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.engine.impl.el.variable;
  
  import com.fasterxml.jackson.databind.JsonNode;
  import com.fasterxml.jackson.databind.ObjectMapper;
  import java.util.List;
  import org.activiti.engine.delegate.VariableScope;
  import org.activiti.engine.impl.persistence.entity.VariableInstance;
  import org.activiti.engine.impl.variable.JsonType;
  import org.activiti.engine.impl.variable.LongJsonType;
  
  public class VariableElResolver implements VariableScopeItemELResolver {
  
      private final ObjectMapper objectMapper;
  
      public VariableElResolver(ObjectMapper objectMapper) {
          this.objectMapper = objectMapper;
      }
  
      @Override
      public boolean canResolve(String property, VariableScope variableScope) {
          return variableScope.hasVariable(property);
      }
  
      @Override
      public Object resolve(String property, VariableScope variableScope) {
          VariableInstance variableInstance = variableScope.getVariableInstance(property);
          Object value = variableInstance.getValue();
          if (hasJsonType(variableInstance) && (value instanceof JsonNode) && ((JsonNode) value).isArray()) {
              return objectMapper.convertValue(value, List.class);
          } else {
              return value;
          }
      }
  
      private boolean hasJsonType(VariableInstance variableInstance) {
          return (
              JsonType.JSON.equals(variableInstance.getTypeName()) ||
              LongJsonType.LONG_JSON.equals(variableInstance.getTypeName())
          );
      }
  }
  