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.bpmn.behavior;
  
  import java.util.Collection;
  import java.util.Iterator;
  import org.activiti.engine.delegate.DelegateExecution;
  import org.activiti.engine.impl.context.Context;
  import org.activiti.engine.impl.delegate.InactiveActivityBehavior;
  import org.activiti.engine.impl.interceptor.CommandContext;
  import org.activiti.engine.impl.persistence.entity.ExecutionEntity;
  import org.activiti.engine.impl.persistence.entity.ExecutionEntityManager;
  import org.activiti.engine.impl.util.ExecutionGraphUtil;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  /**
   * Implementation of the Inclusive Gateway/OR gateway/inclusive data-based gateway as defined in the BPMN specification.
   *
  
  
  
   */
  public class InclusiveGatewayActivityBehavior extends GatewayActivityBehavior implements InactiveActivityBehavior {
  
      private static final long serialVersionUID = 1L;
  
      private static Logger logger = LoggerFactory.getLogger(InclusiveGatewayActivityBehavior.class.getName());
  
      @Override
      public void execute(DelegateExecution execution) {
          // The join in the inclusive gateway works as follows:
          // When an execution enters it, it is inactivated.
          // All the inactivated executions stay in the inclusive gateway
          // until ALL executions that CAN reach the inclusive gateway have reached it.
          //
          // This check is repeated on execution changes until the inactivated
          // executions leave the gateway.
  
          execution.inactivate();
          executeInclusiveGatewayLogic((ExecutionEntity) execution);
      }
  
      @Override
      public void executeInactive(ExecutionEntity executionEntity) {
          executeInclusiveGatewayLogic(executionEntity);
      }
  
      protected void executeInclusiveGatewayLogic(ExecutionEntity execution) {
          CommandContext commandContext = Context.getCommandContext();
          ExecutionEntityManager executionEntityManager = commandContext.getExecutionEntityManager();
  
          lockFirstParentScope(execution);
  
          Collection<ExecutionEntity> allExecutions = executionEntityManager.findChildExecutionsByProcessInstanceId(
              execution.getProcessInstanceId()
          );
          Iterator<ExecutionEntity> executionIterator = allExecutions.iterator();
          boolean oneExecutionCanReachGatewayInstance = false;
          while (!oneExecutionCanReachGatewayInstance && executionIterator.hasNext()) {
              ExecutionEntity executionEntity = executionIterator.next();
              if (!executionEntity.getActivityId().equals(execution.getCurrentActivityId())) {
                  if (
                      isSameExecutionPath(execution, executionEntity) &&
                      ExecutionGraphUtil.isReachable(
                          execution.getProcessDefinitionId(),
                          executionEntity.getActivityId(),
                          execution.getCurrentActivityId()
                      )
                  ) {
                      oneExecutionCanReachGatewayInstance = true;
                  }
              } else if (executionEntity.getId().equals(execution.getId()) && executionEntity.isActive()) {
                  // Special case: the execution has reached the inc gw, but the operation hasn't been executed yet for that execution
                  oneExecutionCanReachGatewayInstance = true;
              }
          }
  
          // If no execution can reach the gateway, the gateway activates and executes fork behavior
          if (!oneExecutionCanReachGatewayInstance) {
              logger.debug("Inclusive gateway cannot be reached by any execution and is activated");
  
              // Kill all executions here (except the incoming)
              Collection<ExecutionEntity> executionsInGateway =
                  executionEntityManager.findInactiveExecutionsByActivityIdAndProcessInstanceId(
                      execution.getCurrentActivityId(),
                      execution.getProcessInstanceId()
                  );
              for (ExecutionEntity executionEntityInGateway : executionsInGateway) {
                  if (
                      !executionEntityInGateway.getId().equals(execution.getId()) &&
                      executionEntityInGateway.getParentId().equals(execution.getParentId())
                  ) {
                      commandContext.getHistoryManager().recordActivityEnd(executionEntityInGateway, null);
                      executionEntityManager.deleteExecutionAndRelatedData(executionEntityInGateway, null);
                  }
              }
  
              // Leave
              commandContext.getAgenda().planTakeOutgoingSequenceFlowsOperation(execution, true);
          }
      }
  
      private boolean isSameExecutionPath(ExecutionEntity gatewayExecution, ExecutionEntity activeExecution) {
          return activeExecution.getParentId().equals(gatewayExecution.getParentId());
      }
  }
  