EsperProcessor: tabs to spaces
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@ -26,169 +26,168 @@ public class EsperProcessor implements TickProcessor {
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EPServiceProvider engine;
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public EsperProcessor(String epl) {
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// disable esper's internal clock. we use tick data for our
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// sense of time.
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Configuration config = new Configuration();
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config.getEngineDefaults().getThreading().setInternalTimerEnabled(false);
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config.addEventType(TickEvent.class);
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config.addEventType(LongEntryEvent.class);
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//config.addVariable("FOO", int.class, 12);
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public EsperProcessor(String epl) {
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// disable esper's internal clock. we use tick data for our
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// sense of time.
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Configuration config = new Configuration();
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config.getEngineDefaults().getThreading().setInternalTimerEnabled(false);
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config.addEventType(TickEvent.class);
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config.addEventType(LongEntryEvent.class);
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//config.addVariable("FOO", int.class, 12);
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config.addEventType("OHLCTick", OHLCTick.class);
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config.addEventType("OHLCValue", OHLCValue.class);
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config.addEventType("OHLCTick", OHLCTick.class);
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config.addEventType("OHLCValue", OHLCValue.class);
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config.addPlugInView("ATS", "OHLC", OHLCPlugInViewFactory.class.getName());
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engine = EPServiceProviderManager.getDefaultProvider(config);
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engine = EPServiceProviderManager.getDefaultProvider(config);
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addStatements(epl);
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addStatements(epl);
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addStatement("select * from TickEvent",
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(newData, oldData) -> {
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log.debug("Tick: {}", newData[0].getUnderlying());
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});
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addStatement("select * from TickEvent",
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(newData, oldData) -> {
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log.debug("Tick: {}", newData[0].getUnderlying());
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});
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addStatement("select * from OHLCStream",
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(newData, oldData) -> {
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log.debug("OLHC: {}", newData[0].getUnderlying());
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// DateTime t = (DateTime)newData[0].get("date");
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// double f = (double)newData[0].get("first");
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// double l = (double)newData[0].get("last");
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// double x = (double)newData[0].get("max");
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// double n = (double)newData[0].get("min");
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// log.info("OHLCValue: {} {} {} {}", f,l,x,n);
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});
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addStatement("select * from OHLCStream",
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(newData, oldData) -> {
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log.debug("OLHC: {}", newData[0].getUnderlying());
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// DateTime t = (DateTime)newData[0].get("date");
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// double f = (double)newData[0].get("first");
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// double l = (double)newData[0].get("last");
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// double x = (double)newData[0].get("max");
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// double n = (double)newData[0].get("min");
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// log.info("OHLCValue: {} {} {} {}", f,l,x,n);
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});
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// addStatement("select * from TickEvent#groupwin(instrument)#ohlcbarminute(timestamp, midDouble)",
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// new OHLCUpdateListener());
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// addStatement("select * from TickEvent#groupwin(instrument)#ohlcbarminute(timestamp, midDouble)",
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// new OHLCUpdateListener());
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// addStatement("select count(*) from TickEvent#time(4)",//"select * from TicksTimeWindow",
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// (newData, oldData) -> {
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// log.debug("TickTimeWindow: {}", (Object)newData);
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// });
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// addStatement("select count(*) from TickEvent#time(4)",//"select * from TicksTimeWindow",
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// (newData, oldData) -> {
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// log.debug("TickTimeWindow: {}", (Object)newData);
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// });
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// EPStatement statement = engine.getEPAdministrator().createEPL("select * from TickEvent");
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// EPStatement statement = engine.getEPAdministrator().createEPL("select * from TickEvent");
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// statement.addListener((newData, oldData) -> {
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// log.debug("event: {}", (Object)newData);
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// });
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// statement.addListener((newData, oldData) -> {
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// log.debug("event: {}", (Object)newData);
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// });
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// EPStatement statement = engine.getEPAdministrator().createEPL("select * from TickEvent");
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// EPStatement statement = engine.getEPAdministrator().createEPL("select * from TickEvent");
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// statement.addListener((newData, oldData) -> {
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// log.debug("event: {}", (Object)newData);
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// });
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// statement.addListener((newData, oldData) -> {
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// log.debug("event: {}", (Object)newData);
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// });
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// addStatement("select count(*) as count from TickEvent#time(4 sec)",
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// (newData, oldData) -> {
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// long count = (long)newData[0].get("count");
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// log.info("Tick Count: {}", count);
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// });
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// addStatement("select count(*) as count from TickEvent#time(4 sec)",
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// (newData, oldData) -> {
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// long count = (long)newData[0].get("count");
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// log.info("Tick Count: {}", count);
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// });
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}
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}
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/**
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* Split a (possibly) multiline string of EPL statements into one
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* statement per string. Statements are separated by at least one
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* blank line.
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*/
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private static String[] splitStatements(String str) {
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return str.split("(\\r?\\n){2,}");
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}
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/**
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* Split a (possibly) multiline string of EPL statements into one
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* statement per string. Statements are separated by at least one
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* blank line.
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*/
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private static String[] splitStatements(String str) {
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return str.split("(\\r?\\n){2,}");
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}
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/**
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* Split a string into individual lines.
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*/
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private static String[] splitLines(String str) {
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return str.split("\\r?\\n");
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}
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/**
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* Split a string into individual lines.
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*/
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private static String[] splitLines(String str) {
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return str.split("\\r?\\n");
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}
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/**
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* Return true if the given string is a comment.
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*/
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private static boolean isComment(String str) {
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return str.startsWith("//") || str.startsWith("--");
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}
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/**
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* Return true if the given string is a comment.
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*/
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private static boolean isComment(String str) {
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return str.startsWith("//") || str.startsWith("--");
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}
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/**
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* Return true if the given string is only whitespace.
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*/
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private static boolean isEmpty(String str) {
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return str.matches("^\\s*$");
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}
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/**
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* Return true if the given string is only whitespace.
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*/
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private static boolean isEmpty(String str) {
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return str.matches("^\\s*$");
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}
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/**
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* Remove comment lines from the string.
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*/
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private static String filterComments(String str) {
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return Arrays.stream(splitLines(str))
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.filter(s -> !isComment(s))
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.collect(Collectors.joining("\n"));
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}
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/**
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* Remove comment lines from the string.
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*/
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private static String filterComments(String str) {
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return Arrays.stream(splitLines(str))
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.filter(s -> !isComment(s))
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.collect(Collectors.joining("\n"));
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}
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/**
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* Given a string with (possibly) multiple statements, split and
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* add individually.
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*/
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private void addStatements(String epl) {
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for (String s : splitStatements(filterComments(epl))) {
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if (!isEmpty(s))
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addStatement(s);
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}
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}
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/**
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* Given a string with (possibly) multiple statements, split and
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* add individually.
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*/
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private void addStatements(String epl) {
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for (String s : splitStatements(filterComments(epl))) {
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if (!isEmpty(s))
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addStatement(s);
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}
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}
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/**
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* Add a single EPL statement to the Esper engine.
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*/
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private EPStatement addStatement(String epl) {
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return addStatement(epl, (UpdateListener)null);
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}
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/**
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* Add a single EPL statement to the Esper engine.
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*/
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private EPStatement addStatement(String epl) {
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return addStatement(epl, (UpdateListener)null);
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}
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/**
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* Add a single EPL statement to the Esper engine with a listener
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* to respond to the Statement.
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*/
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private EPStatement addStatement(String epl, UpdateListener listener) {
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// log.debug("Adding statement: {}", epl);
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/**
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* Add a single EPL statement to the Esper engine with a listener
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* to respond to the Statement.
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*/
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private EPStatement addStatement(String epl, UpdateListener listener) {
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// log.debug("Adding statement: {}", epl);
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EPStatement statement = engine.getEPAdministrator().createEPL(epl);
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EPStatement statement = engine.getEPAdministrator().createEPL(epl);
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if (listener != null) {
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statement.addListener(listener);
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}
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if (listener != null) {
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statement.addListener(listener);
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}
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return statement;
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}
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return statement;
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}
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/**
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* Add a single EPL statement to the Esper engine with a listener
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* to respond to the Statement.
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*/
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private EPStatement addStatement(String epl, StatementAwareUpdateListener listener) {
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// log.debug("Adding statement aware statement: {}", epl);
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/**
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* Add a single EPL statement to the Esper engine with a listener
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* to respond to the Statement.
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*/
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private EPStatement addStatement(String epl, StatementAwareUpdateListener listener) {
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// log.debug("Adding statement aware statement: {}", epl);
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EPStatement statement = engine.getEPAdministrator().createEPL(epl);
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EPStatement statement = engine.getEPAdministrator().createEPL(epl);
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if (listener != null) {
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statement.addListener(listener);
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}
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if (listener != null) {
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statement.addListener(listener);
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}
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return statement;
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}
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return statement;
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}
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/**
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* Send a single TickEvent to Esper.
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*/
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public void process(TickEvent tick) {
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process(new CurrentTimeEvent(tick.getTime().getMillis()));
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engine.getEPRuntime().sendEvent(tick);
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}
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/**
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* Send a single TickEvent to Esper.
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*/
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public void process(TickEvent tick) {
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process(new CurrentTimeEvent(tick.getTime().getMillis()));
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engine.getEPRuntime().sendEvent(tick);
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}
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/**
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* Update Esper's internal clock.
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*/
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public void process(CurrentTimeEvent timeEvent) {
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engine.getEPRuntime().sendEvent(timeEvent);
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}
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/**
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* Update Esper's internal clock.
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*/
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public void process(CurrentTimeEvent timeEvent) {
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engine.getEPRuntime().sendEvent(timeEvent);
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}
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}
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