AbstractDropNotNullDataMigration (XWiki Platform - Old Core 15.0 API)

java.lang.Object
- com.xpn.xwiki.store.migration.hibernate.AbstractHibernateDataMigration
- - com.xpn.xwiki.store.migration.hibernate.AbstractDropNotNullDataMigration

All Implemented Interfaces:

DataMigration, HibernateDataMigration

Direct Known Subclasses:

R911000XWIKI14889DataMigration, R911001XWIKI14895DataMigration
```
public abstract class AbstractDropNotNullDataMigration
extends AbstractHibernateDataMigration
```
Remove a non-null constraint from a colomn.

Since:

9.11RC1

Version:

$Id: 168d21fc9975581554d5c9968b9de32734c5a6ff $

- Field Summary
  - Fields inherited from class com.xpn.xwiki.store.migration.hibernate.AbstractHibernateDataMigration
    componentManager, manager
- Constructor Summary
  
  Constructors
  Constructor Description
  
  AbstractDropNotNullDataMigration(Class<?> table, String property)
- Method Summary
  
  All Methods Instance Methods Concrete Methods
  Modifier and Type Method Description
  
  String getLiquibaseChangeLog()
  
  protected void hibernateMigrate()
  Execute the migration itself.
  - Methods inherited from class com.xpn.xwiki.store.migration.hibernate.AbstractHibernateDataMigration
    getCurrentDBVersion, getName, getPreHibernateLiquibaseChangeLog, getStore, getXWikiContext, migrate, shouldExecute
  - Methods inherited from class java.lang.Object
    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
  - Methods inherited from interface com.xpn.xwiki.store.migration.DataMigration
    getDescription, getVersion

- Constructor Detail
  - AbstractDropNotNullDataMigration
```
public AbstractDropNotNullDataMigration(Class<?> table,
                                        String property)
```
    Parameters:
    
    table - the Class corresponding to the table from which to remove the non-null constraint
    
    property - the name of the hibernate property from which to remove the non-null constraint
- Method Detail
  - getLiquibaseChangeLog
```
public String getLiquibaseChangeLog()
                             throws DataMigrationException
```
    Specified by:
    
    getLiquibaseChangeLog in interface HibernateDataMigration
    
    Overrides:
    
    getLiquibaseChangeLog in class AbstractHibernateDataMigration
    
    Returns:
    
    some liquibase changelogs for refactoring the database after the hibernate schema update has been processed
    
    Throws:
    
    DataMigrationException - on error
  - hibernateMigrate
```
protected void hibernateMigrate()
                         throws DataMigrationException,
                                XWikiException
```
    Description copied from class: AbstractHibernateDataMigration
    
    Execute the migration itself.
    
    Specified by:
    
    hibernateMigrate in class AbstractHibernateDataMigration
    
    Throws:
    
    DataMigrationException - on migration error.
    
    XWikiException - on error from the store.