本文整理汇总了Java中com.espertech.esper.client.soda.EPStatementObjectModel.toEPL方法的典型用法代码示例。如果您正苦于以下问题:Java EPStatementObjectModel.toEPL方法的具体用法?Java EPStatementObjectModel.toEPL怎么用?Java EPStatementObjectModel.toEPL使用的例子?那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类com.espertech.esper.client.soda.EPStatementObjectModel
的用法示例。
在下文中一共展示了EPStatementObjectModel.toEPL方法的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: run
import com.espertech.esper.client.soda.EPStatementObjectModel; //导入方法依赖的package包/类
public void run(EPServiceProvider epService) throws Exception {
epService.getEPAdministrator().getConfiguration().addImport(DefaultSupportCaptureOp.class.getPackage().getName() + ".*");
epService.getEPAdministrator().getConfiguration().addImport(MyObjectArrayGraphSource.class.getPackage().getName() + ".*");
String epl = "create dataflow VWAPSample\r\n" +
"create objectarray schema TradeQuoteType as (type string, ticker string, price double, volume long, askprice double, asksize long),\n" +
"MyObjectArrayGraphSource -> TradeQuoteStream<TradeQuoteType> {}\r\n" +
"Filter(TradeQuoteStream) -> TradeStream {\r\n" +
"filter: type=\"trade\"\r\n" +
"}\r\n" +
"Filter(TradeQuoteStream) -> QuoteStream {\r\n" +
"filter: type=\"quote\"\r\n" +
"}\r\n" +
"Select(TradeStream) -> VwapTrades {\r\n" +
"select: (select ticker, sum(price*volume)/sum(volume) as vwap, min(price) as minprice from TradeStream#groupwin(ticker)#length(4) group by ticker)\r\n" +
"}\r\n" +
"Select(VwapTrades as T, QuoteStream as Q) -> BargainIndex {\r\n" +
"select: " +
"(select case when vwap>askprice then asksize*(Math.exp(vwap-askprice)) else 0.0d end as index " +
"from T#unique(ticker) as t, Q#lastevent as q " +
"where t.ticker=q.ticker)\r\n" +
"}\r\n" +
"DefaultSupportCaptureOp(BargainIndex) {}\r\n";
EPStatement stmtGraph = epService.getEPAdministrator().createEPL(epl);
runAssertion(epService);
stmtGraph.destroy();
EPStatementObjectModel model = epService.getEPAdministrator().compileEPL(epl);
String text = model.toEPL(new EPStatementFormatter(true));
assertEquals(removeNewlines(epl), removeNewlines(text));
epService.getEPAdministrator().create(model);
runAssertion(epService);
}