org.eclipse.collections.impl.bag.AbstractBag Maven / Gradle / Ivy
/*
* Copyright (c) 2018 Goldman Sachs and others.
* 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;
import java.util.Collection;
import java.util.Collections;
import java.util.Comparator;
import java.util.StringJoiner;
import org.eclipse.collections.api.BooleanIterable;
import org.eclipse.collections.api.ByteIterable;
import org.eclipse.collections.api.CharIterable;
import org.eclipse.collections.api.DoubleIterable;
import org.eclipse.collections.api.FloatIterable;
import org.eclipse.collections.api.IntIterable;
import org.eclipse.collections.api.LongIterable;
import org.eclipse.collections.api.ShortIterable;
import org.eclipse.collections.api.bag.Bag;
import org.eclipse.collections.api.bag.MutableBag;
import org.eclipse.collections.api.bag.MutableBagIterable;
import org.eclipse.collections.api.bag.primitive.MutableBooleanBag;
import org.eclipse.collections.api.bag.primitive.MutableByteBag;
import org.eclipse.collections.api.bag.primitive.MutableCharBag;
import org.eclipse.collections.api.bag.primitive.MutableDoubleBag;
import org.eclipse.collections.api.bag.primitive.MutableFloatBag;
import org.eclipse.collections.api.bag.primitive.MutableIntBag;
import org.eclipse.collections.api.bag.primitive.MutableLongBag;
import org.eclipse.collections.api.bag.primitive.MutableShortBag;
import org.eclipse.collections.api.bag.sorted.MutableSortedBag;
import org.eclipse.collections.api.block.function.Function;
import org.eclipse.collections.api.block.function.Function2;
import org.eclipse.collections.api.block.function.Function3;
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.DoubleObjectToDoubleFunction;
import org.eclipse.collections.api.block.function.primitive.FloatFunction;
import org.eclipse.collections.api.block.function.primitive.FloatObjectToFloatFunction;
import org.eclipse.collections.api.block.function.primitive.IntFunction;
import org.eclipse.collections.api.block.function.primitive.IntObjectToIntFunction;
import org.eclipse.collections.api.block.function.primitive.LongFunction;
import org.eclipse.collections.api.block.function.primitive.LongObjectToLongFunction;
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.collection.primitive.MutableBooleanCollection;
import org.eclipse.collections.api.collection.primitive.MutableByteCollection;
import org.eclipse.collections.api.collection.primitive.MutableCharCollection;
import org.eclipse.collections.api.collection.primitive.MutableDoubleCollection;
import org.eclipse.collections.api.collection.primitive.MutableFloatCollection;
import org.eclipse.collections.api.collection.primitive.MutableIntCollection;
import org.eclipse.collections.api.collection.primitive.MutableLongCollection;
import org.eclipse.collections.api.collection.primitive.MutableShortCollection;
import org.eclipse.collections.api.factory.SortedSets;
import org.eclipse.collections.api.list.MutableList;
import org.eclipse.collections.api.multimap.MutableMultimap;
import org.eclipse.collections.api.set.MutableSet;
import org.eclipse.collections.api.set.sorted.MutableSortedSet;
import org.eclipse.collections.api.tuple.primitive.ObjectIntPair;
import org.eclipse.collections.impl.AbstractRichIterable;
import org.eclipse.collections.impl.Counter;
import org.eclipse.collections.impl.bag.mutable.HashBag;
import org.eclipse.collections.impl.bag.sorted.mutable.TreeBag;
import org.eclipse.collections.impl.list.mutable.FastList;
import org.eclipse.collections.impl.set.mutable.UnifiedSet;
import org.eclipse.collections.impl.tuple.primitive.PrimitiveTuples;
import org.eclipse.collections.impl.utility.Iterate;
/**
* @since 7.0
*/
public abstract class AbstractBag
extends AbstractRichIterable
implements Collection, Bag
{
@Override
public > R select(Predicate predicate, R target)
{
if (target instanceof MutableBagIterable)
{
MutableBagIterable targetBag = (MutableBagIterable) target;
this.forEachWithOccurrences((each, occurrences) -> {
if (predicate.accept(each))
{
targetBag.addOccurrences(each, occurrences);
}
});
}
else
{
this.forEachWithOccurrences((each, occurrences) -> {
if (predicate.accept(each))
{
for (int i = 0; i < occurrences; i++)
{
target.add(each);
}
}
});
}
return target;
}
@Override
public > R selectWith(
Predicate2 predicate,
P parameter,
R target)
{
if (target instanceof MutableBagIterable)
{
MutableBagIterable targetBag = (MutableBagIterable) target;
this.forEachWithOccurrences((each, occurrences) -> {
if (predicate.accept(each, parameter))
{
targetBag.addOccurrences(each, occurrences);
}
});
}
else
{
this.forEachWithOccurrences((each, occurrences) -> {
if (predicate.accept(each, parameter))
{
for (int i = 0; i < occurrences; i++)
{
target.add(each);
}
}
});
}
return target;
}
@Override
public > R reject(Predicate predicate, R target)
{
if (target instanceof MutableBagIterable)
{
MutableBagIterable targetBag = (MutableBagIterable) target;
this.forEachWithOccurrences((each, occurrences) -> {
if (!predicate.accept(each))
{
targetBag.addOccurrences(each, occurrences);
}
});
}
else
{
this.forEachWithOccurrences((each, occurrences) -> {
if (!predicate.accept(each))
{
for (int i = 0; i < occurrences; i++)
{
target.add(each);
}
}
});
}
return target;
}
@Override
public > R rejectWith(
Predicate2 predicate,
P parameter,
R target)
{
if (target instanceof MutableBagIterable)
{
MutableBagIterable targetBag = (MutableBagIterable) target;
this.forEachWithOccurrences((each, occurrences) -> {
if (!predicate.accept(each, parameter))
{
targetBag.addOccurrences(each, occurrences);
}
});
}
else
{
this.forEachWithOccurrences((each, occurrences) -> {
if (!predicate.accept(each, parameter))
{
for (int i = 0; i < occurrences; i++)
{
target.add(each);
}
}
});
}
return target;
}
@Override
public int count(Predicate predicate)
{
Counter result = new Counter();
this.forEachWithOccurrences((each, occurrences) -> {
if (predicate.accept(each))
{
result.add(occurrences);
}
});
return result.getCount();
}
@Override
public > R collect(Function function, R target)
{
if (target instanceof MutableBagIterable)
{
MutableBagIterable targetBag = (MutableBagIterable) target;
this.forEachWithOccurrences((each, occurrences) -> targetBag.addOccurrences(function.valueOf(each), occurrences));
}
else
{
this.forEachWithOccurrences((each, occurrences) -> {
V value = function.valueOf(each);
for (int i = 0; i < occurrences; i++)
{
target.add(value);
}
});
}
return target;
}
@Override
public > R collectWith(
Function2 function,
P parameter,
R target)
{
if (target instanceof MutableBagIterable)
{
MutableBagIterable targetBag = (MutableBagIterable) target;
this.forEachWithOccurrences((each, occurrences) -> targetBag.addOccurrences(function.value(each, parameter), occurrences));
}
else
{
this.forEachWithOccurrences((each, occurrences) -> {
V value = function.value(each, parameter);
for (int i = 0; i < occurrences; i++)
{
target.add(value);
}
});
}
return target;
}
@Override
public > R collectIf(
Predicate predicate,
Function function,
R target)
{
if (target instanceof MutableBagIterable)
{
MutableBagIterable targetBag = (MutableBagIterable) target;
this.forEachWithOccurrences((each, occurrences) -> {
if (predicate.accept(each))
{
targetBag.addOccurrences(function.valueOf(each), occurrences);
}
});
}
else
{
this.forEachWithOccurrences((each, occurrences) -> {
if (predicate.accept(each))
{
V value = function.valueOf(each);
for (int i = 0; i < occurrences; i++)
{
target.add(value);
}
}
});
}
return target;
}
@Override
public > R flatCollect(Function> function, R target)
{
if (target instanceof MutableBagIterable)
{
MutableBagIterable targetBag = (MutableBagIterable) target;
this.forEachWithOccurrences((each, occurrences) -> {
Iterable values = function.valueOf(each);
Iterate.forEach(values, eachValue -> targetBag.addOccurrences(eachValue, occurrences));
});
}
else
{
this.forEachWithOccurrences((each, occurrences) -> {
Iterable values = function.valueOf(each);
for (int i = 0; i < occurrences; i++)
{
Iterate.forEach(values, target::add);
}
});
}
return target;
}
@Override
public R collectBoolean(BooleanFunction booleanFunction, R target)
{
if (target instanceof MutableBooleanBag)
{
MutableBooleanBag targetBag = (MutableBooleanBag) target;
this.forEachWithOccurrences((each, occurrences) -> targetBag.addOccurrences(booleanFunction.booleanValueOf(each), occurrences));
}
else
{
this.forEachWithOccurrences((each, occurrences) -> {
boolean value = booleanFunction.booleanValueOf(each);
for (int i = 0; i < occurrences; i++)
{
target.add(value);
}
});
}
return target;
}
@Override
public R flatCollectBoolean(
Function function, R target)
{
if (target instanceof MutableBooleanBag)
{
MutableBooleanBag targetBag = (MutableBooleanBag) target;
this.forEachWithOccurrences((each, occurrences) -> {
BooleanIterable values = function.valueOf(each);
values.forEach(value -> targetBag.addOccurrences(value, occurrences));
});
}
else
{
this.forEachWithOccurrences((each, occurrences) -> {
BooleanIterable value = function.valueOf(each);
for (int i = 0; i < occurrences; i++)
{
value.forEach(target::add);
}
});
}
return target;
}
@Override
public R collectByte(ByteFunction byteFunction, R target)
{
if (target instanceof MutableByteBag)
{
MutableByteBag targetBag = (MutableByteBag) target;
this.forEachWithOccurrences((each, occurrences) -> targetBag.addOccurrences(byteFunction.byteValueOf(each), occurrences));
}
else
{
this.forEachWithOccurrences((each, occurrences) -> {
byte value = byteFunction.byteValueOf(each);
for (int i = 0; i < occurrences; i++)
{
target.add(value);
}
});
}
return target;
}
@Override
public R flatCollectByte(
Function function, R target)
{
if (target instanceof MutableByteBag)
{
MutableByteBag targetBag = (MutableByteBag) target;
this.forEachWithOccurrences((each, occurrences) -> {
ByteIterable values = function.valueOf(each);
values.forEach(value -> targetBag.addOccurrences(value, occurrences));
});
}
else
{
this.forEachWithOccurrences((each, occurrences) -> {
ByteIterable value = function.valueOf(each);
for (int i = 0; i < occurrences; i++)
{
value.forEach(target::add);
}
});
}
return target;
}
@Override
public R collectChar(CharFunction charFunction, R target)
{
if (target instanceof MutableCharBag)
{
MutableCharBag targetBag = (MutableCharBag) target;
this.forEachWithOccurrences((each, occurrences) -> targetBag.addOccurrences(charFunction.charValueOf(each), occurrences));
}
else
{
this.forEachWithOccurrences((each, occurrences) -> {
char value = charFunction.charValueOf(each);
for (int i = 0; i < occurrences; i++)
{
target.add(value);
}
});
}
return target;
}
@Override
public R flatCollectChar(
Function function, R target)
{
if (target instanceof MutableCharBag)
{
MutableCharBag targetBag = (MutableCharBag) target;
this.forEachWithOccurrences((each, occurrences) -> {
CharIterable values = function.valueOf(each);
values.forEach(value -> targetBag.addOccurrences(value, occurrences));
});
}
else
{
this.forEachWithOccurrences((each, occurrences) -> {
CharIterable value = function.valueOf(each);
for (int i = 0; i < occurrences; i++)
{
value.forEach(target::add);
}
});
}
return target;
}
@Override
public R collectDouble(DoubleFunction doubleFunction, R target)
{
if (target instanceof MutableDoubleBag)
{
MutableDoubleBag targetBag = (MutableDoubleBag) target;
this.forEachWithOccurrences((each, occurrences) -> targetBag.addOccurrences(doubleFunction.doubleValueOf(each), occurrences));
}
else
{
this.forEachWithOccurrences((each, occurrences) -> {
double value = doubleFunction.doubleValueOf(each);
for (int i = 0; i < occurrences; i++)
{
target.add(value);
}
});
}
return target;
}
@Override
public R flatCollectDouble(
Function function,
R target)
{
if (target instanceof MutableDoubleBag)
{
MutableDoubleBag targetBag = (MutableDoubleBag) target;
this.forEachWithOccurrences((each, occurrences) -> {
DoubleIterable values = function.valueOf(each);
values.forEach(value -> targetBag.addOccurrences(value, occurrences));
});
}
else
{
this.forEachWithOccurrences((each, occurrences) -> {
DoubleIterable value = function.valueOf(each);
for (int i = 0; i < occurrences; i++)
{
value.forEach(target::add);
}
});
}
return target;
}
@Override
public R collectFloat(FloatFunction floatFunction, R target)
{
if (target instanceof MutableFloatBag)
{
MutableFloatBag targetBag = (MutableFloatBag) target;
this.forEachWithOccurrences((each, occurrences) -> targetBag.addOccurrences(floatFunction.floatValueOf(each), occurrences));
}
else
{
this.forEachWithOccurrences((each, occurrences) -> {
float value = floatFunction.floatValueOf(each);
for (int i = 0; i < occurrences; i++)
{
target.add(value);
}
});
}
return target;
}
@Override
public R flatCollectFloat(
Function function, R target)
{
if (target instanceof MutableFloatBag)
{
MutableFloatBag targetBag = (MutableFloatBag) target;
this.forEachWithOccurrences((each, occurrences) -> {
FloatIterable values = function.valueOf(each);
values.forEach(value -> targetBag.addOccurrences(value, occurrences));
});
}
else
{
this.forEachWithOccurrences((each, occurrences) -> {
FloatIterable value = function.valueOf(each);
for (int i = 0; i < occurrences; i++)
{
value.forEach(target::add);
}
});
}
return target;
}
@Override
public R collectInt(IntFunction intFunction, R target)
{
if (target instanceof MutableIntBag)
{
MutableIntBag targetBag = (MutableIntBag) target;
this.forEachWithOccurrences((each, occurrences) -> targetBag.addOccurrences(intFunction.intValueOf(each), occurrences));
}
else
{
this.forEachWithOccurrences((each, occurrences) -> {
int value = intFunction.intValueOf(each);
for (int i = 0; i < occurrences; i++)
{
target.add(value);
}
});
}
return target;
}
@Override
public R flatCollectInt(
Function function, R target)
{
if (target instanceof MutableIntBag)
{
MutableIntBag targetBag = (MutableIntBag) target;
this.forEachWithOccurrences((each, occurrences) -> {
IntIterable values = function.valueOf(each);
values.forEach(value -> targetBag.addOccurrences(value, occurrences));
});
}
else
{
this.forEachWithOccurrences((each, occurrences) -> {
IntIterable value = function.valueOf(each);
for (int i = 0; i < occurrences; i++)
{
value.forEach(target::add);
}
});
}
return target;
}
@Override
public R collectLong(LongFunction longFunction, R target)
{
if (target instanceof MutableLongBag)
{
MutableLongBag targetBag = (MutableLongBag) target;
this.forEachWithOccurrences((each, occurrences) -> targetBag.addOccurrences(longFunction.longValueOf(each), occurrences));
}
else
{
this.forEachWithOccurrences((each, occurrences) -> {
long value = longFunction.longValueOf(each);
for (int i = 0; i < occurrences; i++)
{
target.add(value);
}
});
}
return target;
}
@Override
public R flatCollectLong(
Function function, R target)
{
if (target instanceof MutableLongBag)
{
MutableLongBag targetBag = (MutableLongBag) target;
this.forEachWithOccurrences((each, occurrences) -> {
LongIterable values = function.valueOf(each);
values.forEach(value -> targetBag.addOccurrences(value, occurrences));
});
}
else
{
this.forEachWithOccurrences((each, occurrences) -> {
LongIterable value = function.valueOf(each);
for (int i = 0; i < occurrences; i++)
{
value.forEach(target::add);
}
});
}
return target;
}
@Override
public R collectShort(ShortFunction shortFunction, R target)
{
if (target instanceof MutableShortBag)
{
MutableShortBag targetBag = (MutableShortBag) target;
this.forEachWithOccurrences((each, occurrences) -> targetBag.addOccurrences(shortFunction.shortValueOf(each), occurrences));
}
else
{
this.forEachWithOccurrences((each, occurrences) -> {
short value = shortFunction.shortValueOf(each);
for (int i = 0; i < occurrences; i++)
{
target.add(value);
}
});
}
return target;
}
@Override
public R flatCollectShort(
Function function, R target)
{
if (target instanceof MutableShortBag)
{
MutableShortBag targetBag = (MutableShortBag) target;
this.forEachWithOccurrences((each, occurrences) -> {
ShortIterable values = function.valueOf(each);
values.forEach(value -> targetBag.addOccurrences(value, occurrences));
});
}
else
{
this.forEachWithOccurrences((each, occurrences) -> {
ShortIterable value = function.valueOf(each);
for (int i = 0; i < occurrences; i++)
{
value.forEach(target::add);
}
});
}
return target;
}
@Override
public > R groupBy(
Function function,
R target)
{
this.forEachWithOccurrences((each, occurrences) -> {
V value = function.valueOf(each);
target.putAll(value, Collections.nCopies(occurrences, each));
});
return target;
}
@Override
public > R groupByEach(
Function> function,
R target)
{
this.forEachWithOccurrences((each, occurrences) -> {
Iterable values = function.valueOf(each);
Iterate.forEach(values, value -> target.putAll(value, Collections.nCopies(occurrences, each)));
});
return target;
}
@Override
public long sumOfInt(IntFunction function)
{
long[] sum = {0L};
this.forEachWithOccurrences((each, occurrences) -> {
int intValue = function.intValueOf(each);
sum[0] += (long) intValue * (long) occurrences;
});
return sum[0];
}
@Override
public double sumOfFloat(FloatFunction function)
{
double[] sum = {0.0d};
double[] compensation = {0.0d};
this.forEachWithOccurrences((each, occurrences) -> {
float f = function.floatValueOf(each);
for (int i = 0; i < occurrences; i++)
{
double adjustedValue = f - compensation[0];
double nextSum = sum[0] + adjustedValue;
compensation[0] = nextSum - sum[0] - adjustedValue;
sum[0] = nextSum;
}
});
return sum[0];
}
@Override
public long sumOfLong(LongFunction function)
{
long[] sum = {0L};
this.forEachWithOccurrences((each, occurrences) -> {
long longValue = function.longValueOf(each);
sum[0] += longValue * (long) occurrences;
});
return sum[0];
}
@Override
public double sumOfDouble(DoubleFunction function)
{
double[] sum = {0.0d};
double[] compensation = {0.0d};
this.forEachWithOccurrences((each, occurrences) -> {
double d = function.doubleValueOf(each);
for (int i = 0; i < occurrences; i++)
{
double y = d - compensation[0];
double t = sum[0] + y;
compensation[0] = t - sum[0] - y;
sum[0] = t;
}
});
return sum[0];
}
@Override
public IV injectInto(IV injectedValue, Function2 function)
{
IV[] result = (IV[]) new Object[]{injectedValue};
this.forEachWithOccurrences((each, occurrences) -> {
for (int i = 0; i < occurrences; i++)
{
result[0] = function.value(result[0], each);
}
});
return result[0];
}
@Override
public int injectInto(int injectedValue, IntObjectToIntFunction function)
{
int[] result = {injectedValue};
this.forEachWithOccurrences((each, occurrences) -> {
for (int i = 0; i < occurrences; i++)
{
result[0] = function.intValueOf(result[0], each);
}
});
return result[0];
}
@Override
public long injectInto(long injectedValue, LongObjectToLongFunction function)
{
long[] result = {injectedValue};
this.forEachWithOccurrences((each, occurrences) -> {
for (int i = 0; i < occurrences; i++)
{
result[0] = function.longValueOf(result[0], each);
}
});
return result[0];
}
@Override
public double injectInto(double injectedValue, DoubleObjectToDoubleFunction function)
{
double[] result = {injectedValue};
this.forEachWithOccurrences((each, occurrences) -> {
for (int i = 0; i < occurrences; i++)
{
result[0] = function.doubleValueOf(result[0], each);
}
});
return result[0];
}
@Override
public float injectInto(float injectedValue, FloatObjectToFloatFunction function)
{
float[] result = {injectedValue};
this.forEachWithOccurrences((each, occurrences) -> {
for (int i = 0; i < occurrences; i++)
{
result[0] = function.floatValueOf(result[0], each);
}
});
return result[0];
}
public IV injectIntoWith(IV injectedValue, Function3 function, P parameter)
{
IV[] result = (IV[]) new Object[]{injectedValue};
this.forEachWithOccurrences((each, occurrences) -> {
for (int i = 0; i < occurrences; i++)
{
result[0] = function.value(result[0], each, parameter);
}
});
return result[0];
}
@Override
public String toStringOfItemToCount()
{
StringJoiner joiner = new StringJoiner(", ", "{", "}");
this.forEachWithOccurrences((each, occurrences) -> joiner.add(each + "=" + occurrences));
return joiner.toString();
}
protected MutableList> toListWithOccurrences()
{
MutableList> result = FastList.newList(this.sizeDistinct());
this.forEachWithOccurrences((each, count) -> result.add(PrimitiveTuples.pair(each, count)));
return result;
}
@Override
public MutableList toList()
{
MutableList result = FastList.newList(this.size());
this.forEachWithOccurrences((each, occurrences) -> {
for (int i = 0; i < occurrences; i++)
{
result.add(each);
}
});
return result;
}
@Override
public MutableList toSortedList(Comparator comparator)
{
MutableList> sorted = this.toListWithOccurrences().sortThis((o1, o2) -> comparator.compare(o1.getOne(), o2.getOne()));
MutableList result = FastList.newList(this.size());
sorted.each(each -> {
T object = each.getOne();
int occurrences = each.getTwo();
for (int i = 0; i < occurrences; i++)
{
result.add(object);
}
});
return result;
}
@Override
public MutableSet toSet()
{
MutableSet result = UnifiedSet.newSet(this.sizeDistinct());
this.forEachWithOccurrences((each, occurrences) -> result.add(each));
return result;
}
@Override
public MutableSortedSet toSortedSet()
{
MutableSortedSet result = SortedSets.mutable.empty();
this.forEachWithOccurrences((each, occurrences) -> result.add(each));
return result;
}
@Override
public MutableSortedSet toSortedSet(Comparator comparator)
{
MutableSortedSet result = SortedSets.mutable.with(comparator);
this.forEachWithOccurrences((each, occurrences) -> result.add(each));
return result;
}
@Override
public MutableBag toBag()
{
MutableBag result = HashBag.newBag(this.sizeDistinct());
this.forEachWithOccurrences(result::addOccurrences);
return result;
}
@Override
public MutableSortedBag toSortedBag()
{
MutableSortedBag result = TreeBag.newBag();
this.forEachWithOccurrences(result::addOccurrences);
return result;
}
@Override
public MutableSortedBag toSortedBag(Comparator comparator)
{
MutableSortedBag result = TreeBag.newBag(comparator);
this.forEachWithOccurrences(result::addOccurrences);
return result;
}
protected MutableList> occurrencesSortingBy(int n, IntFunction> function, MutableList> returnWhenEmpty)
{
if (n < 0)
{
throw new IllegalArgumentException("Cannot use a value of n < 0");
}
if (n == 0)
{
return returnWhenEmpty;
}
int keySize = Math.min(n, this.sizeDistinct());
MutableList> sorted = this.toListWithOccurrences().sortThisByInt(function);
MutableList> results = sorted.subList(0, keySize).toList();
while (keySize < sorted.size() && results.getLast().getTwo() == sorted.get(keySize).getTwo())
{
results.add(sorted.get(keySize));
keySize++;
}
return results;
}
}
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