/*
* 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;
/*
* Provides ServiceAttribute transaction functionality.
*/
public class ClientServiceAttributeTransaction extends SDPClientTransaction {
/* ServiceRecordHandle (BT Spec 1.2 Vol 3 page 138). */
int serviceRecordHandle;
/* AttributeIDList (BT Spec 1.2 Vol 3 page 139). */
DataElement attributeIDList;
/* AttributeList (BT Spec 1.2 Vol 3 page 140). */
byte[] attributes;
/*
* Constructs ServiceAttributeTransaction object.
*/
ClientServiceAttributeTransaction(JavaSDPClient client, int transactionID,
SDPResponseListener listener, int recordHandle,
int[] attrSet) {
super(client, SDPClientTransaction.SDP_SERVICE_ATTRIBUTE_REQUEST, transactionID, listener);
serviceRecordHandle = recordHandle;
attributeIDList = new DataElement(DataElement.DATSEQ);
for (int i = 0; i < attrSet.length; i++) {
attributeIDList.addElement(new DataElement(
DataElement.U_INT_2, attrSet[i]));
}
parameterLength = super.client.getConnection().getReaderWriter().getDataSize(attributeIDList) + 6;
}
/*
* Writes transaction-specific parameters into the PDU.
*
* @throws IOException when an I/O error occurs
*/
void writeParameters() throws IOException {
super.client.getConnection().getReaderWriter().writeInteger(serviceRecordHandle);
super.client.getConnection().getReaderWriter().writeShort((short)MAX_ATTRIBUTE_BYTE_COUNT);
super.client.getConnection().getReaderWriter().writeDataElement(attributeIDList);
}
/*
* Reads transaction-specific parameters from the PDU.
*
* @param length length of PDU's parameters
* @throws IOException when an I/O error occurs
*/
void readParameters(int length) throws IOException {
short byteCount = super.client.getConnection().getReaderWriter().readShort();
byte[] data = super.client.getConnection().getReaderWriter().readBytes(byteCount);
if (attributes == null) {
attributes = data;
} else {
byte[] temp = attributes;
attributes = new byte[temp.length + byteCount];
System.arraycopy(temp, 0, attributes, 0, temp.length);
System.arraycopy(data, 0, attributes, temp.length,
byteCount);
}
}
/*
* Completes the transaction by calling corresponding listener's
* method with the data retrieved.
*/
public void complete() {
DataElement attrList;
DataElementSerializer des = new DataElementSerializer();
try {
attrList = des.restore(attributes);
} catch (IOException e) {
listener.serviceAttributeResponse(null, null,
ssTransID);
return;
}
int size = attrList.getSize() / 2;
if (size == 0) {
listener.serviceAttributeResponse(null, null,
ssTransID);
return;
}
Enumeration elements = (Enumeration)attrList.getValue();
final int[] attrIDs = new int[size];
final DataElement[] attrValues = new DataElement[size];
for (int i = 0; elements.hasMoreElements(); i++) {
attrIDs[i] = (int)((DataElement)
elements.nextElement()).getLong();
attrValues[i] = ((DataElement)
elements.nextElement());
}
listener.serviceAttributeResponse(attrIDs, attrValues, ssTransID);
}
}