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/**
* Author: Sven Gothel <sgothel@jausoft.com>
* Copyright (c) 2020 Gothel Software e.K.
* Copyright (c) 2020 ZAFENA AB
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
package jau.direct_bt;
import java.lang.ref.WeakReference;
import java.util.List;
import org.direct_bt.BTDevice;
import org.direct_bt.BTGattChar;
import org.direct_bt.BTGattDesc;
import org.direct_bt.BTGattService;
import org.direct_bt.BTObject;
import org.direct_bt.BTType;
public class DBTGattService extends DBTObject implements BTGattService
{
/** Service's device weak back-reference */
final WeakReference<DBTDevice> wbr_device;
private final boolean isPrimary;
private final String type_uuid;
private final short handleStart;
private final short handleEnd;
/* pp */ final List<BTGattChar> charList;
/* pp */ DBTGattService(final long nativeInstance, final DBTDevice device, final boolean isPrimary,
final String type_uuid, final short handleStart, final short handleEnd)
{
super(nativeInstance, compHash(handleStart, handleEnd));
this.wbr_device = new WeakReference<DBTDevice>(device);
this.isPrimary = isPrimary;
this.type_uuid = type_uuid;
this.handleStart = handleStart;
this.handleEnd = handleEnd;
this.charList = getCharsImpl();
}
@Override
public boolean equals(final Object obj)
{
if (obj == null || !(obj instanceof DBTGattService)) {
return false;
}
final DBTGattService other = (DBTGattService)obj;
return handleStart == other.handleStart && handleEnd == other.handleEnd; /** unique attribute handles */
}
@Override
public String getUUID() { return type_uuid; }
@Override
public BTType getBluetoothType() { return class_type(); }
static BTType class_type() { return BTType.GATT_SERVICE; }
@Override
public final BTGattService clone()
{ throw new UnsupportedOperationException(); } // FIXME
@Override
public BTGattChar find(final String UUID, final long timeoutMS) {
if( !checkServiceCache() ) {
return null;
}
return (DBTGattChar) findInCache(UUID, BTType.GATT_CHARACTERISTIC);
}
@Override
public BTGattChar find(final String UUID) {
return find(UUID, 0);
}
@Override
public final BTDevice getDevice() { return wbr_device.get(); }
@Override
public final boolean getPrimary() { return isPrimary; }
@Override
public final List<BTGattChar> getChars() { return charList; }
/**
* Returns the service start handle.
* <p>
* Attribute handles are unique for each device (server) (BT Core Spec v5.2: Vol 3, Part F Protocol..: 3.2.2 Attribute Handle).
* </p>
*/
public final short getHandleStart() { return handleStart; }
/**
* Returns the service end handle.
* <p>
* Attribute handles are unique for each device (server) (BT Core Spec v5.2: Vol 3, Part F Protocol..: 3.2.2 Attribute Handle).
* </p>
*/
public final short getHandleEnd() { return handleEnd; }
@Override
public final String toString() {
if( !isValid() ) {
return "Service" + "\u271D" + "[uuid "+getUUID()+", handles [0x"+Integer.toHexString(handleStart)+".."+Integer.toHexString(handleEnd)+"]]";
}
return toStringImpl();
}
/* Native method calls: */
private native String toStringImpl();
private native List<BTGattChar> getCharsImpl();
@Override
protected native void deleteImpl(long nativeInstance);
/* local functionality */
/* pp */ boolean checkServiceCache() {
final DBTDevice device = wbr_device.get();
return null != device && device.checkServiceCache(false);
}
/**
* Returns the matching {@link DBTObject} from the internal cache if found,
* otherwise {@code null}.
* <p>
* The returned {@link DBTObject} may be of type
* <ul>
* <li>{@link DBTGattChar}</li>
* <li>{@link DBTGattDesc}</li>
* </ul>
* or alternatively in {@link BTObject} space
* <ul>
* <li>{@link BTType#GATT_CHARACTERISTIC} -> {@link BTGattChar}</li>
* <li>{@link BTType#GATT_DESCRIPTOR} -> {@link BTGattDesc}</li>
* </ul>
* </p>
* @param uuid UUID of the desired
* {@link BTType#GATT_CHARACTERISTIC characteristic} or {@link BTType#GATT_DESCRIPTOR descriptor} to be found.
* Maybe {@code null}, in which case the first object of the desired type is being returned - if existing.
* @param type specify the type of the object to be found, either
* {@link BTType#GATT_CHARACTERISTIC characteristic}
* or {@link BTType#GATT_DESCRIPTOR descriptor}.
* {@link BTType#NONE none} means anything.
*/
/* pp */ DBTObject findInCache(final String uuid, final BTType type) {
final boolean anyType = BTType.NONE == type;
final boolean charType = BTType.GATT_CHARACTERISTIC== type;
final boolean descType = BTType.GATT_DESCRIPTOR == type;
if( !anyType && !charType && !descType ) {
return null;
}
final int characteristicSize = charList.size();
for(int charIdx = 0; charIdx < characteristicSize; charIdx++ ) {
final DBTGattChar characteristic = (DBTGattChar) charList.get(charIdx);
if( ( anyType || charType ) && ( null == uuid || characteristic.getUUID().equals(uuid) ) ) {
return characteristic;
}
if( anyType || descType ) {
final DBTObject dbtObj = characteristic.findInCache(uuid, type);
if( null != dbtObj ) {
return dbtObj;
}
}
}
return null;
}
}
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