content: /*
   * Copyright 2010-2025 Hyland Software, Inc. and its affiliates.
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package org.activiti.api.runtime.conf.impl;
  
  import com.fasterxml.jackson.core.Version;
  import com.fasterxml.jackson.databind.BeanDescription;
  import com.fasterxml.jackson.databind.DeserializationConfig;
  import com.fasterxml.jackson.databind.JavaType;
  import com.fasterxml.jackson.databind.Module;
  import com.fasterxml.jackson.databind.jsontype.NamedType;
  import com.fasterxml.jackson.databind.module.SimpleAbstractTypeResolver;
  import com.fasterxml.jackson.databind.module.SimpleModule;
  import org.activiti.api.model.shared.EmptyResult;
  import org.activiti.api.model.shared.Payload;
  import org.activiti.api.model.shared.Result;
  import org.activiti.api.model.shared.model.VariableInstance;
  import org.activiti.api.runtime.model.impl.VariableInstanceImpl;
  import org.springframework.boot.autoconfigure.AutoConfiguration;
  import org.springframework.context.annotation.Bean;
  import org.springframework.context.annotation.PropertySource;
  
  @AutoConfiguration
  @PropertySource("classpath:conf/rest-jackson-configuration.properties") //load default jackson configuration
  public class CommonModelAutoConfiguration {
  
      //this bean will be automatically injected inside boot's ObjectMapper
      @Bean
      public Module customizeCommonModelObjectMapper() {
          SimpleModule module = new SimpleModule("mapCommonModelInterfaces", Version.unknownVersion());
          SimpleAbstractTypeResolver resolver = new SimpleAbstractTypeResolver() {
              //this is a workaround for https://github.com/FasterXML/jackson-databind/issues/2019
              //once version 2.9.6 is related we can remove this @override method
              @Override
              public JavaType resolveAbstractType(DeserializationConfig config, BeanDescription typeDesc) {
                  return findTypeMapping(config, typeDesc.getType());
              }
          };
  
          resolver.addMapping(VariableInstance.class, VariableInstanceImpl.class);
  
          module.setAbstractTypes(resolver);
  
          module.setMixInAnnotation(Payload.class, PayloadMixIn.class);
          module.setMixInAnnotation(Result.class, ResultMixIn.class);
  
          module.registerSubtypes(new NamedType(EmptyResult.class, EmptyResult.class.getSimpleName()));
  
          return module;
      }
  }
  