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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 org.activiti.engine.impl.interceptor.Command;
import org.activiti.engine.impl.interceptor.CommandContext;
import org.activiti.engine.task.Comment;
import org.apache.commons.lang3.StringUtils;

import java.io.Serializable;
import java.util.List;

/**

 */
public class GetProcessInstanceCommentsCmd implements Command>, Serializable {

  private static final long serialVersionUID = 1L;
  protected String processInstanceId;
  protected String type;

  public GetProcessInstanceCommentsCmd(String processInstanceId) {
    this.processInstanceId = processInstanceId;
  }

  public GetProcessInstanceCommentsCmd(String processInstanceId, String type) {
    this.processInstanceId = processInstanceId;
    this.type = type;
  }

  @SuppressWarnings("unchecked")
  public List execute(CommandContext commandContext) {
    if (StringUtils.isNotBlank(type)) {
      List commentsByProcessInstanceId = commandContext.getCommentEntityManager().findCommentsByProcessInstanceId(processInstanceId, type);
      return commentsByProcessInstanceId;
    } else {
      return commandContext.getCommentEntityManager().findCommentsByProcessInstanceId(processInstanceId);
    }
  }
}