在交易中应用 OLAP(第 2 部分)：可视化交互式多维数据分析的结果·综合运用

Selectors: class="num">1
SumAggregator<TRADE_RECORD_FIELDS> FIELD_PROFIT_AMOUNT [class="num">6]
X: QuantizationSelector(FIELD_LOT) [class="num">6]
===== QuantizationSelector(FIELD_LOT) =====
[value] [title]
[class="num">0] class="num">365.96000 "class="num">0.01"
[class="num">1]   class="num">0.00000 "class="num">0.0"
[class="num">2]   class="num">4.65000 "class="num">0.03"
[class="num">3]  class="num">15.98000 "class="num">0.06"
[class="num">4]  class="num">34.23000 "class="num">0.02"
[class="num">5]   class="num">0.00000 "class="num">1.0"
class OLAPWrapper
{
class="kw">protected:
Selector<TRADE_RECORD_FIELDS> *createSelector(class="kw">const SELECTORS selector, class="kw">const TRADE_RECORD_FIELDS field);
class="kw">public:
class="type">void process(
class="kw">const SELECTORS &selectorArray[], class="kw">const TRADE_RECORD_FIELDS &selectorField[],
class="kw">const AGGREGATORS AggregatorType, class="kw">const TRADE_RECORD_FIELDS AggregatorField, Display &display,
class="kw">const SORT_BY SortBy = SORT_BY_NONE,
class="kw">const class="type">class="kw">double Filter1value1 = class="num">0, class="kw">const class="type">class="kw">double Filter1value2 = class="num">0)
{
class="type">int selectorCount = class="num">0;
for(class="type">int i = class="num">0; i < MathMin(ArraySize(selectorArray), class="num">3); i++)
{
selectorCount += selectorArray[i] != SELECTOR_NONE;
}
...
HistoryDataAdapter<CustomTradeRecord> history;
HTMLReportAdapter<CustomTradeRecord> report;
CSVReportAdapter<CustomTradeRecord> external;
DataAdapter *adapter = &history;
if(ReportFile != "")
{
if(StringFind(ReportFile, ".htm") > class="num">0 && report.load(ReportFile))
{
adapter = &report;
}
else
if(StringFind(ReportFile, ".csv") > class="num">0 && external.load(ReportFile))
{
adapter = &external;
}
else
{
Alert("未知的文件格式: ", ReportFile);
class="kw">return;
}
}
else
{

class="type">void OLAPDialog::OnClickButton(class="type">void)
{
  SELECTORS Selectors[class="num">4];
  TRADE_RECORD_FIELDS Fields[class="num">4];
  AGGREGATORS at = (AGGREGATORS)m_algo[class="num">0].Value();
  TRADE_RECORD_FIELDS af = (TRADE_RECORD_FIELDS)(AGGREGATORS)m_algo[class="num">1].Value();
  SORT_BY sb = (SORT_BY)m_algo[class="num">2].Value();
  ArrayInitialize(Selectors, SELECTOR_NONE);
  ArrayInitialize(Fields, FIELD_NONE);
  ...
  olapcore.process(Selectors, Fields, at, af, olapdisplay, sb);
}

if(selectorCount == class="num">1)
{
  PairArray *result;
  if(metaData.getVector(class="num">0, consts, result, sortby))
  {
    Print("===== " + metaData.getDimensionTitle(class="num">0) + " =====");
    ArrayPrint(result.array);
    parent.accept1D(result, metaData.getDimensionTitle(class="num">0));
  }
  parent.finalize();
  class="kw">return;
}