Lesson 3 Pattern Matching

Have a look at the Wiki pages of Gradoop - Query for further details about this operator.

Test Data Schema

All labels start with a lowercase letter in our dataset, so please use 'person' instead of 'Person' in your tasks.

Task 1 - Friendship Graph

• Find all persons that know "John Jones".

Solution

  "MATCH (p1:person)-[:knows]->(p2:person) WHERE p2.firstName=\"John\" AND p2.lastName=\"Jones\""

How many persons know him? Answer: 2

Task 2 - Locations

• Find all entities that are located in Bangkok

Solution

  "MATCH ()-[:isLocatedIn]->(c:city) WHERE c.name=\"Bangkok\""

Task 3 - Construct

• Find all Persons that are creators of Posts located in "Senegal"
• Posts should not be in the result set (use construct pattern)
• See the documentation about construct pattern here

Solution

    "MATCH (p:person)<-[:hasCreator]-(:post)-[:isLocatedIn]->(co:country) WHERE co.name=\"Senegal\"",
    "(p)-[e_new:isLocatedIn]->(co)"