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The Camunda BPMN engine + configurable support for GraalVM and support for CockroachDB.

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/*
 * Copyright Camunda Services GmbH and/or licensed to Camunda Services GmbH
 * under one or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information regarding copyright
 * ownership. Camunda licenses this file to you under the Apache License,
 * Version 2.0; 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.camunda.bpm.engine.impl.db;

import org.camunda.bpm.engine.ProcessEngines;
import org.camunda.bpm.engine.impl.ProcessEngineImpl;
import org.camunda.bpm.engine.impl.interceptor.Command;
import org.camunda.bpm.engine.impl.interceptor.CommandContext;
import org.camunda.bpm.engine.impl.interceptor.CommandExecutor;


/**
 * @author Tom Baeyens
 */
public class DbSchemaDrop {

  public static void main(String[] args) {
    ProcessEngineImpl processEngine = (ProcessEngineImpl) ProcessEngines.getDefaultProcessEngine();
    CommandExecutor commandExecutor = processEngine.getProcessEngineConfiguration().getCommandExecutorTxRequired();
    commandExecutor.execute(new Command (){
      public Object execute(CommandContext commandContext) {
        commandContext
          .getSession(PersistenceSession.class)
          .dbSchemaDrop();
        return null;
      }
    });
    processEngine.close();
  }
}