/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.jackrabbit.rmi.iterator;
import java.util.NoSuchElementException;
import javax.jcr.RangeIterator;
/**
* Array implementation of the JCR
* {@link javax.jcr.RangeIterator RangeIterator} interface. This class
* implements the RangeIterator functionality for an underlying array
* of objects. Used as the base class for the type-specific iterator
* classes defined in this package.
*/
public class ArrayIterator implements RangeIterator {
/** The current iterator position. */
private int position;
/** The underlying array of objects. */
private Object[] array;
/**
* Creates an iterator for the given array of objects.
*
* @param array the objects to iterate
*/
public ArrayIterator(Object[] array) {
this.position = 0;
this.array = array;
}
/** {@inheritDoc} */
public boolean hasNext() {
return (position < array.length);
}
/** {@inheritDoc} */
public Object next() {
return array[position++];
}
/** {@inheritDoc} */
public void remove() {
throw new UnsupportedOperationException();
}
/** {@inheritDoc} */
public void skip(long items) {
position += items;
if (position > array.length) {
position = array.length;
throw new NoSuchElementException(
"Skipped past the last element of the iterator");
}
}
/** {@inheritDoc} */
public long getSize() {
return array.length;
}
/** {@inheritDoc} */
public long getPosition() {
return position;
}
}