Implemented hashcode() and equals() on Dpid, Port and SwitchPort in order to make SwitchPort comparison easier
diff --git a/src/main/java/net/onrc/onos/ofcontroller/util/SwitchPort.java b/src/main/java/net/onrc/onos/ofcontroller/util/SwitchPort.java
index 95a934f..898b9b0 100644
--- a/src/main/java/net/onrc/onos/ofcontroller/util/SwitchPort.java
+++ b/src/main/java/net/onrc/onos/ofcontroller/util/SwitchPort.java
@@ -6,83 +6,103 @@
  * The class representing a Switch-Port.
  */
 public class SwitchPort {
-    private Dpid dpid;		// The DPID of the switch
-    private Port port;		// The port of the switch
+	private Dpid dpid;		// The DPID of the switch
+	private Port port;		// The port of the switch
 
-    /**
-     * Default constructor.
-     */
-    public SwitchPort() {
-    }
+	/**
+	 * Default constructor.
+	 */
+	public SwitchPort() {
+	}
 
-    /**
-     * Constructor for a given DPID and a port.
-     *
-     * @param dpid the DPID to use.
-     * @param port the port to use.
-     */
-    public SwitchPort(Dpid dpid, Port port) {
-	this.dpid = dpid;
-	this.port = port;
-    }
+	/**
+	 * Constructor for a given DPID and a port.
+	 *
+	 * @param dpid the DPID to use.
+	 * @param port the port to use.
+	 */
+	public SwitchPort(Dpid dpid, Port port) {
+		this.dpid = dpid;
+		this.port = port;
+	}
 
-    /**
-     * Get the DPID value of the Switch-Port.
-     *
-     * @return the DPID value of the Switch-Port.
-     */
-    @JsonProperty("dpid")
-    public Dpid dpid() { return dpid; }
+	/**
+	 * Get the DPID value of the Switch-Port.
+	 *
+	 * @return the DPID value of the Switch-Port.
+	 */
+	@JsonProperty("dpid")
+	public Dpid dpid() { return dpid; }
 
-    /**
-     * Set the DPID value of the Switch-Port.
-     *
-     * @param dpid the DPID to use.
-     */
-    @JsonProperty("dpid")
-    public void setDpid(Dpid dpid) {
-	this.dpid = dpid;
-    }
+	/**
+	 * Set the DPID value of the Switch-Port.
+	 *
+	 * @param dpid the DPID to use.
+	 */
+	@JsonProperty("dpid")
+	public void setDpid(Dpid dpid) {
+		this.dpid = dpid;
+	}
 
-    /**
-     * Get the port value of the Switch-Port.
-     *
-     * @return the port value of the Switch-Port.
-     */
-    @JsonProperty("port")
-    public Port port() { return port; }
+	/**
+	 * Get the port value of the Switch-Port.
+	 *
+	 * @return the port value of the Switch-Port.
+	 */
+	@JsonProperty("port")
+	public Port port() { return port; }
 
-    /**
-     * Set the port value of the Switch-Port.
-     *
-     * @param port the port to use.
-     */
-    @JsonProperty("port")
-    public void setPort(Port port) {
-	this.port = port;
-    }
+	/**
+	 * Set the port value of the Switch-Port.
+	 *
+	 * @param port the port to use.
+	 */
+	@JsonProperty("port")
+	public void setPort(Port port) {
+		this.port = port;
+	}
 
-    /**
-     * Set the DPID and port values of the Switch-Port.
-     *
-     * @param dpid the DPID to use.
-     * @param port the port to use.
-     */
-    public void setValue(Dpid dpid, Port port) {
-	this.dpid = dpid;
-	this.port = port;
-    }
+	/**
+	 * Set the DPID and port values of the Switch-Port.
+	 *
+	 * @param dpid the DPID to use.
+	 * @param port the port to use.
+	 */
+	public void setValue(Dpid dpid, Port port) {
+		this.dpid = dpid;
+		this.port = port;
+	}
 
-    /**
-     * Convert the Switch-Port value to a string.
-     *
-     * The string has the following form:
-     *  01:02:03:04:05:06:07:08/1234
-     *
-     * @return the Switch-Port value as a string.
-     */
-    @Override
-    public String toString() {
-	return this.dpid.toString() + "/" + this.port;
-    }
+	/**
+	 * Convert the Switch-Port value to a string.
+	 *
+	 * The string has the following form:
+	 *  01:02:03:04:05:06:07:08/1234
+	 *
+	 * @return the Switch-Port value as a string.
+	 */
+	@Override
+	public String toString() {
+		return this.dpid.toString() + "/" + this.port;
+	}
+
+	@Override
+	public boolean equals(Object other) {
+		if (!(other instanceof SwitchPort)) {
+			return false;
+		}
+
+		SwitchPort otherSwitchPort = (SwitchPort) other;
+
+		return (dpid.equals(otherSwitchPort.dpid) &&
+				port.equals(otherSwitchPort.port));
+	}
+
+	@Override
+	public int hashCode() {
+		int hash = 17;
+		hash += 31 * hash + dpid.hashCode();
+		hash += 31 * hash + port.hashCode();
+		return hash;
+	}
 }