RegistryUpdater (DSpace Kernel :: API and Implementation 7.1.1 API)

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

All Methods Instance Methods Concrete Methods
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.
`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 Detail
  - RegistryUpdater
```
public RegistryUpdater()
```
- Method Detail
  - 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