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Cytoscape 3 plugin development: load a XML file
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Koen Herten  
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 More options May 4 2012, 4:22 am
From: Koen Herten <koen.her...@gmail.com>
Date: Fri, 4 May 2012 01:22:45 -0700 (PDT)
Local: Fri, May 4 2012 4:22 am
Subject: Cytoscape 3 plugin development: load a XML file
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Hi,

I am developing a plugin for Cytoscape 3. It will predict
transcription factors for a given gene set. I'm currently testing my
plugin and its working on Cytoscape 2.8.2, but I want it also
available if Cytoscape 3 is there for Cytoscape 3.
In my plugin there is an option to save the results to a XML (so it is
compatible with other programs in my lab). In Cytoscape 2.8.2 I use
XStream, but in Cytoscape 3 I get an error message:
Exception in thread "AWT-EventQueue-0"
java.lang.IllegalArgumentException: XPP3 pull parser library not
present. Specify another driver. For example: new XStream(new
DomDriver())

So, I figured out that Cytoscape 3 must have already the XStream
libary somewhere available. But when I remove my added XStream jar, I
still get the same message.

So is there a way to import XML given by the Cytoscape envirement? Or
is there another way to do it?

Thanks,

Koen


 
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Jason Montojo  
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 More options May 4 2012, 1:42 pm
From: Jason Montojo <jrr...@gmail.com>
Date: Fri, 4 May 2012 13:42:16 -0400
Local: Fri, May 4 2012 1:42 pm
Subject: Re: [Cytoscape-discuss] Cytoscape 3 plugin development: load a XML file
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Hi Koen,

How are you making your XStream JAR accessible to Cytoscape 3?  And is your
app a simplified-style app or OSGi app?

Thanks,
Jason


 
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Koen Herten  
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 More options May 7 2012, 10:14 am
From: Koen Herten <koen.her...@gmail.com>
Date: Mon, 7 May 2012 07:14:55 -0700 (PDT)
Local: Mon, May 7 2012 10:14 am
Subject: Re: Cytoscape 3 plugin development: load a XML file
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Hi Jason,

my app is a simplified-style app. For the moment I make a big jar with
my code, the XStream jar (xstream-1.4.2.jar) and a kxml jar
(kxml2-2.3.0.jar) via an ant script (fatjar plugin of eclipse).
<?xml version="1.0"?>
<project name="iRegulon_Alpha.jar" default="main" basedir=".">
    <target name="main">
        <fatjar.build output="iRegulon_Alpha-v0.5.jar">
            <fatjar.manifest manifestfile="src/iRegulon/Cytoscape-
Plugin"/>
            <fatjar.filesource path="/home/koen/workspace/iRegulon/
bin" relpath=""/>
            <fatjar.jarsource file="/home/koen/Downloads/
xstream-1.4.2.jar" relpath=""/>
            <fatjar.jarsource file="/home/koen/Downloads/
kxml2-2.3.0.jar" relpath=""/>
        </fatjar.build>
    </target>
</project>

Then i import the jar in my code:
import com.thoughtworks.xstream.XStream;

This way worked fine in Cytoscape 2.8.2.

Thanks,
Koen

On May 4, 7:42 pm, Jason Montojo <jrr...@gmail.com> wrote:


 
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Jason Montojo  
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 More options May 8 2012, 10:34 am
From: Jason Montojo <jrr...@gmail.com>
Date: Tue, 8 May 2012 10:34:47 -0400
Local: Tues, May 8 2012 10:34 am
Subject: Re: [Cytoscape-discuss] Re: Cytoscape 3 plugin development: load a XML file
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Hi Koen,

Cytoscape 3.0 provides XStream 1.3.1.  Technically, this isn't supposed to
be happening because the platform's dependencies shouldn't be visible to
app authors so we can avoid clashes like this one.  I'll open up a ticket
in our issue tracker and see if we can get this resolved soon.

In the meantime, I think you're running into issues because XStream uses
Java reflection to find a parser driver.  Cytoscape 3 runs inside an OSGi
container that uses very strict class loading rules which doesn't play
nicely with reflection.  You may need to explicitly specify a particular
ClassLoader like this:

// See
http://xstream.codehaus.org/javadoc/com/thoughtworks/xstream/converte...
alternatives
ReflectionProvider reflectionProvider = new PureJavaReflectionProvider();

HierarchicalStreamDriver driver = new KXml2Driver();
ClassLoader classLoader = YourPlugin.class.getClassLoader();

new XStream(reflectionProvider, driver, classLoader);

Also, you shouldn't be running your XML parsing code inside the AWT thread.
 That can cause the UI to freeze.  You should be doing that within the
context of a Task and hand it off to the TaskManager like this:

Task task = new AbstractTask() {
    @Override
    public void run(TaskMonitor taskMonitor) throws Exception {
        // Do XML parsing here
    }

};

adapter.getTaskManager().execute(new TaskIterator(task));

Hope this helps,
Jason


 
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