Examples of org.apache.uima.cas.CAS

org.apache.uima.cas.CAS
Object-oriented CAS (Common Analysis System) API.
A CAS object provides the starting point for working with the CAS. It provides access to the type system, to indexes, iterators and filters (constraints). It also lets you create new annotations and other data structures. You can create a CAS object using static methods on the class {@link org.apache.uima.util.CasCreationUtils}.
The CAS object is also the container that manages multiple Subjects of Analysis or Sofas. A Sofa represents some form of an unstructured artifact that is processed in a UIMA pipeline. The Java string called the "DocumentText" used in a UIMA text processing pipeline is an example of a Sofa. A Sofa can be analyzed independently using the standard UIMA programming model or analyzed together with other Sofas utilizing the Sofa programming model extensions.
A Sofa is implemented as a built-in CAS type uima.cas.Sofa. Use {@link org.apache.uima.cas.CAS#createSofa CAS.createSofa()} to instantiate a Sofa featurestructure. The {@link SofaFS SofaFS} class provides methods to set and get the features of aSofaFS. Although Sofas are implemented as standard feature structures, generic CAS APIs must never be used to create Sofas or set their features.
Use {@link org.apache.uima.cas.CAS#getView(String)} or{@link org.apache.uima.cas.CAS#getView(SofaFS)} to obtain a view of a particular Sofa in the CAS.This view will provide access to the Sofa data (for example the document text) as well as the index repository, which contains metadata (annotations and other feature structures) about that Sofa.
Use {@link #getTypeSystem getTypeSystem()} to access the type system. With a{@link TypeSystem TypeSystem} object, you can access the {@link Type Type} and{@link Feature Feature} objects for the CAS built-in types. Note that this interface alsoprovides constants for the names of the built-in types and features.

              + JUnitExtension.getFile("FsIndexCollectionImplTest/dataPathDir").getAbsolutePath());


      // call method
      ArrayList descList = new ArrayList();
      descList.add(desc);
      CAS cas = CasCreationUtils.createCas(descList, UIMAFramework
              .getDefaultPerformanceTuningProperties(), resMgr);
      // check that imports were resolved correctly
      assertNotNull(cas.getTypeSystem().getType("DocumentStructure"));
      assertNotNull(cas.getTypeSystem().getType("NamedEntity"));
      assertNotNull(cas.getTypeSystem().getType("TestType3"));


      assertNotNull(cas.getIndexRepository().getIndex("TestIndex"));
      assertNotNull(cas.getIndexRepository().getIndex("ReverseAnnotationIndex"));
      assertNotNull(cas.getIndexRepository().getIndex("DocumentStructureIndex"));


      // check of type priority
      AnnotationFS fs1 = cas.createAnnotation(cas.getTypeSystem().getType("Paragraph"), 0, 1);
      AnnotationFS fs2 = cas.createAnnotation(cas.getTypeSystem().getType("Sentence"), 0, 1);
      assertTrue(cas.getAnnotationIndex().compare(fs1, fs2) < 0);
    } catch (Exception e) {
      JUnitExtension.handleException(e);
    }
  }

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      descList.add(tsd1);
      descList.add(tsd2);
      descList.add(indexes);
      descList.add(priorities);


      CAS cas = CasCreationUtils.createCas(descList);


      // check that type system has been installed
      TypeSystem ts = cas.getTypeSystem();
      Type supertypeHandle = ts.getType(supertype.getName());
      assertNotNull(supertypeHandle);
      assertNotNull(supertypeHandle.getFeatureByBaseName("testfeat"));
      Type subtypeHandle = ts.getType(subtype.getName());
      assertNotNull(subtypeHandle);
      assertNotNull(subtypeHandle.getFeatureByBaseName("testfeat"));
      Type fooTypeHandle = ts.getType(fooType.getName());
      assertNotNull(fooTypeHandle);
      assertNotNull(fooTypeHandle.getFeatureByBaseName("bar"));


      // check that index exists
      assertNotNull(cas.getIndexRepository().getIndex("MyIndex"));


      // test that priorities work
      cas.createFS(supertypeHandle);
      cas.createFS(subtypeHandle);
      FSIterator iter = cas.getAnnotationIndex().iterator();
      while (iter.isValid()) {
        if (iter.get().getType() == subtypeHandle) // expected
          break;
        if (iter.get().getType() == supertypeHandle) // unexpected
          fail();

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  public void resetNoQuestions() {
    int numViews = this.getBaseSofaCount();
    // Flush indexRepository for all Sofa
    for (int view = 1; view <= numViews; view++) {
      CAS tcas = (view == 1) ? getInitialView() : getView(view);
      if (tcas != null) {
        ((CASImpl) tcas).resetView();


      // mySofaRef = -1 is a flag in initial view that sofa has not been set.
      //    For the initial view, it is possible to not have a sofa - it is set

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    // reset index repositories -- wipes out Sofa index
    this.indexRepository = casCompSer.getCASMgrSerializer().getIndexRepository(this);
    this.indexRepository.commit();


    // get handle to existing initial View
    CAS initialView = this.getInitialView();


    // throw away all other View information as the CAS definition may have changed
    this.svd.sofa2indexMap.clear();
    this.svd.sofaNbr2ViewMap.clear();
    this.svd.viewCount = 0;

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      iterator.moveToNext();
    }
    this.svd.viewCount = numViews;  // total number of views
    for (int viewNbr = 1; viewNbr <= numViews; viewNbr++) {
      CAS view = (viewNbr == 1) ? getInitialView() : getView(viewNbr);
      if (view != null) {
        FSIndexRepositoryImpl loopIndexRep = (FSIndexRepositoryImpl) getSofaIndexRepository(viewNbr);
        loopLen = fsIndex[loopStart];
        for (int i = loopStart + 1; i < loopStart + 1 + loopLen; i++) {
          loopIndexRep.addFS(fsIndex[i]);

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    return getJCas(sofa);
  }


  // For internal platform use only
  CAS getInitialView() {
    CAS couldBeThis = (CAS) this.svd.sofaNbr2ViewMap.get(new Integer(1));
    if (couldBeThis != null) {
      return couldBeThis;
    }
    // create the initial view, without a Sofa
    CAS aView = new CASImpl(this.svd.baseCAS, null);
    this.svd.sofaNbr2ViewMap.put(new Integer(1), aView);
    assert(this.svd.viewCount <= 1);
    this.svd.viewCount = 1;
    return aView;
  }

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      CASRuntimeException e = new CASRuntimeException(CASRuntimeException.SOFANAME_ALREADY_EXISTS,
          new String[] { aSofaID });
      throw e;
    }
    SofaFS newSofa = createSofa(absoluteSofaName, null);
    CAS newView = getView(newSofa);
    ((CASImpl) newView).registerView(newSofa);
    return newView;
  }

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  /**
   * @see org.apache.uima.cas.CAS#addFsToIndexes(FeatureStructure fs)
   */
  public void addFsToIndexes(FeatureStructure fs) {
    if (fs instanceof AnnotationBaseFS) {
      final CAS sofaView = ((AnnotationBaseFS) fs).getView();
      if (sofaView != this) {
        CASRuntimeException e = new CASRuntimeException(
            CASRuntimeException.ANNOTATION_IN_WRONG_INDEX, new String[] { fs.toString(),
                sofaView.getSofa().getSofaID(), this.getSofa().getSofaID() });
        throw e;
      }
    }
    this.indexRepository.addFS(fs);
  }

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  /* (non-Javadoc)
   * @see org.apache.uima.resource.CasManager#createNewCas(java.util.Properties)
   */
  public CAS createNewCas(Properties aPerformanceTuningSettings) throws ResourceInitializationException {
    CAS cas;
    if (mCurrentTypeSystem != null) {
      cas = CasCreationUtils.createCas(getCasDefinition(), aPerformanceTuningSettings, mCurrentTypeSystem);      
    } else
    {
      cas = CasCreationUtils.createCas(getCasDefinition(), aPerformanceTuningSettings);
      mCurrentTypeSystem = cas.getTypeSystem();
    }    
    return cas;
  }

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      if (sofaTypeCode == typeCode) {
        // If a Sofa, create CAS view to get new indexRepository
        SofaFS sofa = (SofaFS) casBeingFilled.createFS(addr);
        // also add to indexes so we can retrieve the Sofa later
        casBeingFilled.getBaseIndexRepository().addFS(sofa);
        CAS view = casBeingFilled.getView(sofa);
        if (sofa.getSofaRef() == 1) {
          casBeingFilled.registerInitialSofa();
        } else {
          // add indexRepo for views other than the initial view
          indexRepositories.add(casBeingFilled.getSofaIndexRepository(sofa));

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