Examples of org.apache.uima.cas.FSIterator

org.apache.uima.cas.FSIterator
Iterator over feature structures.
This iterator interface extends {@link java.util.Iterator}, and supports the standard hasNext and next methods. If finer control, including reverse iteration, is needed, see below.
Note: do not use the APIs described below *together* with the standard Java iterator methods next() and hasNext(). On any given iterator, use either the one or the other, but not both together. Otherwise, next/hasNext may exhibit incorrect behavior.
The FSIterator interface introduces the methods {@link #get()}, {@link #moveToNext()}, {@link #moveToPrevious()} methods. With these methods, retrieving thecurrent element (get) is a separate operation from moving the iterator (moveToNext and moveToPrevious. This makes the user's code less compact, but allows for finer control.
Specifically the get method is defined to return the same element that a call to next() would return, but does not advance the iterator.
Implementations of this interface are not required to be fail-fast. That is, if the iterator's collection is modified, the effects on the iterator are in general undefined. Some collections may handle this more gracefully than others, but in general, concurrent modification of the collection you're iterating over is a bad idea.
If the iterator is moved past the boundaries of the collection, the behavior of subsequent calls to {@link FSIterator#moveToNext() moveToNext()} or{@link FSIterator#moveToPrevious() moveToPrevious()} is undefined. For example, if a previouslyvalid iterator is invalidated by a call to {@link FSIterator#moveToNext() moveToNext()}, a subsequent call to {@link FSIterator#moveToPrevious() moveToPrevious()} is not guaranteed to setthe iterator back to the last element in the collection. Always use {@link FSIterator#moveToLast() moveToLast()} in such cases.

    } catch (CASException e) {
      throw new ResourceProcessException(e);
    }


    // retrieve the filename of the input file from the CAS
    FSIterator it = jcas.getAnnotationIndex(SourceDocumentInformation.type).iterator();
    File outFile = null;
    if (it.hasNext()) {
      SourceDocumentInformation fileLoc = (SourceDocumentInformation) it.next();
      File inFile;
      try {
        // handle blanks in path
        // https://issues.apache.org/jira/browse/UIMA-1748
        // use 3 arg form of URI Constructor to properly quote any otherwise illegal chars such as blank

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      // UIMAFramework.getLogger().log("CAS ACount::" +
      // cas.getAnnotationIndex().size());
      int totalAnnots = 0;
      SofaFS sofa;
      FSIterator sItr = cas.getSofaIterator();
      while (sItr.isValid()) {
        sofa = (SofaFS) sItr.get();
        totalAnnots += cas.getView(sofa).getAnnotationIndex().size();
        sItr.moveToNext();
      }
      UIMAFramework.getLogger().log(Level.FINE, "CAS Annotation Count::" + totalAnnots);


      return responseFrame;
    } catch (Throwable ex) {

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    } catch (BadLocationException e) {
      throw new RuntimeException(e);
    }


    // Iterate over annotations
    FSIterator iter = mCAS.getAnnotationIndex().iterator();
    Hashtable checkBoxes = new Hashtable();
    HashSet checkBoxesDone = new HashSet();
    while (iter.isValid()) {
      AnnotationFS fs = (AnnotationFS) iter.get();
      iter.moveToNext();


      Type type = fs.getType();


      // have we seen this type before?
      JCheckBox checkbox = (JCheckBox) mTypeToCheckboxMap.get(type);

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      // noticeable delay when the user first switches to Entity mode.
      jcas = mCAS.getJCas();
    } catch (CASException e) {
      throw new RuntimeException(e);
    }
    FSIterator iter = jcas.getAnnotationIndex().iterator();
    while (iter.isValid()) {
      Annotation annot = (Annotation) iter.get();
      iter.moveToNext();


      // find out what entity this annotation represents
      EntityResolver.Entity entity = mEntityResolver.getEntity(annot);


      //if not an entity, skip it

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   */
  private void updateSelectedAnnotationTree(int aPosition) {
    DefaultMutableTreeNode root = (DefaultMutableTreeNode) this.selectedAnnotationTreeModel
            .getRoot();
    root.removeAllChildren();
    FSIterator annotIter = this.mCAS.getAnnotationIndex().iterator();
    while (annotIter.isValid()) {
      AnnotationFS annot = (AnnotationFS) annotIter.get();
      // if (getPanePosition(annot.getBegin()) <= aPosition
      // && getPanePosition(annot.getEnd()) > aPosition)
      if (annot.getBegin() <= aPosition && annot.getEnd() > aPosition) {
        JCheckBox checkbox = (JCheckBox) mTypeToCheckboxMap.get(annot.getType());
        if (checkbox != null && checkbox.isSelected()) {
          addAnnotationToTree(annot);
        }
      }
      // else if (getPanePosition(annot.getBegin()) > aPosition)
      else if (annot.getBegin() > aPosition)
        break;
      annotIter.moveToNext();
    }
    this.selectedAnnotationTreeModel.nodeStructureChanged(root);
    // expand first level
    // int row = 0;
    // while (row < this.selectedAnnotationTree.getRowCount())

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  public void testIteratorCopy() {
    Annotation something = new Annotation(jcas);
    something.addToIndexes();


    JFSIndexRepository ir = jcas.getJFSIndexRepository();
    FSIterator i1 = ir.getAnnotationIndex().iterator();
    FSIterator i2 = i1.copy();
    FSIterator i3 = i2.copy();
    assertTrue(i3 != null);
  }

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      r2.addToIndexes();
      r1.addToIndexes();


      JFSIndexRepository jfsi = jcas.getJFSIndexRepository();
      FSIndex fsi1 = jfsi.getIndex("all", Root.type);
      FSIterator fsit1 = fsi1.iterator();
      assertTrue(fsit1.isValid());
      assertTrue(r2 == fsit1.get());
      fsit1.moveToNext();
      assertTrue(fsit1.isValid());
      assertTrue(r1 == fsit1.get());
      /*
       * while (fsit1.isValid()) { System.out.println("Iterator getting: " +
       * fsit1.get().toString()); fsit1.moveToNext(); }
       */

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      for (int i = 0; i < 50; i++) {
        root1.make();
        // System.out.print("m");
      }
      JFSIndexRepository jir = jcas.getJFSIndexRepository();
      FSIterator it = jir.getIndex("all", Root.type).iterator();
      // System.out.print("\nTesting Random: ");
      while (it.isValid()) {
        root1.test(it.get());
        // System.out.print("t");
        it.moveToNext();
      }
    } catch (Exception e) {
      JUnitExtension.handleException(e);
    }
  }

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      FeatureStructure f1 = localCas.createFS(subTok);
      localCas.getIndexRepository().addFS(f1);


      JFSIndexRepository ir = jcas.getJFSIndexRepository();
      FSIndex index = ir.getAnnotationIndex();
      FSIterator it = index.iterator();


      try {


        while (it.isValid()) {
          Object o = it.get();
          assertTrue(o instanceof Annotation);
          it.moveToNext();
        }
      } catch (Exception e) {
        System.out.println("failed: nonJCasCovered by JCas");
      }
    } catch (Exception e) {

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  public void testIteratorGetsJCasType() throws Exception {
    try {
      Token tok1 = new Token(jcas);
      tok1.addToIndexes();
      FSIterator it = jcas.getJFSIndexRepository().getIndex("all", Token.type).iterator();
      while (it.hasNext()) {
        Token token = (Token) it.next();
        token.addToIndexes(); // something to do to keep Java from optimizing this away.
      }
    } catch (Exception e) {
      JUnitExtension.handleException(e);
    }

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