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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.cmd;

import java.util.Collections;

import org.camunda.bpm.engine.history.UserOperationLogEntry;
import org.camunda.bpm.engine.impl.interceptor.Command;
import org.camunda.bpm.engine.impl.interceptor.CommandContext;
import org.camunda.bpm.engine.impl.persistence.entity.AuthorizationManager;
import org.camunda.bpm.engine.impl.persistence.entity.PropertyChange;
import org.camunda.bpm.engine.impl.persistence.entity.PropertyEntity;
import org.camunda.bpm.engine.impl.persistence.entity.PropertyManager;

/**
 * 
Command which can be used for setting the value of a property

 *
 * @author Daniel Meyer
 *
 */
public class SetPropertyCmd implements Command {

  protected String name;
  protected String value;

  public SetPropertyCmd(String name, String value) {
    this.name = name;
    this.value = value;
  }

  public Object execute(CommandContext commandContext) {
    AuthorizationManager authorizationManager = commandContext.getAuthorizationManager();
    authorizationManager.checkCamundaAdmin();

    final PropertyManager propertyManager = commandContext.getPropertyManager();

    PropertyEntity property = propertyManager
      .findPropertyById(name);
    String operation = null;
    if(property != null) {
      // update
      property.setValue(value);
      operation = UserOperationLogEntry.OPERATION_TYPE_UPDATE;
    } else {
      // create
      property = new PropertyEntity(name, value);
      propertyManager.insert(property);
      operation = UserOperationLogEntry.OPERATION_TYPE_CREATE;
    }
    
    commandContext.getOperationLogManager().logPropertyOperation(operation, 
        Collections.singletonList(new PropertyChange("name", null, name)));

    return null;
  }

}
 















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