1.1 --- a/samples/composition/src-api2.0-runtime/api/Arithmetica.java Thu Feb 12 11:00:41 2009 +0100
1.2 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000
1.3 @@ -1,71 +0,0 @@
1.4 -package api;
1.5 -
1.6 -import org.apidesign.runtime.check.RuntimeCheck;
1.7 -
1.8 -/** Class to simplify arithmetical operations, improved version to compute
1.9 - * the sum for ranges, but only if the virtual machine is configured to
1.10 - * run in incompatible mode.
1.11 - *
1.12 - * @author Jaroslav Tulach <jtulach@netbeans.org>
1.13 - * @version 2.0
1.14 - */
1.15 -public class Arithmetica {
1.16 - public int sumTwo(int one, int second) {
1.17 - return one + second;
1.18 - }
1.19 -
1.20 - public int sumAll(int... numbers) {
1.21 - if (numbers.length == 0) {
1.22 - return 0;
1.23 - }
1.24 - int sum = numbers[0];
1.25 - for (int i = 1; i < numbers.length; i++) {
1.26 - sum = sumTwo(sum, numbers[i]);
1.27 - }
1.28 - return sum;
1.29 - }
1.30 -
1.31 - public int sumRange(int from, int to) {
1.32 - if (calledByV2AwareLoader()) {
1.33 - return sumRange2(from, to);
1.34 - } else {
1.35 - return sumRange1(from, to);
1.36 - }
1.37 - }
1.38 -
1.39 - private int sumRange1(int from, int to) {
1.40 - int len = to - from;
1.41 - if (len < 0) {
1.42 - len = -len;
1.43 - from = to;
1.44 - }
1.45 - int[] array = new int[len + 1];
1.46 - for (int i = 0; i <= len; i++) {
1.47 - array[i] = from + i;
1.48 - }
1.49 - return sumAll(array);
1.50 - }
1.51 -
1.52 - private int sumRange2(int from, int to) {
1.53 - return (from + to) * (Math.abs(to - from) + 1) / 2;
1.54 - }
1.55 -
1.56 - private static boolean calledByV2AwareLoader() {
1.57 - // BEGIN: design.composition.arith2.6.runtime
1.58 - StackTraceElement[] arr = Thread.currentThread().getStackTrace();
1.59 - ClassLoader myLoader = Arithmetica.class.getClassLoader();
1.60 - for (int i = 0; i < arr.length; i++) {
1.61 - ClassLoader caller = arr[i].getClass().getClassLoader();
1.62 - if (myLoader == caller) {
1.63 - continue;
1.64 - }
1.65 - if (RuntimeCheck.requiresAtLeast("2.6", "api.Arithmetica", caller)) {
1.66 - return true;
1.67 - }
1.68 - return false;
1.69 - }
1.70 - return true;
1.71 - // END: design.composition.arith2.6.runtime
1.72 - }
1.73 -
1.74 -}