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/**
 * Copyright Terracotta, Inc.
 * 
 * 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.ehcache.integrations.shiro;

import org.apache.shiro.cache.Cache;

import java.util.AbstractSet;
import java.util.Collection;
import java.util.Iterator;

abstract class EhcacheSetWrapper extends AbstractSet {

  private final Collection delegate;

  EhcacheSetWrapper(Cache shiroCache, org.ehcache.Cache ehcacheCache) {
    delegate = new EhcacheCollectionWrapper(shiroCache, ehcacheCache) {
      @Override
      public Iterator iterator() {
        throw new IllegalStateException("Should not use this iterator");
      }
    };
  }

  public int size() {
    return delegate.size();
  }

  @Override
  public boolean isEmpty() {
    return delegate.isEmpty();
  }

  @Override
  public boolean addAll(Collection c) {
    return delegate.addAll(c);
  }

  @Override
  public boolean remove(Object o) {
    return delegate.remove(o);
  }

  @Override
  public boolean removeAll(Collection c) {
    return delegate.retainAll(c);
  }

  @Override
  public boolean retainAll(Collection c) {
    return delegate.retainAll(c);
  }
}