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 /*
  * Copyright (C) 2007 The Guava 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 com.google.common.collect;
A mutable class-to-instance map backed by an arbitrary user-provided map. See also com.google.common.collect.ImmutableClassToInstanceMap.

See the Guava User Guide article on ClassToInstanceMap.

Author(s):
Kevin Bourrillion
Since:
2.0 (imported from Google Collections Library)
public final class MutableClassToInstanceMap<B>
    extends ConstrainedMap<Class<? extends B>, B>
    implements ClassToInstanceMap<B> {

  
Returns a new MutableClassToInstanceMap instance backed by a java.util.HashMap using the default initial capacity and load factor.
  public static <B> MutableClassToInstanceMap<B> create() {
    return new MutableClassToInstanceMap<B>(
        new HashMap<Class<? extends B>, B>());
  }

  
Returns a new MutableClassToInstanceMap instance backed by a given empty backingMap. The caller surrenders control of the backing map, and thus should not allow any direct references to it to remain accessible.
  public static <B> MutableClassToInstanceMap<B> create(
      Map<Class<? extends B>, B> backingMap) {
    return new MutableClassToInstanceMap<B>(backingMap);
  }
  private MutableClassToInstanceMap(Map<Class<? extends B>, B> delegate) {
    super(delegate);
  }
  private static final MapConstraint<Class<?>, ObjectVALUE_CAN_BE_CAST_TO_KEY
      = new MapConstraint<Class<?>, Object>() {
    @Override
    public void checkKeyValue(Class<?> keyObject value) {
      cast(keyvalue);
    }
  };
  public <T extends B> T putInstance(Class<T> type, T value) {
    return cast(typeput(typevalue));
  }
  public <T extends B> T getInstance(Class<T> type) {
    return cast(typeget(type));
  }
  private static <B, T extends B> T cast(Class<T> type, B value) {
    return Primitives.wrap(type).cast(value);
  }
  private static final long serialVersionUID = 0;
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