org.camunda.bpm.engine.impl.cmd.AbstractWritableIdentityServiceCmd Maven / Gradle / Ivy

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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.io.Serializable;

import org.camunda.bpm.engine.impl.identity.WritableIdentityProvider;
import org.camunda.bpm.engine.impl.interceptor.Command;
import org.camunda.bpm.engine.impl.interceptor.CommandContext;

/**
 * @author Daniel Meyer
 *
 */
public abstract class AbstractWritableIdentityServiceCmd implements Command, Serializable {

  private static final long serialVersionUID = 1L;

  public final T execute(CommandContext commandContext) {
    
    // check identity service implementation
    if(!commandContext.getSessionFactories().containsKey(WritableIdentityProvider.class)) {
      throw new UnsupportedOperationException("This identity service implementation is read-only.");
    }
    
    T result = executeCmd(commandContext);
    return result; 
  }

  protected abstract T executeCmd(CommandContext commandContext);

}