OAbstractSourceExtractor.java example

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orientdb-master
/*
 *
 *  * Copyright 2010-2014 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.
 *
 */

package com.orientechnologies.orient.etl.extractor;

import java.io.IOException;
import java.io.Reader;

/**
 * ETL abstract extractor.
 */
public abstract class OAbstractSourceExtractor extends OAbstractExtractor {
  protected Reader reader;

  @Override
  public void extract(final Reader iReader) {
    reader = iReader;
  }

  @Override
  public boolean hasNext() {
    if (reader == null)
      return false;

    try {
      return reader.ready();
    } catch (IOException e) {
      throw new OExtractorException(e);
    }
  }

  @Override
  public void end() {
    if (reader != null)
      try {
        reader.close();
      } catch (IOException e) {
      }

    super.end();
  }
}