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HHH-17061 Remove unused custom collection: JoinedIterator

This commit is contained in:
Sanne Grinovero 2023-08-09 15:52:49 +02:00 committed by Sanne Grinovero
parent 5754cd608c
commit 6970ddbbbf
4 changed files with 0 additions and 81 deletions
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78
hibernate-core/src/main/java/org/hibernate/internal/util/collections/JoinedIterator.java
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@ -1,78 +0,0 @@
/*
* 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 <http://www.gnu.org/licenses/lgpl-2.1.html>.
*/
package org.hibernate.internal.util.collections;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
/**
* An Iterator implementation that wraps other Iterators, and presents them all as one
* continuous Iterator. When any method from Iterator is called, we delegate to each
* wrapped Iterator in turn until all wrapped Iterators are exhausted.
*
* @author Gavine King
* @author Steve Ebersole
*/
public class JoinedIterator<T> implements Iterator<T> {
private final Iterator<? extends T>[] wrappedIterators;
private int currentIteratorIndex;
private Iterator<? extends T> currentIterator;
private Iterator<? extends T> lastUsedIterator;
@SuppressWarnings("unchecked")
public JoinedIterator(List<Iterator<T>> wrappedIterators) {
this( wrappedIterators.toArray(new Iterator[0]) );
}
@SafeVarargs
public JoinedIterator(Iterator<? extends T>... iteratorsToWrap) {
if( iteratorsToWrap == null ) {
throw new NullPointerException( "Iterators to join were null" );
}
this.wrappedIterators = iteratorsToWrap;
}
public boolean hasNext() {
updateCurrentIterator();
return currentIterator.hasNext();
}
public T next() {
updateCurrentIterator();
return currentIterator.next();
}
public void remove() {
updateCurrentIterator();
lastUsedIterator.remove();
}
// call this before any Iterator method to make sure that the current Iterator
// is not exhausted
protected void updateCurrentIterator() {
if ( currentIterator == null ) {
if( wrappedIterators.length == 0 ) {
currentIterator = Collections.emptyIterator();
}
else {
currentIterator = wrappedIterators[0];
}
// set last used iterator here, in case the user calls remove
// before calling hasNext() or next() (although they shouldn't)
lastUsedIterator = currentIterator;
}
while (! currentIterator.hasNext() && currentIteratorIndex < wrappedIterators.length - 1) {
currentIteratorIndex++;
currentIterator = wrappedIterators[currentIteratorIndex];
}
}
}

1
hibernate-core/src/main/java/org/hibernate/mapping/Component.java
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@ -38,7 +38,6 @@ import org.hibernate.id.factory.IdentifierGeneratorFactory;
import org.hibernate.internal.util.ReflectHelper;
import org.hibernate.internal.util.collections.ArrayHelper;
import org.hibernate.internal.util.collections.CollectionHelper;
import org.hibernate.internal.util.collections.JoinedIterator;
import org.hibernate.metamodel.spi.EmbeddableInstantiator;
import org.hibernate.property.access.spi.Setter;
import org.hibernate.generator.Generator;

1
hibernate-core/src/main/java/org/hibernate/mapping/SingleTableSubclass.java
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@ -12,7 +12,6 @@ import java.util.List;
import org.hibernate.MappingException;
import org.hibernate.boot.Metadata;
import org.hibernate.boot.spi.MetadataBuildingContext;
import org.hibernate.internal.util.collections.JoinedIterator;
import org.hibernate.internal.util.collections.JoinedList;
/**

1
hibernate-core/src/main/java/org/hibernate/mapping/Subclass.java
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@ -14,7 +14,6 @@ import java.util.List;
import org.hibernate.boot.spi.MetadataBuildingContext;
import org.hibernate.engine.OptimisticLockStyle;
import org.hibernate.internal.FilterConfiguration;
import org.hibernate.internal.util.collections.JoinedIterator;
import org.hibernate.internal.util.collections.JoinedList;
import org.hibernate.persister.entity.EntityPersister;