use of org.drools.core.time.impl.ExpressionIntervalTimer in project drools by kiegroup.
the class RuleBuilder method buildTimer.
public static Timer buildTimer(String timerString, RuleBuildContext context, Function<String, TimerExpression> exprCreator, Consumer<String> errorManager) {
if (timerString.indexOf('(') >= 0) {
timerString = timerString.substring(timerString.indexOf('(') + 1, timerString.lastIndexOf(')')).trim();
}
int colonPos = timerString.indexOf(":");
int semicolonPos = timerString.indexOf(";");
// default protocol
String protocol = "int";
if (colonPos == -1) {
if (timerString.startsWith("int") || timerString.startsWith("cron") || timerString.startsWith("expr")) {
errorManager.accept("Incorrect timer definition '" + timerString + "' - missing colon?");
return null;
}
} else {
protocol = timerString.substring(0, colonPos);
}
String startDate = extractParam(timerString, "start");
String endDate = extractParam(timerString, "end");
String repeatLimitString = extractParam(timerString, "repeat-limit");
int repeatLimit = repeatLimitString != null ? Integer.parseInt(repeatLimitString) : -1;
String body = timerString.substring(colonPos + 1, semicolonPos > 0 ? semicolonPos : timerString.length()).trim();
if ("cron".equals(protocol)) {
try {
return new CronTimer(exprCreator.apply(startDate), exprCreator.apply(endDate), repeatLimit, new CronExpression(body));
} catch (ParseException e) {
errorManager.accept("Unable to build set timer '" + timerString + "'");
return null;
}
}
if ("int".equals(protocol)) {
String[] times = body.trim().split("\\s");
long delay = 0;
long period = 0;
if (times.length > 2) {
errorManager.accept("Incorrect number of arguments for interval timer '" + timerString + "'");
return null;
}
try {
if (times.length == 1) {
// only defines a delay
delay = TimeUtils.parseTimeString(times[0]);
} else {
// defines a delay and a period for intervals
delay = TimeUtils.parseTimeString(times[0]);
period = TimeUtils.parseTimeString(times[1]);
}
} catch (RuntimeException e) {
errorManager.accept("Incorrect timer definition '" + timerString + "' " + e.getMessage());
return null;
}
return new IntervalTimer(exprCreator.apply(startDate), exprCreator.apply(endDate), repeatLimit, delay, period);
}
if ("expr".equals(protocol)) {
body = body.trim();
StringTokenizer tok = new StringTokenizer(body, ",;");
if (tok.countTokens() > 2) {
errorManager.accept("Incorrect number of arguments for expression timer '" + timerString + "'");
return null;
}
TimerExpression times = createTimerExpression(context, exprCreator, tok.nextToken().trim());
TimerExpression period = createTimerExpression(context, exprCreator, tok.hasMoreTokens() ? tok.nextToken().trim() : "0");
return new ExpressionIntervalTimer(exprCreator.apply(startDate), exprCreator.apply(endDate), repeatLimit, times, period);
}
errorManager.accept("Protocol for timer does not exist '" + timerString + "'");
return null;
}
use of org.drools.core.time.impl.ExpressionIntervalTimer in project drools by kiegroup.
the class RuleBuilder method buildTimer.
private static void buildTimer(RuleImpl rule, String timerString, RuleBuildContext context) {
if (timerString.indexOf('(') >= 0) {
timerString = timerString.substring(timerString.indexOf('(') + 1, timerString.lastIndexOf(')')).trim();
}
int colonPos = timerString.indexOf(":");
int semicolonPos = timerString.indexOf(";");
// default protocol
String protocol = "int";
if (colonPos == -1) {
if (timerString.startsWith("int") || timerString.startsWith("cron") || timerString.startsWith("expr")) {
DroolsError err = new RuleBuildError(rule, context.getParentDescr(), null, "Incorrect timer definition '" + timerString + "' - missing colon?");
context.addError(err);
return;
}
} else {
protocol = timerString.substring(0, colonPos);
}
String startDate = extractParam(timerString, "start");
String endDate = extractParam(timerString, "end");
String repeatLimitString = extractParam(timerString, "repeat-limit");
int repeatLimit = repeatLimitString != null ? Integer.parseInt(repeatLimitString) : -1;
String body = timerString.substring(colonPos + 1, semicolonPos > 0 ? semicolonPos : timerString.length()).trim();
Timer timer;
if ("cron".equals(protocol)) {
try {
timer = new CronTimer(createMVELExpr(startDate, context), createMVELExpr(endDate, context), repeatLimit, new CronExpression(body));
} catch (ParseException e) {
DroolsError err = new RuleBuildError(rule, context.getParentDescr(), null, "Unable to build set timer '" + timerString + "'");
context.addError(err);
return;
}
} else if ("int".equals(protocol)) {
String[] times = body.trim().split("\\s");
long delay = 0;
long period = 0;
if (times.length > 2) {
DroolsError err = new RuleBuildError(rule, context.getParentDescr(), null, "Incorrect number of arguments for interval timer '" + timerString + "'");
context.addError(err);
return;
}
try {
if (times.length == 1) {
// only defines a delay
delay = TimeUtils.parseTimeString(times[0]);
} else {
// defines a delay and a period for intervals
delay = TimeUtils.parseTimeString(times[0]);
period = TimeUtils.parseTimeString(times[1]);
}
} catch (RuntimeException e) {
DroolsError err = new RuleBuildError(rule, context.getParentDescr(), null, "Incorrect timer definition '" + timerString + "' " + e.getMessage());
context.addError(err);
return;
}
timer = new IntervalTimer(createMVELExpr(startDate, context), createMVELExpr(endDate, context), repeatLimit, delay, period);
} else if ("expr".equals(protocol)) {
body = body.trim();
StringTokenizer tok = new StringTokenizer(body, ",;");
if (tok.countTokens() > 2) {
DroolsError err = new RuleBuildError(rule, context.getParentDescr(), null, "Incorrect number of arguments for expression timer '" + timerString + "'");
context.addError(err);
return;
}
MVELObjectExpression times = MVELObjectExpressionBuilder.build(tok.nextToken().trim(), context);
MVELObjectExpression period = tok.hasMoreTokens() ? MVELObjectExpressionBuilder.build(tok.nextToken().trim(), context) : MVELObjectExpressionBuilder.build("0", context);
timer = new ExpressionIntervalTimer(createMVELExpr(startDate, context), createMVELExpr(endDate, context), repeatLimit, times, period);
} else {
DroolsError err = new RuleBuildError(rule, context.getParentDescr(), null, "Protocol for timer does not exist '" + timerString + "'");
context.addError(err);
return;
}
rule.setTimer(timer);
}
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