Android Open Source - smsgateway-android Hash Map Container

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License

The source code is released under:

GNU General Public License

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Java Source Code

/*
 */*w ww  . j a  va2  s .co  m*/
 * suco: Mini IoC framework a-la-guice style for GWT
 *
 * (c) 2009 The suco development team (see CREDITS for details)
 * This file is part of emite.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

package com.calclab.suco.client.ioc;

import java.util.HashMap;

import com.calclab.suco.client.log.Logger;

/**
 * A basic implementation of container
 */
@SuppressWarnings("serial")
public class HashMapContainer extends HashMap<Class<?>, Provider<?>> implements
    Container {

  public HashMapContainer() {
  }

  public <T> T getInstance(final Class<T> componentKey) {
    return getProvider(componentKey).get();
  }

  @SuppressWarnings("unchecked")
  public <T> Provider<T> getProvider(final Class<T> componentKey) {
    final Provider<T> provider = (Provider<T>) get(componentKey);
    if (provider == null) {
      final String message = Logger
          .format(
              "getProvider failed: component of type {0} not registered. Registered component keys: [{1}]",
              componentKey, Logger.toString(keySet()));
      throw new RuntimeException(message);
    }
    return provider;
  }

  public boolean hasProvider(final Class<?> componentKey) {
    return containsKey(componentKey);
  }

  public <T> Provider<T> registerProvider(final Decorator decorator,
      final Class<T> componentType, final Provider<T> provider) {
    if (containsKey(componentType)) {
      throw new RuntimeException(Logger.format(
          "Provider of type {0} already registered.", componentType));
    }
    Logger.debug("Registering provider of type: {0}", componentType);
    final Provider<T> decoratedProvider = decorator == null ? provider
        : decorator.decorate(componentType, provider);
    put(componentType, decoratedProvider);
    return decoratedProvider;
  }

  @SuppressWarnings("unchecked")
  public <T> Provider<T> removeProvider(final Class<T> componentKey) {
    return (Provider<T>) remove(componentKey);
  }
}

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