Package renaming - missed the pre-written files in the previous commit.
diff --git a/java_gen/pre-written/src/main/java/org/projectfloodlight/openflow/protocol/match/MatchField.java b/java_gen/pre-written/src/main/java/org/projectfloodlight/openflow/protocol/match/MatchField.java
new file mode 100644
index 0000000..333d25d
--- /dev/null
+++ b/java_gen/pre-written/src/main/java/org/projectfloodlight/openflow/protocol/match/MatchField.java
@@ -0,0 +1,156 @@
+package org.projectfloodlight.openflow.protocol.match;
+
+import org.projectfloodlight.openflow.types.ArpOpcode;
+import org.projectfloodlight.openflow.types.EthType;
+import org.projectfloodlight.openflow.types.ICMPv4Code;
+import org.projectfloodlight.openflow.types.ICMPv4Type;
+import org.projectfloodlight.openflow.types.IPv4;
+import org.projectfloodlight.openflow.types.IPv6;
+import org.projectfloodlight.openflow.types.IPv6FlowLabel;
+import org.projectfloodlight.openflow.types.IpDscp;
+import org.projectfloodlight.openflow.types.IpEcn;
+import org.projectfloodlight.openflow.types.IpProtocol;
+import org.projectfloodlight.openflow.types.MacAddress;
+import org.projectfloodlight.openflow.types.OFMetadata;
+import org.projectfloodlight.openflow.types.OFPort;
+import org.projectfloodlight.openflow.types.OFValueType;
+import org.projectfloodlight.openflow.types.TransportPort;
+import org.projectfloodlight.openflow.types.VlanPcp;
+import org.projectfloodlight.openflow.types.VlanVid;
+
+@SuppressWarnings("unchecked")
+public class MatchField<F extends OFValueType<F>> {
+    private final String name;
+    public final MatchFields id;
+    private final Prerequisite<?>[] prerequisites;
+
+    private MatchField(final String name, final MatchFields id, Prerequisite<?>... prerequisites) {
+        this.name = name;
+        this.id = id;
+        this.prerequisites = prerequisites;
+    }
+
+    public final static MatchField<OFPort> IN_PORT =
+            new MatchField<OFPort>("in_port", MatchFields.IN_PORT);
+
+    public final static MatchField<OFPort> IN_PHY_PORT =
+            new MatchField<OFPort>("in_phy_port", MatchFields.IN_PHY_PORT,
+                    new Prerequisite<OFPort>(MatchField.IN_PORT));
+
+    public final static MatchField<OFMetadata> METADATA =
+            new MatchField<OFMetadata>("metadata", MatchFields.METADATA);
+
+    public final static MatchField<MacAddress> ETH_DST =
+            new MatchField<MacAddress>("eth_dst", MatchFields.ETH_DST);
+
+    public final static MatchField<MacAddress> ETH_SRC =
+            new MatchField<MacAddress>("eth_src", MatchFields.ETH_SRC);
+
+    public final static MatchField<EthType> ETH_TYPE =
+            new MatchField<EthType>("eth_type", MatchFields.ETH_TYPE);
+
+    public final static MatchField<VlanVid> VLAN_VID =
+            new MatchField<VlanVid>("vlan_vid", MatchFields.VLAN_VID);
+
+    public final static MatchField<VlanPcp> VLAN_PCP =
+            new MatchField<VlanPcp>("vlan_pcp", MatchFields.VLAN_PCP,
+                    new Prerequisite<VlanVid>(MatchField.VLAN_VID));
+
+    public final static MatchField<IpDscp> IP_DSCP =
+            new MatchField<IpDscp>("ip_dscp", MatchFields.IP_DSCP,
+                    new Prerequisite<EthType>(MatchField.ETH_TYPE, EthType.ETH_TYPE_IPv4, EthType.ETH_TYPE_IPv6));
+
+    public final static MatchField<IpEcn> IP_ECN =
+            new MatchField<IpEcn>("ip_dscp", MatchFields.IP_ECN,
+                    new Prerequisite<EthType>(MatchField.ETH_TYPE, EthType.ETH_TYPE_IPv4, EthType.ETH_TYPE_IPv6));
+
+    public final static MatchField<IpProtocol> IP_PROTO =
+            new MatchField<IpProtocol>("ip_proto", MatchFields.IP_PROTO,
+                    new Prerequisite<EthType>(MatchField.ETH_TYPE, EthType.ETH_TYPE_IPv4, EthType.ETH_TYPE_IPv6));
+
+    public final static MatchField<IPv4> IPV4_SRC =
+            new MatchField<IPv4>("ipv4_src", MatchFields.IPV4_SRC,
+                    new Prerequisite<EthType>(MatchField.ETH_TYPE, EthType.ETH_TYPE_IPv4));
+
+    public final static MatchField<IPv4> IPV4_DST =
+            new MatchField<IPv4>("ipv4_dst", MatchFields.IPV4_DST,
+                    new Prerequisite<EthType>(MatchField.ETH_TYPE, EthType.ETH_TYPE_IPv4));
+
+    public final static MatchField<TransportPort> TCP_SRC = new MatchField<TransportPort>(
+            "tcp_src", MatchFields.TCP_SRC,
+            new Prerequisite<IpProtocol>(MatchField.IP_PROTO, IpProtocol.IP_PROTO_TCP));
+
+    public final static MatchField<TransportPort> TCP_DST = new MatchField<TransportPort>(
+            "tcp_dst", MatchFields.TCP_DST,
+            new Prerequisite<IpProtocol>(MatchField.IP_PROTO, IpProtocol.IP_PROTO_TCP));
+
+    public final static MatchField<TransportPort> UDP_SRC = new MatchField<TransportPort>(
+            "udp_src", MatchFields.UDP_SRC,
+            new Prerequisite<IpProtocol>(MatchField.IP_PROTO, IpProtocol.IP_PROTO_UDP));
+
+    public final static MatchField<TransportPort> UDP_DST = new MatchField<TransportPort>(
+            "udp_dst", MatchFields.UDP_DST,
+            new Prerequisite<IpProtocol>(MatchField.IP_PROTO, IpProtocol.IP_PROTO_UDP));
+
+    public final static MatchField<TransportPort> SCTP_SRC = new MatchField<TransportPort>(
+            "sctp_src", MatchFields.SCTP_SRC,
+            new Prerequisite<IpProtocol>(MatchField.IP_PROTO, IpProtocol.IP_PROTO_SCTP));
+
+    public final static MatchField<TransportPort> SCTP_DST = new MatchField<TransportPort>(
+            "sctp_dst", MatchFields.SCTP_DST,
+            new Prerequisite<IpProtocol>(MatchField.IP_PROTO, IpProtocol.IP_PROTO_SCTP));
+
+    public final static MatchField<ICMPv4Type> ICMPV4_TYPE = new MatchField<ICMPv4Type>(
+            "icmpv4_src", MatchFields.ICMPV4_TYPE,
+            new Prerequisite<IpProtocol>(MatchField.IP_PROTO, IpProtocol.IP_PROTO_ICMP));
+
+    public final static MatchField<ICMPv4Code> ICMPV4_CODE = new MatchField<ICMPv4Code>(
+            "icmpv4_dst", MatchFields.ICMPV4_CODE,
+            new Prerequisite<IpProtocol>(MatchField.IP_PROTO, IpProtocol.IP_PROTO_ICMP));
+
+    public final static MatchField<ArpOpcode> ARP_OP = new MatchField<ArpOpcode>(
+            "arp_op", MatchFields.ARP_OP,
+            new Prerequisite<EthType>(MatchField.ETH_TYPE, EthType.ETH_TYPE_ARP));
+
+    public final static MatchField<IPv4> ARP_SPA =
+            new MatchField<IPv4>("arp_spa", MatchFields.ARP_SPA,
+                    new Prerequisite<EthType>(MatchField.ETH_TYPE, EthType.ETH_TYPE_ARP));
+
+    public final static MatchField<IPv4> ARP_TPA =
+            new MatchField<IPv4>("arp_tpa", MatchFields.ARP_TPA,
+                    new Prerequisite<EthType>(MatchField.ETH_TYPE, EthType.ETH_TYPE_ARP));
+
+    public final static MatchField<MacAddress> ARP_SHA =
+            new MatchField<MacAddress>("arp_sha", MatchFields.ARP_SHA,
+                    new Prerequisite<EthType>(MatchField.ETH_TYPE, EthType.ETH_TYPE_ARP));
+
+    public final static MatchField<MacAddress> ARP_THA =
+            new MatchField<MacAddress>("arp_tha", MatchFields.ARP_THA,
+                    new Prerequisite<EthType>(MatchField.ETH_TYPE, EthType.ETH_TYPE_ARP));
+
+    public final static MatchField<IPv6> IPV6_SRC =
+            new MatchField<IPv6>("ipv6_src", MatchFields.IPV6_SRC,
+                    new Prerequisite<EthType>(MatchField.ETH_TYPE, EthType.ETH_TYPE_IPv6));
+
+    public final static MatchField<IPv6> IPV6_DST =
+            new MatchField<IPv6>("ipv6_dst", MatchFields.IPV6_DST,
+                    new Prerequisite<EthType>(MatchField.ETH_TYPE, EthType.ETH_TYPE_IPv6));
+
+    public final static MatchField<IPv6FlowLabel> IPV6_FLABEL =
+            new MatchField<IPv6FlowLabel>("ipv6_flabel", MatchFields.IPV6_FLABEL,
+                    new Prerequisite<EthType>(MatchField.ETH_TYPE, EthType.ETH_TYPE_IPv6));
+
+    public String getName() {
+        return name;
+    }
+
+    public boolean arePrerequisitesOK(Match match) {
+        for (Prerequisite<?> p : this.prerequisites) {
+            if (!p.isSatisfied(match)) {
+                return false;
+            }
+        }
+        return true;
+    }
+
+}