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.cmd;
  
  import java.io.Serializable;
  import java.util.Collection;
  import java.util.Map;
  import java.util.Map.Entry;
  import org.activiti.engine.ActivitiIllegalArgumentException;
  import org.activiti.engine.ActivitiObjectNotFoundException;
  import org.activiti.engine.impl.interceptor.Command;
  import org.activiti.engine.impl.interceptor.CommandContext;
  import org.activiti.engine.impl.persistence.entity.ExecutionEntity;
  import org.activiti.engine.impl.persistence.entity.VariableInstance;
  import org.activiti.engine.runtime.Execution;
  
  public class GetExecutionVariableInstancesCmd implements Command<Map<String, VariableInstance>>, Serializable {
  
      private static final long serialVersionUID = 1L;
      protected String executionId;
      protected Collection<String> variableNames;
      protected boolean isLocal;
  
      public GetExecutionVariableInstancesCmd(String executionId, Collection<String> variableNames, boolean isLocal) {
          this.executionId = executionId;
          this.variableNames = variableNames;
          this.isLocal = isLocal;
      }
  
      @Override
      public Map<String, VariableInstance> execute(CommandContext commandContext) {
          // Verify existance of execution
          if (executionId == null) {
              throw new ActivitiIllegalArgumentException("executionId is null");
          }
  
          ExecutionEntity execution = commandContext.getExecutionEntityManager().findById(executionId);
  
          if (execution == null) {
              throw new ActivitiObjectNotFoundException("execution " + executionId + " doesn't exist", Execution.class);
          }
  
          Map<String, VariableInstance> variables = getVariable(execution, commandContext);
  
          if (variables != null) {
              for (Entry<String, VariableInstance> entry : variables.entrySet()) {
                  if (entry.getValue() != null) {
                      entry.getValue().getValue();
                  }
              }
          }
  
          return variables;
      }
  
      protected Map<String, VariableInstance> getVariable(ExecutionEntity execution, CommandContext commandContext) {
          Map<String, VariableInstance> variables = null;
  
          if (variableNames == null || variableNames.isEmpty()) {
              // Fetch all
              if (isLocal) {
                  variables = execution.getVariableInstancesLocal();
              } else {
                  variables = execution.getVariableInstances();
              }
          } else {
              // Fetch specific collection of variables
              if (isLocal) {
                  variables = execution.getVariableInstancesLocal(variableNames, false);
              } else {
                  variables = execution.getVariableInstances(variableNames, false);
              }
          }
          return variables;
      }
  }
  