diff --git a/src/main/java/teetime/examples/traceReconstruction/TraceReconstructionAnalysis2.java b/src/main/java/teetime/examples/traceReconstruction/TraceReconstructionAnalysis2.java
index 0ebf4a7926e5fb4ba9d7d90627361c5eee52c977..a950bacd9c7ca109e40a213a9c5b1ff26689644b 100644
--- a/src/main/java/teetime/examples/traceReconstruction/TraceReconstructionAnalysis2.java
+++ b/src/main/java/teetime/examples/traceReconstruction/TraceReconstructionAnalysis2.java
@@ -42,6 +42,8 @@ import teetime.stage.predicate.IsIMonitoringRecordInRange;
 import teetime.stage.predicate.IsOperationExecutionRecordTraceIdPredicate;
 import teetime.stage.predicate.PredicateFilter;
 import teetime.stage.stringBuffer.StringBufferFilter;
+import teetime.stage.stringBuffer.handler.IMonitoringRecordHandler;
+import teetime.stage.stringBuffer.handler.StringHandler;
 import teetime.stage.util.TextLine;
 
 /**
@@ -56,13 +58,12 @@ public class TraceReconstructionAnalysis2 extends Analysis {
 
 	private ClassNameRegistryRepository classNameRegistryRepository;
 
-
 	@Override
 	public void init() {
 		super.init();
-//		IPipeline clockPipeline = buildClockPipeline();
-//		this.clockThread = new WorkerThread(clockPipeline, 1);
-//		Clock clockStage=(Clock) clockPipeline.getStartStages().get(0);
+		// IPipeline clockPipeline = buildClockPipeline();
+		// this.clockThread = new WorkerThread(clockPipeline, 1);
+		// Clock clockStage=(Clock) clockPipeline.getStartStages().get(0);
 
 		final IPipeline pipeline = this.buildPipeline();
 		this.workerThread = new WorkerThread(pipeline, 0);
@@ -75,21 +76,30 @@ public class TraceReconstructionAnalysis2 extends Analysis {
 	private IPipeline buildPipeline() {
 		// predicates TODO
 		final IsIMonitoringRecordInRange isIMonitoringRecordInRange = new IsIMonitoringRecordInRange(0, 1000);
-		final IsOperationExecutionRecordTraceIdPredicate isOperationExecutionRecordTraceIdPredicate = new IsOperationExecutionRecordTraceIdPredicate(false, null);
+		final IsOperationExecutionRecordTraceIdPredicate isOperationExecutionRecordTraceIdPredicate = new IsOperationExecutionRecordTraceIdPredicate(
+				false, null);
 
-		final ClassNameRegistryCreationFilter classNameRegistryCreationFilter = new ClassNameRegistryCreationFilter(this.classNameRegistryRepository);
+		final ClassNameRegistryCreationFilter classNameRegistryCreationFilter = new ClassNameRegistryCreationFilter(
+				this.classNameRegistryRepository);
 		final MonitoringLogDirectory2Files directory2FilesFilter = new MonitoringLogDirectory2Files();
 		final File2TextLinesFilter file2TextLinesFilter = new File2TextLinesFilter();
 		final Cache<TextLine> cache = new Cache<TextLine>();
 
 		final TextLine2RecordFilter textLine2RecordFilter = new TextLine2RecordFilter(this.classNameRegistryRepository);
 		final StringBufferFilter<IMonitoringRecord> stringBufferFilter = new StringBufferFilter<IMonitoringRecord>();
-		final PredicateFilter<IMonitoringRecord> timestampFilter = new PredicateFilter<IMonitoringRecord>(isIMonitoringRecordInRange);
-		final PredicateFilter<OperationExecutionRecord> traceIdFilter = new PredicateFilter<OperationExecutionRecord>(isOperationExecutionRecordTraceIdPredicate);
-		final InstanceOfFilter<IMonitoringRecord, IFlowRecord> instanceOfFilter = new InstanceOfFilter<IMonitoringRecord, IFlowRecord>(IFlowRecord.class);
+		final PredicateFilter<IMonitoringRecord> timestampFilter = new PredicateFilter<IMonitoringRecord>(
+				isIMonitoringRecordInRange);
+		final PredicateFilter<OperationExecutionRecord> traceIdFilter = new PredicateFilter<OperationExecutionRecord>(
+				isOperationExecutionRecordTraceIdPredicate);
+		final InstanceOfFilter<IMonitoringRecord, IFlowRecord> instanceOfFilter = new InstanceOfFilter<IMonitoringRecord, IFlowRecord>(
+				IFlowRecord.class);
 		final TraceReconstructionFilter traceReconstructionFilter = new TraceReconstructionFilter();
 		final CountingFilter<TraceEventRecords> countingFilter = new CountingFilter<TraceEventRecords>();
 
+		// configure stages
+		stringBufferFilter.getDataTypeHandlers().add(new IMonitoringRecordHandler());
+		stringBufferFilter.getDataTypeHandlers().add(new StringHandler());
+
 		// add each stage to a stage list
 		final LinkedList<IStage> startStages = new LinkedList<IStage>();
 		startStages.add(classNameRegistryCreationFilter);
@@ -109,19 +119,22 @@ public class TraceReconstructionAnalysis2 extends Analysis {
 		stages.add(countingFilter);
 
 		// connect pipes
-		QueuePipe.connect(classNameRegistryCreationFilter.filePrefixOutputPort, directory2FilesFilter.filePrefixInputPort);
-		QueuePipe.connect(classNameRegistryCreationFilter.relayDirectoryOutputPort, directory2FilesFilter.directoryInputPort);
+		QueuePipe.connect(classNameRegistryCreationFilter.filePrefixOutputPort,
+				directory2FilesFilter.filePrefixInputPort);
+		QueuePipe.connect(classNameRegistryCreationFilter.relayDirectoryOutputPort,
+				directory2FilesFilter.directoryInputPort);
 		QueuePipe.connect(directory2FilesFilter.fileOutputPort, file2TextLinesFilter.fileInputPort);
 		QueuePipe.connect(file2TextLinesFilter.textLineOutputPort, cache.objectInputPort);
-//		 QueuePipe.connect(XXX, cache.sendInputPort);
+		// QueuePipe.connect(XXX, cache.sendInputPort);
 		QueuePipe.connect(cache.objectOutputPort, textLine2RecordFilter.textLineInputPort);
 		QueuePipe.connect(textLine2RecordFilter.recordOutputPort, stringBufferFilter.objectInputPort);
 		QueuePipe.connect(stringBufferFilter.objectOutputPort, timestampFilter.inputPort);
-//		QueuePipe.connect(timestampFilter.matchingOutputPort, traceIdFilter.inputPort);
+		// QueuePipe.connect(timestampFilter.matchingOutputPort, traceIdFilter.inputPort);
 		// QueuePipe.connect(timestampFilter.mismatchingOutputPort, YYY); // ignore this case
 		QueuePipe.connect(traceIdFilter.matchingOutputPort, instanceOfFilter.inputPort);
 		// QueuePipe.connect(traceIdFilter.mismatchingOutputPort, traceIdFilter.inputPort); // ignore this case
-//		QueuePipe.connect(clockStage.timestampOutputPort, traceReconstructionFilter.timestampInputPort);	// ignore this case
+		// QueuePipe.connect(clockStage.timestampOutputPort, traceReconstructionFilter.timestampInputPort); // ignore
+		// this case
 		QueuePipe.connect(instanceOfFilter.matchingOutputPort, traceReconstructionFilter.recordInputPort);
 		// QueuePipe.connect(instanceOfFilter.mismatchingOutputPort, instanceOfFilter.inputPort); // ignore this case
 		QueuePipe.connect(traceReconstructionFilter.traceValidOutputPort, countingFilter.INPUT_OBJECT);
diff --git a/src/main/java/teetime/stage/stringBuffer/StringBufferFilter.java b/src/main/java/teetime/stage/stringBuffer/StringBufferFilter.java
index 1147d6e6a145f40e13af56d359149c848eb82f80..0419220cf4c2e60fc011388604a33d3d7de8ff3e 100644
--- a/src/main/java/teetime/stage/stringBuffer/StringBufferFilter.java
+++ b/src/main/java/teetime/stage/stringBuffer/StringBufferFilter.java
@@ -15,8 +15,8 @@
  ***************************************************************************/
 package teetime.stage.stringBuffer;
 
-import java.util.ArrayList;
 import java.util.Collection;
+import java.util.LinkedList;
 
 import teetime.framework.core.AbstractFilter;
 import teetime.framework.core.Context;
@@ -39,7 +39,7 @@ public class StringBufferFilter<T> extends AbstractFilter<StringBufferFilter<T>>
 	// BETTER use a non shared data structure to avoid synchronization between threads
 	private KiekerHashMap kiekerHashMap = new KiekerHashMap();
 
-	private Collection<AbstractDataTypeHandler<?>> dataTypeHandlers = new ArrayList<AbstractDataTypeHandler<?>>();
+	private Collection<AbstractDataTypeHandler<?>> dataTypeHandlers = new LinkedList<AbstractDataTypeHandler<?>>();
 
 	@Override
 	protected boolean execute(final Context<StringBufferFilter<T>> context) {