Cypher Neo4J - CASE Expression with MERGE

Question

I\'m trying to implement the logic in Cypher where, based on a particular condition (CASE Statement), I would create some nodes and relationships; the code is

Answer 1

The APOC plugin supports Conditional Cypher Execution, which now allows us to avoid the FOREACH workaround.

For example, you can do this:

MATCH (g:Game)-[:PLAYER]->(u:User)-[r1:AT]->(b1:Block)-[:NEXT]->(b2:Block) 
WHERE g.game_id='G222' AND u.email_id = 'xyz@example.com' AND b1.block_id='16' 
SET r1.status='Skipped', r1.enddate=20141225
WITH u, b2, g
CALL apoc.do.when(
  b2.fork = 'y',
  "MERGE (u)-[:STAGE {startdate:20141225, enddate:'99999999', status:'InProgress'}]->(b2     {fork:'fail'})",
  "MERGE (u)-[:STAGE {startdate:20141225, enddate:'99999999', status:'InProgress'}]->(b2)",
  {u: u, b2: b2}) YIELD value
WITH u, g
MATCH (u)-[:TIME]->(h:Time)<-[:TIME]-(g)
SET h.after = 0
SET h.before = h.before + 1