[wpkg-users] logical check "and"

[Nicolas Briche]

Le 2016-01-17 11:31, Stefan Pendl a écrit :
> Am 15.01.2016 um 10:56 schrieb le dahut:
>> Hello.
>> 
>> I've read :
>> http://wpkg.org/Packages.xml#Logical_Conditions
>> and :
>> http://wpkg.org/Logical_tests
>> 
>> What is the difference between :
>> 1)
>>    <check type="logical" condition="and" >
>>      <check type="uninstall" condition="versiongreaterorequal"
>> path="Adobe Flash Player .+ ActiveX.*"    value="%version_activex%" />
>>      <check type="uninstall" condition="versiongreaterorequal"
>> path="Adobe Flash Player .+ NPAPI.*"     value="%version_plugin%" />
>>    </check>
>> 
>> and :
>> 2)
>>    <check type="uninstall" condition="versiongreaterorequal" 
>> path="Adobe
>> Flash Player .+ ActiveX.*"    value="%version_activex%" />
>>    <check type="uninstall" condition="versiongreaterorequal" 
>> path="Adobe
>> Flash Player .+ NPAPI.*"     value="%version_plugin%" />
>> ?
>> 
>> For what I've understood both do the same, the two checks must return
>> True for 1) or 2) to be True.
>> 
>> So why use a "and" logical condition ?
> 
> There is no difference.
> 
> There might be some rare cases where you would need to force the AND
> condition to get the correct result.
> 
> In my opinion the AND condition is only included for completeness,
> since I have never needed it.

True on root level for simple checks; but AND is still necessary for 
more complex tests:

<ckeck or>
   <check and>
     <check />
     <check />
   </check>
   <check and>
     <check />
     <check />
   </check>
</check>


N.