deep dive on fulltext indexing with Neo4j

In a previous blog post I’ve explained the differences of the different types of indexes being available in Neo4j. A common requirement for a lot of projects is the usage of fulltext indexes. With current versions of Neo4j (2.1.5 as of now) this can only be accomplished with the usage of manual indexes. In this […]

getting insight in Neo4j’s JMX beans when running embedded

Neo4j exposes a lot of valuable information via JMX. Sometimes you want to gain some insight in some JMX beans when running Neo4j in embedded mode. For this it’s crucial to have the neo4j-jmx-[version].jar file on the classpath. The following short Groovy script demos this by using the @Grab annotation to fetch dependencies: For a […]

quick tooling tip for hacking Cypher statements – Linux only

When developing Cypher statements for a Neo4j based application there are multiple ways to do this. A lot of people (including myself) love the new Neo4j browser shipped with 2.0 and subsequent releases. This is a nicely built locally running web application running in your browser. At the top users can easily type their Cypher […]

using remote shell combined with Neo4j embedded

Neo4j can be deployed in multiple ways. Either you can run it as a server in a separate process, just like a classic database, or you can use embedded mode where your application controls the lifecycle of the graph database. Both, embedded and server mode can be used to setup a HA scenario with Neo4j […]

running Neo4j graphgists locally with docker.io

Neo4j has a excellent tool for documenting graph models called graphgists. As the name suggests graphgists are typically stored as github gists in asciidoc format. Additionally to the regular asciidoc you can embed executable cypher and a Neo4j console in a graphgist. For most people it’s perfectly fine hosting their graphgists at github or dropbox. […]

for your convenience: command line cypher the comfortable way with httpie

Today a tweet from @rafacm drove my attention to httpie, a cURL tool for humans. Using cURL is cumbersome and noisy, httpie makes it fairly easily usable. install httpie Httpie is python based therefore it’s trivial to install using easy_install/pip. On my Ubuntu 13.10 box I’ve used:

It fetches the package and installs it locally. […]

some experiments with ratpack and neo4j

Back in May this year I’ve attended the Gr8conf in Copenhagen. As always this conference added couple of things to my personal “take-a-look-at-this” list. The most exciting thingy for me was ratpack, a lean toolkit for building web applications on the JVM. Ratpack is powered by Netty and provides an event driven network engine as […]

nice addition back in Neo4j 1.9.1: closeable ExecutionResult

When using Cypher from Java code one instantiates a ExecutionEngine and calls execute to get a instance of ExecutionResult. ExecutionResult is an Iterable and therefore provides access to an iterator() method. Up to Neo4j 1.9 it is recommended to fully consume the iterator until hasNext() returns null, otherwise it’s not guaranteed that all resources are […]

assigning UUIDs to Neo4j nodes and relationships

TL;DR: This blog post features a small demo project on github: neo4j-uuid and explains how to automatically assign UUIDs to nodes and relationships in Neo4j. A very brief introduction into Neo4j 1.9’s KernelExtensionFactory is included as well. a little rant on Neo4j node/relationship ids In a lot of use cases there is demand for storing a […]