com.google.protobuf

Class GeneratedMessage

java.lang.Object

com.google.protobuf.AbstractMessageLite

com.google.protobuf.AbstractMessage

com.google.protobuf.GeneratedMessage

All Implemented Interfaces:

Message, MessageLite, MessageLiteOrBuilder, MessageOrBuilder, Serializable

Direct Known Subclasses:

GeneratedMessage.ExtendableMessage

public abstract class GeneratedMessage
extends AbstractMessage
implements Serializable

All generated protocol message classes extend this class. This class implements most of the Message and Builder interfaces using Java reflection. Users can ignore this class and pretend that generated messages implement the Message interface directly.

Author:

kenton@google.com Kenton Varda

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	GeneratedMessage.Builder<BuilderType extends GeneratedMessage.Builder<BuilderType>>
protected static interface	GeneratedMessage.BuilderParent TODO(xiaofeng): remove this after b/29368482 is fixed.
static class	GeneratedMessage.ExtendableBuilder<MessageType extends GeneratedMessage.ExtendableMessage,BuilderType extends GeneratedMessage.ExtendableBuilder<MessageType,BuilderType>> Generated message builders for message types that contain extension ranges subclass this.
static class	GeneratedMessage.ExtendableMessage<MessageType extends GeneratedMessage.ExtendableMessage> Generated message classes for message types that contain extension ranges subclass this.
static interface	GeneratedMessage.ExtendableMessageOrBuilder<MessageType extends GeneratedMessage.ExtendableMessage>
static class	GeneratedMessage.FieldAccessorTable Users should ignore this class.
static class	GeneratedMessage.GeneratedExtension<ContainingType extends Message,Type> Type used to represent generated extensions.

Nested classes/interfaces inherited from class com.google.protobuf.AbstractMessageLite

AbstractMessageLite.InternalOneOfEnum

Field Summary

Fields

Modifier and Type	Field and Description
protected static boolean	alwaysUseFieldBuilders For testing.
protected UnknownFieldSet	unknownFields For use by generated code only.

Fields inherited from class com.google.protobuf.AbstractMessage

memoizedSize

Fields inherited from class com.google.protobuf.AbstractMessageLite

memoizedHashCode

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	GeneratedMessage()
protected	GeneratedMessage(GeneratedMessage.Builder<?> builder)

Method Summary

Modifier and Type	Method and Description
protected static int	computeStringSize(int fieldNumber, Object value)
protected static int	computeStringSizeNoTag(Object value)
Map<Descriptors.FieldDescriptor,Object>	getAllFields() Returns a collection of all the fields in this message which are set and their corresponding values.
Descriptors.Descriptor	getDescriptorForType() Get the message's type's descriptor.
Object	getField(Descriptors.FieldDescriptor field) Obtains the value of the given field, or the default value if it is not set.
Descriptors.FieldDescriptor	getOneofFieldDescriptor(Descriptors.OneofDescriptor oneof) TODO(jieluo): Clear it when all subclasses have implemented this method.
Parser<? extends GeneratedMessage>	getParserForType() Gets the parser for a message of the same type as this message.
Object	getRepeatedField(Descriptors.FieldDescriptor field, int index) Gets an element of a repeated field.
int	getRepeatedFieldCount(Descriptors.FieldDescriptor field) Gets the number of elements of a repeated field.
int	getSerializedSize() Get the number of bytes required to encode this message.
UnknownFieldSet	getUnknownFields() Get the UnknownFieldSet for this message.
boolean	hasField(Descriptors.FieldDescriptor field) Returns true if the given field is set.
boolean	hasOneof(Descriptors.OneofDescriptor oneof) TODO(jieluo): Clear it when all subclasses have implemented this method.
protected abstract GeneratedMessage.FieldAccessorTable	internalGetFieldAccessorTable() Get the FieldAccessorTable for this type.
protected MapField	internalGetMapField(int fieldNumber) Gets the map field with the given field number.
boolean	isInitialized() Returns true if all required fields in the message and all embedded messages are set, false otherwise.
protected void	makeExtensionsImmutable() Used by parsing constructors in generated classes.
protected Message.Builder	newBuilderForType(AbstractMessage.BuilderParent parent) Create a nested builder.
protected abstract Message.Builder	newBuilderForType(GeneratedMessage.BuilderParent parent) TODO(xiaofeng): remove this together with GeneratedMessage.BuilderParent.
static <ContainingType extends Message,Type> GeneratedMessage.GeneratedExtension<ContainingType,Type>	newFileScopedGeneratedExtension(Class singularType, Message defaultInstance) For use by generated code only.
static <ContainingType extends Message,Type> GeneratedMessage.GeneratedExtension<ContainingType,Type>	newFileScopedGeneratedExtension(Class singularType, Message defaultInstance, String descriptorOuterClass, String extensionName) Used in proto1 generated code only.
static <ContainingType extends Message,Type> GeneratedMessage.GeneratedExtension<ContainingType,Type>	newMessageScopedGeneratedExtension(Message scope, int descriptorIndex, Class singularType, Message defaultInstance) For use by generated code only.
static <ContainingType extends Message,Type> GeneratedMessage.GeneratedExtension<ContainingType,Type>	newMessageScopedGeneratedExtension(Message scope, String name, Class singularType, Message defaultInstance) Used in proto1 generated code only.
protected static <M extends Message> M	parseDelimitedWithIOException(Parser<M> parser, InputStream input)
protected static <M extends Message> M	parseDelimitedWithIOException(Parser<M> parser, InputStream input, ExtensionRegistryLite extensions)
protected boolean	parseUnknownField(CodedInputStream input, UnknownFieldSet.Builder unknownFields, ExtensionRegistryLite extensionRegistry, int tag) Called by subclasses to parse an unknown field.
protected static <M extends Message> M	parseWithIOException(Parser<M> parser, CodedInputStream input)
protected static <M extends Message> M	parseWithIOException(Parser<M> parser, CodedInputStream input, ExtensionRegistryLite extensions)
protected static <M extends Message> M	parseWithIOException(Parser<M> parser, InputStream input)
protected static <M extends Message> M	parseWithIOException(Parser<M> parser, InputStream input, ExtensionRegistryLite extensions)
protected Object	writeReplace() Replaces this object in the output stream with a serialized form.
protected static void	writeString(CodedOutputStream output, int fieldNumber, Object value)
protected static void	writeStringNoTag(CodedOutputStream output, Object value)
void	writeTo(CodedOutputStream output) Serializes the message and writes it to output.

Methods inherited from class com.google.protobuf.AbstractMessage

equals, findInitializationErrors, getInitializationErrorString, hashBoolean, hashCode, hashEnum, hashEnumList, hashFields, hashLong, toString

Methods inherited from class com.google.protobuf.AbstractMessageLite

addAll, addAll, checkByteStringIsUtf8, toByteArray, toByteString, writeDelimitedTo, writeTo

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface com.google.protobuf.Message

newBuilderForType, toBuilder

Methods inherited from interface com.google.protobuf.MessageLite

toByteArray, toByteString, writeDelimitedTo, writeTo

Methods inherited from interface com.google.protobuf.MessageOrBuilder

getDefaultInstanceForType

Field Detail

alwaysUseFieldBuilders

protected static boolean alwaysUseFieldBuilders

For testing. Allows a test to disable the optimization that avoids using field builders for nested messages until they are requested. By disabling this optimization, existing tests can be reused to test the field builders.

unknownFields

protected UnknownFieldSet unknownFields

For use by generated code only.

Constructor Detail

GeneratedMessage

protected GeneratedMessage()

GeneratedMessage

protected GeneratedMessage(GeneratedMessage.Builder<?> builder)

Method Detail

getParserForType

public Parser<? extends GeneratedMessage> getParserForType()

Description copied from interface: MessageLite

Gets the parser for a message of the same type as this message.

Specified by:

getParserForType in interface Message

Specified by:

getParserForType in interface MessageLite

internalGetFieldAccessorTable

protected abstract GeneratedMessage.FieldAccessorTable internalGetFieldAccessorTable()

Get the FieldAccessorTable for this type. We can't have the message class pass this in to the constructor because of bootstrapping trouble with DescriptorProtos.

getDescriptorForType

public Descriptors.Descriptor getDescriptorForType()

Description copied from interface: MessageOrBuilder

Get the message's type's descriptor. This differs from the getDescriptor() method of generated message classes in that this method is an abstract method of the Message interface whereas getDescriptor() is a static method of a specific class. They return the same thing.

Specified by:

getDescriptorForType in interface MessageOrBuilder

isInitialized

public boolean isInitialized()

Description copied from interface: MessageLiteOrBuilder

Returns true if all required fields in the message and all embedded messages are set, false otherwise.

See also: MessageOrBuilder.getInitializationErrorString()

Specified by:

isInitialized in interface MessageLiteOrBuilder

Overrides:

isInitialized in class AbstractMessage

getAllFields

public Map<Descriptors.FieldDescriptor,Object> getAllFields()

Description copied from interface: MessageOrBuilder

Returns a collection of all the fields in this message which are set and their corresponding values. A singular ("required" or "optional") field is set iff hasField() returns true for that field. A "repeated" field is set iff getRepeatedFieldCount() is greater than zero. The values are exactly what would be returned by calling MessageOrBuilder.getField(Descriptors.FieldDescriptor) for each field. The map is guaranteed to be a sorted map, so iterating over it will return fields in order by field number.
If this is for a builder, the returned map may or may not reflect future changes to the builder. Either way, the returned map is itself unmodifiable.

Specified by:

getAllFields in interface MessageOrBuilder

hasOneof

public boolean hasOneof(Descriptors.OneofDescriptor oneof)

Description copied from class: AbstractMessage

TODO(jieluo): Clear it when all subclasses have implemented this method.

Specified by:

hasOneof in interface MessageOrBuilder

Overrides:

hasOneof in class AbstractMessage

getOneofFieldDescriptor

public Descriptors.FieldDescriptor getOneofFieldDescriptor(Descriptors.OneofDescriptor oneof)

Description copied from class: AbstractMessage

TODO(jieluo): Clear it when all subclasses have implemented this method.

Specified by:

getOneofFieldDescriptor in interface MessageOrBuilder

Overrides:

getOneofFieldDescriptor in class AbstractMessage

hasField

public boolean hasField(Descriptors.FieldDescriptor field)

Description copied from interface: MessageOrBuilder

Returns true if the given field is set. This is exactly equivalent to calling the generated "has" accessor method corresponding to the field.

Specified by:

hasField in interface MessageOrBuilder

getField

public Object getField(Descriptors.FieldDescriptor field)

Description copied from interface: MessageOrBuilder

Obtains the value of the given field, or the default value if it is not set. For primitive fields, the boxed primitive value is returned. For enum fields, the EnumValueDescriptor for the value is returned. For embedded message fields, the sub-message is returned. For repeated fields, a java.util.List is returned.

Specified by:

getField in interface MessageOrBuilder

getRepeatedFieldCount

public int getRepeatedFieldCount(Descriptors.FieldDescriptor field)

Description copied from interface: MessageOrBuilder

Gets the number of elements of a repeated field. This is exactly equivalent to calling the generated "Count" accessor method corresponding to the field.

Specified by:

getRepeatedFieldCount in interface MessageOrBuilder

getRepeatedField

public Object getRepeatedField(Descriptors.FieldDescriptor field,
                               int index)

Description copied from interface: MessageOrBuilder

Gets an element of a repeated field. For primitive fields, the boxed primitive value is returned. For enum fields, the EnumValueDescriptor for the value is returned. For embedded message fields, the sub-message is returned.

Specified by:

getRepeatedField in interface MessageOrBuilder

getUnknownFields

public UnknownFieldSet getUnknownFields()

Description copied from interface: MessageOrBuilder

Get the UnknownFieldSet for this message.

Specified by:

getUnknownFields in interface MessageOrBuilder

parseUnknownField

protected boolean parseUnknownField(CodedInputStream input,
                                    UnknownFieldSet.Builder unknownFields,
                                    ExtensionRegistryLite extensionRegistry,
                                    int tag)
                             throws IOException

Called by subclasses to parse an unknown field.

Returns:

true unless the tag is an end-group tag.

Throws:

IOException

parseWithIOException

protected static <M extends Message> M parseWithIOException(Parser<M> parser,
                                                            InputStream input)
                                                     throws IOException

Throws:

IOException

parseWithIOException

protected static <M extends Message> M parseWithIOException(Parser<M> parser,
                                                            InputStream input,
                                                            ExtensionRegistryLite extensions)
                                                     throws IOException

Throws:

IOException

parseWithIOException

protected static <M extends Message> M parseWithIOException(Parser<M> parser,
                                                            CodedInputStream input)
                                                     throws IOException

Throws:

IOException

parseWithIOException

protected static <M extends Message> M parseWithIOException(Parser<M> parser,
                                                            CodedInputStream input,
                                                            ExtensionRegistryLite extensions)
                                                     throws IOException

Throws:

IOException

parseDelimitedWithIOException

protected static <M extends Message> M parseDelimitedWithIOException(Parser<M> parser,
                                                                     InputStream input)
                                                              throws IOException

Throws:

IOException

parseDelimitedWithIOException

protected static <M extends Message> M parseDelimitedWithIOException(Parser<M> parser,
                                                                     InputStream input,
                                                                     ExtensionRegistryLite extensions)
                                                              throws IOException

Throws:

IOException

writeTo

public void writeTo(CodedOutputStream output)
             throws IOException

Description copied from interface: MessageLite

Serializes the message and writes it to output. This does not flush or close the stream.

Specified by:

writeTo in interface MessageLite

Overrides:

writeTo in class AbstractMessage

Throws:

IOException

getSerializedSize

public int getSerializedSize()

Description copied from interface: MessageLite

Get the number of bytes required to encode this message. The result is only computed on the first call and memoized after that.

Specified by:

getSerializedSize in interface MessageLite

Overrides:

getSerializedSize in class AbstractMessage

makeExtensionsImmutable

protected void makeExtensionsImmutable()

Used by parsing constructors in generated classes.

newBuilderForType

protected abstract Message.Builder newBuilderForType(GeneratedMessage.BuilderParent parent)

TODO(xiaofeng): remove this together with GeneratedMessage.BuilderParent.

newBuilderForType

protected Message.Builder newBuilderForType(AbstractMessage.BuilderParent parent)

Description copied from class: AbstractMessage

Create a nested builder.

Overrides:

newBuilderForType in class AbstractMessage

newMessageScopedGeneratedExtension

public static <ContainingType extends Message,Type> GeneratedMessage.GeneratedExtension<ContainingType,Type> newMessageScopedGeneratedExtension(Message scope,
                                                                                                                                                int descriptorIndex,
                                                                                                                                                Class singularType,
                                                                                                                                                Message defaultInstance)

For use by generated code only.

newFileScopedGeneratedExtension

public static <ContainingType extends Message,Type> GeneratedMessage.GeneratedExtension<ContainingType,Type> newFileScopedGeneratedExtension(Class singularType,
                                                                                                                                             Message defaultInstance)

For use by generated code only.

newMessageScopedGeneratedExtension

public static <ContainingType extends Message,Type> GeneratedMessage.GeneratedExtension<ContainingType,Type> newMessageScopedGeneratedExtension(Message scope,
                                                                                                                                                String name,
                                                                                                                                                Class singularType,
                                                                                                                                                Message defaultInstance)

Used in proto1 generated code only. After enabling bridge, we can define proto2 extensions (the extended type is a proto2 mutable message) in a proto1 .proto file. For these extensions we should generate proto2 GeneratedExtensions.

newFileScopedGeneratedExtension

public static <ContainingType extends Message,Type> GeneratedMessage.GeneratedExtension<ContainingType,Type> newFileScopedGeneratedExtension(Class singularType,
                                                                                                                                             Message defaultInstance,
                                                                                                                                             String descriptorOuterClass,
                                                                                                                                             String extensionName)

Used in proto1 generated code only. After enabling bridge, we can define proto2 extensions (the extended type is a proto2 mutable message) in a proto1 .proto file. For these extensions we should generate proto2 GeneratedExtensions.

internalGetMapField

protected MapField internalGetMapField(int fieldNumber)

Gets the map field with the given field number. This method should be overridden in the generated message class if the message contains map fields. Unlike other field types, reflection support for map fields can't be implemented based on generated public API because we need to access a map field as a list in reflection API but the generated API only allows us to access it as a map. This method returns the underlying map field directly and thus enables us to access the map field as a list.

writeReplace

protected Object writeReplace()
                       throws ObjectStreamException

Replaces this object in the output stream with a serialized form. Part of Java's serialization magic. Generated sub-classes must override this method by calling return super.writeReplace();

Returns:

a SerializedForm of this message

Throws:

ObjectStreamException

computeStringSize

protected static int computeStringSize(int fieldNumber,
                                       Object value)

computeStringSizeNoTag

protected static int computeStringSizeNoTag(Object value)

writeString

protected static void writeString(CodedOutputStream output,
                                  int fieldNumber,
                                  Object value)
                           throws IOException

Throws:

IOException

writeStringNoTag

protected static void writeStringNoTag(CodedOutputStream output,
                                       Object value)
                                throws IOException

Throws:

IOException