Question: Array of String as a feature

[ISAO Isaac Saito]

Hi all,

Could anybody has a solution to the problem I describe below?

Thanks in adv,
 Isaac


- What I Want:
 set an array of String as a feature and get them


- Phenomenon:

 -- Exception occurs and application terminates after executing
System.out.print(person.getCompany_related().toArray())

 Exception in thread "main" java.lang.NullPointerException
        at org.apache.uima.cas.impl.CASImpl.ll_getFSForRef(CASImpl.java:2745)


 -- the content of variable shows "com.sun.jdi.InvocationException
occurred invoking method." after executing
person.setCompany_related(compArray).
  This can be seen by using eclipse' debug mode.


- java code

private void extractNeeFromText(String descpath, String htmlBody,
Annotation person) {
        XMLInputSource in = null;
        try {
                in = new XMLInputSource(descpath);
        } catch (IOException e) {
                e.printStackTrace();
        }
        AnalysisEngine ae = AnalysisEngineUtil.getAeInstance(in);
        ResourceSpecifier specifier = null;
        AnalysisEngine ae = null;
        try {
                specifier = UIMAFramework.getXMLParser().parseResourceSpecifier(
                                        desc);
                ae = UIMAFramework.produceAnalysisEngine(specifier);
        } catch (InvalidXMLException e) {
                e.printStackTrace();
        } catch (ResourceInitializationException e) {
                e.printStackTrace();
        }
        JCas jcas = AnalysisEngineUtil.analyzeByAnalysisEngine(ae, htmlBody);
        FSIndex index = jcas.getJFSIndexRepository().getAnnotationIndex(
                                Company.type);
        StringArray compArray = new StringArray(jcas, index.size());
        FSIterator compIter = index.iterator();
        int num_company = 0;
        while (compIter.hasNext()) {
                Company annot = (Company) compIter.next();
                compArray.set(num_company, annot.getLex());
                // TODO remove redundunt values
                num_company++;
        }
        person.setCompany_related(compArray);
        System.out.println(person.getCompany_related().toArray());
}


- type system desctiption

<?xml version="1.0" encoding="UTF-8"?>
<typeSystemDescription xmlns="http://uima.apache.org/resourceSpecifier";>
<name>Person-Wikip_TypeSystemDescriptor</name>
<description></description>
<version>1.0</version>
<vendor>ISAAC</vendor>
<imports>
<import 
location="../../tae_nee_apacheUima/desc/NamedEntityTypeSystemDescriptor.xml"/>
</imports>
<types>
<typeDescription>
<name>jp.ac.keio.dmc.context.srw.types.PersonWikip</name>
<description>w</description>
<supertypeName>uima.tcas.Annotation</supertypeName>
<features>
<featureDescription>
<name>company_related</name>
<description></description>
<rangeTypeName>uima.cas.StringArray</rangeTypeName>
</featureDescription>
</features>
</typeDescription>
</types>
</typeSystemDescription>


- Referred conversation
http://www.ibm.com/developerworks/forums/thread.jspa?threadID=129534