/*
*
*
* Copyright 1990-2009 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version
* 2 only, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License version 2 for more details (a copy is
* included at /legal/license.txt).
*
* You should have received a copy of the GNU General Public License
* version 2 along with this work; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
* Clara, CA 95054 or visit www.sun.com if you need additional
* information or have any questions.
*/
package com.sun.jsr082.bluetooth;
import java.io.IOException;
import java.util.Enumeration;
import javax.bluetooth.DataElement;
import javax.bluetooth.RemoteDevice;
import javax.bluetooth.ServiceRecord;
/*
* Serializes ServiceRecord objects.
*/
public class ServiceRecordSerializer {
/* Helper object used for data element serialization. */
static DataElementSerializer des;
/* Initializes static fields. */
static {
des = new DataElementSerializer();
}
/*
* Serializes given service record - creates an array of bytes representing
* data elements as described in Bluetooth Specification Version 1.2,
* vol 3, page 127.
*
* @param record the service record to serialize
* @return an array containing the serialized record
*/
public static synchronized byte[] serialize(ServiceRecord record) {
DataElement seq = new DataElement(DataElement.DATSEQ);
int[] attrIDs = record.getAttributeIDs();
for (int i = 0; i < attrIDs.length; i++) {
DataElement attrID = new DataElement(DataElement.U_INT_2,
attrIDs[i]);
DataElement attrValue = record.getAttributeValue(attrIDs[i]);
if (attrValue != null) {
seq.addElement(attrID);
seq.addElement(attrValue);
}
}
try {
return des.serialize(seq);
} catch (IOException e) {
return null;
}
}
/*
* Restores previously serialized service record.
*
* @param notifier notifier object the newly created record
* to be associated with
* @param data serialized service record data
* @return restored service record
*/
public static synchronized ServiceRecordImpl restore(
BluetoothNotifier notifier, byte[] data) {
DataElement seq;
try {
seq = des.restore(data);
} catch (IOException e) {
return null;
}
Enumeration elements = (Enumeration)seq.getValue();
int[] attrIDs = new int[seq.getSize() / 2];
DataElement[] attrValues = new DataElement[attrIDs.length];
for (int i = 0; i < attrIDs.length; i++) {
attrIDs[i] = (int)((DataElement)elements.nextElement()).getLong();
DataElement attrValue = (DataElement)elements.nextElement();
DataElement newAttrValue;
int dataType = attrValue.getDataType();
switch (dataType) {
case DataElement.BOOL:
newAttrValue = new DataElement(attrValue.getBoolean());
break;
case DataElement.NULL:
newAttrValue = new DataElement(DataElement.NULL);
break;
case DataElement.U_INT_1:
case DataElement.U_INT_2:
case DataElement.U_INT_4:
case DataElement.INT_1:
case DataElement.INT_2:
case DataElement.INT_4:
case DataElement.INT_8:
newAttrValue = new DataElement(dataType,
attrValue.getLong());
break;
case DataElement.DATALT:
case DataElement.DATSEQ:
Enumeration e = (Enumeration)attrValue.getValue();
newAttrValue = new DataElement(dataType);
while (e.hasMoreElements()) {
newAttrValue.addElement((DataElement)e.nextElement());
}
break;
default:
newAttrValue = new DataElement(attrValue.getDataType(),
attrValue.getValue());
break;
}
attrValues[i] = newAttrValue;
}
return new ServiceRecordImpl(notifier, attrIDs, attrValues);
}
public static synchronized ServiceRecordImpl restore(RemoteDevice device, byte[] data ) {
DataElement seq;
try {
seq = des.restore(data);
} catch (IOException e) {
return null;
}
Enumeration elements = (Enumeration)seq.getValue();
int[] attrIDs = new int[seq.getSize() / 2];
DataElement[] attrValues = new DataElement[attrIDs.length];
for (int i = 0; i < attrIDs.length; i++) {
attrIDs[i] = (int)((DataElement)elements.nextElement()).getLong();
DataElement attrValue = (DataElement)elements.nextElement();
DataElement newAttrValue;
int dataType = attrValue.getDataType();
switch (dataType) {
case DataElement.BOOL:
newAttrValue = new DataElement(attrValue.getBoolean());
break;
case DataElement.NULL:
newAttrValue = new DataElement(DataElement.NULL);
break;
case DataElement.U_INT_1:
case DataElement.U_INT_2:
case DataElement.U_INT_4:
case DataElement.INT_1:
case DataElement.INT_2:
case DataElement.INT_4:
case DataElement.INT_8:
newAttrValue = new DataElement(dataType,
attrValue.getLong());
break;
case DataElement.DATALT:
case DataElement.DATSEQ:
Enumeration e = (Enumeration)attrValue.getValue();
newAttrValue = new DataElement(dataType);
while (e.hasMoreElements()) {
newAttrValue.addElement((DataElement)e.nextElement());
}
break;
default:
newAttrValue = new DataElement(attrValue.getDataType(),
attrValue.getValue());
break;
}
attrValues[i] = newAttrValue;
}
return new ServiceRecordImpl(device, attrIDs, attrValues);
}
}