diff --git a/java_gen/java_model.py b/java_gen/java_model.py
index 4d84e11..ee76a64 100644
--- a/java_gen/java_model.py
+++ b/java_gen/java_model.py
@@ -150,26 +150,6 @@
                 return "PortSpeed.SPEED_{}".format(splits[1])
         return "PortSpeed.SPEED_NONE";
 
-
-    port_features_to_string_map = {
-        "PF_10MB_HD":       "10mb-hd",
-        "PF_10MB_FD":       "10mb-fd",
-        "PF_100MB_HD":      "100mb-hd",
-        "PF_100MB_FD":      "100mb-fd",
-        "PF_1GB_HD":        "1gb-hd",
-        "PF_1GB_FD":        "1gb-fd",
-        "PF_10GB_FD":       "10gb-fd",
-        "PF_40GB_FD":       "40gb-fd",
-        "PF_100GB_FD":      "100gb-fd",
-        "PF_1TB_FD":        "1tb-fd",
-        "PF_COPPER":        "copper",
-        "PF_FIBER":         "fiber",
-        "PF_AUTONEG":       "autoneg",
-        "PF_PAUSE":         "pause",
-        "PF_PAUSE_ASYM":    "pause-asym",
-        "PF_OTHER":         "other",
-    }
-
     def gen_stp_state(enum_entry):
         splits = enum_entry.name.split("_")
         if len(splits)>=1:
@@ -177,30 +157,9 @@
                 return "true"
         return "false"
 
-    port_state_to_string_map = {
-        "STP_LISTEN":   "listen",
-        "LINK_DOWN":    "link-down",
-        "STP_LEARN":    "learn-no-relay",
-        "STP_FORWARD":  "forward",
-        "STP_BLOCK":    "block-broadcast",
-        "BLOCKED":      "blocked",
-        "LIVE":         "live"
-    }
-
-    port_config_to_string_map = {
-        "PORT_DOWN":        "port-down",
-        "NO_STP":           "no-stp",
-        "NO_RECV":          "no-recv",
-        "NO_RECV_STP":      "no-recv-stp",
-        "NO_FLOOD":         "no-flood",
-        "NO_FWD":           "no-fwd",
-        "NO_PACKET_IN":     "no-pkt-in",
-    }
-
     enum_metadata_map = defaultdict(lambda: JavaModel.OFEnumMetadata((), None),
-            OFPortFeatures = OFEnumMetadata((OFEnumPropertyMetadata("PortSpeed", java_type.port_speed, gen_port_speed),), lambda e: JavaModel.port_features_to_string_map.get(e.name)),
-            OFPortState = OFEnumMetadata((OFEnumPropertyMetadata("StpState", java_type.boolean, gen_stp_state),), lambda e: JavaModel.port_state_to_string_map.get(e.name)),
-            OFPortConfig = OFEnumMetadata((), lambda e: JavaModel.port_config_to_string_map.get(e.name))
+            OFPortFeatures = OFEnumMetadata((OFEnumPropertyMetadata("PortSpeed", java_type.port_speed, gen_port_speed),), None),
+            OFPortState = OFEnumMetadata((OFEnumPropertyMetadata("StpState", java_type.boolean, gen_stp_state),), None),
     )
 
     @property