public EPStatementObjectModel compileEPL(String eplStatement) throws EPException {
StatementSpecRaw statementSpec =
EPAdministratorHelper.compileEPL(
eplStatement, eplStatement, true, null, services, defaultStreamSelector);
StatementSpecUnMapResult unmapped = StatementSpecMapper.unmap(statementSpec);
if (unmapped.getIndexedParams().size() != 0) {
throw new EPException(SUBS_PARAM_INVALID_USE);
}
return unmapped.getObjectModel();
}
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 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 EPPreparedStatement prepareEPL(String eplExpression) throws EPException {
// compile to specification
StatementSpecRaw statementSpec =
EPAdministratorHelper.compileEPL(
eplExpression, eplExpression, true, null, services, defaultStreamSelector);
// map to object model thus finding all substitution parameters and their indexes
StatementSpecUnMapResult unmapped = StatementSpecMapper.unmap(statementSpec);
// the prepared statement is the object model plus a list of substitution parameters
// map to specification will refuse any substitution parameters that are unfilled
return new EPPreparedStatementImpl(unmapped.getObjectModel(), unmapped.getIndexedParams());
}
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());
}
private EPStatement createEPLStmt(
String eplStatement, String statementName, Object userObject, String statementId)
throws EPException {
StatementSpecRaw statementSpec =
EPAdministratorHelper.compileEPL(
eplStatement, eplStatement, true, statementName, services, defaultStreamSelector);
EPStatement statement =
services
.getStatementLifecycleSvc()
.createAndStart(
statementSpec,
eplStatement,
false,
statementName,
userObject,
null,
statementId,
null);
log.debug(".createEPLStmt Statement created and started");
return statement;
}
public StatementSpecRaw compileEPLToRaw(String epl) {
return EPAdministratorHelper.compileEPL(epl, epl, true, null, services, defaultStreamSelector);
}