com.googlecode.objectify.impl

Class NullProperty

java.lang.Object

com.googlecode.objectify.impl.AbstractProperty

com.googlecode.objectify.impl.NullProperty

All Implemented Interfaces:

Property

public class NullProperty
extends AbstractProperty

Property to use with translators when there isn't a relevant property; for example, when making a filterable or when creating translator for the root entity. Don't construct it, just use the INSTANCE.

Field Summary

Fields

Modifier and Type	Field and Description
static NullProperty	INSTANCE Always just use this instance

Method Summary

Methods

Modifier and Type	Method and Description
Object	get(Object pojo) Get the value of the property (field) if possible, or null if not possible (method)
Boolean	getIndexInstruction(Object onPojo) Since we are never saved this is never called
String	getName() Get the primary name associated with this property
Type	getType() Get the real generic type of the field
boolean	hasIgnoreSaveConditions() Never saved, so never has conditions
boolean	isSaved(Object onPojo) Never saved
void	set(Object pojo, Object value) Actually set the property (field or method) on an object
String	toString()

Methods inherited from class com.googlecode.objectify.impl.AbstractProperty

getAnnotation, getLoadNames, shouldLoad

Methods inherited from class java.lang.Object

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

Field Detail

INSTANCE

public static final NullProperty INSTANCE

Always just use this instance

Method Detail

getName

public String getName()

Description copied from interface: Property

Get the primary name associated with this property

Specified by:

getName in interface Property

Overrides:

getName in class AbstractProperty

toString

public String toString()

Overrides:

toString in class Object

getType

public Type getType()

Description copied from interface: Property

Get the real generic type of the field

set

public void set(Object pojo,
       Object value)

Description copied from interface: Property

Actually set the property (field or method) on an object

get

public Object get(Object pojo)

Description copied from interface: Property

Get the value of the property (field) if possible, or null if not possible (method)

isSaved

public boolean isSaved(Object onPojo)

Never saved

Returns:

true if this field should be saved, false if not

getIndexInstruction

public Boolean getIndexInstruction(Object onPojo)

Since we are never saved this is never called

Returns:

true if this field should be indexed, false if it should be unindexed, null is "no information, continue with defaults".

hasIgnoreSaveConditions

public boolean hasIgnoreSaveConditions()

Never saved, so never has conditions

Returns:

true if the property has @IgnoreSave with conditions; there are some cases where this won't work (ie in embedded collections) so we need to throw an exception at registration time.