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   1 /**
   2  * Copyright (c) 2010-2023 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.lametrictime.internal.api.common.impl;
  14
  15 import org.eclipse.jdt.annotation.NonNullByDefault;
  16 import org.openhab.binding.lametrictime.internal.api.common.impl.typeadapters.ActionTypeAdapterFactory;
  17 import org.openhab.binding.lametrictime.internal.api.common.impl.typeadapters.ApplicationTypeAdapterFactory;
  18 import org.openhab.binding.lametrictime.internal.api.common.impl.typeadapters.UpdateActionTypeAdapterFactory;
  19 import org.openhab.binding.lametrictime.internal.api.common.impl.typeadapters.imported.JSR310TypeAdapters;
  20 import org.openhab.binding.lametrictime.internal.api.common.impl.typeadapters.imported.RuntimeTypeAdapterFactory;
  21 import org.openhab.binding.lametrictime.internal.api.local.dto.BooleanParameter;
  22 import org.openhab.binding.lametrictime.internal.api.local.dto.IntegerParameter;
  23 import org.openhab.binding.lametrictime.internal.api.local.dto.Parameter;
  24 import org.openhab.binding.lametrictime.internal.api.local.dto.StringParameter;
  25
  26 import com.google.gson.FieldNamingPolicy;
  27 import com.google.gson.Gson;
  28 import com.google.gson.GsonBuilder;
  29
  30 /**
  31  * Class for json generation support.
  32  *
  33  * @author Gregory Moyer - Initial contribution
  34  */
  35 @NonNullByDefault
  36 public class GsonGenerator {
  37     public static Gson create() {
  38         return create(false);
  39     }
  40
  41     public static Gson create(boolean prettyPrint) {
  42         GsonBuilder builder = new GsonBuilder().setFieldNamingPolicy(FieldNamingPolicy.LOWER_CASE_WITH_UNDERSCORES)
  43                 .registerTypeAdapterFactory(new ApplicationTypeAdapterFactory())
  44                 .registerTypeAdapterFactory(new ActionTypeAdapterFactory())
  45                 .registerTypeAdapterFactory(new UpdateActionTypeAdapterFactory())
  46                 .registerTypeAdapterFactory(RuntimeTypeAdapterFactory.of(Parameter.class, "data_type")
  47                         .registerSubtype(BooleanParameter.class, "bool")
  48                         .registerSubtype(StringParameter.class, "string")
  49                         .registerSubtype(IntegerParameter.class, "int"));
  50
  51         // add Java 8 Time API support
  52         JSR310TypeAdapters.registerJSR310TypeAdapters(builder);
  53
  54         if (prettyPrint) {
  55             builder.setPrettyPrinting();
  56         }
  57
  58         return builder.create();
  59     }
  60
  61     // @formatter:off
  62     private GsonGenerator() {}
  63     // @formatter:on
  64 }