public ExprNode compileExpression(String expression) throws EPException {
String toCompile = "select * from java.lang.Object.win:time(" + expression + ")";
StatementSpecRaw raw =
EPAdministratorHelper.compileEPL(
toCompile,
expression,
false,
null,
services,
SelectClauseStreamSelectorEnum.ISTREAM_ONLY);
return raw.getStreamSpecs().get(0).getViewSpecs().get(0).getObjectParameters().get(0);
}
public AnnotationPart compileAnnotationToSODA(String annotationExpression) {
String toCompile = annotationExpression + " select * from java.lang.Object";
StatementSpecRaw raw =
EPAdministratorHelper.compileEPL(
toCompile,
annotationExpression,
false,
null,
services,
SelectClauseStreamSelectorEnum.ISTREAM_ONLY);
return StatementSpecMapper.unmap(raw.getAnnotations().get(0));
}
public MatchRecognizeRegEx compileMatchRecognizePatternToSODA(
String matchRecogPatternExpression) {
String toCompile =
"select * from java.lang.Object match_recognize(measures a.b as c pattern ("
+ matchRecogPatternExpression
+ ") define A as true)";
StatementSpecRaw raw =
EPAdministratorHelper.compileEPL(
toCompile,
matchRecogPatternExpression,
false,
null,
services,
SelectClauseStreamSelectorEnum.ISTREAM_ONLY);
return StatementSpecMapper.unmap(raw.getMatchRecognizeSpec().getPattern());
}
public EvalFactoryNode compilePatternToNode(String pattern) throws EPException {
StatementSpecRaw raw =
EPAdministratorHelper.compilePattern(
pattern, pattern, false, services, SelectClauseStreamSelectorEnum.ISTREAM_ONLY);
return ((PatternStreamSpecRaw) raw.getStreamSpecs().get(0)).getEvalFactoryNode();
}