We struggled with this as well. The key is to provide the TypeSystem
along with the CAS, especially when serializing.
Here we are writing it out:
// Serialziation with type system
CASMgr casMgr = jCas.getCasImpl();
CASCompleteSerializer casCompleteSerializer =
Serialization.serializeCASComplete(casMgr);
outputObjectStream.writeObject(casCompleteSerializer);
Here we are reading it in:
// deSerialization with type system
Object inputObj = inputObjectStream.readObject();
CASCompleteSerializer casCompleteSerializer = null;
if (inputObj instanceof CASCompleteSerializer) {
casCompleteSerializer = (CASCompleteSerializer) inputObj;
} else {
throw new IOException("Deserialized Object is not an
instance of CASCompleteSerializer");
}
JCas jCas = JCasFactory.createJCas();
CASMgr casMgr = jCas.getCasImpl();
Serialization.deserializeCASComplete(casCompleteSerializer,
casMgr);
Hope this helps!
b
On 5/13/14 8:23 AM, "Alexandre Patry" <[email protected]> wrote:
>Hi Tiziano,
>
>On 13/05/2014 09:55, Tiziano Lorenzetti wrote:
>> Dear all,
>> I'm new to UIMA and I'm trying to develope an annotator that creates
>> dinamically a type system with serveral feature structure.
>> To accomplish this, the annotator does:
>>
>> ...
>> TypeSystemDescription tsd =
>> TypeSystemDescriptionFactory.createTypeSystemDescription(new String[0]);
>> tsd.addType("it.uniroma2.art.ExcelAnnotation", "",
>>"uima.tcas.Annotation");
>> TypeDescription type = tsd.getType("it.uniroma2.art.ExcelAnnotation");
>> type.addFeature("newUIMAFeature", "", "uima.cas.String");
>> ...
>>
>> In another annotator, I try to access this type system and its features
>>in
>> this way:
>>
>> TypeSystem ts = aCAS.getTypeSystem();
>> Iterator<Type> types = ts.getTypeIterator();
>> Iterator<Feature> features = ts.getFeatures();
>>
>> but neither the type system and its features are present. How could I
>>reach
>> my goal?
>How do you create your CAS? I guess the types should be found if you
>create it using:
>
>CAS aCAS = CasCreationUtils.createCas(typeSystemDescription, null, null);
>
>Hope this help,
>
>Alexandre
>
>--
>Alexandre Patry, Ph.D
>Chercheur / Researcher
>http://KeaText.com
>
