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[Docs] Additional datasources support (#42655)
* [Docs] Additional datasources support Closes #40388 Closes #42263 Co-authored-by: Václav Muzikář <vaclav@muzikari.cz> Signed-off-by: Martin Bartoš <mabartos@redhat.com> * Rename namedKey to wildcardKey in the code Signed-off-by: Martin Bartoš <mabartos@redhat.com> * Clarify the defaults for DB kind Signed-off-by: Martin Bartoš <mabartos@redhat.com> * Be more clear about the Named key reference in guide Signed-off-by: Martin Bartoš <mabartos@redhat.com> * Vasek's review Signed-off-by: Martin Bartoš <mabartos@redhat.com> --------- Signed-off-by: Martin Bartoš <mabartos@redhat.com> Co-authored-by: Václav Muzikář <vaclav@muzikari.cz>
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@@ -12,6 +12,7 @@ include::topics/events.adoc[]
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include::topics/saml-role-mappings-spi.adoc[]
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endif::[]
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include::topics/user-storage.adoc[]
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include::topics/user-storage/entity-manager.adoc[]
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include::topics/user-storage/provider-interfaces.adoc[]
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include::topics/user-storage/provider-capability-interfaces.adoc[]
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include::topics/user-storage/model-interfaces.adoc[]
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@@ -27,18 +27,4 @@ There are two sample projects in link:{quickstartRepo_link}[{quickstartRepo_name
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|===
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In order to connect to the external database, you should use the {project_name} properties for the additional datasources described in the link:https://www.keycloak.org/server/db#configure-multiple-datasources[Configure multiple datasources] guide.
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@@ -0,0 +1,13 @@
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=== Accessing the new entity manager
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In order to simply access your data in your {project_name} extension, you can obtain the link:https://jakarta.ee/specifications/persistence/3.2/apidocs/jakarta.persistence/jakarta/persistence/entitymanager[EntityManager] for the additional datasources used in these quickstarts.
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It helps you to interact with entities specified for your datasource, as it provides some kind of bridge between your JPA entities and the database.
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You can use the new entity manager (for the `user-store` datasource) as follows:
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[source,java]
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----
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EntityManager em = session.getProvider(JpaConnectionProvider.class, "user-store").getEntityManager();
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var user = em.find(org.your.extension.UserEntity.class, 123L);
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----
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