/*
  *
  *  *  Copyright 2014 Orient Technologies LTD (info(at)orientechnologies.com)
  *  *
  *  *  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.
  *  *
  *  * For more information: http://www.orientechnologies.com
  *
  */
package com.orientechnologies.orient.core.db.record;

import java.util.Iterator;

import com.orientechnologies.orient.core.record.ORecord;

/**
 * Implementation of Iterator that keeps track of changes to the source record avoiding to call setDirty() by hand.
 * 
 * @author Luca Garulli (l.garulli--at--orientechnologies.com)
 * 
 */
public class ORecordTrackedIterator implements Iterator<OIdentifiable> {
  final private ORecord     sourceRecord;
  final private Iterator<?> underlying;

  public ORecordTrackedIterator(final ORecord iSourceRecord, final Iterator<?> iIterator) {
    this.sourceRecord = iSourceRecord;
    this.underlying = iIterator;
  }

  public OIdentifiable next() {
    return (OIdentifiable) underlying.next();
  }

  public boolean hasNext() {
    return underlying.hasNext();
  }

  public void remove() {
    underlying.remove();
    if (sourceRecord != null)
      sourceRecord.setDirty();
  }
}