Review Request 122783: Kexi queries/parser: make SUBSTR(X, Y [, Z]) built-in SQL function work

[Jarosław Staniek]

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This is an automatically generated e-mail. To reply, visit:
https://git.reviewboard.kde.org/r/122783/
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Review request for Calligra, Andrius da Costa Ribas, Friedrich W. H. Kossebau, Adam Pigg, Roman Shtemberko, Radosław Wicik, and Wojciech Kosowicz.


Bugs: 333206
    http://bugs.kde.org/show_bug.cgi?id=333206


Repository: calligra


Description
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Kexi queries/parser: make SUBSTR(X, Y [, Z]) built-in SQL function work

** While reviewing please skip sqlparser.cpp and sqlparser.h -- these are generated files **

This is a first step to make lots of functions work.
https://community.kde.org/Kexi/Plugins/Queries/SQL_Functions#Functions

For 2.9 the i18n() changes will be reverted, for master they will stay. The patch is against 2.9 for convenience of reviewers.

Details:
- add a few convenience functions to BaseExpr
- N-arg expressions: make token-to-string function support char tokens
- add KexiDBExpr_ArgumentList class ID for N-arg expressions (,,,,)
- FunctionExpr: compute type and validation for SUBSTR()
- parser: also support empty arg list "()" in functions


Diffs
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  libs/db/expression.cpp dffae8132a3f8917fa4584633369a3a5cb5dd045 
  libs/db/field.cpp 01ea956ef23ccd893dc9308031f6b422da2f79cf 
  libs/db/parser/sqlparser.h b9b22cf308b994c6566e6fe524469d6e2ee2bf0b 
  libs/db/parser/sqlparser.cpp e46a60d2171711a934d84bfb97fff2b8d63b749f 
  libs/db/parser/sqlparser.y e8418a1210af8b3409cfe16e868c5c31b9908d8a 
  libs/db/expression.h d283bf833a47e54bb21215a291183914dd53b04d 

Diff: https://git.reviewboard.kde.org/r/122783/diff/


Testing
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Tested queries such as "SELECT substr(name, 5) FROM t" with .kexi files and mysql/pgsql server connections.


File Attachments
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Detailed validation of types
  https://git.reviewboard.kde.org/media/uploaded/files/2015/03/03/64bc365b-b2cd-4768-811c-745db8546351__kexi-2.9-query-subst.png


Thanks,

Jarosław Staniek

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