/*
 * 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.uima.analysis_engine.impl;

import org.apache.uima.analysis_engine.AnalysisEngineProcessException;
import org.apache.uima.analysis_engine.CasIterator;
import org.apache.uima.analysis_engine.JCasIterator;
import org.apache.uima.cas.CASException;
import org.apache.uima.jcas.JCas;

/**
 * Wraps a CasIterator as a JCasIterator
 */
public class JCasIteratorWrapper implements JCasIterator {
  CasIterator mCasIterator;

  public JCasIteratorWrapper(CasIterator aCasIterator) {
    mCasIterator = aCasIterator;
  }

  /*
   * (non-Javadoc)
   * 
   * @see org.apache.uima.core.CasIterator#hasNext()
   */
  @Override
  public boolean hasNext() throws AnalysisEngineProcessException {
    return mCasIterator.hasNext();
  }

  /*
   * (non-Javadoc)
   * 
   * @see org.apache.uima.analysis_engine.CasIterator#next()
   */
  @Override
  public JCas next() throws AnalysisEngineProcessException {
    try {
      return mCasIterator.next().getJCas();
    } catch (CASException e) {
      throw new AnalysisEngineProcessException(e);
    }
  }

  /*
   * (non-Javadoc)
   * 
   * @see org.apache.uima.analysis_engine.JCasIterator#release()
   */
  @Override
  public void release() {
    mCasIterator.release();
  }

}
