org.eclipse.collections.impl.bag.immutable.AbstractImmutableBag Maven / Gradle / Ivy
/*
* Copyright (c) 2015 Goldman Sachs.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* and Eclipse Distribution License v. 1.0 which accompany this distribution.
* The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
* and the Eclipse Distribution License is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*/
package org.eclipse.collections.impl.bag.immutable;
import java.util.Iterator;
import org.eclipse.collections.api.RichIterable;
import org.eclipse.collections.api.bag.ImmutableBag;
import org.eclipse.collections.api.bag.MutableBag;
import org.eclipse.collections.api.bag.primitive.ImmutableBooleanBag;
import org.eclipse.collections.api.bag.primitive.ImmutableByteBag;
import org.eclipse.collections.api.bag.primitive.ImmutableCharBag;
import org.eclipse.collections.api.bag.primitive.ImmutableDoubleBag;
import org.eclipse.collections.api.bag.primitive.ImmutableFloatBag;
import org.eclipse.collections.api.bag.primitive.ImmutableIntBag;
import org.eclipse.collections.api.bag.primitive.ImmutableLongBag;
import org.eclipse.collections.api.bag.primitive.ImmutableShortBag;
import org.eclipse.collections.api.block.function.Function;
import org.eclipse.collections.api.block.function.Function2;
import org.eclipse.collections.api.block.function.primitive.BooleanFunction;
import org.eclipse.collections.api.block.function.primitive.ByteFunction;
import org.eclipse.collections.api.block.function.primitive.CharFunction;
import org.eclipse.collections.api.block.function.primitive.DoubleFunction;
import org.eclipse.collections.api.block.function.primitive.FloatFunction;
import org.eclipse.collections.api.block.function.primitive.IntFunction;
import org.eclipse.collections.api.block.function.primitive.LongFunction;
import org.eclipse.collections.api.block.function.primitive.ShortFunction;
import org.eclipse.collections.api.block.predicate.Predicate;
import org.eclipse.collections.api.block.predicate.Predicate2;
import org.eclipse.collections.api.block.procedure.Procedure;
import org.eclipse.collections.api.block.procedure.primitive.ObjectIntProcedure;
import org.eclipse.collections.api.collection.MutableCollection;
import org.eclipse.collections.api.list.ImmutableList;
import org.eclipse.collections.api.list.MutableList;
import org.eclipse.collections.api.map.ImmutableMap;
import org.eclipse.collections.api.partition.bag.PartitionImmutableBag;
import org.eclipse.collections.api.partition.bag.PartitionMutableBag;
import org.eclipse.collections.api.tuple.primitive.ObjectIntPair;
import org.eclipse.collections.impl.bag.mutable.primitive.BooleanHashBag;
import org.eclipse.collections.impl.bag.mutable.primitive.ByteHashBag;
import org.eclipse.collections.impl.bag.mutable.primitive.CharHashBag;
import org.eclipse.collections.impl.bag.mutable.primitive.DoubleHashBag;
import org.eclipse.collections.impl.bag.mutable.primitive.FloatHashBag;
import org.eclipse.collections.impl.bag.mutable.primitive.IntHashBag;
import org.eclipse.collections.impl.bag.mutable.primitive.LongHashBag;
import org.eclipse.collections.impl.bag.mutable.primitive.ShortHashBag;
import org.eclipse.collections.impl.block.factory.Functions;
import org.eclipse.collections.impl.block.factory.Predicates;
import org.eclipse.collections.impl.factory.Bags;
import org.eclipse.collections.impl.factory.Lists;
import org.eclipse.collections.impl.map.mutable.UnifiedMap;
import org.eclipse.collections.impl.partition.bag.PartitionHashBag;
/**
* @since 1.0
*/
public abstract class AbstractImmutableBag
extends AbstractImmutableBagIterable
implements ImmutableBag
{
public ImmutableBag newWithoutAll(Iterable elements)
{
return this.reject(Predicates.in(elements));
}
public ImmutableBag toImmutable()
{
return this;
}
public ImmutableBag tap(Procedure procedure)
{
this.forEach(procedure);
return this;
}
public ImmutableBag selectWith(Predicate2 predicate, P parameter)
{
return this.select(Predicates.bind(predicate, parameter));
}
public ImmutableBag rejectWith(Predicate2 predicate, P parameter)
{
return this.reject(Predicates.bind(predicate, parameter));
}
public PartitionImmutableBag partition(final Predicate predicate)
{
final PartitionMutableBag partitionMutableBag = new PartitionHashBag();
this.forEachWithOccurrences(new ObjectIntProcedure()
{
public void value(T each, int occurrences)
{
MutableBag bucket = predicate.accept(each)
? partitionMutableBag.getSelected()
: partitionMutableBag.getRejected();
bucket.addOccurrences(each, occurrences);
}
});
return partitionMutableBag.toImmutable();
}
public PartitionImmutableBag partitionWith(final Predicate2 predicate, final P parameter)
{
final PartitionMutableBag partitionMutableBag = new PartitionHashBag();
this.forEachWithOccurrences(new ObjectIntProcedure()
{
public void value(T each, int occurrences)
{
MutableBag bucket = predicate.accept(each, parameter)
? partitionMutableBag.getSelected()
: partitionMutableBag.getRejected();
bucket.addOccurrences(each, occurrences);
}
});
return partitionMutableBag.toImmutable();
}
public ImmutableBag collectWith(Function2 function, P parameter)
{
return this.collect(Functions.bind(function, parameter));
}
public ImmutableBooleanBag collectBoolean(BooleanFunction booleanFunction)
{
return this.collectBoolean(booleanFunction, new BooleanHashBag()).toImmutable();
}
public ImmutableByteBag collectByte(ByteFunction byteFunction)
{
return this.collectByte(byteFunction, new ByteHashBag()).toImmutable();
}
public ImmutableCharBag collectChar(CharFunction charFunction)
{
return this.collectChar(charFunction, new CharHashBag()).toImmutable();
}
public ImmutableDoubleBag collectDouble(DoubleFunction doubleFunction)
{
return this.collectDouble(doubleFunction, new DoubleHashBag()).toImmutable();
}
public ImmutableFloatBag collectFloat(FloatFunction floatFunction)
{
return this.collectFloat(floatFunction, new FloatHashBag()).toImmutable();
}
public ImmutableIntBag collectInt(IntFunction intFunction)
{
return this.collectInt(intFunction, new IntHashBag()).toImmutable();
}
public ImmutableLongBag collectLong(LongFunction longFunction)
{
return this.collectLong(longFunction, new LongHashBag()).toImmutable();
}
public ImmutableShortBag collectShort(ShortFunction shortFunction)
{
return this.collectShort(shortFunction, new ShortHashBag()).toImmutable();
}
public ImmutableList> topOccurrences(int n)
{
return this.occurrencesSortingBy(n,
new IntFunction>()
{
public int intValueOf(ObjectIntPair item)
{
return -item.getTwo();
}
},
Lists.fixedSize.>empty()
).toImmutable();
}
public ImmutableList> bottomOccurrences(int n)
{
return this.occurrencesSortingBy(n,
new IntFunction>()
{
public int intValueOf(ObjectIntPair item)
{
return item.getTwo();
}
},
Lists.fixedSize.>empty()
).toImmutable();
}
public ImmutableMap groupByUniqueKey(Function function)
{
return this.groupByUniqueKey(function, UnifiedMap.newMap()).toImmutable();
}
public RichIterable> chunk(int size)
{
if (size <= 0)
{
throw new IllegalArgumentException("Size for groups must be positive but was: " + size);
}
Iterator iterator = this.iterator();
MutableList> result = Lists.mutable.empty();
while (iterator.hasNext())
{
MutableCollection batch = Bags.mutable.empty();
for (int i = 0; i < size && iterator.hasNext(); i++)
{
batch.add(iterator.next());
}
result.add(batch.toImmutable());
}
return result.toImmutable();
}
}