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1. ElementWindow

   This window creates a new element based window. Parameter size: The size of the window, i.e. how many elements form a window advance: The advance after how many elements the window moves forward. Default advance is 1, i.e. with every new element slide: The slide of the window. When using this parameter all
   Odysseus • Jul 26, 2014

2. FrequencyCompare operator

   This operator compares the occurrence frequency of tuples (using the equal-method of the tuples) in two different windows. The first window (on port 0) has to be bigger or equal in size than the second window (on port 1). The relative occurrence frequency of the incoming tuple in the small and the big window
   Odysseus • Jul 20, 2015

3. Select syntax

   ]... The most different parts between usual SQL and CQL is the FROM part, because you have the possibility to definie windows. CQL defines them by squared brackets. There are 3 different windows you can define: an unbounded window, a time-based window and a tuple-based window. An unbounded window is defined by the keyword
   Odysseus • Jan 14, 2015

4. DeviationAnomalyDetection operator

   . fastGrouping Use hash code instead of tuple compare to create group. Potentially unsafe! windowChecking If true, it's checked if the last (tumbling) window had an anomaly. If two following windows have at least one anomaly per window, all non-anomaly tuples between the two anomalies will be send, too. AnomalyScore
   Odysseus • Jan 29, 2016

5. Development with Odysseus

   Remark: Under windows it is best to use a folder, that is not inside the user home path (because of long file names). A good option would be a base folder git
   Odysseus • Feb 06, 2024

6. TimeWindow

   This operator defines a window based on the time. Parameter size: The size of the window. Can be either a single number or a pair of a number and a time … SECONDS, NANOSECODS etc. - default time is milliseconds advance: The advance how the window moves forward. Can be either a single number or a pair of a number
   Odysseus • Mar 16, 2017

7. Join operator

   , because elements can earlier be discarded). ONE_ONE: In each input stream there is exactly one corresponding object. With this setting, windows can … Element Join Sometimes it is necessary to have an element window before a join, for example, to only use the latest element for each or from one of the two input
   Odysseus • Nov 28, 2019

8. TupleAggregate

   This operator can be used to select one element from a window of elements. Parameter method (String): The method that should be used for selection FIRST: The first element in the window LAST: The last element in the window MIN: The element with a minimal value MAX: The element with a maximal value attribute
   Odysseus • Jul 17, 2014

9. Continuous Query Language (CQL)

   the possibility to definie windows. CQL defines them by squared brackets. The following parameters are available for time based windows (TIME): SIZE: Defines the size of the window, e.g. 60 MINUTES ADVANCE: After what time will the window move The following parameters are available for element based windows (TUPLE
   Odysseus • Nov 25, 2021

10. TimeInterval

    to the starttimestamp an endtimestamp attribute data type can be used. The typical case however is the usage of windows, which reduce the validity of an event to a distinct portion of time. In opposite to many other systems, the denition of a window in Odysseus is not coupled to the operators that use these windows (e.g., a 15
    Odysseus • May 07, 2015