public static String digest(Object object) {
try {
return digest(ObjectUtil.objectToBytes(object));
} catch (Exception ex) {
throw new RuntimeException(ex);
}
}
public static String sha1(final Object o) {
try {
return doDigestForByteArray(ObjectUtil.toArray(o), "SHA-1");
} catch (IOException e) {
}
return null;
}
/**
* Implementation of the OCL <tt>Collection::count(object : T) : Integer</tt> operation.
*
* @param self the source collection
* @param object an object
* @return the number of occurrences of the object in the collection
*/
public static int count(Collection<?> self, Object object) {
int count = 0;
for (Object next : self) {
if (ObjectUtil.equal(next, object)) {
count++;
}
}
return count;
}
/**
* Computes the hash of a collection, accounting for the similar hashing of primitive numeric
* values that OCL considers equal but Java does not.
*
* @param c a collection
* @return its hash
*/
public static int hashCode(Collection<?> c) {
int result = 1;
for (Object next : c) {
result = 37 * result + ObjectUtil.hashCode(next);
}
return result;
}
/**
* Implementation of the OCL
*
* <ul>
* <li><tt>OrderedSet::indexOf(object : T) : Integer</tt>
* <li><tt>Sequence::indexOf(object : T) : Integer</tt>
* </ul>
*
* operations.
*
* @param self the source collection
* @param object an object
* @return the index of the object in the source collection
*/
public static <E> Integer indexOf(Collection<? extends E> self, E object) {
int index = 1;
for (E next : self) {
if (ObjectUtil.equal(object, next)) {
return index;
}
index++;
}
return null; // invalid
}
public static boolean isEmpty(String str) {
return ObjectUtil.isNull(str) || str.length() == 0;
}
/** 计算贝塞尔曲线点 */
private static void calculateBezier() {
PointBean mControlPoint; // 贝塞尔控制点
PointBean mBezierPoint; // 贝塞尔曲线上的点
PointBean mStartPoint; // 贝塞尔曲线起点
PointBean mEndPoint; // 贝塞尔曲线终点
float t = 0.01f; // 默认t取0.01
float BezierX;
float BezierY;
mControlPoint = mBezierPoints.get(1);
mStartPoint = mBezierPoints.get(0);
mEndPoint = mBezierPoints.get(2);
mBezierResult.add(mStartPoint);
// 先计算两点之间距离，根据距离选择t
float distance; // 起点和终点两点间距离
distance = calculateDistance(mStartPoint, mEndPoint);
t = 1 / distance; // 再根据距离选取t的取值 100->0.01, 10->0.1, 1->1
float step = t / 2; // 除以2再取多一点的点
if (t > 0 && t < 1) { // t取值范围
// 公式 (1-t)^2 * x1 + 2 * t * (1-t) * x0 + t^2 * x2 = x
for (; t <= 1.0f; t += step) {
BezierX =
(float) Math.pow(1 - t, 2) * mBezierPoints.get(0).getX()
+ 2 * t * (1 - t) * mControlPoint.getX()
+ (float) Math.pow(t, 2) * mBezierPoints.get(2).getX();
BezierY =
(float) Math.pow(1 - t, 2) * mBezierPoints.get(0).getY()
+ 2 * t * (1 - t) * mControlPoint.getY()
+ (float) Math.pow(t, 2) * mBezierPoints.get(2).getY();
mBezierPoint = new PointBean(BezierX, BezierY);
mBezierResult.add(mBezierPoint);
}
}
mBezierResult.add(mEndPoint);
switch (Constant.CURRENT_USE_TYPE) {
case Constant.PAINT:
ObjectUtil.createBezierLine(mBezierResult);
break;
case Constant.FIREWORKS:
// 需要每个点位置刚好接上，不能重叠
mDeleteLeftPoints = splicePoints(mBezierResult);
ObjectUtil.createBezierLine(mDeleteLeftPoints);
break;
case Constant.WALLPAPER:
// 需要先除去一些点
mDeleteLeftPoints = deletePoints(mBezierResult);
ObjectUtil.createBezierLine(mDeleteLeftPoints);
break;
case Constant.MOSAIC:
ObjectUtil.createBezierLine(mBezierResult);
break;
case Constant.ERASER:
ObjectUtil.createBezierLine(mBezierResult);
break;
default:
break;
}
}
@Override
public int hashCode() {
return ObjectUtil.nullSafeHashCode(_table) ^ ObjectUtil.nullSafeHashCode(_fk);
}
/**
* 业务逻辑实现 - 点击统计下载excel
*
* @param ws 工作表
* @param totals 待写入数据
* @throws WriteException
*/
@SuppressWarnings("unchecked")
private static void addLabelExcel(WritableSheet ws, List totals, List columnList)
throws WriteException {
int row = 0, column = 0;
// 设置Excel列中文标题
Iterator itColumnList = columnList.iterator();
while (itColumnList.hasNext()) {
DownloadAttribute columnTitle = (DownloadAttribute) itColumnList.next();
ws.addCell(new Label(column, row, columnTitle.getExcelName()));
column++;
}
if (totals != null && totals.size() != 0) {
Iterator itTotals = totals.iterator();
WritableFont detFont =
new WritableFont(
WritableFont.ARIAL,
10,
WritableFont.NO_BOLD,
false,
UnderlineStyle.NO_UNDERLINE,
jxl.format.Colour.BLACK);
NumberFormat pnf = new NumberFormat("0.00"); // 用于Price Number的格式
WritableCellFormat priceFormat = new WritableCellFormat(detFont, pnf);
NumberFormat nf = new NumberFormat("0"); // 用于Number的格式
WritableCellFormat numberFormat = new WritableCellFormat(detFont, nf);
WritableFont stringFont =
new WritableFont(
WritableFont.ARIAL,
10,
WritableFont.NO_BOLD,
false,
UnderlineStyle.NO_UNDERLINE,
jxl.format.Colour.BLACK);
WritableCellFormat stringFormat = new WritableCellFormat(stringFont);
WritableCellFormat stringWrapFormat = new WritableCellFormat(stringFont);
stringWrapFormat.setWrap(true);
row = 1;
while (itTotals.hasNext()) {
Object obj = itTotals.next();
Map subTotals = obj instanceof Map ? (HashMap) obj : ObjectUtil.transform(obj);
Iterator itColumnName = columnList.iterator();
column = 0;
while (itColumnName.hasNext()) {
DownloadAttribute columnInfo = (DownloadAttribute) itColumnName.next();
String columnType = columnInfo.getExcelType();
String columnName = columnInfo.getRowName();
Object columnValue = subTotals.get(columnName);
if (columnValue == null) {
column++;
continue;
}
String strValue = null;
if (columnValue instanceof Date) {
strValue = DateTimeUtil.getFormatDateTime((Date) columnValue);
} else {
strValue = columnValue.toString();
}
// 设置内容
if (columnType.equals("Label")) {
if (columnValue.toString().indexOf("\r\n") > 0) {
ws.addCell(new Label(column, row, strValue, stringWrapFormat));
} else {
ws.addCell(new Label(column, row, strValue, stringFormat));
}
}
if (columnType.equals("Number"))
ws.addCell(
new jxl.write.Number(column, row, Double.parseDouble(strValue), numberFormat));
if (columnType.equals("Price"))
ws.addCell(
new jxl.write.Number(column, row, Double.parseDouble(strValue), priceFormat));
column++;
}
row++;
}
}
}