A collection of domain services for Apache Isis providing access to an Isis application's metamodel, in support of various developer tasks.
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This module, intended for use with Apache Isis, provides a number of development-time utilities, mostly related to accessing/interacting with the Isis metamodel. These are visible in the UI either as menu actions or as contributed actions.


The following screenshots show an example app's usage of the module with some sample fixture data:

Downloading a single .layout.json file

The module contributes the download layouts action:

... which downloads a JSON file:

... that contains a .layout.json corresponding to the current Isis metamodel (as specified by any annotations etc).

The developer can copy the JSON file into the correct location (alongside the .java class file) and update as required. The JSON files takes precedence over any annotations.

Downloading all .layout.json file

If there are many (or all) entities that require a .layout.json file, then a zip of all the layouts can be downloaded:

Downloading the metamodel as a CSV

To support code reviews and adhoc analysis of the code base, the metamodel can be downloaded as a CSV file:

... which can then be opened in a spreadsheet or other tool:

How to run the Demo App

The prerequisite software is:

  • Java JDK 8 (>= 1.9.0) or Java JDK 7 (<= 1.8.0) ** note that the compile source and target remains at JDK 7
  • maven 3 (3.2.x is recommended).

To build the demo app:

git clone https://github.com/isisaddons/isis-module-devutils.git
mvn clean install

To run the demo app:

mvn antrun:run -P self-host

Then log on using user: sven, password: pass

Relationship to Apache Isis Core

Isis Core 1.6.0 included the org.apache.isis.module:isis-module-devutils:1.6.0 Maven artifact. This module is a direct copy of that code, with the following changes:

  • package names have been altered from org.apache.isis to org.isisaddons.module.devutils
  • for simplicity, the applib and impl submodules have been combined into a single module
  • the DeveloperUtilitiesServiceDefault is now annotated with @DomainService so does not need explicitly registering in isis.properties.

Otherwise the functionality is identical; warts and all!

Isis 1.7.0 no longer ships with org.apache.isis.module:isis-module-devutils; use this addon module instead.

How to configure/use

You can either use this module "out-of-the-box", or you can fork this repo and extend to your own requirements.


To use "out-of-the-box":

  • update your classpath by adding this dependency in your dom project's pom.xml:
  • if using AppManifest, then update its getModules() method:

    @Override public List> getModules() { return Arrays.asList( ... org.isisaddons.module.devutils.DevUtilsModule.class, ); }

  • otherwise, update your WEB-INF/isis.properties.


"Out-of-the-box" (-SNAPSHOT)

If you want to use the current -SNAPSHOT, then the steps are the same as above, except:

  • when updating the classpath, specify the appropriate -SNAPSHOT version:
  • add the repository definition to pick up the most recent snapshot (we use the Cloudbees continuous integration service). We suggest defining the repository in a <profile>:

Forking the repo

If instead you want to extend this module's functionality, then we recommend that you fork this repo. The repo is structured as follows:

  • pom.xml - parent pom
  • dom - the module implementation, depends on Isis applib
  • fixture - fixtures, holding a sample domain objects and fixture scripts; depends on dom
  • integtests - integration tests for the module; depends on fixture
  • webapp - demo webapp (see above screenshots); depends on dom and fixture

Only the dom project is released to Check for versions available in the Maven Central Repo. The versions of the other modules are purposely left at 0.0.1-SNAPSHOT because they are not intended to be released.

Related Modules/Services

The Isis Addons Security Module also exposes aspects of the Isis metamodel (in its ApplicationFeatures service and ApplicationFeature class). In the future this functionality within the security module may move into this devutils module.

Change Log

  • (no release in Isis 1.13.0; the module's functionality now part of the Apache Isis framework)
  • 1.12.0 - released against Isis 1.12.0
  • 1.11.0 - released against Isis 1.11.0
  • 1.10.0 - released against Isis 1.10.0
  • 1.9.0 - released against Isis 1.9.0
  • 1.8.0 - released against Isis 1.8.0, support new @XxxLayout annotations; domain events for actions.
  • 1.7.0 - released against Isis 1.7.0
  • 1.6.1 - closes issue#1.
  • 1.6.0 - re-released as part of isisaddons, with classes under package org.isisaddons.module.devutils

Legal Stuff


Copyright 2014-2016 Dan Haywood

Licensed under the Apache License, Version 2.0 (the
"License"); you may not use this file except in compliance
with the License.  You may obtain a copy of the License at


Unless required by applicable law or agreed to in writing,
software distributed under the License is distributed on an
KIND, either express or implied.  See the License for the
specific language governing permissions and limitations
under the License.


There are no third-party dependencies.

Maven deploy notes

Only the dom module is deployed, and is done so using Sonatype's OSS support (see user guide).

Release to Sonatype's Snapshot Repo

To deploy a snapshot, use:

pushd dom
mvn clean deploy

The artifacts should be available in Sonatype's Snapshot Repo.

Release to Maven Central

The release.sh script automates the release process. It performs the following:

  • performs a sanity check (mvn clean install -o) that everything builds ok
  • bumps the pom.xml to a specified release version, and tag
  • performs a double check (mvn clean install -o) that everything still builds ok
  • releases the code using mvn clean deploy
  • bumps the pom.xml to a specified release version

For example:

sh release.sh 1.13.0 \
              1.14.0-SNAPSHOT \
              dan@haywood-associates.co.uk \
              "this is not really my passphrase"


  • $1 is the release version
  • $2 is the snapshot version
  • $3 is the email of the secret key (~/.gnupg/secring.gpg) to use for signing
  • $4 is the corresponding passphrase for that secret key.

Other ways of specifying the key and passphrase are available, see the pgp-maven-plugin's documentation).

If the script completes successfully, then push changes:

git push origin master
git push origin 1.13.0

If the script fails to complete, then identify the cause, perform a git reset --hard to start over and fix the issue before trying again. Note that in the dom's pom.xml the nexus-staging-maven-plugin has the autoReleaseAfterClose setting set to true (to automatically stage, close and the release the repo). You may want to set this to false if debugging an issue.

According to Sonatype's guide, it takes about 10 minutes to sync, but up to 2 hours to update search.