Class Extension<ContainingType,Type> (3.19.4)
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public abstract class Extension<ContainingType , Type > extends ExtensionLite<ContainingType , Type >
Interface that generated extensions implement.
Type Parameters
Name Description
ContainingType
Type
Constructors
Extension()
Methods
fromReflectionType(Object value)
protected abstract Object fromReflectionType ( Object value )
Parameter
Name Description
valueObject
Returns
Type Description
Object
getDescriptor()
public abstract Descriptors . FieldDescriptor getDescriptor ()
Returns the descriptor of the extension.
getExtensionType()
protected abstract Extension . ExtensionType getExtensionType ()
getMessageDefaultInstance()
public abstract Message getMessageDefaultInstance ()
Returns the default instance of the extension field, if it's a message extension. Overridden to return Message instead of MessageLite .
Overrides
getMessageType()
public Extension . MessageType getMessageType ()
If the extension is a message extension (i.e., getLiteType() == MESSAGE), returns the type of
the message, otherwise undefined.
singularFromReflectionType(Object value)
protected abstract Object singularFromReflectionType ( Object value )
Parameter
Name Description
valueObject
Returns
Type Description
Object
singularToReflectionType(Object value)
protected abstract Object singularToReflectionType ( Object value )
Parameter
Name Description
valueObject
Returns
Type Description
Object
toReflectionType(Object value)
protected abstract Object toReflectionType ( Object value )
Parameter
Name Description
valueObject
Returns
Type Description
Object
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Last updated 2025-08-07 UTC.
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