Support for fetching the VendorIdentifier and SerialNumber information from BACnet device

Added support for extracting deviceIdentifier and serialNumber from actual device.

Author: saransh14

api/src/main/java/org/code_house/bacnet4j/wrapper/api/Device.java

@@ -39,6 +39,8 @@ public class Device {
 
     private String modelName = "";
     private String vendorName = "";
+    private int vendorIdentifier ;
+    private String serialNumber = "";
     private String name = "";
     private boolean readMultiple;
 
@@ -85,6 +87,22 @@ public String getVendorName() {
         return vendorName;
     }
 
+    public int getVendorIdentifier() {
+        return vendorIdentifier;
+    }
+
+    public void setVendorIdentifier(int vendorIdentifier) {
+        this.vendorIdentifier = vendorIdentifier;
+    }
+
+    public String getSerialNumber() {
+        return serialNumber;
+    }
+
+    public void setSerialNumber(String serialNumber) {
+        this.serialNumber = serialNumber;
+    }
+
     public void setName(String name) {
         this.name = name;
     }

api/src/main/java/org/code_house/bacnet4j/wrapper/api/DiscoveryEventAdapter.java

@@ -95,6 +95,13 @@ protected Device createDevice(RemoteDevice d) {
         if (d.getVendorName() != null && !d.getVendorName().isEmpty()) {
             device.setVendorName(d.getVendorName());
         }
+        if (d.getVendorIdentifier() != -1) {
+            device.setVendorName(d.getVendorName());
+        }
+        if (d.getCharacterStringProperty(PropertyIdentifier.serialNumber) != null
+        		&& !d.getCharacterStringProperty(PropertyIdentifier.serialNumber).isEmpty()) {
+        	device.setSerialNumber(d.getCharacterStringProperty(PropertyIdentifier.serialNumber));
+        }
         if (d.getName() != null && !d.getName().isEmpty()) {
             device.setName(d.getName());
         }