package org.apache.onami.persist;

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
 */

import javax.naming.Context;
import javax.naming.NamingException;
import javax.naming.spi.InitialContextFactory;
import java.util.Hashtable;

/**
 * JNDI Context Factory for test.
 */
public class InitialContextFactoryStub implements InitialContextFactory {

  private static final ThreadLocal<Context> THREAD_LOCAL_CONTEXT = new ThreadLocal<>();

  static {
    System.setProperty(Context.INITIAL_CONTEXT_FACTORY, InitialContextFactoryStub.class.getName());
  }

  /**
   * {@inheritDoc}
   */
  public Context getInitialContext(Hashtable<?, ?> environment) throws NamingException {
    final Context context = THREAD_LOCAL_CONTEXT.get();
    if (context == null) {
      throw new NamingException("No context registered");
    }
    return context;
  }

  /**
   * Registers a context which will be returned when a lookup in the same thread is done.
   *
   * @param context the context to return for lookups made by the same thread.
   */
  public static void registerContext(Context context) {
    THREAD_LOCAL_CONTEXT.set(context);
  }

}
