= Migrating from M8/M9 to RC1

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== Project Rename

Any occurrences of `isis` within source code, including configuration resources, have been replaced with `causeway` while keeping variants:

* lower-case `isis` -> `causeway`
* upper-case `ISIS` -> `CAUSEWAY`
* or capital case `Isis` -> `Causeway`

=== XSDs

The namespace and location of XSDs has changed:

* from: `http://isis.apache.org/...`
* to `https://causeway.apache.org/...`

Note the change from `http` to `https`.

To update your app:

* the `menubars.layout.xml` should now declare the following namespaces and locations:
+
[source,xml]
.menubars.layout.xml
----
<mb3:menuBars
        xsi:schemaLocation="https://causeway.apache.org/applib/layout/menubars/bootstrap3 https://causeway.apache.org/applib/layout/menubars/bootstrap3/menubars.xsd https://causeway.apache.org/applib/layout/component https://causeway.apache.org/applib/layout/component/component.xsd"
        xmlns:mb3="https://causeway.apache.org/applib/layout/menubars/bootstrap3"
        xmlns:cpt="https://causeway.apache.org/applib/layout/component"
        xmlns:lnk="https://causeway.apache.org/applib/layout/links"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
    ...
</mb3:menuBars>
----

* while any `Xxx.layout.xml` files (for `Xxx` domain object) should declare:
+
[source,xml]
.Xxx.layout.xml
----
<bs3:grid
        xsi:schemaLocation="https://causeway.apache.org/applib/layout/component https://causeway.apache.org/applib/layout/component/component.xsd https://causeway.apache.org/applib/layout/grid/bootstrap3 https://causeway.apache.org/applib/layout/grid/bootstrap3/bootstrap3.xsd"
        xmlns:bs3="https://causeway.apache.org/applib/layout/grid/bootstrap3"
        xmlns:cpt="https://causeway.apache.org/applib/layout/component"
        xmlns:lnk="https://causeway.apache.org/applib/layout/links"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
    ...
</bs3:grid>
----


If you are still using the "isis" artifacts, then the old schemas are still available, but have moved to the `layout-v1` directory.
Adjust the locations in your `.layout.xml` files accordingly:

* the `menubars.layout.xml` should now declare the following locations (namespace unchanged):
+
[source,xml]
.menubars.layout.xml
----
<mb3:menuBars
        xsi:schemaLocation="http://isis.apache.org/applib/layout/menubars/bootstrap3 https://causeway.apache.org/applib/layout-v1/menubars/bootstrap3/menubars.xsd http://isis.apache.org/applib/layout/component https://causeway.apache.org/applib/layout-v1/component/component.xsd http://isis.apache.org/applib/layout/links https://causeway.apache.org/applib/layout-v1/links/links.xsd"
        xmlns:mb3="http://isis.apache.org/applib/layout/menubars/bootstrap3"
        xmlns:cpt="http://isis.apache.org/applib/layout/component"
        xmlns:lnk="http://isis.apache.org/applib/layout/links"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
    ...
</mb3:menuBars>
----

* while any `Xxx.layout.xml` files (for `Xxx` domain object) should declare:
+
[source,xml]
.Xxx.layout.xml
----
<bs3:grid
        xsi:schemaLocation="http://isis.apache.org/applib/layout/component https://causeway.apache.org/applib/layout-v1/component/component.xsd http://isis.apache.org/applib/layout/grid/bootstrap3 https://causeway.apache.org/applib/layout-v1/grid/bootstrap3/bootstrap3.xsd http://isis.apache.org/applib/layout/links https://causeway.apache.org/applib/layout-v1/links/links.xsd"
        xmlns:bs3="http://isis.apache.org/applib/layout/grid/bootstrap3"
        xmlns:cpt="http://isis.apache.org/applib/layout/component"
        xmlns:lnk="http://isis.apache.org/applib/layout/links"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
    ...
</bs3:grid>
----

== Configuration

The following configuration properties have been changed:

[cols="2m,3m", options="header"]
|===

| previously
| new

| causeway.viewer.wicket.application.css
| causeway.viewer.wicket.css

| causeway.viewer.wicket.application.js
| causeway.viewer.wicket.js

| causeway.viewer.*wicket*.application.menubars-layout-*xml*
| causeway.viewer.*common*.application.menubars-layout-*file*

| causeway.viewer.*wicket*.application
| causeway.viewer.*common*.application

| causeway.viewer.*wicket*.credit
| causeway.viewer.*common*.credit

|===

The following configuration properties have been removed (with no replacement):

* `causeway.extensions.command-log.publish-policy`
+
As a result, commands for actions that do _not_ change state (eg queries) are now also persisted.


== Maven Artifacts

The following changed:
[cols="2a,3a", options="header"]

|===

| previously
| new

|
`o.a.c.v.restfulobjects.jaxrsresteasy4.CausewayModuleViewerRestfulObjectsJaxrsResteasy4` from
[source,xml]
----
<groupId>org.apache.causeway.viewer</groupId>
<artifactId>causeway-viewer-restfulobjects-jaxrsresteasy4</artifactId>
----
|
`o.a.c.v.restfulobjects.jaxrsresteasy.CausewayModuleViewerRestfulObjectsJaxrsResteasy` from
[source,xml]
----
<groupId>org.apache.causeway.viewer</groupId>
<artifactId>causeway-viewer-restfulobjects-jaxrsresteasy</artifactId>
----
|===

== Programming Model

The following changed:
[cols="2a,3a", options="header"]

|===

| previously
| new

| `ViewModel` implementations were required to have at least a _public_ single argument constructor,
taking a `String` argument for the `ViewModel's` memento.
| `ViewModel` implementations now allow *any* _public_ constructor signature,
where arguments are auto-resolved by the `ServiceRegistry`.

`String` arguments still get the `ViewModel's` memento passed in.

If the `ViewModel` has multiple _public_ constructors, it picks (the) one,
that has an `@Inject` or `@Autowired` annotation.

| `@DomainObject(logicalTypeName=..)`
| removed as deprecated since 2.0.0-M8; use `@Named` instead

| `@DomainService(logicalTypeName=..)`
| removed as deprecated since 2.0.0-M8; use `@Named` instead

| `@Value(logicalTypeName=..)`
| removed as deprecated since 2.0.0-M8; use `@Named` instead

|===
