com.google.protobuf.nano

Class ExtendableMessageNano<M extends ExtendableMessageNano<M>>

java.lang.Object

com.google.protobuf.nano.MessageNano

com.google.protobuf.nano.ExtendableMessageNano<M>

public abstract class ExtendableMessageNano<M extends ExtendableMessageNano<M>>
extends MessageNano

Base class of those Protocol Buffer messages that need to store unknown fields, such as extensions.

Field Summary

Fields

Modifier and Type	Field and Description
protected FieldArray	unknownFieldData A container for fields unknown to the message, including extensions.

Fields inherited from class com.google.protobuf.nano.MessageNano

cachedSize

Constructor Summary

Constructors

Constructor and Description
ExtendableMessageNano()

Method Summary

Modifier and Type	Method and Description
M	clone() Provides support for cloning.
protected int	computeSerializedSize() Computes the number of bytes required to encode this message.
<T> T	getExtension(Extension<M,T> extension) Gets the value stored in the specified extension of this message.
boolean	hasExtension(Extension<M,?> extension) Checks if there is a value stored for the specified extension in this message.
<T> M	setExtension(Extension<M,T> extension, T value) Sets the value of the specified extension of this message.
protected boolean	storeUnknownField(CodedInputByteBufferNano input, int tag) Stores the binary data of an unknown field.
void	writeTo(CodedOutputByteBufferNano output) Serializes the message and writes it to output.

Methods inherited from class com.google.protobuf.nano.MessageNano

getCachedSize, getSerializedSize, mergeFrom, mergeFrom, mergeFrom, messageNanoEquals, toByteArray, toByteArray, toString

Methods inherited from class java.lang.Object

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

Field Detail

unknownFieldData

protected FieldArray unknownFieldData

A container for fields unknown to the message, including extensions. Extension fields can can be accessed through the getExtension(com.google.protobuf.nano.Extension<M, T>) and setExtension(com.google.protobuf.nano.Extension<M, T>, T) methods.

Constructor Detail

ExtendableMessageNano

public ExtendableMessageNano()

Method Detail

computeSerializedSize

protected int computeSerializedSize()

Description copied from class: MessageNano

Computes the number of bytes required to encode this message. This does not update the cached size.

Overrides:

computeSerializedSize in class MessageNano

writeTo

public void writeTo(CodedOutputByteBufferNano output)
             throws IOException

Description copied from class: MessageNano

Serializes the message and writes it to output.

Overrides:

writeTo in class MessageNano

Parameters:

output - the output to receive the serialized form.

Throws:

IOException - if an error occurred writing to output.

hasExtension

public final boolean hasExtension(Extension<M,?> extension)

Checks if there is a value stored for the specified extension in this message.

getExtension

public final <T> T getExtension(Extension<M,T> extension)

Gets the value stored in the specified extension of this message.

setExtension

public final <T> M setExtension(Extension<M,T> extension,
                                T value)

Sets the value of the specified extension of this message.

storeUnknownField

protected final boolean storeUnknownField(CodedInputByteBufferNano input,
                                          int tag)
                                   throws IOException

Stores the binary data of an unknown field.

Generated messages will call this for unknown fields if the store_unknown_fields option is on.

Note that the tag might be a end-group tag (rather than the start of an unknown field) in which case we do not want to add an unknown field entry.

Parameters:

input - the input buffer.

tag - the tag of the field.

Returns:

true unless the tag is an end-group tag.

Throws:

IOException

clone

public M clone()
        throws CloneNotSupportedException

Description copied from class: MessageNano

Provides support for cloning. This only works if you specify the generate_clone method.

Overrides:

clone in class MessageNano

Throws:

CloneNotSupportedException