com.googlecode.objectify.impl.translate

Class ProjectionSafeTranslator<P,D>

java.lang.Object

com.googlecode.objectify.impl.translate.NullSafeTranslator<P,D>

com.googlecode.objectify.impl.translate.ProjectionSafeTranslator<P,D>

All Implemented Interfaces:

Translator<P,D>

Direct Known Subclasses:

ValueTranslator

public abstract class ProjectionSafeTranslator<P,D>
extends NullSafeTranslator<P,D>

Watches out for RawValue and performs the necessary conversion if we get one. This will happen during projection queries.

Author:

Jeff Schnitzer

Constructor Summary

Constructors

Constructor and Description
ProjectionSafeTranslator(Class<? extends D> projectionClass)

Method Summary

Modifier and Type	Method and Description
protected P	loadSafe(D value, LoadContext ctx, Path path) Implement this, returning a proper translated value
protected abstract P	loadSafe2(D value, LoadContext ctx, Path path) Decode from a property value as stored in the datastore to a type that will be stored in a pojo.

Methods inherited from class com.googlecode.objectify.impl.translate.NullSafeTranslator

load, save, saveSafe

Methods inherited from class java.lang.Object

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

Constructor Detail

ProjectionSafeTranslator

public ProjectionSafeTranslator(Class<? extends D> projectionClass)

Method Detail

loadSafe

protected final P loadSafe(D value,
                           LoadContext ctx,
                           Path path)
                    throws SkipException

Description copied from class: NullSafeTranslator

Implement this, returning a proper translated value

Specified by:

loadSafe in class NullSafeTranslator<P,D>

Parameters:

value - will never be null

Throws:

SkipException

loadSafe2

protected abstract P loadSafe2(D value,
                               LoadContext ctx,
                               Path path)
                        throws SkipException

Decode from a property value as stored in the datastore to a type that will be stored in a pojo.

Parameters:

value - will not be null and will not be RawValue

Returns:

the format which should be stored in the pojo; a null means store a literal null!

Throws:

SkipException - if this field subtree should be skipped