DBTGattService.java

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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.BTGattService;
 
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 final BTGattService clone()
    { throw new UnsupportedOperationException(); } // FIXME
 
    @Override
    public BTGattChar findGattChar(final String char_uuid) {
        final DBTDevice device = wbr_device.get();
        if( null == device ) {
            return null;
        }
        final int characteristicSize = charList.size();
        for(int charIdx = 0; charIdx < characteristicSize; charIdx++ ) {
            final DBTGattChar characteristic = (DBTGattChar) charList.get(charIdx);
            if( characteristic.getUUID().equals(char_uuid) ) {
                return characteristic;
            }
        }
        return null;
    }
 
    @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( !isNativeValid() ) {
            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);
}