columnIndex method missing from DBXResultSet

Previous Topic Next Topic
 
classic Classic list List threaded Threaded
1 message Options
Reply | Threaded
Open this post in threaded view
|  
Report Content as Inappropriate

columnIndex method missing from DBXResultSet

Michael Roland
The columnIndex method converts a column name to a column index.

DBXResultSet has several methods for getting column information. DBXRow duplicates some of these methods. The methods in DBXRow call the corresponding methods in DBXResultSet, except for columnIndex. columnIndex is available only on DBXRow. In order to use columnIndex, you have to fetch a row from a result set. This is inconvenient if you want to get a column index for use in a loop. You have to special case the first row from the result set.

DBXResultSet contains all the column descriptions. columnIndex should be implemented on DBXResultSet and referenced from DBXRow like the other column related methods in DBXRow. That way you can get a column index before fetching any rows.


Affected versions:

Pharo 3 DBXTalk 1.4.1
Pharo 2 DBXTalk 1.3
Operation Systems: Any that DBXTalk supports.



Original method

DBXRow>>columnIndex: aString
    self resultSet columnDescriptions
        withIndexDo: [:each :index | (each name sameAs: aString)
            ifTrue: [^ index]].
    OpenDBXDriverError signal: 'A column with that name was not found'.

--------------------

Replacement methods

DBXRow>>columnIndex: aString

    ^self resultSet columnIndex: aString


DBXResultSet>>columnIndex: aString
    self columnDescriptions
        withIndexDo: [:each :index | (each name sameAs: aString)
                ifTrue: [^ index]].
    OpenDBXDriverError signal: 'A column with that name was not found'.

--
You received this message because you are subscribed to the Google Groups "DBXTalk" group.
To unsubscribe from this group and stop receiving emails from it, send an email to [hidden email].
For more options, visit https://groups.google.com/d/optout.
Loading...