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neo4jcypher

path traversal termination based on customized functions

I have a graph

  Y1 Y11     Y2 Y22
   \/         \/
   X1         X2
   |          |
A->B->..->C.->B->E

I want to find the path from A to E. However, whether this path is valid depends on the properties on Y1, Y2, and C. But I can check the properties of Y1, Y2, and C independently using some customized function.

I know using UDF with java is one way to achieve this, but if I am not using Java, what is the best way to achieve this? I guess I can still write a UDF in java and use query to call the UDF?

Solution

  • When you don't want to use java, there's also still apoc to create your own functions and procedures. See https://neo4j.com/labs/apoc/4.1/overview/apoc.custom/