/**
   * Output the finalized report
   *
   * @param result an integer that doesn't get used for anything
   */
  public void onTraversalDone(Integer result) {
    logger.info("Finalizing variant report");

    for (StateKey stateKey : evaluationContexts.keySet()) {
      NewEvaluationContext nec = evaluationContexts.get(stateKey);

      for (VariantEvaluator ve : nec.getEvaluationClassList().values()) {
        ve.finalizeEvaluation();

        AnalysisModuleScanner scanner = new AnalysisModuleScanner(ve);
        Map<Field, DataPoint> datamap = scanner.getData();

        for (Field field : datamap.keySet()) {
          try {
            field.setAccessible(true);

            if (field.get(ve) instanceof TableType) {
              TableType t = (TableType) field.get(ve);

              String subTableName = ve.getClass().getSimpleName() + "." + field.getName();
              final DataPoint dataPointAnn = datamap.get(field);

              GATKReportTable table;
              if (!report.hasTable(subTableName)) {
                report.addTable(subTableName, dataPointAnn.description());
                table = report.getTable(subTableName);

                table.addPrimaryKey("entry", false);
                table.addColumn(subTableName, subTableName);

                for (VariantStratifier vs : stratificationObjects) {
                  table.addColumn(vs.getName(), "unknown");
                }

                table.addColumn("row", "unknown");

                for (Object o : t.getColumnKeys()) {
                  String c;

                  if (o instanceof String) {
                    c = (String) o;
                  } else {
                    c = o.toString();
                  }

                  table.addColumn(c, 0.0);
                }
              } else {
                table = report.getTable(subTableName);
              }

              for (int row = 0; row < t.getRowKeys().length; row++) {
                String r = (String) t.getRowKeys()[row];

                for (VariantStratifier vs : stratificationObjects) {
                  final String columnName = vs.getName();
                  table.set(stateKey.toString() + r, columnName, stateKey.get(columnName));
                }

                for (int col = 0; col < t.getColumnKeys().length; col++) {
                  String c;
                  if (t.getColumnKeys()[col] instanceof String) {
                    c = (String) t.getColumnKeys()[col];
                  } else {
                    c = t.getColumnKeys()[col].toString();
                  }

                  String newStateKey = stateKey.toString() + r;
                  table.set(newStateKey, c, t.getCell(row, col));

                  table.set(newStateKey, "row", r);
                }
              }
            } else {
              GATKReportTable table = report.getTable(ve.getClass().getSimpleName());

              for (VariantStratifier vs : stratificationObjects) {
                String columnName = vs.getName();

                table.set(stateKey.toString(), columnName, stateKey.get(vs.getName()));
              }

              table.set(stateKey.toString(), field.getName(), field.get(ve));
            }
          } catch (IllegalAccessException e) {
            throw new StingException("IllegalAccessException: " + e);
          }
        }
      }
    }

    report.print(out);
  }
  /** Collect relevant information from each variant in the supplied VCFs */
  @Override
  public Integer map(RefMetaDataTracker tracker, ReferenceContext ref, AlignmentContext context) {
    for (NewEvaluationContext nec : evaluationContexts.values()) {
      synchronized (nec) {
        nec.update0(tracker, ref, context);
      }
    }

    if (tracker != null) {
      String aastr =
          (ancestralAlignments == null)
              ? null
              : new String(
                  ancestralAlignments
                      .getSubsequenceAt(
                          ref.getLocus().getContig(),
                          ref.getLocus().getStart(),
                          ref.getLocus().getStop())
                      .getBases());

      //      --------- track ---------           sample  - VariantContexts -
      HashMap<RodBinding<VariantContext>, HashMap<String, Collection<VariantContext>>> evalVCs =
          variantEvalUtils.bindVariantContexts(
              tracker, ref, evals, byFilterIsEnabled, true, perSampleIsEnabled, mergeEvals);
      HashMap<RodBinding<VariantContext>, HashMap<String, Collection<VariantContext>>> compVCs =
          variantEvalUtils.bindVariantContexts(
              tracker, ref, comps, byFilterIsEnabled, false, false, false);

      // for each eval track
      for (final RodBinding<VariantContext> evalRod : evals) {
        final Map<String, Collection<VariantContext>> emptyEvalMap = Collections.emptyMap();
        final Map<String, Collection<VariantContext>> evalSet =
            evalVCs.containsKey(evalRod) ? evalVCs.get(evalRod) : emptyEvalMap;

        // for each sample stratifier
        for (final String sampleName : sampleNamesForStratification) {
          Collection<VariantContext> evalSetBySample = evalSet.get(sampleName);
          if (evalSetBySample == null) {
            evalSetBySample = new HashSet<VariantContext>(1);
            evalSetBySample.add(null);
          }

          // for each eval in the track
          for (VariantContext eval : evalSetBySample) {
            // deal with ancestral alleles if requested
            if (eval != null && aastr != null) {
              eval = new VariantContextBuilder(eval).attribute("ANCESTRALALLELE", aastr).make();
            }

            // for each comp track
            for (final RodBinding<VariantContext> compRod : comps) {
              // no sample stratification for comps
              final HashMap<String, Collection<VariantContext>> compSetHash = compVCs.get(compRod);
              final Collection<VariantContext> compSet =
                  (compSetHash == null || compSetHash.size() == 0)
                      ? Collections.<VariantContext>emptyList()
                      : compVCs.get(compRod).values().iterator().next();

              // find the comp
              final VariantContext comp = findMatchingComp(eval, compSet);

              HashMap<VariantStratifier, List<String>> stateMap =
                  new HashMap<VariantStratifier, List<String>>();
              for (VariantStratifier vs : stratificationObjects) {
                List<String> states =
                    vs.getRelevantStates(
                        ref, tracker, comp, compRod.getName(), eval, evalRod.getName(), sampleName);
                stateMap.put(vs, states);
              }

              ArrayList<StateKey> stateKeys = new ArrayList<StateKey>();
              variantEvalUtils.initializeStateKeys(stateMap, null, null, stateKeys);

              HashSet<StateKey> stateKeysHash = new HashSet<StateKey>(stateKeys);

              for (StateKey stateKey : stateKeysHash) {
                NewEvaluationContext nec = evaluationContexts.get(stateKey);

                // eval against the comp
                synchronized (nec) {
                  nec.apply(tracker, ref, context, comp, eval);
                }

                // eval=null against all comps of different type that aren't bound to another eval
                for (VariantContext otherComp : compSet) {
                  if (otherComp != comp && !compHasMatchingEval(otherComp, evalSetBySample)) {
                    synchronized (nec) {
                      nec.apply(tracker, ref, context, otherComp, null);
                    }
                  }
                }
              }
            }
          }
        }

        if (mergeEvals) break; // stop processing the eval tracks
      }
    }

    return null;
  }