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Which Xtext JARs can be runtime dependencies for webapp? [message #1719610]

Sat, 09 January 2016 21:57

Lukasz Jader

Messages: 2
Registered: January 2016

Junior Member

Hi,
I got a task to compile and produce a WAR file from webapp,
which uses Xtext as a framework for declaring domain model classes - this needs to be done by an Ant script.

Web framework is Spring MVC but domain classes and business logic is written in Xtend/Xtext.
I've succesfully created Ant script which generates sources from .xtend files, compiles it all and packages files into a WAR.

But when I deploy WAR file on Tomcat and start the server, then the exception is thrown:
Quote:

java.lang.ClassNotFoundException: org.eclipse.xtext.xbase.lib.Procedures$Procedure1
org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1856)
org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1705)

With blind luck I found out, that adding org.eclipse.xtext.xbase.lib-2.8.4.jar to WEB-INF/lib fixes the exception, because we use ".forEach" in our .xtend files.

My questions:
1. Which Xtext/Xtend JARs could be runtime dependencies? Maybe those with ".lib" in theirs name?
2. Where is documentation for Xtext/Xtend which could describe those JARs in more detail and where I could actually found which JARs coulb be needed at runtime?

Im posting this question as a last resort, because I can't find any documentation or project which describes the same setup as mine.
Thanks in advance.

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Re: Which Xtext JARs can be runtime dependencies for webapp? [message #1719728 is a reply to message #1719610]

Mon, 11 January 2016 17:33

Christian Dietrich

Messages: 14665
Registered: July 2009

Senior Member

You can use the maven dependency plugin to analyze the deps

Twitter : @chrdietrich
Blog : https://www.dietrich-it.de

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Re: Which Xtext JARs can be runtime dependencies for webapp? [message #1724146 is a reply to message #1719610]

Sun, 21 February 2016 18:08

Lukasz Jader

Messages: 2
Registered: January 2016

Junior Member

After searching for documentation for some time, now in my WAR file I'm basically bundling all JARs that come in "Xtend Library" user library, which are:
- com.google.guava_15.0.0.v201403281430.jar
- org.eclipse.xtext.xbase.lib_2.8.4.v201508050135.jar
- org.eclipse.xtend.lib_2.8.4.v201508050135.jar
- org.eclipse.xtend.lib.macro_2.8.4.v201508050135.jar

I'm posting this so maybe someone else would benefit from this.

If you have any links to documentation which explain relation between dependencies, then let me know.

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