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/* 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 org.activiti.engine.ActivitiIllegalArgumentException;
import org.activiti.engine.impl.interceptor.Command;
import org.activiti.engine.impl.interceptor.CommandContext;


/**
 * @author Tom Baeyens
 */
public class DeleteMembershipCmd implements Command, Serializable {

  private static final long serialVersionUID = 1L;
  String userId;
  String groupId;

  public DeleteMembershipCmd(String userId, String groupId) {
    this.userId = userId;
    this.groupId = groupId;
  }
  
  public Void execute(CommandContext commandContext) {
    if(userId == null) {
      throw new ActivitiIllegalArgumentException("userId is null");
    }
    if(groupId == null) {
      throw new ActivitiIllegalArgumentException("groupId is null");
    }
    
    commandContext
      .getMembershipIdentityManager()
      .deleteMembership(userId, groupId);
    
    return null;    
  }

}