Index: /trunk/EventBenchCore/src/de/ugoe/cs/eventbench/SequenceInstanceOf.java
===================================================================
--- /trunk/EventBenchCore/src/de/ugoe/cs/eventbench/SequenceInstanceOf.java	(revision 208)
+++ /trunk/EventBenchCore/src/de/ugoe/cs/eventbench/SequenceInstanceOf.java	(revision 208)
@@ -0,0 +1,70 @@
+package de.ugoe.cs.eventbench;
+
+import java.util.Collection;
+import java.util.List;
+import java.util.NoSuchElementException;
+
+import de.ugoe.cs.eventbench.data.Event;
+
+/**
+ * <p>
+ * Helper class that can be used to determine if an object is a sequence or a
+ * collection of sequences. {@code instanceof} does not work, because of
+ * the type erasure of generics.
+ * </p>
+ * 
+ * @author Steffen Herbold
+ * @version 1.0
+ */
+public class SequenceInstanceOf {
+
+	/**
+	 * <p>
+	 * Checks if an object is of type {@link Collection}&lt;{@link List}&lt;
+	 * {@link Event}&lt;?&gt;&gt;&gt;.
+	 * </p>
+	 * 
+	 * @param obj
+	 *            object that is checked
+	 * @return true, if the obj is of type {@link Collection}&lt;{@link List}
+	 *         &lt; {@link Event}&lt;?&gt;&gt;&gt;; false otherwise
+	 */
+	public static boolean isCollectionOfSequences(Object obj) {
+		try {
+			if (obj instanceof Collection<?>) {
+				Object listObj = ((Collection<?>) obj).iterator().next();
+				if (listObj instanceof List<?>) {
+					if (((List<?>) listObj).iterator().next() instanceof Event<?>) {
+						return true;
+					}
+				}
+			}
+		} catch (NoSuchElementException e) {
+		}
+		return false;
+	}
+
+	/**
+	 * <p>
+	 * Checks if an object is of type {@link List}&lt;{@link Event}
+	 * &lt;?&gt;&gt;.
+	 * </p>
+	 * 
+	 * @param obj
+	 *            object that is checked
+	 * @return true, if obj is of type {@link List}&lt;{@link Event}
+	 *         &lt;?&gt;&gt;; false otherwise
+	 */
+	public static boolean isEventSequence(Object obj) {
+		try {
+			if (obj instanceof List<?>) {
+				if (((List<?>) obj).iterator().next() instanceof Event<?>) {
+					return true;
+				}
+			}
+		} catch (NoSuchElementException e) {
+		}
+		return false;
+	}
+
+}