 2009 AS YEAR,          40 AS SEM, 
    'GR' AS STUDENT_LEVEL,  'BN' AS COLLEGE, 'BMA-SJ' AS PROGRAM, 
    '14.Intend' AS STATUS,  139  AS TOT
FROM DUAL UNION ALL 
SELECT 1 , 2009, 40, 'GR', 'BN', 'BMA-SJ', '17.Deposit',    94 FROM DUAL UNION ALL 
SELECT 1 , 2009, 40, 'GR', 'BN', 'BMA-SJ', '20.New Intend',  0 FROM DUAL UNION ALL 
SELECT 1 , 2009, 40, 'GR', 'BN', 'BMA-SJ', '21.New Deposit', 0 FROM DUAL UNION ALL 
SELECT 2 , 2009, 40, 'GR', 'BN', 'BMA-SJ', '14.Intend',    132 FROM DUAL UNION ALL 
SELECT 2 , 2009, 40, 'GR', 'BN', 'BMA-SJ', '17.Deposit',   100 FROM DUAL UNION ALL 
SELECT 2 , 2009, 40, 'GR', 'BN', 'BMA-SJ', '20.New Intend',  0 FROM DUAL UNION ALL 
SELECT 2 , 2009, 40, 'GR', 'BN', 'BMA-SJ', '21.New Deposit', 0 FROM DUAL UNION ALL 
SELECT 3 , 2009, 40, 'GR', 'BN', 'BMA-SJ', '14.Intend',    132 FROM DUAL UNION ALL 
SELECT 3 , 2009, 40, 'GR', 'BN', 'BMA-SJ', '17.Deposit',   111 FROM DUAL UNION ALL 
SELECT 3 , 2009, 40, 'GR', 'BN', 'BMA-SJ', '20.New Intend',  0 FROM DUAL UNION ALL 
SELECT 3 , 2009, 40, 'GR', 'BN', 'BMA-SJ', '21.New Deposit', 0 FROM DUAL UNION ALL 
SELECT 4 , 2009, 40, 'GR', 'BN', 'BMA-SJ', '14.Intend',    137 FROM DUAL UNION ALL 
SELECT 4 , 2009, 40, 'GR', 'BN', 'BMA-SJ', '17.Deposit',   115 FROM DUAL UNION ALL 
SELECT 4 , 2009, 40, 'GR', 'BN', 'BMA-SJ', '20.New Intend',  0 FROM DUAL UNION ALL 
SELECT 4 , 2009, 40, 'GR', 'BN', 'BMA-SJ', '21.New Deposit', 0 FROM DUAL UNION ALL 
SELECT 5 , 2009, 40, 'GR', 'BN', 'BMA-SJ', '14.Intend',    139 FROM DUAL UNION ALL 
SELECT 5 , 2009, 40, 'GR', 'BN', 'BMA-SJ', '17.Deposit',   114 FROM DUAL UNION ALL 
SELECT 5 , 2009, 40, 'GR', 'BN', 'BMA-SJ', '20.New Intend',  0 FROM DUAL UNION ALL 
SELECT 5 , 2009, 40, 'GR', 'BN', 'BMA-SJ', '21.New Deposit', 0 FROM DUAL UNION ALL 
SELECT 6 , 2009, 40, 'GR', 'BN', 'BMA-SJ', '14.Intend',    139 FROM DUAL UNION ALL 
SELECT 6 , 2009, 40, 'GR', 'BN', 'BMA-SJ', '17.Deposit',   117 FROM DUAL UNION ALL 
SELECT 6 , 2009, 40, 'GR', 'BN', 'BMA-SJ', '20.New Intend',  0 FROM DUAL UNION ALL 
SELECT 6 , 2009, 40, 'GR', 'BN', 'BMA-SJ', '21.New Deposit', 0 FROM DUAL 
)
SELECT sem,
       student_level,
       college,
       program,
       status,
--       max(CASE WHEN WEEKNO=2 AND YEAR=2007 THEN TOT END) AS Y1W2,
--       max(CASE WHEN WEEKNO=3 AND YEAR=2007 THEN TOT END) AS Y1W3,
--       max(CASE WHEN WEEKNO=4 AND YEAR=2007 THEN TOT END) AS Y1W4,
--       max(CASE WHEN WEEKNO=5 AND YEAR=2007 THEN TOT END) AS Y1W5,
--       max(CASE WHEN WEEKNO=6 AND YEAR=2007 THEN TOT END) AS Y1W6,
--       max(CASE WHEN WEEKNO=2 AND YEAR=2008 THEN TOT END) AS Y2W2,
--       max(CASE WHEN WEEKNO=3 AND YEAR=2008 THEN TOT END) AS Y2W3,
--       max(CASE WHEN WEEKNO=4 AND YEAR=2008 THEN TOT END) AS Y2W4,
--       max(CASE WHEN WEEKNO=5 AND YEAR=2008 THEN TOT END) AS Y2W5,
--       max(CASE WHEN WEEKNO=6 AND YEAR=2008 THEN TOT END) AS Y2W6,
       max(CASE WHEN WEEKNO=2 AND YEAR=2009 THEN TOT END) AS Y3W2,
       max(CASE WHEN WEEKNO=3 AND YEAR=2009 THEN TOT END) AS Y3W3,
       max(CASE WHEN WEEKNO=4 AND YEAR=2009 THEN TOT END) AS Y3W4,
       max(CASE WHEN WEEKNO=5 AND YEAR=2009 THEN TOT END) AS Y3W5,
       max(CASE WHEN WEEKNO=6 AND YEAR=2009 THEN TOT END) AS Y3W6
FROM ADMLIST
GROUP BY sem,
         student_level,
         college,
         program,
         status
ORDER BY 5;

Hello

You can get the difference from one week to the next (or 0) using the analytical LAG function, like this:

GREATEST ( tot - LAG (tot) OVER ( PARTITION BY  status  -- and maybe other columns, like sem, student_level, ..., too
                                       ORDER BY      year
                      ,          weekno
                    )
       , 0
       )     AS dif

Corresponds to the data you posted really what is in your tables, or is it the result of an earlier stage?

If it's really in your tables, and then instead of select of your tables, select in a UNION of
(a) your table except the lines where status = '21.New' file
(b) your table, once again, with status ='21.New deposit "and the numbers of dif (as shown above) in the column tot.

If the data you posted is a partially digested form of your RAW files, then dif can probably be incorporated into the digestion process.

In any case, calculate dif until you rotate the data.

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I hope this helps.

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Once again RowFilter: tension between minimal api and usability?

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