Package com.googlecode.objectify.impl

Class WriteEngine

java.lang.Object

com.googlecode.objectify.impl.WriteEngine

public class WriteEngine
extends Object

This is the master logic for saving and deleting entities from the datastore. It provides the fundamental operations that enable the rest of the API. One of these engines is created for every operation; upon completion, it is thrown away.

Author:

Jeff Schnitzer <[email protected]>

Field Summary

Fields

Modifier and Type	Field	Description
protected final AsyncDatastoreReaderWriter	datastore
protected final Deferrer	deferrer
protected final ObjectifyImpl	ofy
protected final Session	session

Constructor Summary

Constructors

Constructor	Description
WriteEngine(ObjectifyImpl ofy, AsyncDatastoreReaderWriter datastore, Session session, Deferrer deferrer)

Method Summary

Modifier and Type	Method	Description
Result<Void>	delete(Iterable<com.google.cloud.datastore.Key> keys)	The fundamental delete() operation.
<E> Result<Map<Key<E>,E>>	save(Iterable<? extends E> entities)	The fundamental put() operation.

Methods inherited from class java.lang.Object

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

Field Details

ofy

protected final ObjectifyImpl ofy

datastore

protected final AsyncDatastoreReaderWriter datastore

session

protected final Session session

deferrer

protected final Deferrer deferrer

Constructor Details

WriteEngine

public WriteEngine(ObjectifyImpl ofy,
 AsyncDatastoreReaderWriter datastore,
 Session session,
 Deferrer deferrer)

Method Details

save

public <E> Result<Map<Key<E>,E>> save(Iterable<? extends E> entities)

The fundamental put() operation.

delete

public Result<Void> delete(Iterable<com.google.cloud.datastore.Key> keys)

The fundamental delete() operation.