/*
* Copyright 2014 Goldman Sachs.
*
* 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.gs.collections.impl.multimap.list;
import java.io.Externalizable;
import com.gs.collections.api.block.predicate.Predicate2;
import com.gs.collections.api.list.MutableList;
import com.gs.collections.api.map.MutableMap;
import com.gs.collections.api.multimap.Multimap;
import com.gs.collections.api.multimap.bag.MutableBagMultimap;
import com.gs.collections.api.tuple.Pair;
import com.gs.collections.impl.list.mutable.MultiReaderFastList;
import com.gs.collections.impl.map.mutable.ConcurrentHashMap;
import com.gs.collections.impl.utility.Iterate;
public final class MultiReaderFastListMultimap<K, V>
extends AbstractMutableListMultimap<K, V> implements Externalizable
{
private static final long serialVersionUID = 1L;
// Default from FastList
private static final int DEFAULT_CAPACITY = 1;
private int initialListCapacity;
public MultiReaderFastListMultimap()
{
this.initialListCapacity = DEFAULT_CAPACITY;
}
public MultiReaderFastListMultimap(int distinctKeys, int valuesPerKey)
{
super(Math.max(distinctKeys * 2, 16));
if (distinctKeys < 0 || valuesPerKey < 0)
{
throw new IllegalArgumentException("Both arguments must be positive.");
}
this.initialListCapacity = valuesPerKey;
}
public MultiReaderFastListMultimap(Multimap<? extends K, ? extends V> multimap)
{
this(
multimap.keysView().size(),
multimap instanceof MultiReaderFastListMultimap
? ((MultiReaderFastListMultimap<?, ?>) multimap).initialListCapacity
: DEFAULT_CAPACITY);
this.putAll(multimap);
}
public MultiReaderFastListMultimap(Pair<K, V>... pairs)
{
super(pairs);
}
public MultiReaderFastListMultimap(Iterable<Pair<K, V>> inputIterable)
{
super(inputIterable);
}
public static <K, V> MultiReaderFastListMultimap<K, V> newMultimap()
{
return new MultiReaderFastListMultimap<K, V>();
}
public static <K, V> MultiReaderFastListMultimap<K, V> newMultimap(Multimap<? extends K, ? extends V> multimap)
{
return new MultiReaderFastListMultimap<K, V>(multimap);
}
public static <K, V> MultiReaderFastListMultimap<K, V> newMultimap(Pair<K, V>... pairs)
{
return new MultiReaderFastListMultimap<K, V>(pairs);
}
public static <K, V> MultiReaderFastListMultimap<K, V> newMultimap(Iterable<Pair<K, V>> inputIterable)
{
return new MultiReaderFastListMultimap<K, V>(inputIterable);
}
@Override
protected MutableMap<K, MutableList<V>> createMap()
{
return ConcurrentHashMap.newMap();
}
@Override
protected MutableMap<K, MutableList<V>> createMapWithKeyCount(int keyCount)
{
return ConcurrentHashMap.newMap(keyCount);
}
@Override
protected MutableList<V> createCollection()
{
return MultiReaderFastList.newList(this.initialListCapacity);
}
public MultiReaderFastListMultimap<K, V> newEmpty()
{
return new MultiReaderFastListMultimap<K, V>();
}
public MutableBagMultimap<V, K> flip()
{
return Iterate.flip(this);
}
public FastListMultimap<K, V> selectKeysValues(Predicate2<? super K, ? super V> predicate)
{
return this.selectKeysValues(predicate, FastListMultimap.<K, V>newMultimap());
}
public FastListMultimap<K, V> rejectKeysValues(Predicate2<? super K, ? super V> predicate)
{
return this.rejectKeysValues(predicate, FastListMultimap.<K, V>newMultimap());
}
public FastListMultimap<K, V> selectKeysMultiValues(Predicate2<? super K, ? super Iterable<V>> predicate)
{
return this.selectKeysMultiValues(predicate, FastListMultimap.<K, V>newMultimap());
}
public FastListMultimap<K, V> rejectKeysMultiValues(Predicate2<? super K, ? super Iterable<V>> predicate)
{
return this.rejectKeysMultiValues(predicate, FastListMultimap.<K, V>newMultimap());
}
}