1 files changed, 192 insertions, 0 deletions
diff --git a/java/jau/direct_bt/DBTGattService.java b/java/jau/direct_bt/DBTGattService.java
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+++ b/java/jau/direct_bt/DBTGattService.java
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+/**
+ * Author: Sven Gothel <[email protected]>
+ * 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 direct_bt.tinyb;
+
+import java.lang.ref.WeakReference;
+import java.util.List;
+
+import org.tinyb.BluetoothDevice;
+import org.tinyb.BluetoothGattCharacteristic;
+import org.tinyb.BluetoothGattDescriptor;
+import org.tinyb.BluetoothGattService;
+import org.tinyb.BluetoothObject;
+import org.tinyb.BluetoothType;
+
+public class DBTGattService extends DBTObject implements BluetoothGattService
+{
+    /** 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<BluetoothGattCharacteristic> characteristicList;
+
+   /* 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.characteristicList = getCharacteristicsImpl();
+    }
+
+    @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 BluetoothType getBluetoothType() { return class_type(); }
+
+    static BluetoothType class_type() { return BluetoothType.GATT_SERVICE; }
+
+    @Override
+    public final BluetoothGattService clone()
+    { throw new UnsupportedOperationException(); } // FIXME
+
+    @Override
+    public BluetoothGattCharacteristic find(final String UUID, final long timeoutMS) {
+        if( !checkServiceCache() ) {
+            return null;
+        }
+        return (DBTGattCharacteristic) findInCache(UUID, BluetoothType.GATT_CHARACTERISTIC);
+    }
+
+    @Override
+    public BluetoothGattCharacteristic find(final String UUID) {
+        return find(UUID, 0);
+    }
+
+    @Override
+    public final BluetoothDevice getDevice() { return wbr_device.get(); }
+
+    @Override
+    public final boolean getPrimary() { return isPrimary; }
+
+    @Override
+    public final List<BluetoothGattCharacteristic> getCharacteristics() { return characteristicList; }
+
+    /**
+     * 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<BluetoothGattCharacteristic> getCharacteristicsImpl();
+
+    @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 DBTGattCharacteristic}</li>
+     *   <li>{@link DBTGattDescriptor}</li>
+     * </ul>
+     * or alternatively in {@link BluetoothObject} space
+     * <ul>
+     *   <li>{@link BluetoothType#GATT_CHARACTERISTIC} -> {@link BluetoothGattCharacteristic}</li>
+     *   <li>{@link BluetoothType#GATT_DESCRIPTOR} -> {@link BluetoothGattDescriptor}</li>
+     * </ul>
+     * </p>
+     * @param uuid UUID of the desired
+     * {@link BluetoothType#GATT_CHARACTERISTIC characteristic} or {@link BluetoothType#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 BluetoothType#GATT_CHARACTERISTIC characteristic}
+     * or {@link BluetoothType#GATT_DESCRIPTOR descriptor}.
+     * {@link BluetoothType#NONE none} means anything.
+     */
+    /* pp */ DBTObject findInCache(final String uuid, final BluetoothType type) {
+        final boolean anyType = BluetoothType.NONE == type;
+        final boolean charType = BluetoothType.GATT_CHARACTERISTIC== type;
+        final boolean descType = BluetoothType.GATT_DESCRIPTOR == type;
+
+        if( !anyType && !charType && !descType ) {
+            return null;
+        }
+        final int characteristicSize = characteristicList.size();
+        for(int charIdx = 0; charIdx < characteristicSize; charIdx++ ) {
+            final DBTGattCharacteristic characteristic = (DBTGattCharacteristic) characteristicList.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;
+    }
+
+}