Neo4j: Complex filter for neighbourhood()

[lindajiawenli]

#1153

Currently:

We have one search function called neighbourhood( id ) that takes the id of an entity (ex. 'ncbigene:207') as a parameter and returns null if the entity does not exist in the database, otherwise it will return an object with two fields:

• list of all edges connected to that entity
• list all entities that are connected to that entity via one edge

Task:

Make a function like neighbourhood, except it has an extra parameter, includeComplexes. If includeComplexes is true, return as usual. Otherwise, do NOT include:

• edges that represent complexes
• neighbouring nodes that are only neighbours because they are apart of a complex
• interactions that would be returned because the node that is being searched is apart of a complex

[lindajiawenli]

Test Cases:

1. Complex with 2 nodes and nothing else. Result should be null
2. Complex with 3 nodes, 3 edges between them
3. Complex with 2 nodes, one interacting with one non-complex
4. Two complexes with 2 nodes each, individual nodes interacting with another node from a different complex
5. Complex interacting with a single non-complex. Result should be null
6. 2 complexes interacting with each other