/*
* Copyright 2002-2005 the original author or authors.
*
* Licensed 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 net.sf.sojo.util;
import java.lang.reflect.Array;
import java.util.Iterator;
import java.util.NoSuchElementException;
/**
* An array want to handle how a collection, by iterat over all elements in the array.
* By default the Array haven't an iterator. This implementation want to close this distance.
*
* @author linke
*
*/
public class ArrayIterator implements Iterator {
private Object arrayObject = null;
private int pos = 0;
private int length = 0;
public ArrayIterator(Object pvArrayObjects) {
if (pvArrayObjects == null) {
throw new IllegalArgumentException("Param ArrayObject must be not null");
}
if (pvArrayObjects.getClass().isArray() == false) {
throw new IllegalArgumentException("Param ArrayObject must be an Array");
}
arrayObject = pvArrayObjects;
length = Array.getLength(arrayObject);
resetPosition();
}
public final void resetPosition() { pos = 0; }
public int getLength() { return length; }
public int getPos() { return pos; }
public boolean hasNext() {
return (pos < length);
}
public Object next() {
if (pos >= length) {
throw new NoSuchElementException("No more elements in the array (the pointer is after the last element).");
}
Object lvValue = Array.get (arrayObject, pos);
pos++;
return lvValue;
}
public void remove() {
// do nothing
}
}
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