HATP » hatponboard-lib

Some causal links are not kept during time projection.

See attached domain, and the result plan.

The answer given by HATP is:

{"HATP-REP": {"REQ-ID": 1, "REPORT": "OK", "NODES": [{"NODE": { "NODE-ID": 6, "NODE-TYPE": "metatask", "ACTION-NAME": "DoThings", "AGENTS": ["R1", "R2"], "START-TIME": 0, "END-TIME": 0, "PARAMETERS": [ "R1", "R2"]}}{"NODE": { "NODE-ID": 7, "NODE-TYPE": "action", "ACTION-NAME": "Thing", "AGENTS": ["R1"], "START-TIME": 0, "END-TIME": 8, "PARAMETERS": [ "R1"]}}{"NODE": { "NODE-ID": 8, "NODE-TYPE": "action", "ACTION-NAME": "Thing", "AGENTS": ["R2"], "START-TIME": 0, "END-TIME": 8, "PARAMETERS": [ "R2"]}}], "STREAMS": { "ROOTS": [7, 8], "LINKS": [] }, "TREE": { "ROOTS": [6], "LINKS": [{"LINK": { "TYPE": "causal", "FROM": 7, "TO": 8}}, {"LINK": { "TYPE": "hierarchical", "FROM": 6, "TO": 7}}, {"LINK": { "TYPE": "hierarchical", "FROM": 6, "TO": 8}}] } }}

We can see in this part that the causal link is present but is lost when streams are built:

{"LINK": { "TYPE": "causal", "FROM": 7, "TO": 8}}