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/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* License: GNU Lesser General Public License (LGPL), version 2.1 or later.
* See the lgpl.txt file in the root directory or .
*/
package org.hibernate.query.spi;
import java.util.IntSummaryStatistics;
import java.util.OptionalDouble;
import java.util.OptionalInt;
import java.util.PrimitiveIterator;
import java.util.Spliterator;
import java.util.function.BiConsumer;
import java.util.function.IntBinaryOperator;
import java.util.function.IntConsumer;
import java.util.function.IntFunction;
import java.util.function.IntPredicate;
import java.util.function.IntToDoubleFunction;
import java.util.function.IntToLongFunction;
import java.util.function.IntUnaryOperator;
import java.util.function.ObjIntConsumer;
import java.util.function.Supplier;
import java.util.stream.DoubleStream;
import java.util.stream.IntStream;
import java.util.stream.LongStream;
import java.util.stream.Stream;
import org.hibernate.Incubating;
/**
* The {@link IntStreamDecorator} wraps a Java {@link IntStream} and registers a {@code closeHandler}
* which is passed further to any resulting {@link Stream}.
*
* The goal of the {@link IntStreamDecorator} is to close the underlying {@link IntStream} upon
* calling a terminal operation.
*
* @author Vlad Mihalcea
* @since 5.4
*/
@Incubating
public class IntStreamDecorator implements IntStream {
private final IntStream delegate;
private final Runnable closeHandler;
public IntStreamDecorator(
IntStream delegate,
Runnable closeHandler) {
this.closeHandler = closeHandler;
this.delegate = delegate.onClose( closeHandler );
}
@Override
public IntStream filter(IntPredicate predicate) {
return new IntStreamDecorator(
delegate.filter( predicate ),
closeHandler
);
}
@Override
public IntStream map(IntUnaryOperator mapper) {
return new IntStreamDecorator(
delegate.map( mapper ),
closeHandler
);
}
@Override
public Stream mapToObj(IntFunction mapper) {
return new StreamDecorator<>(
delegate.mapToObj( mapper ),
closeHandler
);
}
@Override
public LongStream mapToLong(IntToLongFunction mapper) {
return new LongStreamDecorator(
delegate.mapToLong( mapper ),
closeHandler
);
}
@Override
public DoubleStream mapToDouble(IntToDoubleFunction mapper) {
return new DoubleStreamDecorator(
delegate.mapToDouble( mapper ),
closeHandler
);
}
@Override
public IntStream flatMap(IntFunction mapper) {
return new IntStreamDecorator(
delegate.flatMap( mapper ),
closeHandler
);
}
@Override
public IntStream distinct() {
return new IntStreamDecorator(
delegate.distinct(),
closeHandler
);
}
@Override
public IntStream sorted() {
return new IntStreamDecorator(
delegate.sorted(),
closeHandler
);
}
@Override
public IntStream peek(IntConsumer action) {
return new IntStreamDecorator(
delegate.peek( action ),
closeHandler
);
}
@Override
public IntStream limit(long maxSize) {
return new IntStreamDecorator(
delegate.limit( maxSize ),
closeHandler
);
}
@Override
public IntStream skip(long n) {
return new IntStreamDecorator(
delegate.skip( n ),
closeHandler
);
}
@Override
public void forEach(IntConsumer action) {
delegate.forEach( action );
close();
}
@Override
public void forEachOrdered(IntConsumer action) {
delegate.forEachOrdered( action );
close();
}
@Override
public int[] toArray() {
int[] result = delegate.toArray();
close();
return result;
}
@Override
public int reduce(int identity, IntBinaryOperator op) {
int result = delegate.reduce( identity, op );
close();
return result;
}
@Override
public OptionalInt reduce(IntBinaryOperator op) {
OptionalInt result = delegate.reduce( op );
close();
return result;
}
@Override
public R collect(
Supplier supplier, ObjIntConsumer accumulator, BiConsumer combiner) {
R result = delegate.collect( supplier, accumulator, combiner );
close();
return result;
}
@Override
public int sum() {
int result = delegate.sum();
close();
return result;
}
@Override
public OptionalInt min() {
OptionalInt result = delegate.min();
close();
return result;
}
@Override
public OptionalInt max() {
OptionalInt result = delegate.max();
close();
return result;
}
@Override
public long count() {
long result = delegate.count();
close();
return result;
}
@Override
public OptionalDouble average() {
OptionalDouble result = delegate.average();
close();
return result;
}
@Override
public IntSummaryStatistics summaryStatistics() {
IntSummaryStatistics result = delegate.summaryStatistics();
close();
return result;
}
@Override
public boolean anyMatch(IntPredicate predicate) {
boolean result = delegate.anyMatch( predicate );
close();
return result;
}
@Override
public boolean allMatch(IntPredicate predicate) {
boolean result = delegate.allMatch( predicate );
close();
return result;
}
@Override
public boolean noneMatch(IntPredicate predicate) {
boolean result = delegate.noneMatch( predicate );
close();
return result;
}
@Override
public OptionalInt findFirst() {
OptionalInt result = delegate.findFirst();
close();
return result;
}
@Override
public OptionalInt findAny() {
OptionalInt result = delegate.findAny();
close();
return result;
}
@Override
public LongStream asLongStream() {
LongStream result = delegate.asLongStream();
close();
return result;
}
@Override
public DoubleStream asDoubleStream() {
DoubleStream result = delegate.asDoubleStream();
close();
return result;
}
@Override
public Stream boxed() {
return new StreamDecorator<>(
delegate.boxed(),
closeHandler
);
}
@Override
public IntStream sequential() {
return new IntStreamDecorator(
delegate.sequential(),
closeHandler
);
}
@Override
public IntStream parallel() {
return new IntStreamDecorator(
delegate.parallel(),
closeHandler
);
}
@Override
public IntStream unordered() {
return new IntStreamDecorator(
delegate.unordered(),
closeHandler
);
}
@Override
public IntStream onClose(Runnable closeHandler) {
this.delegate.onClose( closeHandler );
return this;
}
@Override
public void close() {
delegate.close();
}
@Override
public PrimitiveIterator.OfInt iterator() {
return delegate.iterator();
}
@Override
public Spliterator.OfInt spliterator() {
return delegate.spliterator();
}
@Override
public boolean isParallel() {
return delegate.isParallel();
}
}