jQAssistant is a QA tool, which allows the definition and validation of project specific rules on a structural level. It is built upon the graph database Neo4j and can easily be plugged into the build process to automate detection of constraint violations and generate reports about user defined concepts and metrics.

Example use cases:

  • Enforce naming conventions, e.g. EJBs, JPA entities, test classes, packages, Maven modules etc.
  • Validate dependencies between modules of your project
  • Separate API and implementation packages
  • Detect common problems like cyclic dependencies or tests without assertions

Rules are expressed in Cypher - the easy-to-learn query language of Neo4j: 

MATCH
  (t:Test:Method)
WHERE NOT
  (t)-[:INVOKES]->(:Assert:Method)
RETURN
  t AS TestWithoutAssertion
Get started here!

News

  • jQAssistant Lunch – September 2021
    26. August 2021

    Only one week to go for the next lunch session: 02.09.2021, 12:00 (CEST)! This time our hands-on we will give an Introduction to Software Analytics using jQAssistant & Jupyter Notebooks. Interested? Please register here. PS: Here’s the recorded hands-on session about Getting started with jQA, Spring Boot, Maven and SonarQube (German language) from our August…

  • jQAssistant Plugin 1.10.0 for SonarQube Released
    5. August 2021

    We released an update of the jQAssistant plugin for SonarQube! It comes with the following changes: Upgraded API compatibility to SonarQube 8.9 LTS Recently SonarQube raised their LTS (Long Term Support) version from 7.9 to 8.9. As we’re following the LTS releases we upgrade the jQAssistant plugin to use the according APIs now. Configurable Issue…

  • jQAssistant Lunch – August 2021
    2. August 2021

    Our next lunch is right ahead – 05.08.2021, 12:00 (CEST)! Beside news and Q&A we will present a hands-on about Integrating jQAssistant into a Spring Boot application. If you want to join please register here. In case you missed our last lunch session, here are the recorded videos:

  • jQAssistant Context Mapper Integration Released
    9. Juli 2021

    We’re happy to announce a new plug-in for jQAssistant. From this time on, you can integrate jQAssistant with Context Mapper, which is a modeling framework for Strategic Domain-driven Design. The jqassistant-context-mapper-plugin allows you to scan existing Context Mapper models so that you can query Context Maps, Bounded Contexts, and relationships between Bounded Contexts. Furthermore, it…

  • jQAssistant 1.10.0 released
    1. Juli 2021

    jQAssistant 1.10.0 is available now and it comes with the following new features: Java Generics The Java scanner – after a long time – finally supports generic types, e.g. private List<FederationUploadKey> originalKeys; is represented in the graph by (field:Field)-[:OF_GENERIC_TYPE]->(parameterizedType:ParameterizedType), (parameterizedType)-[:OF_RAW_TYPE]->(fieldType:Type{fqn:"java.util.List"}), (parameterizedType)-[:HAS_ACTUAL_TYPE_ARGUMENT{index:0}]->(typeArgument), (typeArgument)-[:OF_RAW_TYPE]->(elementType:Type{fqn:"app.coronawarn.server.common.persistence.domain.FederationUploadKey"}) The graph model has been designed such that it stays as close as…

  • jQAssistant Lunch
    22. Juni 2021

    It’s lunch time! We’re setting up monthly live sessions (in German language) where we – the people behind jQAssistant – want to get in closer contact with you, our community. This is on our regular menu: News: What’s new in the jQAssistant universe? All about new releases, features, plugins, etc. from us and our community!…

  • jQAssistant 1.9.1 released
    1. April 2021

    jQAssistant 1.9.1 is now available and it comes with the following new features: Rules in YAML files Beside Asciidoc and XML files rules now may be written in YAML files as well: concepts: – id: java:Throwable description: Labels types deriving from java.lang.Throwable as "Throwable". source: | match (throwable)-[:EXTENDS*]->(t:Type) where t.fqn = 'java.lang.Throwable' SET throwable:Throwable return…

  • jQAssistant Double Features
    12. März 2021

    During the last three weeks there were two „jQAssistant Double Feature“ events at the Java User Group Switzerland (JUG CH) and the Software Architecture Meetup Nuremberg: Dirk Mahler started with a talk introducing the tool jQAssistant giving an overview about use cases and how it works. In the second talk Stephan Pirnbaum explained pragmatic and…

  • jQAssistant Plugin 1.9.0 for SonarQube Released
    26. Oktober 2020

    We have a new release of the jQAssistant plugin for SonarQube available now, it comes with two major changes: Filterable Ad-hoc Rules Until now all issues were created either as „Constraint Violation“ or „Failed Concept“ which made it impossible to search for concrete rules as specified in your XML or Asciidoc files. The plugin therefore…

  • jQAssistant Docker Plugin released
    26. September 2020

    A first release of the jQAssistant Docker plugin is now available! It allows scanning docker registries and making information about contained repositories, tags, manifests and layers available for exploration: Curious? Try it out, installation instructions and usage information are available on GitHub!

    • View All »

Case Study



Download our Case Study "Standardization and Automation at E-Post Development":

EN (PDF, 1 MB)
DEU (PDF, 1 MB)

Workshop/Talk Specials

jQAssistant Lunch
Check out the monthly Q&A session. Register for free at www.buschmais.de/termine/.
(Only in German)

Einführung in jQAssistant
Check out the new 3-day-workshop. The full agenda is available at www.buschmais.de/workshops/einfuehrung-in-jqassistant/.
(Only in German)

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Meet and Greet

You want to have a chat about Software Architecture and Quality Assurance?
Dirk, Stephan and Oliver will be attending the following events either as a visitor or as a speaker.
Feel free to contact them beforehand!

„jQAssistant Lunch“, Q&A session, every first Thursday of a month, Online

„Einführung in jQAssistant“, Workshop, 21 to 23 September 2021, Online

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