Package com.google.protobuf
Class GeneratedMessage.GeneratedExtension<ContainingType extends Message,Type>
- java.lang.Object
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- com.google.protobuf.ExtensionLite<ContainingType,Type>
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- com.google.protobuf.Extension<ContainingType,Type>
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- com.google.protobuf.GeneratedMessage.GeneratedExtension<ContainingType,Type>
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- Enclosing class:
- GeneratedMessage
public static class GeneratedMessage.GeneratedExtension<ContainingType extends Message,Type> extends Extension<ContainingType,Type>
Type used to represent generated extensions. The protocol compiler generates a static singleton instance of this class for each extension.For example, imagine you have the
.proto
file:option java_class = "MyProto"; message Foo { extensions 1000 to max; } extend Foo { optional int32 bar; }
Then,
MyProto.Foo.bar
has typeGeneratedExtension<MyProto.Foo, Integer>
.In general, users should ignore the details of this type, and simply use these static singletons as parameters to the extension accessors defined in
GeneratedMessage.ExtendableMessage
andGeneratedMessage.ExtendableBuilder
.
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Nested Class Summary
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Nested classes/interfaces inherited from class com.google.protobuf.Extension
Extension.ExtensionType, Extension.MessageType
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description protected java.lang.Object
fromReflectionType(java.lang.Object value)
Convert from the type used by the reflection accessors to the type used by native accessors.Type
getDefaultValue()
Returns the default value of the extension field.Descriptors.FieldDescriptor
getDescriptor()
Returns the descriptor of the extension.protected Extension.ExtensionType
getExtensionType()
WireFormat.FieldType
getLiteType()
Returns the type of the field.Message
getMessageDefaultInstance()
If the extension is an embedded message or group, returns the default instance of the message.int
getNumber()
Returns the field number of the extension.void
internalInit(Descriptors.FieldDescriptor descriptor)
For use by generated code only.boolean
isRepeated()
Returns whether it is a repeated field.protected java.lang.Object
singularFromReflectionType(java.lang.Object value)
LikefromReflectionType(Object)
, but if the type is a repeated type, this converts a single element.protected java.lang.Object
singularToReflectionType(java.lang.Object value)
LiketoReflectionType(Object)
, but if the type is a repeated type, this converts a single element.protected java.lang.Object
toReflectionType(java.lang.Object value)
Convert from the type used by the native accessors to the type used by reflection accessors.-
Methods inherited from class com.google.protobuf.Extension
getMessageType
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Method Detail
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internalInit
public void internalInit(Descriptors.FieldDescriptor descriptor)
For use by generated code only.
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getDescriptor
public Descriptors.FieldDescriptor getDescriptor()
Description copied from class:Extension
Returns the descriptor of the extension.- Specified by:
getDescriptor
in classExtension<ContainingType extends Message,Type>
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getMessageDefaultInstance
public Message getMessageDefaultInstance()
If the extension is an embedded message or group, returns the default instance of the message.- Specified by:
getMessageDefaultInstance
in classExtension<ContainingType extends Message,Type>
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getExtensionType
protected Extension.ExtensionType getExtensionType()
- Specified by:
getExtensionType
in classExtension<ContainingType extends Message,Type>
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fromReflectionType
protected java.lang.Object fromReflectionType(java.lang.Object value)
Convert from the type used by the reflection accessors to the type used by native accessors. E.g., for enums, the reflection accessors use EnumValueDescriptors but the native accessors use the generated enum type.- Specified by:
fromReflectionType
in classExtension<ContainingType extends Message,Type>
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singularFromReflectionType
protected java.lang.Object singularFromReflectionType(java.lang.Object value)
LikefromReflectionType(Object)
, but if the type is a repeated type, this converts a single element.- Specified by:
singularFromReflectionType
in classExtension<ContainingType extends Message,Type>
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toReflectionType
protected java.lang.Object toReflectionType(java.lang.Object value)
Convert from the type used by the native accessors to the type used by reflection accessors. E.g., for enums, the reflection accessors use EnumValueDescriptors but the native accessors use the generated enum type.- Specified by:
toReflectionType
in classExtension<ContainingType extends Message,Type>
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singularToReflectionType
protected java.lang.Object singularToReflectionType(java.lang.Object value)
LiketoReflectionType(Object)
, but if the type is a repeated type, this converts a single element.- Specified by:
singularToReflectionType
in classExtension<ContainingType extends Message,Type>
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getNumber
public int getNumber()
Description copied from class:ExtensionLite
Returns the field number of the extension.- Specified by:
getNumber
in classExtensionLite<ContainingType extends Message,Type>
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getLiteType
public WireFormat.FieldType getLiteType()
Description copied from class:ExtensionLite
Returns the type of the field.- Specified by:
getLiteType
in classExtensionLite<ContainingType extends Message,Type>
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isRepeated
public boolean isRepeated()
Description copied from class:ExtensionLite
Returns whether it is a repeated field.- Specified by:
isRepeated
in classExtensionLite<ContainingType extends Message,Type>
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getDefaultValue
public Type getDefaultValue()
Description copied from class:ExtensionLite
Returns the default value of the extension field.- Specified by:
getDefaultValue
in classExtensionLite<ContainingType extends Message,Type>
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