package net.onrc.onos.ofcontroller.util;

import java.math.BigInteger;

import net.onrc.onos.ofcontroller.util.serializers.FlowIdDeserializer;
import net.onrc.onos.ofcontroller.util.serializers.FlowIdSerializer;

import org.codehaus.jackson.map.annotate.JsonDeserialize;
import org.codehaus.jackson.map.annotate.JsonSerialize;

/**
 * The class representing a Flow ID.
 */
@JsonDeserialize(using=FlowIdDeserializer.class)
@JsonSerialize(using=FlowIdSerializer.class)
public class FlowId {
    private long value;

    /**
     * Default constructor.
     */
    public FlowId() {
	this.value = 0;
    }

    /**
     * Constructor from an integer value.
     *
     * @param value the value to use.
     */
    public FlowId(long value) {
	this.value = value;
    }

    /**
     * Constructor from a string.
     *
     * @param value the value to use.
     */
    public FlowId(String value) {
	//
	// Use the help of BigInteger to parse strings representing
	// large unsigned hex long values.
	//
	char c = 0;
	if (value.length() > 2)
	    c = value.charAt(1);
	if ((c == 'x') || (c == 'X'))
	    this.value = new BigInteger(value.substring(2), 16).longValue();
	else
	    this.value = Long.decode(value);
    }

    /**
     * Get the value of the Flow ID.
     *
     * @return the value of the Flow ID.
     */
    public long value() { return value; }

    /**
     * Set the value of the Flow ID.
     *
     * @param value the value to set.
     */
    public void setValue(long value) {
	this.value = value;
    }

    /**
     * Convert the Flow ID value to a hexadecimal string.
     *
     * @return the Flow ID value to a hexadecimal string.
     */
    @Override
    public String toString() {
	return "0x" + Long.toHexString(this.value);
    }
}

@@ -479,16 +479,46 @@
 s FlowId
+ implements Comparable%3CFlowId%3E
  %7B%0A    p
@@ -1783,11 +1783,116 @@
 );%0A    %7D
+%0A%0A%09@Override%0A%09public int compareTo(FlowId o) %7B%0A%09%09return Long.valueOf(this.value).compareTo(o.value());%0A%09%7D
 %0A%7D%0A

make FlowId class to be comparable.