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danhaywood pushed a commit to branch CAUSEWAY-3866
in repository https://gitbox.apache.org/repos/asf/causeway.git

commit 2c403d5f71bdfdfbe4fa3122e1b20971ef1db25e
Author: Dan Haywood <[email protected]>
AuthorDate: Fri Oct 17 12:19:09 2025 +0100

    CAUSEWAY-3866: removes more jdo references
---
 .../ROOT/partials/module-nav/components.adoc       |   2 -
 .../modules/intellij/attachments/.gitignore        |   1 -
 .../causeway-settings-file-templates.jar           | Bin 10702 -> 0 bytes
 .../setupguide/modules/intellij/pages/about.adoc   |  64 +-------------------
 .../modules/intellij/partials/coding-standards.txt |  12 ----
 .../intellij/partials/faster-turnaround-times.txt  |  67 +--------------------
 .../modules/intellij/partials/file-templates.txt   |  40 ------------
 .../modules/intellij/partials/live-templates.txt   |  22 -------
 .../userguide/modules/ROOT/pages/value-types.adoc  |  32 ++--------
 antora/playbooks/site.NEXT.yml                     |   2 +-
 .../adoc/modules/runtimeservices/pages/about.adoc  |   2 +-
 .../adoc/modules/commandlog/pages/about.adoc       |  17 ++----
 .../adoc/modules/executionlog/pages/about.adoc     |  17 ++----
 .../adoc/modules/executionoutbox/pages/about.adoc  |  18 ++----
 .../adoc/modules/audittrail/pages/about.adoc       |  13 +---
 .../adoc/modules/secman/pages/setting-up.adoc      |  18 ++----
 .../adoc/modules/sessionlog/pages/about.adoc       |  13 +---
 .../adoc/modules/ROOT/pages/hints-and-tips.adoc    |   1 -
 .../jpa/adoc/modules/ROOT/partials/module-nav.adoc |   2 +-
 .../querydsl/adoc/modules/ROOT/pages/about.adoc    |   5 +-
 .../ROOT/pages/setup-and-configuration.adoc        |  11 ----
 security/adoc/modules/ROOT/pages/about.adoc        |   2 +-
 .../adoc/modules/archtestsupport/pages/about.adoc  |  22 +------
 .../adoc/modules/asciidoc/pages/about.adoc         |  10 ++-
 .../adoc/modules/markdown/pages/about.adoc         |  11 ++--
 valuetypes/vega/adoc/modules/vega/pages/about.adoc |  10 ++-
 26 files changed, 53 insertions(+), 361 deletions(-)

diff --git 
a/antora/components/docs/modules/ROOT/partials/module-nav/components.adoc 
b/antora/components/docs/modules/ROOT/partials/module-nav/components.adoc
index 4e75c1f7d06..0dc6dbdd128 100644
--- a/antora/components/docs/modules/ROOT/partials/module-nav/components.adoc
+++ b/antora/components/docs/modules/ROOT/partials/module-nav/components.adoc
@@ -7,7 +7,6 @@
 
 *** xref:security:bypass:about.adoc[Bypass]
 *** xref:security:simple:about.adoc[Simple]
-*** xref:security:shiro:about.adoc[Shiro]
 *** xref:security:spring:about.adoc[Spring]
 *** xref:security:keycloak:about.adoc[Keycloak]
 
@@ -20,5 +19,4 @@
 ** Persistence
 
 *** xref:pjpa:ROOT:about.adoc[]
-*** xref:pjdo:ROOT:about.adoc[]
 
diff --git 
a/antora/components/setupguide/modules/intellij/attachments/.gitignore 
b/antora/components/setupguide/modules/intellij/attachments/.gitignore
deleted file mode 100644
index 1a8fd13e007..00000000000
--- a/antora/components/setupguide/modules/intellij/attachments/.gitignore
+++ /dev/null
@@ -1 +0,0 @@
-!causeway-settings-file-templates.jar
diff --git 
a/antora/components/setupguide/modules/intellij/attachments/causeway-settings-file-templates.jar
 
b/antora/components/setupguide/modules/intellij/attachments/causeway-settings-file-templates.jar
deleted file mode 100644
index c64ef96a17b..00000000000
Binary files 
a/antora/components/setupguide/modules/intellij/attachments/causeway-settings-file-templates.jar
 and /dev/null differ
diff --git a/antora/components/setupguide/modules/intellij/pages/about.adoc 
b/antora/components/setupguide/modules/intellij/pages/about.adoc
index 2beb8d211ec..9769ca9558a 100644
--- a/antora/components/setupguide/modules/intellij/pages/about.adoc
+++ b/antora/components/setupguide/modules/intellij/pages/about.adoc
@@ -45,10 +45,6 @@ 
image::015-import-project/040-project-structure.png[width="800px"]
 
 == Configuring
 
-//include::partial$UNUSED/file-templates.adoc[leveloffset=+2]
-//include::partial$UNUSED/live-templates.adoc[leveloffset=+2]
-//include::partial$UNUSED/coding-standards.adoc[leveloffset=+2]
-
 === Compiler Settings
 
 There are a number of compiler settings that influence the compiler.
@@ -124,8 +120,7 @@ The screenshot below shows a run configuration for JPA:
 
 image::110-running-the-app/012-run-configuration-jpa.png[width=1000]
 
-
-With JPA, the classes need to be "weaved" in order to support lazy loading and 
(more performant) dirty object tracking.
+With xref:pjpa:ROOT:about.adoc[JPA/Eclipselink], the classes can optionally be 
"weaved" in order to support lazy loading and (more performant) dirty object 
tracking.
 This is typically done dynamically at runtime, using a Java agent.
 The xref:docs:starters:simpleapp.adoc[SimpleApp] and 
xref:docs:starters:helloworld.adoc[HelloWorld] starter apps demonstrate this, 
bundling the `spring-instrument.jar` file.
 To run, use:
@@ -138,54 +133,6 @@ To run, use:
 as a JVM argument (where the system properties also are located.)
 
 
-=== Running the App (JDO)
-
-DataNucleus requires that all entities are bytecode enhanced.
-When building from the command line using Maven, the `datanucleus:enhance` 
Maven plugin takes care of this.
-
-We can just have IntelliJ run the enhance as a separate run configuration 
before the run configuration that runs the app itself.
-
-First, set up the run configuration to do the enhance:
-
-.Run Configuration to enhance the entities
-image::110-running-the-app/005-datanucleus-enhance-run-configuration.png[width="700px"]
-
-TIP: Check "work offline" (in Maven Options) to speed this up slightly.
-
-[WARNING]
-====
-If on Windows you encounter "The command line is too long", then set 
'-Dfork=false' as a VM option, in Java options:
-
-image::110-running-the-app/006-datanucleus-enhance-run-configuration-fork-false.png[width="400px"]
-====
-
-Then, set up the run configuration for the app:
-
-.Run Configuration to run the app
-image::110-running-the-app/010-run-configuration.png[width="700px"]
-
-Note how it runs the "enhance" configuration first, specified using "Modify 
options".
-
-Because we are using Maven to enhance the app, build the app at least once 
from the Maven command line:
-
-[source,bash]
-----
-mvn install -DskipTests -T1C
-----
-
-You should now be able to run the app using `Run > Run Configuration`.
-The same configuration can also be used to debug the app if you so need.
-
-
-.Dynamic Enhancement ?
-[sidebar]
-****
-Rather than statically enhancing the classes, an alternative -- at least in 
theory -- is to enhance the classes dynamically, at runtime.
-
-There is an 
link:https://plugins.jetbrains.com/plugin/11119-datanucleus-runtime-enhancement[IntelliJ
 plugin] (not tested) that purports to support this, but (at time of writing) 
is out of date and only supports older versions of IntelliJ.
-****
-
-
 === Running the Unit Tests
 
 The easiest way to run the unit tests is just to right click on the relevant 
package in the _Project Window_, and choose run unit tests.
@@ -209,13 +156,4 @@ There are also tests in the `webapp-tests` module:
 
 image::110-running-the-app/046-running-integ-tests-webapp-tests.png[width=800]
 
-If the app uses JDO, then the tests might fail because the entities won't have 
been enhanced.
-However, we can then easily update the automatically-created run configuration 
to run the datanucleus enhancer goal (same as when running the application):
-
-.Integration Tests Run Configuration
-image::110-running-the-app/050-running-integration-tests-run-configuration.png[width="700px"]
-
-// CAUTION: Make sure that the `search for tests` radio button is set to `In 
single module`.
-// If this radio button is set to one of the other options then you may obtain 
class loading issues.
-
 
diff --git 
a/antora/components/setupguide/modules/intellij/partials/coding-standards.txt 
b/antora/components/setupguide/modules/intellij/partials/coding-standards.txt
deleted file mode 100644
index 30f870016aa..00000000000
--- 
a/antora/components/setupguide/modules/intellij/partials/coding-standards.txt
+++ /dev/null
@@ -1,12 +0,0 @@
-= Coding Standards
-
-:Notice: Licensed to the Apache Software Foundation (ASF) under one or more 
contributor license agreements. See the NOTICE file distributed with this work 
for additional information regarding copyright ownership. The ASF licenses this 
file to you 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. http://www.apache.org/licenses/LICENSE-2.0 . Unless required by 
applicable law or ag [...]
-
-// LATER
-
-CAUTION: seem to have mislaid this file... would need verifying/updating 
anyway, I think.
-
-Next, we suggest you import settings for standard ASF/Apache Causeway coding 
conventions.
-This file is also provided as a settings file, namely 
*link:{attachmentsdir}/intellij/causeway-settings-code-style.jar[causeway-settings-code-style.jar]*.
-Download and import (as for the above settings JAR files).
-
diff --git 
a/antora/components/setupguide/modules/intellij/partials/faster-turnaround-times.txt
 
b/antora/components/setupguide/modules/intellij/partials/faster-turnaround-times.txt
index 48c9827e82c..4f8ca1ab743 100644
--- 
a/antora/components/setupguide/modules/intellij/partials/faster-turnaround-times.txt
+++ 
b/antora/components/setupguide/modules/intellij/partials/faster-turnaround-times.txt
@@ -9,71 +9,10 @@ This section describes how to install and setup JetBrains' 
IntelliJ IDEA, then h
 
 In this section are several options that will reduce the time it takes between 
making a source code edit and seeing the results in the running app. 
code/build/deploy/review feedback loop.
 
-== Using Grade to compile/enhance
-
-Running an Apache Causeway application requires that the DataNucleus enhancer 
runs on the compiled bytecode.
-As described xref:setupguide:intellij:about.adoc#running-the-app[above], the 
recommended way to do this with IntelliJ is to use a Run configuration that 
runs the enhancer goal prior to launch.
-
-Alternative, you can use the following `build.gradle` script in your `dom` 
module:
-
-[source,groovy]
-.`build.gradle`
-----
-apply plugin: 'java'
-apply plugin: 'tangram.tools'
-sourceCompatibility = 1.8
-targetCompatibility = 1.8
-version = (new XmlParser()).parse('pom.xml').parent.version.text()
-buildscript {
-  repositories {
-    maven { url "http://oss.jfrog.org/artifactory/oss-snapshot-local"; }
-    jcenter()
-  }
-  dependencies {
-    classpath 'tangram:gradle-plugin:1.1.2'
-  }
-}
-repositories {
-    mavenLocal()
-    maven { url "http://oss.jfrog.org/artifactory/oss-snapshot-local"; }
-    jcenter()
-}
-dependencies {
-    compile group: 'org.apache.causeway.core', name: 'causeway-core-applib', 
version: version
-}
-task copyClasses << {
-    copy {
-        from 'build/classes/main'
-        into 'target/classes'
-    }
-}
-----
-
-The script is intended to be in the background as a daemon while 
editing/developing; whenever a change is made to any source code, gradle will 
automatically compile _and_ enhance the code.
-In this way it eliminates the need to start up Maven and run the enhancer goal.
-
-To use, you must disable the IntelliJ's automatic building of the 'dom' 
project.
-This is done using:
-`File > Settings > Build, Execution, Deployment > Compiler > Excludes`, and 
then exclude the `.../dom/src/main/java`
-directory:
-
-image::070-advanced/002-compiler-exclude.png[width="800px"]
-
-
-The script can be run in the background using:
-
-[source,bash]
-----
-gradle -t --offline &
-----
-
-from the command line (in the `dom` module).
-
-image::070-advanced/004-gradle-output.png[width="600px"]
 
 == Using Gradle for liveReload
 
-Similarly, gradle can be run to reduce the turn-around time when tweaking the 
UI (defined by the
+Gradle can be run to reduce the turn-around time when tweaking the UI (defined 
by the
 xref:userguide:ROOT:ui-layout-and-hints.adoc#object-layout[*.layout.xml] file 
for each domain class), when the app is running.
 
 The framework will automatically notice any changes to `.layout.xml` files, 
but these are read from the classpath (the `target/classes` directory), not the 
source path.
@@ -157,8 +96,8 @@ link:http://github.com/dcevm/dcevm[DCEVM] enhances the JVM 
with true hot-swap ad
 
 In the context of Apache Causeway, this is very useful for contributed actions 
and mixins and also view models; you should then be able to write these actions 
and have them be picked up without restarting the application.
 
-Changing persisting domain entities is more problematic, for two reasons: the 
JDO/DataNucleus enhancer needs to run on domain entities, and also at runtime 
JDO/DataNucleus would need to rebuild its own metamodel.
-You may find that adding actions will work, but adding new properties or 
collections is much less likely to.
+Changing persisting domain entities is more problematic, because the ORM needs 
to rebuild its own metamodel.
+You may find that adding actions will work, but adding new properties or 
collections are less likely to.
 
 To set up DCEVM, download the appropriate JAR from the 
link:https://dcevm.github.io/[github page], and run the installer.
 For example:
diff --git 
a/antora/components/setupguide/modules/intellij/partials/file-templates.txt 
b/antora/components/setupguide/modules/intellij/partials/file-templates.txt
deleted file mode 100644
index f4b68d23d2b..00000000000
--- a/antora/components/setupguide/modules/intellij/partials/file-templates.txt
+++ /dev/null
@@ -1,40 +0,0 @@
-= File Templates
-
-:Notice: Licensed to the Apache Software Foundation (ASF) under one or more 
contributor license agreements. See the NOTICE file distributed with this work 
for additional information regarding copyright ownership. The ASF licenses this 
file to you 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. http://www.apache.org/licenses/LICENSE-2.0 . Unless required by 
applicable law or ag [...]
-:page-partial:
-
-
-// LATER
-
-Next we recommend you import a set of standard file templates.
-These are used to create new classes or supporting files:
-
-.File templates
-image::030-import-settings/040-file-templates.png[width="400px"]
-
-The file templates are provided as a settings JAR file, namely 
*link:{attachmentsdir}/causeway-settings-file-templates.jar[causeway-settings-file-templates.jar]*.
-Download this file.
-
-Next, import using `File > Import Settings`, specifying the directory that you 
have downloaded the file to:
-
-.IntelliJ Import Settings - Specify JAR file
-image::030-import-settings/010-settings-import-jar.png[width="400px"]
-
-Select all the categories (there should just be one), and hit OK. then hit 
restart.
-
-[WARNING]
-====
-If importing into IntelliJ 2017.2.3 two categories are shown - "File 
templates" and "File templates (schemes)".
-Select all the categories.
-
-Apparently no categories are shown if importing into IntelliJ 2016.1.1 
Community Edition (and perhaps other 2016 versions).
-The file does import ok into IntelliJ 15.0.x, so we think this is a bug in the 
2016 version.
-
-The workaround is to extract the `.jar` file locally and copy the files into 
IntelliJ's `config` directory, somewhere in your home directory:
-
-* Windows `<User home>\.IdeaIC2016\config`
-* Linux `~/..IdeaIC2016/config`
-* Mac OS `~/Library/Preferences/IdeaIC2016`
-
-====
-
diff --git 
a/antora/components/setupguide/modules/intellij/partials/live-templates.txt 
b/antora/components/setupguide/modules/intellij/partials/live-templates.txt
deleted file mode 100644
index 2bd91d151fb..00000000000
--- a/antora/components/setupguide/modules/intellij/partials/live-templates.txt
+++ /dev/null
@@ -1,22 +0,0 @@
-= Live Templates
-
-:Notice: Licensed to the Apache Software Foundation (ASF) under one or more 
contributor license agreements. See the NOTICE file distributed with this work 
for additional information regarding copyright ownership. The ASF licenses this 
file to you 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. http://www.apache.org/licenses/LICENSE-2.0 . Unless required by 
applicable law or ag [...]
-
-
-// LATER
-
-We also recommend you import a set of live templates.
-These are used to add new methods to existing classes:
-
-.Live templates
-image::030-import-settings/050-live-templates.png[width="600px"]
-
-The live templates have a prefix of either:
-
-* `is` : for Apache Causeway domain objects
-* `ju` : for JUnit tests
-* `jm` : for JMock mocks or libraries
-
-The live templates are also provided as a settings JAR file, namely 
*link:{attachmentsdir}/resources/intellij/causeway-settings-live-templates.jar[causeway-settings-live-templates.jar]*.
-Download and import (as for the previous settings JAR files).
-
diff --git a/antora/components/userguide/modules/ROOT/pages/value-types.adoc 
b/antora/components/userguide/modules/ROOT/pages/value-types.adoc
index 0f617d17ddf..aea3302f2cd 100644
--- a/antora/components/userguide/modules/ROOT/pages/value-types.adoc
+++ b/antora/components/userguide/modules/ROOT/pages/value-types.adoc
@@ -375,10 +375,11 @@ The string returned must be URL safe.
 As we can see, this is not the simplest of APIs, but the simplification it 
brings to your entities and view models that can now _consume_ your new value 
type means that it may be worth the effort.
 
 We're not quite finished with the glue code, unfortunately.
-Chances are that you will want to persist the new value to the database, which 
means that the ORM also requires its own SPI to be implemented (but they are 
almost identical).
+Chances are that you will want to persist the new value to the database, which 
means that the object store also requires its own SPI to be implemented.
+
+For the xref:pjpa:ROOT:about.adoc[JPA/Eclipselink] object store, implement the 
`javax.persistence.AttributeConverter` SPI.
+For example:
 
-* if using xref:pjpa::about.adoc[JPA], then implement the 
`javax.persistence.AttributeConverter` SPI:
-+
 [source,java]
 .EmailAddressConverter.java
 ----
@@ -401,29 +402,6 @@ public class EmailAddressConverter implements 
AttributeConverter<EmailAddress, S
 }
 ----
 
-* if using xref:pjdo::about.adoc[JDO], then implement the 
`org.datanucleus.store.types.converters.TypeConverter` SPI:
-+
-[source,java]
-----
-public class EmailAddressConverter implements TypeConverter<EmailAddress, 
String>{
-
-    private static final long serialVersionUID = 1L;
-
-    @Override
-    public String toDatastoreType(final EmailAddress memberValue) {
-        return memberValue != null
-                ? memberValue.getEmailAddress()
-                : null;
-    }
-
-    @Override
-    public EmailAddress toMemberType(final String datastoreValue) {
-        return datastoreValue != null
-                ? EmailAddress.of(datastoreValue)
-                : null;
-    }
-}
-----
 
 === Composite value types
 
@@ -597,7 +575,7 @@ Also, it is not possible to use a custom value type as part 
of the object's id,
 
 
 If using within the database then you will also need to map the custom type to 
the database.
-If mapping to xref:pjpa::about.adoc[JPA/EclipseLink], use `@Embedded` and 
`@Embeddable`; see for example 
link:https://www.baeldung.com/jpa-embedded-embeddable[this baeldung post] on 
the topic.
+If using the xref:pjpa::about.adoc[JPA/EclipseLink] object store, use 
`@Embedded` and `@Embeddable`; see for example 
link:https://www.baeldung.com/jpa-embedded-embeddable[this baeldung post] on 
the topic.
 
 
 
diff --git a/antora/playbooks/site.NEXT.yml b/antora/playbooks/site.NEXT.yml
index 6f1f23dbed0..dd7d537cd82 100644
--- a/antora/playbooks/site.NEXT.yml
+++ b/antora/playbooks/site.NEXT.yml
@@ -187,7 +187,7 @@ content:
       start_path: persistence/jdo/adoc # pjdo
       branches: [2.0.0, 2.1.0, 3.0.0, 3.1.0, 3.2.0, 3.3.0, 3.4.0, 3.5.0]
     - url: .
-      start_path: persistence/querydsl/adoc # pjdo
+      start_path: persistence/querydsl/adoc
       branches: [3.2.0, 3.3.0, 3.4.0, 3.5.0]
 
     # regression tests
diff --git 
a/core/runtimeservices/src/main/adoc/modules/runtimeservices/pages/about.adoc 
b/core/runtimeservices/src/main/adoc/modules/runtimeservices/pages/about.adoc
index cc06376049a..2f0d2d8965c 100644
--- 
a/core/runtimeservices/src/main/adoc/modules/runtimeservices/pages/about.adoc
+++ 
b/core/runtimeservices/src/main/adoc/modules/runtimeservices/pages/about.adoc
@@ -9,4 +9,4 @@ Many of the services defined (as interfaces) in the applib are 
actually implemen
 
 Although it's a simplification, you can think of the 
xref:core:metamodel:about.adoc[] module as handling domain types (cf 
`java.lang.Class`), while the xref:core:runtime:about.adoc[], 
xref:core:runtimeservices:about.adoc[] and xref:transaction:about.adoc[] 
modules handle domain object instances (cf `java.lang.Object`).
 
-That said, Spring Boot is responsible for instantiating domain service 
instances, while the persistence mechanisms (xref:pjpa:ROOT:about.adoc[JPA] and 
xref:pjdo:ROOT:about.adoc[JDO]) -- which are not part of the `core` modules -- 
handle the lifecycle of entity instances.
+That said, Spring Boot is responsible for instantiating domain service 
instances, while the xref:pjpa:ROOT:about.adoc[JPA] object store -- which is 
not part of the `core` modules -- handle the lifecycle of entity instances.
diff --git 
a/extensions/core/commandlog/adoc/modules/commandlog/pages/about.adoc 
b/extensions/core/commandlog/adoc/modules/commandlog/pages/about.adoc
index 3e49f2b538b..cb4ccd87e90 100644
--- a/extensions/core/commandlog/adoc/modules/commandlog/pages/about.adoc
+++ b/extensions/core/commandlog/adoc/modules/commandlog/pages/about.adoc
@@ -41,7 +41,7 @@ Add an entry for the _Command Log_ module's own BOM:
 [#dependencies]
 === Dependencies / Imports
 
-In the webapp module of your application, add the following dependency:
+In the webapp module of your application, add the following dependency for the 
xref:pjpa::about.adoc[] object store:
 
 [source,xml]
 .pom.xml
@@ -49,33 +49,26 @@ In the webapp module of your application, add the following 
dependency:
 <dependencies>
     <dependency>
         <groupId>org.apache.causeway.extensions</groupId>
-        
<artifactId>causeway-extensions-commandlog-persistence-XXX</artifactId>    
<!--.-->
+        <artifactId>causeway-extensions-commandlog-persistence-jpa</artifactId>
     </dependency>
 </dependencies>
 ----
-<.> either:
-** `causeway-extensions-commandlog-persistence-jpa` (xref:pjpa::about.adoc[]), 
or
-** `causeway-extensions-commandlog-persistence-jdo` (xref:pjdo::about.adoc[]).
 
 
 In your application's xref:userguide::modules.adoc#appmanifest[App Manifest], 
import the CommandLog modules.
-The exact modules to use will depend upon the persistence mechanism in use:
+For the xref:pjpa:ROOT:about.adoc[JPA/Eclipselink] persistence mechanism, use:
 
 [source,java]
 .AppManifest.java
 ----
 @Configuration
 @Import({
-        ...
-        CausewayModuleExtCommandLogPersistenceXxx.class,        // <.>
-        ...
+        CausewayModuleExtCommandLogPersistenceJpa.class,
+        // ...
 })
 public class AppManifest {
 }
 ----
-<.> either
-** `CausewayModuleExtCommandLogPersistenceJpa` (xref:pjpa::about.adoc[]),or
-** `CausewayModuleExtCommandLogPersistenceJdo`, (xref:pjdo::about.adoc[])
 
 If using xref:security:secman:about.adoc[], you will also need to import the 
xref:testing:fixtures:about.adoc[Fixture] module; SecMan uses fixture scripts 
to seed its entities.
 
diff --git 
a/extensions/core/executionlog/adoc/modules/executionlog/pages/about.adoc 
b/extensions/core/executionlog/adoc/modules/executionlog/pages/about.adoc
index f1ca9c504a5..0ca0a8e387f 100644
--- a/extensions/core/executionlog/adoc/modules/executionlog/pages/about.adoc
+++ b/extensions/core/executionlog/adoc/modules/executionlog/pages/about.adoc
@@ -39,7 +39,7 @@ Add an entry for the _Execution Log_ module's own BOM:
 [#dependencies]
 === Dependencies / Imports
 
-In the webapp module of your application, add the following dependency:
+In the webapp module of your application, add the following dependency for the 
xref:pjpa:ROOT:about.adoc[JPA/Eclipselink] object store:
 
 [source,xml]
 .pom.xml
@@ -47,32 +47,25 @@ In the webapp module of your application, add the following 
dependency:
 <dependencies>
     <dependency>
         <groupId>org.apache.causeway.extensions</groupId>
-        
<artifactId>causeway-extensions-executionlog-persistence-XXX</artifactId>    
<!--.-->
+        
<artifactId>causeway-extensions-executionlog-persistence-jpa</artifactId>
     </dependency>
 </dependencies>
 ----
-<.> either:
-** `causeway-extensions-executionlog-persistence-jpa` 
(xref:pjpa::about.adoc[]), or
-** `causeway-extensions-executionlog-persistence-jdo` (xref:pjdo::about.adoc[])
 
 In your application's xref:userguide::modules.adoc#appmanifest[App Manifest], 
import the _ExecutionLog_ modules.
-The exact modules to use will depend upon the persistence mechanism in use:
+For the xref:pjpa:ROOT:about.adoc[JPA/Eclipselink] persistence mechanism, use:
 
 [source,java]
 .AppManifest.java
 ----
 @Configuration
 @Import({
-        ...
-        CausewayModuleExtExecutionLogPersistenceXxx.class,        // <.>
-        ...
+        CausewayModuleExtExecutionLogPersistenceJpa.class,
+        // ...
 })
 public class AppManifest {
 }
 ----
-<.> either:
-** `CausewayModuleExtExecutionLogPersistenceJdo` (xref:pjpa::about.adoc[]), or
-** `CausewayModuleExtExecutionLogPersistenceJpa` (xref:pjdo::about.adoc[])
 
 If using xref:security:secman:about.adoc[], you will also need to import the 
xref:testing:fixtures:about.adoc[Fixture] module; SecMan uses fixture scripts 
to seed its entities.
 
diff --git 
a/extensions/core/executionoutbox/adoc/modules/executionoutbox/pages/about.adoc 
b/extensions/core/executionoutbox/adoc/modules/executionoutbox/pages/about.adoc
index fb23c8b28a9..300d4b2902f 100644
--- 
a/extensions/core/executionoutbox/adoc/modules/executionoutbox/pages/about.adoc
+++ 
b/extensions/core/executionoutbox/adoc/modules/executionoutbox/pages/about.adoc
@@ -37,7 +37,7 @@ Add a section for _Execution Outbox_'s own BOM:
 [#dependencies]
 === Dependencies / Imports
 
-In the webapp module of your application, add the following dependency:
+In the webapp module of your application, add the following dependency for the 
xref:pjpa:ROOT:about.adoc[JPA/Eclipselink] persistence mechanism:
 
 [source,xml]
 .pom.xml
@@ -45,34 +45,26 @@ In the webapp module of your application, add the following 
dependency:
 <dependencies>
     <dependency>
         <groupId>org.apache.causeway.extensions</groupId>
-        
<artifactId>causeway-extensions-executionoutbox-persistence-XXX</artifactId>    
<!--.-->
+        
<artifactId>causeway-extensions-executionoutbox-persistence-jpa</artifactId>
     </dependency>
 </dependencies>
 ----
-<.> either:
-** `causeway-extensions-executionoutbox-persistence-jpa` 
(xref:pjpa::about.adoc[]), or
-** `causeway-extensions-executionoutbox-persistence-jdo` 
(xref:pjdo::about.adoc[])
 
 
 In your application's xref:userguide::modules.adoc#appmanifest[App Manifest], 
import the _ExecutionOutbox_ modules.
-The exact modules to use will depend upon the persistence mechanism in use:
-
+For the xref:pjpa:ROOT:about.adoc[JPA/Eclipselink] persistence mechanism, use:
 
 [source,java]
 .AppManifest.java
 ----
 @Configuration
 @Import({
-        ...
-        CausewayModuleExtExecutionOutboxPersistenceXxx.class,        // <.>
-        ...
+        CausewayModuleExtExecutionOutboxPersistenceJpa.class,
+        // ...
 })
 public class AppManifest {
 }
 ----
-<.> either:
-** `CausewayModuleExtExecutionOutboxPersistenceJdo` (xref:pjpa::about.adoc[]), 
or
-** `CausewayModuleExtExecutionOutboxPersistenceJpa` (xref:pjdo::about.adoc[])
 
 If using xref:security:secman:about.adoc[], you will also need to import the 
xref:testing:fixtures:about.adoc[Fixture] module; SecMan uses fixture scripts 
to seed its entities.
 
diff --git 
a/extensions/security/audittrail/adoc/modules/audittrail/pages/about.adoc 
b/extensions/security/audittrail/adoc/modules/audittrail/pages/about.adoc
index 33bd122d857..1c812431da9 100644
--- a/extensions/security/audittrail/adoc/modules/audittrail/pages/about.adoc
+++ b/extensions/security/audittrail/adoc/modules/audittrail/pages/about.adoc
@@ -64,7 +64,7 @@ public class MyModule { ... }
 ----
 
 In your application's xref:userguide::modules.adoc#appmanifest[App Manifest], 
import the implementation modules of this extension.
-The exact modules to use will depend upon the persistence mechanism in use:
+For the xref:pjpa:ROOT:about.adoc[JPA/Eclipselink] persistence mechanism:
 
 * add this dependency to your webapp's `pom.xml`:
 +
@@ -74,13 +74,10 @@ The exact modules to use will depend upon the persistence 
mechanism in use:
 <dependencies>
     <dependency>
         <groupId>org.apache.causeway.extensions</groupId>
-        
<artifactId>causeway-extensions-audittrail-persistence-xxx</artifactId> <!--.-->
+        <artifactId>causeway-extensions-audittrail-persistence-jpa</artifactId>
     </dependency>
 </dependencies>
 ----
-<.> either:
-** `causeway-extensions-audittrail-persistence-jpa` (xref:pjpa::about.adoc[]) 
or
-** `causeway-extensions-audittrail-persistence-jdo` (xref:pjdo::about.adoc[])
 
 * and `@Import` this module to your app manifest:
 +
@@ -89,15 +86,11 @@ The exact modules to use will depend upon the persistence 
mechanism in use:
 ----
 @Configuration
 @Import({
-    CausewayModuleExtAuditTrailPersistenceXxx.class,    // <.>
+    CausewayModuleExtAuditTrailPersistenceJpa.class,
     // ...
 })
 public class MyAppManifest { ... }
 ----
-<.> either
-+
-** `CausewayModuleExtAuditTrailPersistenceJpa` (xref:pjpa::about.adoc[]) or
-** `CausewayModuleExtAuditTrailPersistenceJdo` (xref:pjdo::about.adoc[])
 
 
 [#menubar-layout-xml]
diff --git 
a/extensions/security/secman/adoc/modules/secman/pages/setting-up.adoc 
b/extensions/security/secman/adoc/modules/secman/pages/setting-up.adoc
index 361076252b3..243a0280c70 100644
--- a/extensions/security/secman/adoc/modules/secman/pages/setting-up.adoc
+++ b/extensions/security/secman/adoc/modules/secman/pages/setting-up.adoc
@@ -35,7 +35,7 @@ In addition, add an entry for _SecMan_'s own BOM:
 == Dependencies
 
 In the webapp module of your application, add the implementation modules of 
the extension.
-The exact modules to use will depend upon the persistence mechanism in use:
+For the xref:pjpa:ROOT:about.adoc[JPA/Eclipselink] persistence mechanism, use:
 
 [source,xml]
 .pom.xml
@@ -43,7 +43,7 @@ The exact modules to use will depend upon the persistence 
mechanism in use:
 <dependencies>
     <dependency>
         <groupId>org.apache.causeway.extensions</groupId>
-        <artifactId>causeway-extensions-secman-persistence-XXX</artifactId>    
<!--.-->
+        <artifactId>causeway-extensions-secman-persistence-jpa</artifactId>
     </dependency>
     <dependency>
         <groupId>org.apache.causeway.extensions</groupId>
@@ -51,14 +51,9 @@ The exact modules to use will depend upon the persistence 
mechanism in use:
     </dependency>
 </dependencies>
 ----
-<.> either:
-** `causeway-extensions-secman-persistence-jpa` (xref:pjpa::about.adoc[]) or
-** `causeway-extensions-secman-persistence-jdo` (xref:pjdo::about.adoc[])
 <.> provides an implementation of `PasswordEncoder`, so that passwords are 
only persisted in encrypted form.
 
-
 In your application's xref:userguide::modules.adoc#appmanifest[App Manifest], 
import the corresponding _SecMan_ modules.
-Again, the exact modules to use will depend upon the persistence mechanism in 
use.
 You will also need to import the fixture module; SecMan uses fixture scripts 
to seed its entities:
 
 [source,java]
@@ -66,19 +61,14 @@ You will also need to import the fixture module; SecMan 
uses fixture scripts to
 ----
 @Configuration
 @Import({
-        ...
-        CausewayModuleExtSecmanPersistenceXxx.class,        // <.>
+        CausewayModuleExtSecmanPersistenceJpa.class,
         CausewayModuleExtSecmanEncryptionJbcrypt.class,     // <.>
-
         CausewayModuleTestingFixturesApplib.class,          // <.>
-        ...
+        // ...
 })
 public class AppManifest {
 }
 ----
-<.> either
-** `CausewayModuleExtSecmanPersistenceJpa` (xref:pjpa::about.adoc[]) or
-** `CausewayModuleExtSecmanPersistenceJdo` (xref:pjdo::about.adoc[])
 <.> use Jbcrypt to encrypt passwords
 <.> fixture script support
 
diff --git 
a/extensions/security/sessionlog/adoc/modules/sessionlog/pages/about.adoc 
b/extensions/security/sessionlog/adoc/modules/sessionlog/pages/about.adoc
index d24e3c4d6b2..7e8ffd5b11f 100644
--- a/extensions/security/sessionlog/adoc/modules/sessionlog/pages/about.adoc
+++ b/extensions/security/sessionlog/adoc/modules/sessionlog/pages/about.adoc
@@ -61,7 +61,7 @@ public class MyModule { ... }
 ----
 
 In your application's xref:userguide::modules.adoc#appmanifest[App Manifest], 
import the implementation modules of this extension.
-The exact modules to use will depend upon the persistence mechanism in use:
+For the xref:pjpa:ROOT:about.adoc[JPA/Eclipselink] persistence mechanism:
 
 * add this dependency to your webapp's `pom.xml`:
 +
@@ -71,13 +71,10 @@ The exact modules to use will depend upon the persistence 
mechanism in use:
 <dependencies>
     <dependency>
         <groupId>org.apache.causeway.extensions</groupId>
-        
<artifactId>causeway-extensions-sessionlog-persistence-xxx</artifactId> <!--.-->
+        <artifactId>causeway-extensions-sessionlog-persistence-jpa</artifactId>
     </dependency>
 </dependencies>
 ----
-<.> either:
-** `causeway-extensions-sessionlog-persistence-jpa` (xref:pjpa::about.adoc[]) 
or
-** `causeway-extensions-sessionlog-persistence-jdo` (xref:pjdo::about.adoc[])
 
 * and `@Import` this module to your app manifest:
 +
@@ -86,15 +83,11 @@ The exact modules to use will depend upon the persistence 
mechanism in use:
 ----
 @Configuration
 @Import({
-    CausewayModuleExtSessionLogPersistenceXxx.class,    // <.>
+    CausewayModuleExtSessionLogPersistenceJpa.class,
     // ...
 })
 public class MyAppManifest { ... }
 ----
-<.> either
-+
-** `CausewayModuleExtSessionLogPersistenceJpa` (xref:pjpa::about.adoc[]) or
-** `CausewayModuleExtSessionLogPersistenceJdo` (xref:pjdo::about.adoc[])
 
 
 
diff --git a/persistence/jpa/adoc/modules/ROOT/pages/hints-and-tips.adoc 
b/persistence/jpa/adoc/modules/ROOT/pages/hints-and-tips.adoc
index 39a8d511857..6df9fe388c3 100644
--- a/persistence/jpa/adoc/modules/ROOT/pages/hints-and-tips.adoc
+++ b/persistence/jpa/adoc/modules/ROOT/pages/hints-and-tips.adoc
@@ -6,4 +6,3 @@
 
 This page provides some solutions for problems we've encountered ourselves or 
have been raised on the Apache Causeway mailing lists.
 
-include::pjdo:ROOT:partial$hints-and-tips/tracing-sql-statements.adoc[leveloffset=+1]
diff --git a/persistence/jpa/adoc/modules/ROOT/partials/module-nav.adoc 
b/persistence/jpa/adoc/modules/ROOT/partials/module-nav.adoc
index ef72866858a..0a13610366b 100644
--- a/persistence/jpa/adoc/modules/ROOT/partials/module-nav.adoc
+++ b/persistence/jpa/adoc/modules/ROOT/partials/module-nav.adoc
@@ -5,4 +5,4 @@
 * xref:pjpa:ROOT:mapping-guide.adoc[Mapping Guide]
 * xref:pjpa:ROOT:dependency-injection.adoc[Dependency Injection]
 * xref:pjpa:ROOT:domain-services.adoc[Domain Services]
-* xref:pjpa:ROOT:hints-and-tips.adoc[Hints and Tips]
+// * xref:pjpa:ROOT:hints-and-tips.adoc[Hints and Tips]
diff --git a/persistence/querydsl/adoc/modules/ROOT/pages/about.adoc 
b/persistence/querydsl/adoc/modules/ROOT/pages/about.adoc
index fecb4927932..21a1cbaf1c9 100644
--- a/persistence/querydsl/adoc/modules/ROOT/pages/about.adoc
+++ b/persistence/querydsl/adoc/modules/ROOT/pages/about.adoc
@@ -3,8 +3,7 @@
 :Notice: Licensed to the Apache Software Foundation (ASF) under one or more 
contributor license agreements. See the NOTICE file distributed with this work 
for additional information regarding copyright ownership. The ASF licenses this 
file to you 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. http://www.apache.org/licenses/LICENSE-2.0 . Unless required by 
applicable law or ag [...]
 
 
-link:http://querydsl.com/[QueryDSL] provides a way to express queries 
independently of the particular persistence mechanism, abstracting out whether 
the ORM in use is xref:pjdo:ROOT:about.adoc[JDO] or 
xref:pjpa:ROOT:about.adoc[JPA].
-
+link:http://querydsl.com/[QueryDSL] provides a way to express type-safe 
queries.
 Apache Causeway's integration with QueryDSL provides the following 
capabilities:
 
 * 
xref:refguide:persistence:index/querydsl/applib/services/repo/QueryDslRepository.adoc[]
@@ -24,7 +23,7 @@ The query expressions from 
xref:refguide:persistence:index/querydsl/applib/servi
 Those from 
xref:refguide:persistence:index/querydsl/applib/services/support/DetachedQueryFactory.adoc[]
 are detached; they cannot be submitted directly.
 Instead, they are intended to be combined with the attached queries, e.g. in 
subqueries.
 +
-Although 
xref:refguide:persistence:index/querydsl/applib/services/support/QueryDslSupport.adoc[]
 itself is abstract, both the xref:pjpa::about.adoc[JPA] and 
xref:pjdo::about.adoc[JDO] persistence mechanisms provide concrete 
implementations.
+The 
xref:refguide:persistence:index/querydsl/applib/services/support/QueryDslSupport.adoc[]
 service is abstract, while the the xref:pjpa::about.adoc[JPA/EclipseLink] 
persistence mechanism provides the concrete implementations.
 
 * 
xref:refguide:persistence:index/querydsl/applib/services/auto/AutoCompleteGeneratedQueryService.adoc[]
 +
diff --git 
a/persistence/querydsl/adoc/modules/ROOT/pages/setup-and-configuration.adoc 
b/persistence/querydsl/adoc/modules/ROOT/pages/setup-and-configuration.adoc
index 2a6be706052..a990b749560 100644
--- a/persistence/querydsl/adoc/modules/ROOT/pages/setup-and-configuration.adoc
+++ b/persistence/querydsl/adoc/modules/ROOT/pages/setup-and-configuration.adoc
@@ -22,17 +22,6 @@ This section describes the required changes to use QueryDSL 
if using xref:pjpa::
 include::partial$setup-and-configuration-for-persistence-mechanism.adoc[]
 
 
-== JDO
-
-This section describes the required changes to use QueryDSL if using 
xref:pjdo::about.adoc[JDO] as your persistence mechanism.
-
-:querydsl-implementation: jdo
-:querydsl-implementation-capitalized: Jdo
-:querydsl-annotation-processor: com.querydsl.apt.jdo.JDOAnnotationProcessor
-
-
-include::partial$setup-and-configuration-for-persistence-mechanism.adoc[]
-
 
 == Configuration Properties
 
diff --git a/security/adoc/modules/ROOT/pages/about.adoc 
b/security/adoc/modules/ROOT/pages/about.adoc
index bc81259d337..417e7328486 100644
--- a/security/adoc/modules/ROOT/pages/about.adoc
+++ b/security/adoc/modules/ROOT/pages/about.adoc
@@ -34,7 +34,7 @@ include::security:spring:partial$module-nav.adoc[]
 In addition to the security SPI implementations, there are a number of 
security-related extensions:
 
 * The xref:security:spring-oauth2:about.adoc[Spring OAuth2] extension 
configures the xref:security:spring:about.adoc[Spring authenticator] for OAuth2 
stores (eg gmail, facebook)
-* The xref:security:secman:about.adoc[SecMan extension] provides both an 
authenticator and an authorizor from domain entities (users, roles and 
permission entities) using either xref:pjpa:ROOT:about.adoc[JPA] or 
xref:pjdo:ROOT:about.adoc[JDO].
+* The xref:security:secman:about.adoc[SecMan extension] provides both an 
authenticator and an authorizor from domain entities (users, roles and 
permission entities) using  xref:pjpa:ROOT:about.adoc[JPA/EclipseLink].
 +
 As these users, roles and permissions are domain objects, they can be 
administered through Apache Causeway itself.
 
diff --git 
a/testing/archtestsupport/adoc/modules/archtestsupport/pages/about.adoc 
b/testing/archtestsupport/adoc/modules/archtestsupport/pages/about.adoc
index 0956758e16a..7eeb6b84d46 100644
--- a/testing/archtestsupport/adoc/modules/archtestsupport/pages/about.adoc
+++ b/testing/archtestsupport/adoc/modules/archtestsupport/pages/about.adoc
@@ -176,7 +176,7 @@ None of these rules take any arguments, so simply include 
(as a static field) th
 
 == Entity Checks
 
-Entity rule checks are provided for both xref:pjpa::about.adoc[] and 
xref:pjdo::about.adoc[], in `ArchitectureJpaRules` and `ArchitectureJdoRules` 
respectively:
+Entity rule checks are provided for xref:pjpa::about.adoc[JPA/EclipseLink] in 
the `ArchitectureJpaRules` class:
 
 * Strongly Recommended
 
@@ -191,7 +191,6 @@ Required in almost all cases:
 Required to allow JAXB view models to transparently reference entities:
 
 *** 
`every_jpa_Entity_must_be_annotated_with_XmlJavaAdapter_of_PersistentEntityAdapter()`
-*** 
`every_jdo_PersistenceCapable_must_be_annotated_as_XmlJavaAdapter_PersistentEntityAdapter()`
 
 ** ensure JPA entity defines a surrogate key:
 +
@@ -199,13 +198,6 @@ Enforces a very common convention for JPA entities:
 
 *** `every_jpa_Entity_must_have_an_id_field()`
 
-** ensure JDO entity's logicalTypeName matches its discriminator (if any)
-+
-Both the logical type name and the `@Discriminator` for subclasses are a 
unique identifier of a type; this rule says they should be the same value.
-
-*** `every_logicalTypeName_and_jdo_discriminator_must_be_same()`
-
-
 * Recommended
 
 ** encourage entities be organised into schemas:
@@ -213,7 +205,6 @@ Both the logical type name and the `@Discriminator` for 
subclasses are a unique
 for teams adopting a "(micro) service-oriented" mindset:
 
 *** `every_jpa_Entity_must_be_annotated_as_Table_with_schema()`
-*** `every_jdo_PersistenceCapable_must_have_schema()`
 
 
 ** ensure JPA enum fields are persisted as strings:
@@ -228,14 +219,12 @@ For teams that prefer to query the database with enum 
values persisted as string
 For teams that like to use `SortedSet` for parented collections, and rely on 
the entity to render itself in a "sensible" order:
 
 *** `every_jpa_Entity_must_implement_Comparable()`
-*** `every_jdo_PersistenceCapable_must_implement_Comparable()`
 
 ** ensure entities have a unique business key:
 +
 For teams that insist on business keys in addition to surrogate keys
 
 *** `every_jpa_Entity_must_be_annotated_as_Table_with_uniqueConstraints()`
-*** `every_jdo_PersistenceCapable_must_be_annotated_as_Uniques_or_Unique()`
 
 * Optional
 
@@ -244,27 +233,18 @@ For teams that insist on business keys in addition to 
surrogate keys
 For teams that like to emphasise entities vs view models:
 
 *** `every_jpa_Entity_must_be_annotated_with_DomainObject_nature_of_ENTITY()`
-*** 
`every_jdo_PersistenceCapable_must_be_annotated_with_DomainObject_nature_of_ENTITY`
-
-** ensure if JDO entity has a surrogate key then its annotations are 
consistent:
-+
-For teams that like to be explicit about the use of surrogate keys:
-
-*** 
`every_jdo_PersistenceCapable_with_DATASTORE_identityType_must_be_annotated_as_DataStoreIdentity()`
 
 ** enable injected fields in entities:
 +
 For teams that use type-safe queries (and want to ensure that services do not 
appear superfluously as fields in the "QXxx" classes):
 
 *** `every_injected_field_of_jpa_Entity_must_be_annotated_with_Transient()`
-*** 
`every_injected_field_of_jdo_PersistenceCapable_must_be_annotated_with_NotPersistent()`
 
 ** encourage optimistic locking:
 +
 For teams that prefer optimistic locking as a standard everywhere:
 
 *** `every_jpa_Entity_must_have_a_version_field()`
-*** `every_jdo_PersistenceCapable_must_be_annotated_with_Version()`
 
 ** encourage static factory methods for entities:
 +
diff --git a/valuetypes/asciidoc/adoc/modules/asciidoc/pages/about.adoc 
b/valuetypes/asciidoc/adoc/modules/asciidoc/pages/about.adoc
index 6f42bf2e3ad..a690df7214d 100644
--- a/valuetypes/asciidoc/adoc/modules/asciidoc/pages/about.adoc
+++ b/valuetypes/asciidoc/adoc/modules/asciidoc/pages/about.adoc
@@ -78,17 +78,16 @@ In addition, in the webapp module of your application, add 
the following depende
 </dependency>
 ----
 
-* and for persistence:
+* and for persistence (using the xref:pjpa:ROOT:about.adoc[JPA/Eclipselink] 
persistence mechanism):
 +
 [source,xml]
 .pom.xml
 ----
 <dependency>
     <groupId>org.apache.causeway.valuetypes</groupId>
-    <artifactId>causeway-valuetypes-asciidoc-xxx</artifactId>   <!--.-->
+    <artifactId>causeway-valuetypes-asciidoc-jpa</artifactId>
 </dependency>
 ----
-<.> where `xxx` is `jpa` (if using xref:pjpa::about.adoc[]) or `jdo` (if using 
xref:pjdo::about.adoc[]).
 
 And in your application's xref:userguide::modules.adoc#appmanifest[App 
Manifest], import the extension's implementation module:
 
@@ -98,13 +97,12 @@ And in your application's 
xref:userguide::modules.adoc#appmanifest[App Manifest]
 @Configuration
 @Import({
         CausewayModuleValAsciidocUiWkt.class,
-        CausewayModuleValAsciidocPersistenceXxx.class,  <!--.-->
-        ...
+        CausewayModuleValAsciidocPersistenceJpa.class,
+        // ...
 })
 public class AppManifest {
 }
 ----
-<.> where `Xxx` is `Jpa` (if using xref:pjpa::about.adoc[]) or `Jdo` (if using 
xref:pjdo::about.adoc[]).
 
 
 == Usage
diff --git a/valuetypes/markdown/adoc/modules/markdown/pages/about.adoc 
b/valuetypes/markdown/adoc/modules/markdown/pages/about.adoc
index 7cd99e8fc7d..05ef2828ea1 100644
--- a/valuetypes/markdown/adoc/modules/markdown/pages/about.adoc
+++ b/valuetypes/markdown/adoc/modules/markdown/pages/about.adoc
@@ -78,17 +78,16 @@ In addition, in the webapp module of your application, add 
the following depende
 </dependency>
 ----
 
-* and for persistence:
+* and for persistence, using the xref:pjpa:ROOT:about.adoc[JPA/Eclipselink] 
persistence mechanism:
 +
 [source,xml]
 .pom.xml
 ----
 <dependency>
     <groupId>org.apache.causeway.valuetypes</groupId>
-    <artifactId>causeway-valuetypes-markdown-persistence-xxx</artifactId>   
<!--.-->
+    <artifactId>causeway-valuetypes-markdown-persistence-jpa</artifactId>
 </dependency>
 ----
-<.> where `xxx` is `jpa` (if using xref:pjpa::about.adoc[]) or `jdo` (if using 
xref:pjdo::about.adoc[]).
 
 And in your application's xref:userguide::modules.adoc#appmanifest[App 
Manifest], import the extension's implementation module:
 
@@ -98,14 +97,12 @@ And in your application's 
xref:userguide::modules.adoc#appmanifest[App Manifest]
 @Configuration
 @Import({
         CausewayModuleValMarkdownUiWkt.class,
-               CausewayModuleValMarkdownMetaModel.class,
-
-        ...
+        CausewayModuleValMarkdownPersistenceJpa.class,
+        // ...
 })
 public class AppManifest {
 }
 ----
-<.> where `Xxx` is `Jpa` (if using xref:pjpa::about.adoc[]) or `Jdo` (if using 
xref:pjdo::about.adoc[]).
 
 
 == Usage
diff --git a/valuetypes/vega/adoc/modules/vega/pages/about.adoc 
b/valuetypes/vega/adoc/modules/vega/pages/about.adoc
index 4740ed36a91..3e8abd113f0 100644
--- a/valuetypes/vega/adoc/modules/vega/pages/about.adoc
+++ b/valuetypes/vega/adoc/modules/vega/pages/about.adoc
@@ -79,17 +79,16 @@ In addition, in the webapp module of your application, add 
the following depende
 </dependency>
 ----
 
-* and for persistence:
+* and for persistence, using the xref:pjpa:ROOT:about.adoc[JPA/Eclipselink] 
persistence mechanism:
 +
 [source,xml]
 .pom.xml
 ----
 <dependency>
     <groupId>org.apache.causeway.valuetypes</groupId>
-    <artifactId>causeway-valuetypes-vega-xxx</artifactId>   <!--.-->
+    <artifactId>causeway-valuetypes-vega-jpa</artifactId>
 </dependency>
 ----
-<.> where `xxx` is `jpa` (if using xref:pjpa::about.adoc[]) or `jdo` (if using 
xref:pjdo::about.adoc[]).
 
 And in your application's xref:userguide::modules.adoc#appmanifest[App 
Manifest], import the extension's implementation module:
 
@@ -99,13 +98,12 @@ And in your application's 
xref:userguide::modules.adoc#appmanifest[App Manifest]
 @Configuration
 @Import({
         CausewayModuleValVegaUiWkt.class,
-        CausewayModuleValVegaPersistenceXxx.class,  <!--.-->
-        ...
+        CausewayModuleValVegaPersistenceJpa.class,
+        // ...
 })
 public class AppManifest {
 }
 ----
-<.> where `Xxx` is `Jpa` (if using xref:pjpa::about.adoc[]) or `Jdo` (if using 
xref:pjdo::about.adoc[]).
 
 
 == Usage


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