=== Hibernate Configuration

The Hibernate persistence API is already pre-configured out of the box.  It is rare to have to modify the configuration for it.
To configure Hibernate, you need to edit the _keycloak-server.json_ file.  If you are running
in standalone mode, this file is in the _.../standalone/configuration_ directory.  If you are running in domain mode
this file will live in the _.../domain/servers/{server name}/configuration_ directory.

.Hibernate JPA Config
[source,json]
----
"connectionsJpa": {
    "default": {
        "dataSource": "java:jboss/datasources/KeycloakDS",
        "databaseSchema": "update"
    }
},
----

Possible configuration options are:

dataSource::
  JNDI name of the dataSource

jta::
  boolean property to specify if datasource is JTA capable

driverDialect::
  Value of database dialect.
  In most cases you don't need to specify this property as dialect will be autodetected by Hibernate.

databaseSchema::
  Specify if schema should be updated or validated.
  Valid values are +update+ (default) and +validate+.  The +update+ value will set up or update
  the table definitions that {{book.project.name}} needs.  +validate+ just makes sure that the database has
  the appropriate table definitions set up.

showSql::
  Specify whether Hibernate should show all SQL commands in the console (false by default).  This is very verbose!

formatSql::
  Specify whether Hibernate should format SQL commands (true by default)

globalStatsInterval::
  Will log global statistics from Hibernate about executed DB queries and other things.
  Statistics are always reported to server log at specified interval (in seconds) and are cleared after each report.

schema::
  Specify the database schema to use

NOTE:  All these configuration switches and more are described in the link:{{book.jpa.admindoc.link}}[the Hibernate chapter]
       of {{book.jpa.admindoc.name}}.