[TYPO3-english] tesseract

[François Suter]

Hi Nico,

> Only one (fundamental) question: can you please help me
> (and others) by briefly explaining the difference(s) with e.g. wfqbe.

The main difference is that Tesseract is directed at querying the TYPO3 
database, whereas wfqbe aims at displaying data from external databases. 
If you try to query TYPO3 tables with wfqbe it is quite some work 
because you have to add all the enable field conditions yourself and I 
don't think that it manages languages overlays either (disclaimer: I 
haven't looked at wfqbe in ages, so things may have changed in that 
regard; Mauro can certainly tell more).

Tesseract is also very flexible because it is made of components instead 
of being a single big extension. So what I said above is not exactly 
true ;-) Extension "dataquery" is designed to query the TYPO3 database. 
It will handle all enable fields, language and version overlays for 
your, even if you write SQL queries with JOINs (it does quite a bit of 
magic in the background). But you could write an extension which queries 
another database and feeds its results in the same display mechanisms 
(of which there are three, each packaged as separate extension; one uses 
"traditional" TYPO3 marker templates, one uses Fluid and one straight 
PHP). There exists one other such "data provider", extension 
"googlequery" which gathers data from a Google Search Appliance or 
Google Site Search.

Extension "datafilter" provides a very flexible filtering system. It can 
take values from many sources (GET/POST, TypoScript, etc.) and transfer 
them as conditions to the data providers. Each provider then transforms 
those abstract conditions into the syntax they use (so "dataquery" will 
transform the conditions to SQL, for example).

HTH

-- 

Francois Suter

Work: Cobweb Development Sarl - http://www.cobweb.ch

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