Dear All,
We are using a Cypher Query to fetch data from Neo4j 2.1.2 database:
MATCH (a)--(b)
WHERE a.profileId = '203'
OPTIONAL MATCH (a)--(b)--(c)
WHERE a.profileId = '203'
OPTIONAL MATCH (a)--(b)--(c)--(d)
WHERE a.profileId = '203'
RETURN distinct a,b,c,d limit 500
And we getting the correct wanted data as below:
a b c d {"profileId":"203"} {"profileId":"2490012091"}
{"profileId":"243942106"} {"profileId":"700910299"} {"profileId":"203"}
{"profileId":"2490012091"} {"profileId":"243942106"}
{"profileId":"19905698"} {"profileId":"203"} {"profileId":"2490012091"}
{"profileId":"243942106"} {"profileId":"283869724"} {"profileId":"203"}
{"profileId":"2490012091"} {"profileId":"243942106"}
{"profileId":"344029409"} {"profileId":"203"} {"profileId":"2490012091"}
{"profileId":"243942106"} {"profileId":"53596339"} {"profileId":"203"}
{"profileId":"2490012091"} {"profileId":"243942106"}
{"profileId":"395834378"}.....
Actually (a)--(b) are having 5 edge-node pairs, but the 1 of 5 pair 203 -
2490012091, are having too much sub-links. This is because Neo4j using
depth first searching by default.
In this case, the rest 4 of 5 (a)--(b) link pairs are invisible when we
limit returned result as 500.
I did not find any algorithm settings in the REST API (Manual Chapter 6.1
and 19.1)
Is it possible to switch the algorithm in Cypher Query (By web service REST
API)?
Regards,
Thank you
Yufan
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