io.ebean.config.dbplatform

Class SequenceIdGenerator

java.lang.Object

io.ebean.config.dbplatform.SequenceIdGenerator

All Implemented Interfaces:

PlatformIdGenerator

Direct Known Subclasses:

SequenceBatchIdGenerator, SequenceStepIdGenerator

public abstract class SequenceIdGenerator
extends Object
implements PlatformIdGenerator

Database sequence based IdGenerator.

Field Summary

Fields inherited from interface io.ebean.config.dbplatform.PlatformIdGenerator

AUTO_UUID

Method Summary

Modifier and Type	Method and Description
String	getName() Returns the sequence name.
abstract String	getSql(int batchSize)
boolean	isDbSequence() Returns true.
Object	nextId(Transaction t) Return the next Id.
void	preAllocateIds(int requestSize) If allocateSize is large load some sequences in a background thread.

Methods inherited from class java.lang.Object

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

Method Detail

getSql

public abstract String getSql(int batchSize)

getName

public String getName()

Returns the sequence name.

Specified by:

getName in interface PlatformIdGenerator

isDbSequence

public boolean isDbSequence()

Returns true.

Specified by:

isDbSequence in interface PlatformIdGenerator

preAllocateIds

public void preAllocateIds(int requestSize)

If allocateSize is large load some sequences in a background thread.

For example, when inserting a bean with a cascade on a OneToMany with many beans Ebean can call this to ensure .

Specified by:

preAllocateIds in interface PlatformIdGenerator

nextId

public Object nextId(Transaction t)

Return the next Id.

If a Transaction has been passed in use the Connection from it.

Specified by:

nextId in interface PlatformIdGenerator