Using neomodel for querying Neo4j database created with py2neo

[jrkarki]

Hi there community,

I am considering using neomodel to query a Neo4j database as cypher queries are no longer required. The neomodel documentation shows how to work on neomodel created node labels and fetch the associated attributes. For instance, people = Person.nodes.filter(age__gt=3). However, I have a different situation. I have a graph created with py2neo, however without a pre-defined nodes and relationships. I created nodes and relationships on the fly because I was not aware of all the node attributes in advance and the list kept growing.

Irrespective of these discrepancies, I assume that "class Person(StructuredNode)" is equivalent to the nodes I have in my graph. Assuming this, I want to able to retrieve node attributes just like the above example. My use case would be -> chem_info = Chemical.nodes.filter(Molecular Weight < 500) or retrieve the relationship where a certain protein is targeted by this chemical. How do I achieve this? How do I let neomodel know the available node labels from my graph?

I was able to connect to my database using neomodel and get couple of things done. See below:

from neomodel.scripts.neomodel_inspect_database import NodeInspector

NodeInspector.get_properties_for_label('Protein')

Output:
{'Name': 'STRING',
'GO cellular component': 'STRING',
'GO biological process': 'STRING',
'GO molecular function': 'STRING',
'Uniprot': 'STRING',
'Sequence': 'STRING'}**

This gives me a hint that things I want to do might be possible.

Please let me know or point me to the documentation where I can get counts of each labels or filter relationships based on user-defined constraints (of course without cypher queries).

Thanks in advance,
Reagon