java_gen: add OFGroup
diff --git a/java_gen/pre-written/src/main/java/org/projectfloodlight/openflow/types/OFGroup.java b/java_gen/pre-written/src/main/java/org/projectfloodlight/openflow/types/OFGroup.java
new file mode 100644
index 0000000..a20534f
--- /dev/null
+++ b/java_gen/pre-written/src/main/java/org/projectfloodlight/openflow/types/OFGroup.java
@@ -0,0 +1,158 @@
+package org.projectfloodlight.openflow.types;
+
+import org.jboss.netty.buffer.ChannelBuffer;
+import org.projectfloodlight.openflow.annotations.Immutable;
+import org.projectfloodlight.openflow.exceptions.OFParseError;
+
+import com.google.common.primitives.UnsignedInts;
+
+/**
+ * Abstraction of an logical / OpenFlow group (ofp_group) in OpenFlow.
+ * Immutable.
+ *
+ * @author Andreas Wundsam <andreas.wundsam@bigswitch.com>
+ */
+@Immutable
+public class OFGroup implements OFValueType<OFGroup> {
+ static final int LENGTH = 4;
+
+ // private int constants (OF1.1+) to avoid duplication in the code
+ // should not have to use these outside this class
+ private static final int ZERO_VAL = 0x00;
+ private static final int MAX_VAL = 0xffffff00;
+ private static final int ALL_VAL = 0xfffffffc;
+ private static final int ANY_VAL = 0xffffffff;
+
+
+ // ////////////// public constants - use to access well known OpenFlow ports
+
+ /** Maximum number of physical and logical switch ports. */
+ public final static OFGroup MAX = new NamedGroup(MAX_VAL, "max");
+
+ /**
+ * Send the packet out the input port. This reserved port must be explicitly
+ * used in order to send back out of the input port.
+ */
+ public final static OFGroup ALL = new NamedGroup(ALL_VAL, "all");
+
+ /**
+ * Wildcard group used only for flow mod (delete) and flow stats requests.
+ * Selects all flows regardless of output port (including flows with no
+ * output port). NOTE: OpenFlow 1.0 calls this 'NONE'
+ */
+ public final static OFGroup ANY = new NamedGroup(ANY_VAL, "any");
+
+ /** group 0 in case we need it
+ */
+ public static final OFGroup ZERO = OFGroup.of(ZERO_VAL);
+
+ public static final OFGroup NO_MASK = ANY;
+ public static final OFGroup FULL_MASK = ZERO;
+
+ /** raw openflow port number as a signed 32 bit integer */
+ private final int groupNumber;
+
+ /** private constructor. use of*-Factory methods instead */
+ private OFGroup(final int portNumber) {
+ this.groupNumber = portNumber;
+ }
+
+ /**
+ * get an OFPort object corresponding to a raw 32-bit integer port number.
+ * NOTE: The port object may either be newly allocated or cached. Do not
+ * rely on either behavior.
+ *
+ * @param portNumber
+ * @return a corresponding OFPort
+ */
+ public static OFGroup of(final int groupNumber) {
+ switch(groupNumber) {
+ case ZERO_VAL:
+ return MAX;
+ case MAX_VAL:
+ return MAX;
+ case ALL_VAL:
+ return ALL;
+ case ANY_VAL:
+ return ANY;
+ default:
+ if(UnsignedInts.compare(groupNumber, MAX_VAL) > 0) {
+ // greater than max_val, but not one of the reserved values
+ throw new IllegalArgumentException("Unknown special group number: "
+ + groupNumber);
+ }
+ return new OFGroup(groupNumber);
+ }
+ }
+
+ /** return the port number as a int32 */
+ public int getGroupNumber() {
+ return groupNumber;
+ }
+
+ @Override
+ public String toString() {
+ return UnsignedInts.toString(groupNumber);
+ }
+
+ /** Extension of OFPort for named groups */
+ static class NamedGroup extends OFGroup {
+ private final String name;
+
+ NamedGroup(final int portNo, final String name) {
+ super(portNo);
+ this.name = name;
+ }
+
+ public String getName() {
+ return name;
+ }
+
+ @Override
+ public String toString() {
+ return name;
+ }
+ }
+
+ @Override
+ public int getLength() {
+ return LENGTH;
+ }
+
+ @Override
+ public boolean equals(Object obj) {
+ if (!(obj instanceof OFGroup))
+ return false;
+ OFGroup other = (OFGroup)obj;
+ if (other.groupNumber != this.groupNumber)
+ return false;
+ return true;
+ }
+
+ @Override
+ public int hashCode() {
+ final int prime = 53;
+ int result = 1;
+ result = prime * result + groupNumber;
+ return result;
+ }
+
+ public void write4Bytes(ChannelBuffer c) {
+ c.writeInt(this.groupNumber);
+ }
+
+ public static OFGroup read4Bytes(ChannelBuffer c) throws OFParseError {
+ return OFGroup.of(c.readInt());
+ }
+
+ @Override
+ public OFGroup applyMask(OFGroup mask) {
+ return OFGroup.of(this.groupNumber & mask.groupNumber);
+ }
+
+ @Override
+ public int compareTo(OFGroup o) {
+ return UnsignedInts.compare(this.groupNumber, o.groupNumber);
+ }
+
+}