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   1 /**
   2  * Copyright (c) 2010-2024 Contributors to the openHAB project
   3  *
   4  * See the NOTICE file(s) distributed with this work for additional
   5  * information.
   6  *
   7  * This program and the accompanying materials are made available under the
   8  * terms of the Eclipse Public License 2.0 which is available at
   9  * http://www.eclipse.org/legal/epl-2.0
  10  *
  11  * SPDX-License-Identifier: EPL-2.0
  12  */
  13 package org.openhab.binding.serial.internal;
  14
  15 import static org.openhab.binding.serial.internal.SerialBindingConstants.THING_TYPE_BRIDGE;
  16 import static org.openhab.binding.serial.internal.SerialBindingConstants.THING_TYPE_DEVICE;
  17
  18 import java.util.Set;
  19
  20 import org.eclipse.jdt.annotation.NonNullByDefault;
  21 import org.eclipse.jdt.annotation.Nullable;
  22 import org.openhab.binding.serial.internal.handler.SerialBridgeHandler;
  23 import org.openhab.binding.serial.internal.handler.SerialDeviceHandler;
  24 import org.openhab.binding.serial.internal.transform.CascadedValueTransformationImpl;
  25 import org.openhab.binding.serial.internal.transform.NoOpValueTransformation;
  26 import org.openhab.binding.serial.internal.transform.ValueTransformation;
  27 import org.openhab.binding.serial.internal.transform.ValueTransformationProvider;
  28 import org.openhab.core.io.transport.serial.SerialPortManager;
  29 import org.openhab.core.thing.Bridge;
  30 import org.openhab.core.thing.Thing;
  31 import org.openhab.core.thing.ThingTypeUID;
  32 import org.openhab.core.thing.binding.BaseThingHandlerFactory;
  33 import org.openhab.core.thing.binding.ThingHandler;
  34 import org.openhab.core.thing.binding.ThingHandlerFactory;
  35 import org.openhab.core.transform.TransformationHelper;
  36 import org.osgi.service.component.annotations.Activate;
  37 import org.osgi.service.component.annotations.Component;
  38 import org.osgi.service.component.annotations.Reference;
  39
  40 /**
  41  * The {@link SerialHandlerFactory} is responsible for creating things and thing
  42  * handlers.
  43  *
  44  * @author Mike Major - Initial contribution
  45  */
  46 @NonNullByDefault
  47 @Component(configurationPid = "binding.serial", service = ThingHandlerFactory.class)
  48 public class SerialHandlerFactory extends BaseThingHandlerFactory implements ValueTransformationProvider {
  49
  50     private static final Set<ThingTypeUID> SUPPORTED_THING_TYPES_UIDS = Set.of(THING_TYPE_BRIDGE, THING_TYPE_DEVICE);
  51
  52     private final SerialPortManager serialPortManager;
  53
  54     @Activate
  55     public SerialHandlerFactory(@Reference final SerialPortManager serialPortManager) {
  56         this.serialPortManager = serialPortManager;
  57     }
  58
  59     @Override
  60     public boolean supportsThingType(final ThingTypeUID thingTypeUID) {
  61         return SUPPORTED_THING_TYPES_UIDS.contains(thingTypeUID);
  62     }
  63
  64     @Override
  65     protected @Nullable ThingHandler createHandler(final Thing thing) {
  66         final ThingTypeUID thingTypeUID = thing.getThingTypeUID();
  67
  68         if (THING_TYPE_BRIDGE.equals(thingTypeUID)) {
  69             return new SerialBridgeHandler((Bridge) thing, serialPortManager);
  70         } else if (THING_TYPE_DEVICE.equals(thingTypeUID)) {
  71             return new SerialDeviceHandler(thing, this);
  72         }
  73
  74         return null;
  75     }
  76
  77     @Override
  78     public ValueTransformation getValueTransformation(@Nullable final String pattern) {
  79         if (pattern == null) {
  80             return NoOpValueTransformation.getInstance();
  81         }
  82         return new CascadedValueTransformationImpl(pattern,
  83                 name -> TransformationHelper.getTransformationService(bundleContext, name));
  84     }
  85 }