Package org.dellroad.stuff.schema

Class AbstractSchemaUpdate<T>

java.lang.Object

org.dellroad.stuff.schema.AbstractSchemaUpdate<T>

Type Parameters:

T - database transaction type

All Implemented Interfaces:

SchemaUpdate<T>

Direct Known Subclasses:

AbstractSpringSchemaUpdate

public abstract class AbstractSchemaUpdate<T>
extends Object
implements SchemaUpdate<T>

Support superclass for SchemaUpdate implementations with standard bean property implementations.

Constructor Summary

Constructors

Constructor	Description
AbstractSchemaUpdate()

Method Summary

Modifier and Type	Method	Description
String	getName()	Get the unique name of this update.
Set<SchemaUpdate<T>>	getRequiredPredecessors()	Get the the other updates (if any) that must be applied before this update may be applied.
boolean	isSingleAction()	Determine whether, if this instance contains multiple individual actions, should they be applied in a single transaction and recorded as a single update.
void	setName(String name)
void	setRequiredPredecessors(Set<SchemaUpdate<T>> requiredPredecessors)
void	setSingleAction(boolean singleAction)
String	toString()

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.dellroad.stuff.schema.SchemaUpdate

getDatabaseActions

Constructor Details

AbstractSchemaUpdate

public AbstractSchemaUpdate()

Method Details

getName

public String getName()

Description copied from interface: SchemaUpdate

Get the unique name of this update. This name must be unique among all updates ever applied to the database and must never change once this update has been applied to any database.

Specified by:

getName in interface SchemaUpdate<T>

Returns:

the name of this update; must not be the empty string

setName

public void setName(String name)

getRequiredPredecessors

public Set<SchemaUpdate<T>> getRequiredPredecessors()

Description copied from interface: SchemaUpdate

Get the the other updates (if any) that must be applied before this update may be applied.

Specified by:

getRequiredPredecessors in interface SchemaUpdate<T>

Returns:

set of zero or more other updates

See Also:

• SchemaUpdate.getName()

setRequiredPredecessors

public void setRequiredPredecessors(Set<SchemaUpdate<T>> requiredPredecessors)

isSingleAction

public boolean isSingleAction()

Description copied from interface: SchemaUpdate

Determine whether, if this instance contains multiple individual actions, should they be applied in a single transaction and recorded as a single update. Normally this is false. If true, partially completed updates can result if one of the action fails.

Specified by:

isSingleAction in interface SchemaUpdate<T>

Returns:

whether to execute this update atomically

setSingleAction

public void setSingleAction(boolean singleAction)

toString

public String toString()

Overrides:

toString in class Object