ucar.nc2.ft.point.StructureDataIteratorLimited Maven / Gradle / Ivy

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/*
 * Copyright 1998-2009 University Corporation for Atmospheric Research/Unidata
 *
 * Portions of this software were developed by the Unidata Program at the
 * University Corporation for Atmospheric Research.
 *
 * Access and use of this software shall impose the following obligations
 * and understandings on the user. The user is granted the right, without
 * any fee or cost, to use, copy, modify, alter, enhance and distribute
 * this software, and any derivative works thereof, and its supporting
 * documentation for any purpose whatsoever, provided that this entire
 * notice appears in all copies of the software, derivative works and
 * supporting documentation.  Further, UCAR requests that the user credit
 * UCAR/Unidata in any publications that result from the use of this
 * software or in any product that includes this software. The names UCAR
 * and/or Unidata, however, may not be used in any advertising or publicity
 * to endorse or promote any products or commercial entity unless specific
 * written permission is obtained from UCAR/Unidata. The user also
 * understands that UCAR/Unidata is not obligated to provide the user with
 * any support, consulting, training or assistance of any kind with regard
 * to the use, operation and performance of this software nor to provide
 * the user with any updates, revisions, new versions or "bug fixes."
 *
 * THIS SOFTWARE IS PROVIDED BY UCAR/UNIDATA "AS IS" AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL UCAR/UNIDATA BE LIABLE FOR ANY SPECIAL,
 * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
 * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
 * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
 * WITH THE ACCESS, USE OR PERFORMANCE OF THIS SOFTWARE.
 */
package ucar.nc2.ft.point;

import ucar.ma2.StructureDataIterator;
import ucar.ma2.StructureData;

import java.io.IOException;

/**
 * Read a maximum number of sdatas from a StructureDataIterator.
 * @author caron
 * @since Apr 23, 2008
 */
public class StructureDataIteratorLimited implements StructureDataIterator {

  private StructureDataIterator org;
  private int limit, count;

  public StructureDataIteratorLimited(StructureDataIterator org, int limit) throws IOException {
    this.org = org;
    this.limit = limit;
    this.count = 0;
  }

  @Override
  public StructureData next() throws IOException {
    return org.next();
  }

  @Override
  public boolean hasNext() throws IOException {
    return count < limit && org.hasNext();
  }

  @Override
  public StructureDataIterator reset() {
    this.count = 0;
    org = org.reset();
    return this;
  }

  @Override
  public void setBufferSize(int bytes) {
    org.setBufferSize( bytes);
  }

  @Override
  public int getCurrentRecno() {
    return org.getCurrentRecno();
  }
  
}