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

Field Summary

Fields

Modifier and Type	Field	Description
protected com.google.appengine.api.datastore.AsyncDatastoreService	ads
protected Deferrer	deferrer
protected ObjectifyImpl<?>	ofy
protected Session	session

Constructor Summary

Constructors

Constructor	Description
WriteEngine(ObjectifyImpl<?> ofy, com.google.appengine.api.datastore.AsyncDatastoreService ads, Session session, Deferrer deferrer)

Method Summary

Modifier and Type	Method	Description
Result<Void>	delete(Iterable<com.google.appengine.api.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 Detail

ofy

protected final ObjectifyImpl<?> ofy

ads

protected final com.google.appengine.api.datastore.AsyncDatastoreService ads

session

protected final Session session

deferrer

protected final Deferrer deferrer

Constructor Detail

WriteEngine

public WriteEngine(ObjectifyImpl<?> ofy,
                   com.google.appengine.api.datastore.AsyncDatastoreService ads,
                   Session session,
                   Deferrer deferrer)

Method Detail

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.appengine.api.datastore.Key> keys)

The fundamental delete() operation.