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/**
 * Copyright (C) 2012-2014 the original author or authors.
 *
 * 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 ninja.appengine;

import com.google.inject.Inject;
import com.google.inject.Provider;
import com.google.inject.persist.PersistService;
import com.google.inject.persist.UnitOfWork;
import javax.persistence.EntityManager;
import org.aopalliance.intercept.MethodInterceptor;
import org.aopalliance.intercept.MethodInvocation;

public class AppEngineEnvironmentInterceptor implements MethodInterceptor {

    final Provider ninjaAppengineEnvironment;

    @Inject
    public AppEngineEnvironmentInterceptor(
            Provider ninjaAppengineEnvironment) {
        this.ninjaAppengineEnvironment = ninjaAppengineEnvironment;
    }

    @Override
    public Object invoke(MethodInvocation invocation) throws Throwable {

        ninjaAppengineEnvironment.get().initOrSkip();
        
        return invocation.proceed();

    }

}