groimp-platform:xl-predicates
This is an old revision of the document!
Table of Contents
Query predicates
These predicates are used in the queries. Note that the description of the predicate is simplified. Please refer to the XL specification to see the complete definition.
All of the examples are part of patterns (on the left hand side in rule query, or in expression query (**) ).
Simple predicate
| syntax | description | example |
| ID ':.' | create a variable ID and assign it the default type of the graph (Node). | x:. |
| ID1 ':' ID2 | as before, but the variable ID1 is of type ID2 | x:X |
| ID'('param')' | create variables that matches the param given. Arguments can be skipped with either nothing or '.' | X(,a,,b,.) |
| '^' | push the expression that follow to the root of the current extent | ^X |
Path predicate
Control flow predicate
groimp-platform/xl-predicates.1736517208.txt.gz · Last modified: 2025/01/10 14:53 by gaetan