diff --git a/java_gen/pre-written/src/main/java/org/projectfloodlight/openflow/types/DatapathId.java b/java_gen/pre-written/src/main/java/org/projectfloodlight/openflow/types/DatapathId.java
new file mode 100644
index 0000000..aa7191a
--- /dev/null
+++ b/java_gen/pre-written/src/main/java/org/projectfloodlight/openflow/types/DatapathId.java
@@ -0,0 +1,63 @@
+package org.projectfloodlight.openflow.types;
+
+import org.projectfloodlight.openflow.util.HexString;
+
+/**
+ * Abstraction of a datapath ID that can be set and/or accessed as either a
+ * long value or a colon-separated string.
+ * 
+ * @author Rob Vaterlaus <rob.vaterlaus@bigswitch.com>
+ */
+public class DatapathId {
+
+    public static final DatapathId NONE = new DatapathId(0);
+
+    private final long rawValue;
+
+    private DatapathId(long rawValue) {
+        this.rawValue = rawValue;
+    }
+
+    public static DatapathId of(long rawValue) {
+        return new DatapathId(rawValue);
+    }
+
+    public static DatapathId of(String s) {
+        return new DatapathId(HexString.toLong(s));
+    }
+
+    public long getLong() {
+        return rawValue;
+    }
+
+    public U64 getUnsignedLong() {
+        return U64.of(rawValue);
+    }
+
+    @Override
+    public String toString() {
+        return HexString.toHexString(rawValue);
+    }
+
+    @Override
+    public int hashCode() {
+        final int prime = 31;
+        int result = 1;
+        result = prime * result + (int) (rawValue ^ (rawValue >>> 32));
+        return result;
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj)
+            return true;
+        if (obj == null)
+            return false;
+        if (getClass() != obj.getClass())
+            return false;
+        DatapathId other = (DatapathId) obj;
+        if (rawValue != other.rawValue)
+            return false;
+        return true;
+    }
+}