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From "Finan, Sean" <Sean.Fi...@childrens.harvard.edu>
Subject RE: Problem using CPE and XMI Writer CAS Consumer [EXTERNAL]
Date Thu, 25 Jan 2018 15:35:02 GMT
Hi Manuel,

My first comment is that you are running ctakes in a somewhat “ancient” manner, or better
put, the xml descriptor workflow has been pretty much deprecated.

You should try to run ctakes 4.0.  If you are software savvy then I advise that you try the
development version that is in trunk.  You’ve probably been on the ctakes download page,
but just a reminder :

The ctakes wiki has some useful information, and the 4.0 entry is here:

To start playing with ctakes I suggest that you try to run the default clinical pipeline,
following the instructions here:

Those instructions will start the default clinical pipeline from a command line.  If you have
the development version from trunk then there is a gui available to run pipelines:

There are also many other pipeline configurations available in trunk to run more advanced
/ involved pipelines.  They are not in the 4.0 release.  The pipelines (including 4.0 default)
are all defined using the replacement for those xml descriptor files.  The replacements are
called “piper files”.

I hope that you find the pipers easier to understand and use than the old xml descriptors.

Anyway, if you run the ctakes 4.0 default clinical pipeline as outlined in the wiki page it
will use the new FileTreeReader and FileTreeXmiWriter combination.

Give it a whirl and let me know how things go.


From: Manuel Lamy [mailto:mmvpdml@gmail.com]
Sent: Thursday, January 25, 2018 9:09 AM
To: dev@ctakes.apache.org
Subject: Re: Problem using CPE and XMI Writer CAS Consumer [EXTERNAL]

Hello Sean,

First of all, thanks for your quick answer.

I'm probably making some confusion over here, so I have the following questions.

  1.  A CAS Consumer is defined by a XML file. What you are implying is that I should go to
my consumer XML (__XmiWriterCasConsumer.xml) and change it's <implementationName> tag
to 'org.apache.ctakes.core.cc.FileTreeXmiWriter' instead of 'org.apache.ctakes.core.cc.XmiWriterCasConsumer'?
Funny enough, it gives me a classNotFoundException if I do this. Would like to have your confirmation
if I'm doing the right thing please. The class is well defined in that path though.
  2.  Concerning the reader, I make the same analogy. Should I go to my descriptor and change
it's <implementationName> tag from 'org.apache.ctakes.core.cr.FilesInDirectoryCollectionReader'
to 'org.apache.ctakes.core.cr.FileTreeReader'?
I did these two things and the error is the same concerning the new consumer 'FileTreeXmiWriter',
as you can see in the first image attached to this e-mail.

I would also like to ask you another question:

       3. Why does my class 'FileTreeXmiWriter' has a lot of unresolved classes? You can see
it in the second image attached to this e-mail. I can't seem to import them right. I tried
to import the extension of this class only to check the result, and look how it solved the
import to me. 'apache' is not recognized. I'm just kinda baffled with the hierarchy defined
for this project. If you could give me a little bit of clarification in this topic and how
to solve it I would be appreciated.

Thanks for your attention! I'm really looking forward to put this to work. cTAKES seems awesome.
It just needs these little tweaks.

Best regards,


2018-01-24 22:26 GMT+00:00 Finan, Sean <Sean.Finan@childrens.harvard.edu<mailto:Sean.Finan@childrens.harvard.edu>>:
Hi Manuel,

Your image got scrubbed by a server, but the problem may have been fixed in a recent xmi writer.
 The latest xmi writer is in ctakes core and is named FileTreeXmiWriter.  One possible cause
for a problem in the writer is if the document has some unexpected character or character
combination.  A document reader should be massaging documents before they are processed and
sent to the writer.  The most recent file reader is named FileTreeReader and is also in ctakes


From: Manuel Lamy [mailto:mmvpdml@gmail.com<mailto:mmvpdml@gmail.com>]
Sent: Wednesday, January 24, 2018 5:10 PM
To: dev@ctakes.apache.org<mailto:dev@ctakes.apache.org>
Subject: Problem using CPE and XMI Writer CAS Consumer [EXTERNAL]

Hello guys,

I'm having problems running the CPE using a XMI Writer CAS Consumer. However, it works with
other consumers.


In the figure below, you can see my setup and the error I'm obtaining:

[Imagem inline 2]


Concerning logs, I'm obtaining this from Intellij:

            at org.apache.uima.collection.impl.CollectionProcessingEngine_impl.initialize(CollectionProcessingEngine_impl.java:81)
            at org.apache.uima.impl.UIMAFramework_impl._produceCollectionProcessingEngine(UIMAFramework_impl.java:438)
            at org.apache.uima.UIMAFramework.produceCollectionProcessingEngine(UIMAFramework.java:918)
            at org.apache.uima.tools.cpm.CpmPanel.startProcessing(CpmPanel.java:573)
            at org.apache.uima.tools.cpm.CpmPanel.access$000(CpmPanel.java:105)
            at org.apache.uima.tools.cpm.CpmPanel$1.run(CpmPanel.java:713)
Caused by: org.apache.uima.resource.ResourceConfigurationException
            at org.apache.uima.collection.impl.cpm.container.CPEFactory.produceIntegratedCasProcessor(CPEFactory.java:1093)
            at org.apache.uima.collection.impl.cpm.container.CPEFactory.getCasProcessors(CPEFactory.java:547)
            at org.apache.uima.collection.impl.cpm.BaseCPMImpl.init(BaseCPMImpl.java:253)
            at org.apache.uima.collection.impl.cpm.BaseCPMImpl.<init>(BaseCPMImpl.java:127)
            at org.apache.uima.collection.impl.CollectionProcessingEngine_impl.initialize(CollectionProcessingEngine_impl.java:73)
            ... 5 more
Caused by: java.lang.Exception: The component XMI Writer CAS Consumer cannot be created. (Thread
Name: Thread-5)
            ... 10 more

Attempted Solutions

I only found one guy with the same problem as me. The solution proposed in the thread, by
Sean Finan, was to change the xml of my consumer (__XmiWriterCasConsumer.xml), particularly
the content of the tag <implementationName>, from




However, this didn't work. The error is exactly the same. I'm out of ideas about what to do.
I would like to have the report of CPE in XMI, in order to read it with CVD. You can see the
thread here:


Result Expected

Running the CPE process and have outputs as XMI files.

Result Obtained

Running the CPE results in an error, specifically for the consumer __XMIWriterCasConsumer.


Do any of you guys had this problem before? Do you have a suggestion about how can it be solved?
Thanks a lot

Best regards,


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