/*
* Copyright 2015 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.bag.immutable;
import java.util.Collection;
import java.util.List;
import java.util.Set;
import com.gs.collections.api.bag.ImmutableBagIterable;
import com.gs.collections.api.block.function.Function;
import com.gs.collections.api.block.function.Function0;
import com.gs.collections.api.block.function.Function2;
import com.gs.collections.api.block.procedure.Procedure2;
import com.gs.collections.api.collection.MutableCollection;
import com.gs.collections.api.map.ImmutableMap;
import com.gs.collections.api.map.MutableMap;
import com.gs.collections.impl.bag.AbstractBag;
import com.gs.collections.impl.block.procedure.MutatingAggregationProcedure;
import com.gs.collections.impl.block.procedure.NonMutatingAggregationProcedure;
import com.gs.collections.impl.map.mutable.UnifiedMap;
import com.gs.collections.impl.set.mutable.UnifiedSet;
import net.jcip.annotations.Immutable;
@Immutable
public abstract class AbstractImmutableBagIterable<T>
extends AbstractBag<T>
implements ImmutableBagIterable<T>
{
public <K, V> ImmutableMap<K, V> aggregateInPlaceBy(
Function<? super T, ? extends K> groupBy,
Function0<? extends V> zeroValueFactory,
Procedure2<? super V, ? super T> mutatingAggregator)
{
MutableMap<K, V> map = UnifiedMap.newMap();
this.forEach(new MutatingAggregationProcedure<T, K, V>(map, groupBy, zeroValueFactory, mutatingAggregator));
return map.toImmutable();
}
public <K, V> ImmutableMap<K, V> aggregateBy(
Function<? super T, ? extends K> groupBy,
Function0<? extends V> zeroValueFactory,
Function2<? super V, ? super T, ? extends V> nonMutatingAggregator)
{
MutableMap<K, V> map = UnifiedMap.newMap();
this.forEach(new NonMutatingAggregationProcedure<T, K, V>(map, groupBy, zeroValueFactory, nonMutatingAggregator));
return map.toImmutable();
}
protected void removeAllFrom(Iterable<? extends T> elements, MutableCollection<T> result)
{
if (elements instanceof Set)
{
result.removeAll((Set<?>) elements);
}
else if (elements instanceof List)
{
List<T> toBeRemoved = (List<T>) elements;
if (this.size() * toBeRemoved.size() > 10000)
{
result.removeAll(UnifiedSet.newSet(elements));
}
else
{
result.removeAll(toBeRemoved);
}
}
else
{
result.removeAll(UnifiedSet.newSet(elements));
}
}
public boolean add(T t)
{
throw new UnsupportedOperationException("Cannot call add() on " + this.getClass().getSimpleName());
}
public boolean remove(Object o)
{
throw new UnsupportedOperationException("Cannot call remove() on " + this.getClass().getSimpleName());
}
public boolean addAll(Collection<? extends T> collection)
{
throw new UnsupportedOperationException("Cannot call addAll() on " + this.getClass().getSimpleName());
}
public boolean removeAll(Collection<?> collection)
{
throw new UnsupportedOperationException("Cannot call removeAll() on " + this.getClass().getSimpleName());
}
public boolean retainAll(Collection<?> collection)
{
throw new UnsupportedOperationException("Cannot call retainAll() on " + this.getClass().getSimpleName());
}
public void clear()
{
throw new UnsupportedOperationException("Cannot call clear() on " + this.getClass().getSimpleName());
}
}