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/*
 * Copyright 1998-2014 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
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 *   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.ma2;

import java.nio.ByteBuffer;
import java.nio.DoubleBuffer;

/**
 * Concrete implementation of Array specialized for doubles.
 * Data storage is with 1D java array of doubles.
 *
 * @see Array
 * @author caron
 */
public class ArrayDouble extends Array {

  /** package private. use Array.factory() */
  static ArrayDouble factory(Index index) {
    return ArrayDouble.factory(index, null);
  }

  /* Create new ArrayDouble with given indexImpl and backing store.
   * Should be private.
   * @param index use this Index
   * @param stor. use this storage. if null, allocate.
   * @return. new ArrayDouble.D or ArrayDouble object.
   */
  static ArrayDouble factory( Index index, double [] storage) {
    switch (index.getRank()) {
      case 0 : return new ArrayDouble.D0(index, storage);
      case 1 : return new ArrayDouble.D1(index, storage);
      case 2 : return new ArrayDouble.D2(index, storage);
      case 3 : return new ArrayDouble.D3(index, storage);
      case 4 : return new ArrayDouble.D4(index, storage);
      case 5 : return new ArrayDouble.D5(index, storage);
      case 6 : return new ArrayDouble.D6(index, storage);
      case 7 : return new ArrayDouble.D7(index, storage);
      default : return new ArrayDouble(index, storage);
    }
  }

  ///////////////////////////////////////////////////////////////////////////////
  protected double[] storageD;

  /**
  * Create a new Array of type double and the given shape.
  * dimensions.length determines the rank of the new Array.
  * @param shape the shape of the Array.
  */
  public ArrayDouble(int [] shape) {
    super(shape);
    storageD = new double[(int) indexCalc.getSize()];
  }


  /** create new Array with given indexImpl and the same backing store */
  protected Array createView( Index index) {
    return ArrayDouble.factory(index, storageD);
  }

 /**
  * Create a new Array using the given IndexArray and backing store.
  * used for sections, and factory. Trusted package private.
  * @param ima use this IndexArray as the index
  * @param data use this as the backing store. if null, allocate
  */
  ArrayDouble(Index ima, double [] data) {
    super(ima);

    if (data != null) {
      storageD = data;
    } else {
      storageD = new double[(int) indexCalc.getSize()];
    }
  }

  /* Get underlying primitive array storage. CAUTION! You may invalidate your warrentee! */
  public Object getStorage() { return storageD; }

  // copy from javaArray to storage using the iterator: used by factory( Object);
  protected void copyFrom1DJavaArray(IndexIterator iter, Object javaArray) {
    double[] ja = (double []) javaArray;
    for (double aJa : ja) iter.setDoubleNext(aJa);
  }

  // copy to javaArray from storage using the iterator: used by copyToNDJavaArray;
  protected void copyTo1DJavaArray(IndexIterator iter, Object javaArray) {
    double[] ja = (double []) javaArray;
    for (int i=0; i