Neo4j Extensions

Neo4j unmanaged extensions with regular Java API and Spring integration.

Build & Deploy

The default directory is:

<neo4j.home>${project.build.directory}/neo4j</neo4j.home>

This is a very useful default for a build server to access jars that need distributed remotely.

To have maven copy build artifacts to your local Neo4j instance, modify your local maven settings with the profiles provides here:

https://github.com/AtomRain/neo4j-extensions/blob/master/settings.xml

Update the path to point to your Neo4j home directory:

<neo4j.home>/PATH/TO/NEO4J_HOME</neo4j.home>

To build and deploy jar artifacts simply run:

mvn clean package

The process of building will automatically copy dependencies to ${neo4j.home}/system/lib.

REST Configuration

In neo4j-server.properties set:

dbms.unmanaged_extension_classes=org.neo4j.extensions.java=/extensions-java,org.neo4j.extensions.spring=/extensions-spring

Test Extension Endpoints

Check status of java endpoint:

curl -v -X GET http://localhost:7474/extensions-java/status

Create User with indexing off (default is on):

curl -v -X POST -H "Accept: application/json" http://localhost:7474/extensions-java/user/create?indexingOn=false

Check status of spring endpoint:

curl -v -X GET http://localhost:7474/extensions-spring/status

Create User with indexing off (default is on):

curl -v -X POST -H "Accept: application/json" http://localhost:7474/extensions-spring/user/create?indexingOn=false

Test Plugin Endpoints

First, find all the nodes in your database. If you haven't created any friend nodes you should. To find all the nodes (don't do this on large data sets):

curl -v -X POST http://localhost:7474/db/data/ext/GetAll/graphdb/get_all_nodes

Is important to use a POST method and NOT a GET. A GET will return details about the endpoint.

Second, find the shortest path between two nodes:

curl -v -X POST http://localhost:7474/db/data/ext/ShortestPath/node/{{sourceNodeId}}/shortestPath \
 -H "Accept: application/json" -H "Content-type: application/json" \
 -d '{"target":"http://localhost:7474/db/data/node/{{targetNodeId}}","depth":"1","types":["FRIEND_OF"]}'

Pay attention to the two variable in the URLs: sourceNodeId - start from this node targetNodeId - find the shortest path to this node types - default is FRIEND_OF (if you created friend nodes above this will work)