This page (revision-90) was last changed on 24-Feb-2016 11:06 by Albrecht Striffler

This page was created on 20-Nov-2012 15:45 by UnknownAuthor

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Page revision history

Version Date Modified Size Author Changes ... Change note
90 24-Feb-2016 11:06 9 KB Albrecht Striffler to previous
89 15-May-2014 09:33 9 KB Volker Belli to previous | to last
88 15-May-2014 09:32 9 KB Volker Belli to previous | to last
87 15-May-2014 09:30 9 KB Volker Belli to previous | to last
86 21-Jun-2013 15:09 8 KB Jochen Reutelshöfer to previous | to last
85 21-Jun-2013 15:08 8 KB Jochen Reutelshöfer to previous | to last
84 21-Dec-2012 16:15 7 KB Jochen Reutelshöfer to previous | to last
83 21-Dec-2012 16:14 7 KB Jochen Reutelshöfer to previous | to last
82 18-Dec-2012 17:47 7 KB Alex Legler to previous | to last Fix Image link URL
81 17-Dec-2012 21:33 7 KB CarstenWasner to previous | to last

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!!Getting Started
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!!Getting Started
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! Why cannot my JUnit tests be executed?
If the message appears 'dependencies/output.txt not found' read further in this [howto|How-To Initialize Plugin Manager for JUnit Tests].
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This issue is caused by an outdated JDK. Please update your JDK to the [latest version of Java 6 | http://www.oracle.com/technetwork/java/javaee/downloads/index.html].
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This issue is caused by an outdated JDK. Please update your JDK to the [latest version | http://www.oracle.com/technetwork/java/javaee/downloads/index.html].
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! INFO: ERROR: Failed to create a Wiki engine: JSPWiki: Unable to load and setup properties from jspwiki.properties.
This is a missleading message display caused by unprecise error handling within jspwiki initialization code. The try-catch does not only include reading of the jspwiki.properties file, but also initialization of plugins/filters, i.e. also entire initialisiation of KnowWE. If you have recently changed code of KnowWE or a KnowWE-Plugin this error __most likely__ has __nothing__ to do with the jspwiki.properties file. It can be any kind of exception happening during KnowWE initialization. After the ''Unable to load and setup properties from jspwiki.properties'' the ''e.getMessage()'' of the actual exception is shown (without stack-trace unfortunately). __Tipp:__ Check the message string to guess what kind of exception it might have been; Consider your latest code changes; if nothing helps start debugging, e.g. in ''Environment.initInstance()''
! Are d3web's Session objects thread-safe for multi-threaded environments?
In general a single d3web session is not thread-safe for write access. Reading contents from the same session with multiple threads is ok. But having an applications where multiple threads simultaneously read/write to a session, they need to be synchronized. Even if there is only one thread that writes to the session, it need to be synchronized with all reading threads. By convention, in d3web this should be done using the "Session"-Object as the semaphore for synchronization. This makes sure that your code will be interoperable with all other applications code (also considering this convention), without being in danger to create deadlocks.
%%prettify
{{{
// put your non d3web-code here
// ...
synchronized (session) {
// your read/write access to the session or blackboard or ... here
// ...
}
}}}
/%
This page (revision-90) was last changed on 24-Feb-2016 11:06 by Albrecht Striffler Top