/**
* 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.camel.dataformat.beanio;
import java.io.Closeable;
import java.io.IOException;
import java.util.Iterator;
import org.beanio.BeanReader;
public class BeanIOIterator implements Iterator<Object>, Closeable {
private BeanReader reader;
private transient Object next;
private transient Object forceNext;
public BeanIOIterator(BeanReader reader) {
this.reader = reader;
this.next = next();
}
@Override
public void close() throws IOException {
if (reader != null) {
reader.close();
reader = null;
}
}
@Override
public boolean hasNext() {
return next != null;
}
@Override
public Object next() {
Object answer = next;
if (answer == null) {
answer = reader.read();
// after read we may force a next
if (forceNext != null) {
answer = forceNext;
forceNext = null;
}
} else {
next = reader.read();
// after read we may force a next
if (forceNext != null) {
next = forceNext;
forceNext = null;
}
}
return answer;
}
@Override
public void remove() {
// noop
}
/**
* Sets a custom object as the next, such as from a custom error handler
*/
public void setNext(Object next) {
this.forceNext = next;
}
}