public StorageDataSet getDataSetBySuperVos(SuperVO[] vos, int digit, Class cls)
throws BusinessException {
int iRowCount = (vos == null) ? 0 : vos.length;
SuperVO vo = null;
if (iRowCount == 0) { // 查询数据为空，必须构造column
// System.out.println("DatasetUtil.getDatasetByCAVOs：行数为0");
try {
vo = (SuperVO) cls.newInstance();
} catch (Exception e) {
throw new BusinessException(e);
}
} else {
vo = vos[0];
cls = vo.getClass();
}
// 反射获得类属性信息
QEDataSet sds = new QEDataSet();
try {
String names[] = vo.getAttributeNames();
String realnames[] = null;
if (vo instanceof IVarNameDefine) {
realnames = ((IVarNameDefine) vo).getVaribleNames();
}
// 获得列数
int iColCount = (names == null) ? 0 : names.length;
Vector vecName = new Vector();
Vector vecCol = new Vector();
for (int i = 0; i < iColCount; i++) {
try {
// 创建列
Column col = new Column();
if (!CommonUtil.isNull(realnames) && !CommonUtil.isNull(realnames[i])) {
col.setCaption(realnames[i]);
col.setColumnName(names[i]);
// 记录
vecName.addElement(names[i]);
vecCol.addElement(col);
// 获得列类型
Field fld = null;
try {
fld = cls.getField(names[i]);
} catch (NoSuchFieldException e) {
throw new BusinessException(e);
}
int iType = class2VariantType(fld.getType());
/*
* int iType = Variant.STRING; Object obj =
* vos[0].getAttributeValue(names[i]); if (obj != null &&
* obj.getClass().getSuperclass() == Number.class) iType =
* Variant.DOUBLE;
*/
col.setDataType(iType);
}
} catch (Exception e) {
throw new BusinessException(e);
}
}
// 获得有效列数
iColCount = vecName.size();
if (iColCount == 0) {
// System.out.println("DatasetUtil.getDatasetByCAVOs：列数为0");
return null;
}
// 重构列名数组和列数组
names = new String[iColCount];
vecName.copyInto(names);
Column[] cols = new Column[iColCount];
vecCol.copyInto(cols);
// 转换
sds = new QEDataSet();
sds.setColumns(cols);
sds.open();
for (int i = 0; i < iRowCount; i++) {
// 构造数据行
DataRow row = new DataRow(sds);
for (int j = 0; j < iColCount; j++) {
Object obj = vos[i].getAttributeValue(names[j]);
String str = (obj == null) ? null : obj.toString();
int iColType = cols[j].getDataType();
// 填充数据行
DatasetUtil.makeDataRow(row, str, j, iColType);
row = row;
}
// 加行
sds.addRow(row);
}
sds.first();
} catch (Exception e) {
throw new BusinessException(e);
}
return sds;
}
