org.eclipse.blockchain.core/src/org/eclipse/blockchain/core/MultidimensionalArrayValueCreator.java

/*
 * Copyright (c) Robert Bosch GmbH. All rights reserved.
 */
package org.eclipse.blockchain.core;

import java.util.ArrayList;
import java.util.List;

/**
 * @author ADG5COB
 */
public class MultidimensionalArrayValueCreator {

  private String[] reverseElements(final String[] input) {
    String[] output = new String[input.length];
    int ind = 0;
    for (int x = (input.length - 1); x > -1; x--) {
      output[ind++] = input[x];
    }
    return output;
  }

  /**
   * This converts the given array input into a multi-dimensional list based on dimension
   *
   * @param inputArr - The array elements
   * @param dimensionSizes - The sizes of various dimension's
   * @return - Multidimensional list
   */
  public List<Object> getValuesAsList(final Object[] inputArr, final String dimensionSizes) {
    List<Object> theFinalObject = null;
    ListCreator listCreator = new ListCreator();
    String[] dimensionSizesArr = reverseElements(dimensionSizes.split(","));
    int depth = 1;
    if (dimensionSizesArr.length == 1) {
      List<Object> theList = new ArrayList<>();
      for (Object s : inputArr) {
        theList.add(s);
      }
      theFinalObject = theList;
    }
    else {// This separates the iput elements into 1st level list's
      // Create a parent container list
      listCreator.getParentList(depth, true);

      int currentDimensionSize = Integer.parseInt(dimensionSizesArr[dimensionSizesArr.length - 1]);
      int cnt = 1;
      for (int f = 0; f < inputArr.length; f++) {
        if ((cnt == 1) || (cnt > currentDimensionSize) || (f == (inputArr.length - 1))) {
          if ((f == (inputArr.length - 1))) {// This means the last element is being dealt so we have to add it to the
                                             // list
            listCreator.addToCurrentList(depth, false, inputArr[f]);
          }
          // create new List and Add it; and add previous list(if existing) to a parent list and reset cnt
          cnt = 1;
          if (!listCreator.isCurrentListEmpty()) {
            listCreator.addToParentList(depth, false);
          }
          listCreator.addToCurrentList(depth, true, inputArr[f]);
        }
        else {
          // add element to current list
          listCreator.addToCurrentList(depth, false, inputArr[f]);
        }
        cnt++;
      }
      theFinalObject = listCreator.getParentList(depth, false);
      depth++;
      if (dimensionSizesArr.length > 2) {
        for (int h = (dimensionSizesArr.length - 2); h > 0; h--) {
          currentDimensionSize = Integer.parseInt(dimensionSizesArr[h]);
          theFinalObject = listCreator.segmentList(theFinalObject, depth, currentDimensionSize);
          depth++;
        }
      }
    }
    return theFinalObject;
  }

}