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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.persistence;

import org.activiti.engine.ActivitiException;
import org.activiti.engine.impl.interceptor.CommandContext;
import org.activiti.engine.impl.interceptor.Session;
import org.activiti.engine.impl.interceptor.SessionFactory;

/**


 */
public class GenericManagerFactory implements SessionFactory {

  protected Class typeClass;
  protected Class implementationClass;
  
  public GenericManagerFactory(Class typeClass, Class implementationClass) {
    this.typeClass = typeClass;
    this.implementationClass = implementationClass;
  }

  public GenericManagerFactory(Class implementationClass) {
    this(implementationClass, implementationClass);
  }

  public Class getSessionType() {
    return typeClass;
  }

  public Session openSession(CommandContext commandContext) {
    try {
      return implementationClass.newInstance();
    } catch (Exception e) {
      throw new ActivitiException("couldn't instantiate " + implementationClass.getName() + ": " + e.getMessage(), e);
    }
  }
}