Package org.dspace.storage.rdbms

Class RegistryUpdater

java.lang.Object
org.dspace.storage.rdbms.RegistryUpdater
All Implemented Interfaces:
org.flywaydb.core.api.callback.Callback
public class RegistryUpdater extends Object implements org.flywaydb.core.api.callback.Callback
This is a FlywayCallback class which automatically updates the Metadata Schema Registry and Bitstream Formats Registries AFTER all Database migrations occur.

The reason this runs AFTER all migrations is that the RegistryLoader and MetadataImporter now depend on Hibernate and Hibernate cannot be initialized until the Database is fully migrated.

If a migration needs to use on one or more registry values, there are two options:

  • Create/insert those registry values in the migration itself (via SQL or similar).
  • Alternatively, first check for the existence of the MetadataSchemaRegistry (or similar) before running the migration logic. If the table or fields do not yet exist, you might be able to skip the migration logic entirely. See "DatabaseUtils.tableExists()" and similar methods.
Author:
Tim Donohue

  • Constructor Summary

    Constructors
    Constructor
    Description
    RegistryUpdater()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    boolean
    canHandleInTransaction(org.flywaydb.core.api.callback.Event event, org.flywaydb.core.api.callback.Context context)
    Whether event can be handled in a transaction or whether it must be handle outside of transaction.
    String
    getCallbackName()
    The callback name, Flyway will use this to sort the callbacks alphabetically before executing them
    void
    handle(org.flywaydb.core.api.callback.Event event, org.flywaydb.core.api.callback.Context context)
    What to run when the callback is triggered.
    boolean
    supports(org.flywaydb.core.api.callback.Event event, org.flywaydb.core.api.callback.Context context)
    Events supported by this callback.

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Constructor Details

    • RegistryUpdater

      public RegistryUpdater()

  • Method Details

    • getCallbackName

      public String getCallbackName()
      The callback name, Flyway will use this to sort the callbacks alphabetically before executing them
      Specified by:
      getCallbackName in interface org.flywaydb.core.api.callback.Callback
      Returns:
      The callback name

    • supports

      public boolean supports(org.flywaydb.core.api.callback.Event event, org.flywaydb.core.api.callback.Context context)
      Events supported by this callback.
      Specified by:
      supports in interface org.flywaydb.core.api.callback.Callback
      Parameters:
      event - Flyway event
      context - Flyway context
      Returns:
      true if AFTER_MIGRATE event

    • canHandleInTransaction

      public boolean canHandleInTransaction(org.flywaydb.core.api.callback.Event event, org.flywaydb.core.api.callback.Context context)
      Whether event can be handled in a transaction or whether it must be handle outside of transaction.
      Specified by:
      canHandleInTransaction in interface org.flywaydb.core.api.callback.Callback
      Parameters:
      event - Flyway event
      context - Flyway context
      Returns:
      true

    • handle

      public void handle(org.flywaydb.core.api.callback.Event event, org.flywaydb.core.api.callback.Context context)
      What to run when the callback is triggered.
      Specified by:
      handle in interface org.flywaydb.core.api.callback.Callback
      Parameters:
      event - Flyway event
      context - Flyway context