gryaml

Represent Neo4j graph data as YAML.

Features

• Creates nodes and relationships in a Neo4j graph database from YAML using PyYAML-specific tags.
• Operates at a whole-file level, as it uses custom YAML tags to deserialize the data to live objects.
• Developed for loading data for integration testing.
• Requires a running Neo4j instance and instantiates actual database entities, rather than just generating abstract/unbound :class:`py2neo.Node` and :class:`py2neo.Relationship` objects. This is due to :mod:`py2neo` version 1.6 not supporting node labels with abstract nodes. This might be changed if we are able to migrate off of 1.6 in the near future.

Versions

Python

Tested with both Python 2.7 and 3.5.

Neo4j

Should work with anything >= 2.0 but < 3. Tested with 2.3.2. Running the tests requires 2.3 as it uses the DETACH DELETE feature to drop the database.

:mod:`py2neo`

Currently only supports 2.0. Expecting to do 3; dreading 1.6.

:mod:`pyyaml`

Only tested with PyYAML v3.11, the last release since 2014.

Testing

Running the tests requires an installed, running Neo4j instance. Pass the URL through the environment variable NEO4J_URI.

Future

• Custom YAML representer & constructor. Currently it is not possible to automatically dump Node and Relationship objects in a reasonable fashion.
• py2neo & Neo4j v3 support.
• Documentation, etc.