From 263d085885df024dca9250cc03c807912b0a7662 Mon Sep 17 00:00:00 2001
From: Matthew Swift <matthew.swift@forgerock.com>
Date: Tue, 24 Apr 2012 22:33:21 +0000
Subject: [PATCH] Reformat to comply with new Checkstyle rules.
---
opendj3/opendj-ldap-sdk/src/main/java/com/forgerock/opendj/util/Iterators.java | 823 ++++++++++++++++++++++++----------------------------------
1 files changed, 346 insertions(+), 477 deletions(-)
diff --git a/opendj3/opendj-ldap-sdk/src/main/java/com/forgerock/opendj/util/Iterators.java b/opendj3/opendj-ldap-sdk/src/main/java/com/forgerock/opendj/util/Iterators.java
index 0080e5e..d36925f 100644
--- a/opendj3/opendj-ldap-sdk/src/main/java/com/forgerock/opendj/util/Iterators.java
+++ b/opendj3/opendj-ldap-sdk/src/main/java/com/forgerock/opendj/util/Iterators.java
@@ -6,17 +6,16 @@
* (the "License"). You may not use this file except in compliance
* with the License.
*
- * You can obtain a copy of the license at
- * trunk/opendj3/legal-notices/CDDLv1_0.txt
+ * You can obtain a copy of the license at legal-notices/CDDLv1_0.txt
* or http://forgerock.org/license/CDDLv1.0.html.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
- * file and include the License file at
- * trunk/opendj3/legal-notices/CDDLv1_0.txt. If applicable,
- * add the following below this CDDL HEADER, with the fields enclosed
- * by brackets "[]" replaced with your own identifying information:
+ * file and include the License file at legal-notices/CDDLv1_0.txt.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information:
* Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
@@ -27,521 +26,391 @@
package com.forgerock.opendj.util;
-
-
import java.util.Iterator;
import java.util.NoSuchElementException;
-
-
/**
* Utility methods for manipulating {@link Iterator}s.
*/
-public final class Iterators
-{
- private static final class ArrayIterator<M> implements Iterator<M>
- {
- private int i = 0;
- private final M[] a;
+public final class Iterators {
+ private static final class ArrayIterator<M> implements Iterator<M> {
+ private int i = 0;
+ private final M[] a;
-
-
- // Constructed via factory methods.
- private ArrayIterator(final M[] a)
- {
- this.a = a;
- }
-
-
-
- /**
- * {@inheritDoc}
- */
- public boolean hasNext()
- {
- return i < a.length;
- }
-
-
-
- /**
- * {@inheritDoc}
- */
- public M next()
- {
- if (hasNext())
- {
- return a[i++];
- }
- else
- {
- throw new NoSuchElementException();
- }
- }
-
-
-
- /**
- * {@inheritDoc}
- */
- public void remove()
- {
- throw new UnsupportedOperationException();
- }
-
- };
-
-
-
- private static final class EmptyIterator<M> implements Iterator<M>
- {
- /**
- * {@inheritDoc}
- */
- public boolean hasNext()
- {
- return false;
- }
-
-
-
- /**
- * {@inheritDoc}
- */
- public M next()
- {
- throw new NoSuchElementException();
- }
-
-
-
- /**
- * {@inheritDoc}
- */
- public void remove()
- {
- throw new UnsupportedOperationException();
- }
- }
-
-
-
- private static final class FilteredIterator<M, P> implements Iterator<M>
- {
-
- private boolean hasNextMustIterate = true;
- private final Iterator<M> iterator;
- private M next = null;
-
- private final P parameter;
- private final Predicate<? super M, P> predicate;
-
-
-
- // Constructed via factory methods.
- private FilteredIterator(final Iterator<M> iterator,
- final Predicate<? super M, P> predicate, final P p)
- {
- this.iterator = iterator;
- this.predicate = predicate;
- this.parameter = p;
- }
-
-
-
- /**
- * {@inheritDoc}
- */
- public boolean hasNext()
- {
- if (hasNextMustIterate)
- {
- hasNextMustIterate = false;
- while (iterator.hasNext())
- {
- next = iterator.next();
- if (predicate.matches(next, parameter))
- {
- return true;
- }
+ // Constructed via factory methods.
+ private ArrayIterator(final M[] a) {
+ this.a = a;
}
- next = null;
- return false;
- }
- else
- {
- return next != null;
- }
+
+ /**
+ * {@inheritDoc}
+ */
+ public boolean hasNext() {
+ return i < a.length;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public M next() {
+ if (hasNext()) {
+ return a[i++];
+ } else {
+ throw new NoSuchElementException();
+ }
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public void remove() {
+ throw new UnsupportedOperationException();
+ }
+
+ };
+
+ private static final class EmptyIterator<M> implements Iterator<M> {
+ /**
+ * {@inheritDoc}
+ */
+ public boolean hasNext() {
+ return false;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public M next() {
+ throw new NoSuchElementException();
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public void remove() {
+ throw new UnsupportedOperationException();
+ }
}
+ private static final class FilteredIterator<M, P> implements Iterator<M> {
+ private boolean hasNextMustIterate = true;
+ private final Iterator<M> iterator;
+ private M next = null;
+
+ private final P parameter;
+ private final Predicate<? super M, P> predicate;
+
+ // Constructed via factory methods.
+ private FilteredIterator(final Iterator<M> iterator,
+ final Predicate<? super M, P> predicate, final P p) {
+ this.iterator = iterator;
+ this.predicate = predicate;
+ this.parameter = p;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public boolean hasNext() {
+ if (hasNextMustIterate) {
+ hasNextMustIterate = false;
+ while (iterator.hasNext()) {
+ next = iterator.next();
+ if (predicate.matches(next, parameter)) {
+ return true;
+ }
+ }
+ next = null;
+ return false;
+ } else {
+ return next != null;
+ }
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public M next() {
+ if (!hasNext()) {
+ throw new NoSuchElementException();
+ }
+ hasNextMustIterate = true;
+ return next;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public void remove() {
+ iterator.remove();
+ }
+
+ }
+
+ private static final class SingletonIterator<M> implements Iterator<M> {
+ private M value;
+
+ // Constructed via factory methods.
+ private SingletonIterator(final M value) {
+ this.value = value;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public boolean hasNext() {
+ return value != null;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public M next() {
+ if (value != null) {
+ final M tmp = value;
+ value = null;
+ return tmp;
+ } else {
+ throw new NoSuchElementException();
+ }
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public void remove() {
+ throw new UnsupportedOperationException();
+ }
+
+ }
+
+ private static final class TransformedIterator<M, N, P> implements Iterator<N> {
+
+ private final Function<? super M, ? extends N, P> function;
+ private final Iterator<M> iterator;
+ private final P parameter;
+
+ // Constructed via factory methods.
+ private TransformedIterator(final Iterator<M> iterator,
+ final Function<? super M, ? extends N, P> function, final P p) {
+ this.iterator = iterator;
+ this.function = function;
+ this.parameter = p;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public boolean hasNext() {
+ return iterator.hasNext();
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public N next() {
+ return function.apply(iterator.next(), parameter);
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public void remove() {
+ iterator.remove();
+ }
+
+ }
+
+ private static final class UnmodifiableIterator<M> implements Iterator<M> {
+ private final Iterator<M> iterator;
+
+ private UnmodifiableIterator(final Iterator<M> iterator) {
+ this.iterator = iterator;
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public boolean hasNext() {
+ return iterator.hasNext();
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public M next() {
+ return iterator.next();
+ }
+
+ /**
+ * {@inheritDoc}
+ */
+ public void remove() {
+ throw new UnsupportedOperationException();
+ }
+ }
+
+ private static final Iterator<Object> EMPTY_ITERATOR = new EmptyIterator<Object>();
/**
- * {@inheritDoc}
+ * Returns an iterator over the elements contained in {@code a}. The
+ * returned iterator does not support element removal via the
+ * {@code remove()} method.
+ *
+ * @param <M>
+ * The type of elements contained in {@code a}.
+ * @param a
+ * The array of elements to be returned by the iterator.
+ * @return An iterator over the elements contained in {@code a}.
*/
- public M next()
- {
- if (!hasNext())
- {
- throw new NoSuchElementException();
- }
- hasNextMustIterate = true;
- return next;
+ public static <M> Iterator<M> arrayIterator(final M[] a) {
+ return new ArrayIterator<M>(a);
}
-
-
/**
- * {@inheritDoc}
+ * Returns an immutable empty iterator.
+ *
+ * @param <M>
+ * The required type of the empty iterator.
+ * @return An immutable empty iterator.
*/
- public void remove()
- {
- iterator.remove();
+ @SuppressWarnings("unchecked")
+ public static <M> Iterator<M> emptyIterator() {
+ return (Iterator<M>) EMPTY_ITERATOR;
}
- }
-
-
-
- private static final class SingletonIterator<M> implements Iterator<M>
- {
- private M value;
-
-
-
- // Constructed via factory methods.
- private SingletonIterator(final M value)
- {
- this.value = value;
- }
-
-
-
/**
- * {@inheritDoc}
+ * Returns a filtered view of {@code iterator} containing only those
+ * elements which match {@code predicate}. The returned iterator supports
+ * element removal via the {@code remove()} method subject to any
+ * constraints imposed by {@code iterator}.
+ *
+ * @param <M>
+ * The type of elements contained in {@code iterator}.
+ * @param <P>
+ * The type of the additional parameter to the predicate's
+ * {@code matches} method. Use {@link java.lang.Void} for
+ * predicates that do not need an additional parameter.
+ * @param iterator
+ * The iterator to be filtered.
+ * @param predicate
+ * The predicate.
+ * @param p
+ * A predicate specified parameter.
+ * @return A filtered view of {@code iterator} containing only those
+ * elements which match {@code predicate}.
*/
- public boolean hasNext()
- {
- return value != null;
+ public static <M, P> Iterator<M> filteredIterator(final Iterator<M> iterator,
+ final Predicate<? super M, P> predicate, final P p) {
+ return new FilteredIterator<M, P>(iterator, predicate, p);
}
-
-
/**
- * {@inheritDoc}
+ * Returns a filtered view of {@code iterator} containing only those
+ * elements which match {@code predicate}. The returned iterator supports
+ * element removal via the {@code remove()} method subject to any
+ * constraints imposed by {@code iterator}.
+ *
+ * @param <M>
+ * The type of elements contained in {@code iterator}.
+ * @param iterator
+ * The iterator to be filtered.
+ * @param predicate
+ * The predicate.
+ * @return A filtered view of {@code iterator} containing only those
+ * elements which match {@code predicate}.
*/
- public M next()
- {
- if (value != null)
- {
- final M tmp = value;
- value = null;
- return tmp;
- }
- else
- {
- throw new NoSuchElementException();
- }
+ public static <M> Iterator<M> filteredIterator(final Iterator<M> iterator,
+ final Predicate<? super M, Void> predicate) {
+ return new FilteredIterator<M, Void>(iterator, predicate, null);
}
-
-
/**
- * {@inheritDoc}
+ * Returns an iterator containing the single element {@code value}. The
+ * returned iterator does not support element removal via the
+ * {@code remove()} method.
+ *
+ * @param <M>
+ * The type of the single element {@code value}.
+ * @param value
+ * The single element to be returned by the iterator.
+ * @return An iterator containing the single element {@code value}.
*/
- public void remove()
- {
- throw new UnsupportedOperationException();
+ public static <M> Iterator<M> singletonIterator(final M value) {
+ return new SingletonIterator<M>(value);
}
- }
-
-
-
- private static final class TransformedIterator<M, N, P> implements
- Iterator<N>
- {
-
- private final Function<? super M, ? extends N, P> function;
- private final Iterator<M> iterator;
- private final P parameter;
-
-
-
- // Constructed via factory methods.
- private TransformedIterator(final Iterator<M> iterator,
- final Function<? super M, ? extends N, P> function, final P p)
- {
- this.iterator = iterator;
- this.function = function;
- this.parameter = p;
- }
-
-
-
/**
- * {@inheritDoc}
+ * Returns a view of {@code iterator} whose values have been mapped to
+ * elements of type {@code N} using {@code function}. The returned iterator
+ * supports element removal via the {@code remove()} method subject to any
+ * constraints imposed by {@code iterator}.
+ *
+ * @param <M>
+ * The type of elements contained in {@code iterator}.
+ * @param <N>
+ * The type of elements contained in the returned iterator.
+ * @param <P>
+ * The type of the additional parameter to the function's
+ * {@code apply} method. Use {@link java.lang.Void} for functions
+ * that do not need an additional parameter.
+ * @param iterator
+ * The iterator to be transformed.
+ * @param function
+ * The function.
+ * @param p
+ * A predicate specified parameter.
+ * @return A view of {@code iterator} whose values have been mapped to
+ * elements of type {@code N} using {@code function}.
*/
- public boolean hasNext()
- {
- return iterator.hasNext();
+ public static <M, N, P> Iterator<N> transformedIterator(final Iterator<M> iterator,
+ final Function<? super M, ? extends N, P> function, final P p) {
+ return new TransformedIterator<M, N, P>(iterator, function, p);
}
-
-
/**
- * {@inheritDoc}
+ * Returns a view of {@code iterator} whose values have been mapped to
+ * elements of type {@code N} using {@code function}. The returned iterator
+ * supports element removal via the {@code remove()} method subject to any
+ * constraints imposed by {@code iterator}.
+ *
+ * @param <M>
+ * The type of elements contained in {@code iterator}.
+ * @param <N>
+ * The type of elements contained in the returned iterator.
+ * @param iterator
+ * The iterator to be transformed.
+ * @param function
+ * The function.
+ * @return A view of {@code iterator} whose values have been mapped to
+ * elements of type {@code N} using {@code function}.
*/
- public N next()
- {
- return function.apply(iterator.next(), parameter);
+ public static <M, N> Iterator<N> transformedIterator(final Iterator<M> iterator,
+ final Function<? super M, ? extends N, Void> function) {
+ return new TransformedIterator<M, N, Void>(iterator, function, null);
}
-
-
/**
- * {@inheritDoc}
+ * Returns a read-only view of {@code iterator} which does not support
+ * element removal via the {@code remove()}. Attempts to use the
+ * {@code remove()} method will result in a
+ * {@code UnsupportedOperationException}.
+ *
+ * @param <M>
+ * The type of elements contained in {@code iterator}.
+ * @param iterator
+ * The iterator to be made read-only.
+ * @return A read-only view of {@code iterator} which does not support
+ * element removal via the {@code remove()}.
*/
- public void remove()
- {
- iterator.remove();
+ public static <M> Iterator<M> unmodifiableIterator(final Iterator<M> iterator) {
+ return new UnmodifiableIterator<M>(iterator);
}
- }
-
-
-
- private static final class UnmodifiableIterator<M> implements Iterator<M>
- {
- private final Iterator<M> iterator;
-
-
-
- private UnmodifiableIterator(final Iterator<M> iterator)
- {
- this.iterator = iterator;
+ // Prevent instantiation
+ private Iterators() {
+ // Do nothing.
}
-
-
- /**
- * {@inheritDoc}
- */
- public boolean hasNext()
- {
- return iterator.hasNext();
- }
-
-
-
- /**
- * {@inheritDoc}
- */
- public M next()
- {
- return iterator.next();
- }
-
-
-
- /**
- * {@inheritDoc}
- */
- public void remove()
- {
- throw new UnsupportedOperationException();
- }
- }
-
-
-
- private static final Iterator<Object> EMPTY_ITERATOR = new EmptyIterator<Object>();
-
-
-
- /**
- * Returns an iterator over the elements contained in {@code a}. The returned
- * iterator does not support element removal via the {@code remove()} method.
- *
- * @param <M>
- * The type of elements contained in {@code a}.
- * @param a
- * The array of elements to be returned by the iterator.
- * @return An iterator over the elements contained in {@code a}.
- */
- public static <M> Iterator<M> arrayIterator(final M[] a)
- {
- return new ArrayIterator<M>(a);
- }
-
-
-
- /**
- * Returns an immutable empty iterator.
- *
- * @param <M>
- * The required type of the empty iterator.
- * @return An immutable empty iterator.
- */
- @SuppressWarnings("unchecked")
- public static <M> Iterator<M> emptyIterator()
- {
- return (Iterator<M>) EMPTY_ITERATOR;
- }
-
-
-
- /**
- * Returns a filtered view of {@code iterator} containing only those elements
- * which match {@code predicate}. The returned iterator supports element
- * removal via the {@code remove()} method subject to any constraints imposed
- * by {@code iterator}.
- *
- * @param <M>
- * The type of elements contained in {@code iterator}.
- * @param <P>
- * The type of the additional parameter to the predicate's
- * {@code matches} method. Use {@link java.lang.Void} for predicates
- * that do not need an additional parameter.
- * @param iterator
- * The iterator to be filtered.
- * @param predicate
- * The predicate.
- * @param p
- * A predicate specified parameter.
- * @return A filtered view of {@code iterator} containing only those elements
- * which match {@code predicate}.
- */
- public static <M, P> Iterator<M> filteredIterator(final Iterator<M> iterator,
- final Predicate<? super M, P> predicate, final P p)
- {
- return new FilteredIterator<M, P>(iterator, predicate, p);
- }
-
-
-
- /**
- * Returns a filtered view of {@code iterator} containing only those elements
- * which match {@code predicate}. The returned iterator supports element
- * removal via the {@code remove()} method subject to any constraints imposed
- * by {@code iterator}.
- *
- * @param <M>
- * The type of elements contained in {@code iterator}.
- * @param iterator
- * The iterator to be filtered.
- * @param predicate
- * The predicate.
- * @return A filtered view of {@code iterator} containing only those elements
- * which match {@code predicate}.
- */
- public static <M> Iterator<M> filteredIterator(final Iterator<M> iterator,
- final Predicate<? super M, Void> predicate)
- {
- return new FilteredIterator<M, Void>(iterator, predicate, null);
- }
-
-
-
- /**
- * Returns an iterator containing the single element {@code value}. The
- * returned iterator does not support element removal via the {@code remove()}
- * method.
- *
- * @param <M>
- * The type of the single element {@code value}.
- * @param value
- * The single element to be returned by the iterator.
- * @return An iterator containing the single element {@code value}.
- */
- public static <M> Iterator<M> singletonIterator(final M value)
- {
- return new SingletonIterator<M>(value);
- }
-
-
-
- /**
- * Returns a view of {@code iterator} whose values have been mapped to
- * elements of type {@code N} using {@code function}. The returned iterator
- * supports element removal via the {@code remove()} method subject to any
- * constraints imposed by {@code iterator}.
- *
- * @param <M>
- * The type of elements contained in {@code iterator}.
- * @param <N>
- * The type of elements contained in the returned iterator.
- * @param <P>
- * The type of the additional parameter to the function's
- * {@code apply} method. Use {@link java.lang.Void} for functions
- * that do not need an additional parameter.
- * @param iterator
- * The iterator to be transformed.
- * @param function
- * The function.
- * @param p
- * A predicate specified parameter.
- * @return A view of {@code iterator} whose values have been mapped to
- * elements of type {@code N} using {@code function}.
- */
- public static <M, N, P> Iterator<N> transformedIterator(
- final Iterator<M> iterator,
- final Function<? super M, ? extends N, P> function, final P p)
- {
- return new TransformedIterator<M, N, P>(iterator, function, p);
- }
-
-
-
- /**
- * Returns a view of {@code iterator} whose values have been mapped to
- * elements of type {@code N} using {@code function}. The returned iterator
- * supports element removal via the {@code remove()} method subject to any
- * constraints imposed by {@code iterator}.
- *
- * @param <M>
- * The type of elements contained in {@code iterator}.
- * @param <N>
- * The type of elements contained in the returned iterator.
- * @param iterator
- * The iterator to be transformed.
- * @param function
- * The function.
- * @return A view of {@code iterator} whose values have been mapped to
- * elements of type {@code N} using {@code function}.
- */
- public static <M, N> Iterator<N> transformedIterator(
- final Iterator<M> iterator,
- final Function<? super M, ? extends N, Void> function)
- {
- return new TransformedIterator<M, N, Void>(iterator, function, null);
- }
-
-
-
- /**
- * Returns a read-only view of {@code iterator} which does not support element
- * removal via the {@code remove()}. Attempts to use the {@code remove()}
- * method will result in a {@code UnsupportedOperationException}.
- *
- * @param <M>
- * The type of elements contained in {@code iterator}.
- * @param iterator
- * The iterator to be made read-only.
- * @return A read-only view of {@code iterator} which does not support element
- * removal via the {@code remove()}.
- */
- public static <M> Iterator<M> unmodifiableIterator(final Iterator<M> iterator)
- {
- return new UnmodifiableIterator<M>(iterator);
- }
-
-
-
- // Prevent instantiation
- private Iterators()
- {
- // Do nothing.
- }
-
}
--
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