This is a Neo4j Server plugin, providing Gremlin backend scripting to the Neo4j Server. To deploy, please do the following

For usage, see the current documentation.

Building from source and deploying into Neo4j Server

mvn clean package
unzip target/neo4j-gremlin-plugin-2.0-SNAPSHOT-server-plugin.zip -d $NEO4J_HOME/plugins/gremlin-plugin
cd $NEO4J_HOME
bin/neo4j restart

Maven setup

In your pom.xml, add

<repositories>
    <repository>
        <id>neo4j-contrib-snapshots</id>
        <url>https://github.com/neo4j-contrib/m2/raw/master/snapshots/url>
        <snapshots>
            <enabled>true</enabled>
        </snapshots>
    </repository>
</repositories>

and

<dependency>
     <groupId>org.neo4j.server.plugin</groupId>
     <artifactId>neo4j-gremlin-plugin</artifactId>
     <version>2.0-SNAPSHOT</version>
     <type>test-jar</type>
     <scope>test</scope>
</dependency>

Eclipse setup

• Install m2eclipse maven support for Eclipse from the update site http://download.eclipse.org/technology/m2e/releases
• clone this repo
• do Eclipse->Import...->Maven->Existing_projects_into_workspace and point out your cloned code directory
• wait until the process is finished and you should have a compiling setup in Eclipse.

access the plugin

curl localhost:7474/db/data/
{
"relationship_index" : "http://localhost:7474/db/data/index/relationship",
"node" : "http://localhost:7474/db/data/node",
"relationship_types" : "http://localhost:7474/db/data/relationship/types",
"extensions_info" : "http://localhost:7474/db/data/ext",
"node_index" : "http://localhost:7474/db/data/index/node",
"reference_node" : "http://localhost:7474/db/data/node/0",
"extensions" : {
  "GremlinPlugin" : {
    "execute_script" : "http://localhost:7474/db/data/ext/GremlinPlugin/graphdb/execute_script"
  }
}

submit (HTTP POST) a Gremlin script i=g.V(2);i.outE.inV returning a list of nodes, URL encoded:

curl -d "script=i+%3D+g.v%282%29%3Bi.outE.inV" http://localhost:7474/db/data/ext/GremlinPlugin/graphdb/execute_script
[ {
  "outgoing_relationships" : "http://localhost:7474/db/data/node/0/relationships/out",
  "data" : {
  },
  "traverse" : "http://localhost:7474/db/data/node/0/traverse/{returnType}",
  "all_typed_relationships" : "http://localhost:7474/db/data/node/0/relationships/all/{-list|&|types}",
  "property" : "http://localhost:7474/db/data/node/0/properties/{key}",
  "self" : "http://localhost:7474/db/data/node/0",
  "properties" : "http://localhost:7474/db/data/node/0/properties",
  "outgoing_typed_relationships" : "http://localhost:7474/db/data/node/0/relationships/out/{-list|&|types}",
  "incoming_relationships" : "http://localhost:7474/db/data/node/0/relationships/in",
  "extensions" : {
  },
  "create_relationship" : "http://localhost:7474/db/data/node/0/relationships",
  "all_relationships" : "http://localhost:7474/db/data/node/0/relationships/all",
  "incoming_typed_relationships" : "http://localhost:7474/db/data/node/0/relationships/in/{-list|&|types}"
} ]