Class Empty

java.lang.Object

com.google.protobuf.AbstractMessageLite

com.google.protobuf.AbstractMessage

com.google.protobuf.GeneratedMessageV3

com.google.protobuf.Empty

All Implemented Interfaces:

EmptyOrBuilder, Message, MessageLite, MessageLiteOrBuilder, MessageOrBuilder, Serializable

public final class Empty
extends GeneratedMessageV3
implements EmptyOrBuilder

A generic empty message that you can re-use to avoid defining duplicated
empty messages in your APIs. A typical example is to use it as the request
or the response type of an API method. For instance:
    service Foo {
      rpc Bar(google.protobuf.Empty) returns (google.protobuf.Empty);
    }
The JSON representation for `Empty` is empty JSON object `{}`.

Protobuf type google.protobuf.Empty

See Also:

• Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static final class	Empty.Builder	A generic empty message that you can re-use to avoid defining duplicated empty messages in your APIs.

Nested classes/interfaces inherited from class GeneratedMessageV3

GeneratedMessageV3.BuilderParent, GeneratedMessageV3.ExtendableBuilder<MessageType, BuilderType>, GeneratedMessageV3.ExtendableMessage<MessageType>, GeneratedMessageV3.ExtendableMessageOrBuilder<MessageType>, GeneratedMessageV3.ExtensionDescriptorRetriever, GeneratedMessageV3.FieldAccessorTable, GeneratedMessageV3.UnusedPrivateParameter

Nested classes/interfaces inherited from class AbstractMessageLite

AbstractMessageLite.InternalOneOfEnum

Field Summary

Fields

Modifier and Type	Field	Description
private static final Empty	DEFAULT_INSTANCE
private byte	memoizedIsInitialized
private static final Parser<Empty>	PARSER
private static final long	serialVersionUID

Fields inherited from class GeneratedMessageV3

alwaysUseFieldBuilders, unknownFields

Fields inherited from class AbstractMessage

memoizedSize

Fields inherited from class AbstractMessageLite

memoizedHashCode

Constructor Summary

Constructors

Modifier	Constructor	Description
private	Empty()
private	Empty(GeneratedMessageV3.Builder<?> builder)

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object obj)	Compares the specified object with this message for equality.
static Empty	getDefaultInstance()
Empty	getDefaultInstanceForType()	Get an instance of the type with no fields set.
static final Descriptors.Descriptor	getDescriptor()
Parser<Empty>	getParserForType()	Gets the parser for a message of the same type as this message.
int	getSerializedSize()	Get the number of bytes required to encode this message.
final UnknownFieldSet	getUnknownFields()	Get the UnknownFieldSet for this message.
int	hashCode()	Returns the hash code value for this message.
protected GeneratedMessageV3.FieldAccessorTable	internalGetFieldAccessorTable()	Get the FieldAccessorTable for this type.
final boolean	isInitialized()	Returns true if all required fields in the message and all embedded messages are set, false otherwise.
static Empty.Builder	newBuilder()
static Empty.Builder	newBuilder(Empty prototype)
Empty.Builder	newBuilderForType()	Constructs a new builder for a message of the same type as this message.
protected Empty.Builder	newBuilderForType(GeneratedMessageV3.BuilderParent parent)	TODO(xiaofeng): remove this together with GeneratedMessageV3.BuilderParent.
protected Object	newInstance(GeneratedMessageV3.UnusedPrivateParameter unused)	Creates a new instance of this message type.
static Empty	parseDelimitedFrom(InputStream input)
static Empty	parseDelimitedFrom(InputStream input, ExtensionRegistryLite extensionRegistry)
static Empty	parseFrom(byte[] data)
static Empty	parseFrom(byte[] data, ExtensionRegistryLite extensionRegistry)
static Empty	parseFrom(ByteString data)
static Empty	parseFrom(ByteString data, ExtensionRegistryLite extensionRegistry)
static Empty	parseFrom(CodedInputStream input)
static Empty	parseFrom(CodedInputStream input, ExtensionRegistryLite extensionRegistry)
static Empty	parseFrom(InputStream input)
static Empty	parseFrom(InputStream input, ExtensionRegistryLite extensionRegistry)
static Empty	parseFrom(ByteBuffer data)
static Empty	parseFrom(ByteBuffer data, ExtensionRegistryLite extensionRegistry)
static Parser<Empty>	parser()
Empty.Builder	toBuilder()	Constructs a builder initialized with the current message.
void	writeTo(CodedOutputStream output)	Serializes the message and writes it to output.

Methods inherited from class GeneratedMessageV3

canUseUnsafe, computeStringSize, computeStringSizeNoTag, emptyBooleanList, emptyDoubleList, emptyFloatList, emptyIntList, emptyLongList, enableAlwaysUseFieldBuildersForTesting, getAllFields, getAllFieldsRaw, getDescriptorForType, getField, getFieldRaw, getOneofFieldDescriptor, getRepeatedField, getRepeatedFieldCount, hasField, hasOneof, internalGetMapField, isStringEmpty, makeExtensionsImmutable, mergeFromAndMakeImmutableInternal, mutableCopy, mutableCopy, mutableCopy, mutableCopy, mutableCopy, newBooleanList, newBuilderForType, newDoubleList, newFloatList, newIntList, newLongList, parseDelimitedWithIOException, parseDelimitedWithIOException, parseUnknownField, parseUnknownFieldProto3, parseWithIOException, parseWithIOException, parseWithIOException, parseWithIOException, serializeBooleanMapTo, serializeIntegerMapTo, serializeLongMapTo, serializeStringMapTo, setAlwaysUseFieldBuildersForTesting, writeReplace, writeString, writeStringNoTag

Methods inherited from class AbstractMessage

compareFields, findInitializationErrors, getInitializationErrorString, getMemoizedSerializedSize, hashBoolean, hashEnum, hashEnumList, hashFields, hashLong, newUninitializedMessageException, setMemoizedSerializedSize, toString

Methods inherited from class AbstractMessageLite

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

Methods inherited from class Object

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

Methods inherited from interface MessageLite

toByteArray, toByteString, writeDelimitedTo, writeTo

Methods inherited from interface MessageOrBuilder

findInitializationErrors, getAllFields, getDescriptorForType, getField, getInitializationErrorString, getOneofFieldDescriptor, getRepeatedField, getRepeatedFieldCount, hasField, hasOneof

Field Details

serialVersionUID

private static final long serialVersionUID

See Also:

• Constant Field Values

memoizedIsInitialized

private byte memoizedIsInitialized

DEFAULT_INSTANCE

private static final Empty DEFAULT_INSTANCE

PARSER

private static final Parser<Empty> PARSER

Constructor Details

Empty

private Empty(GeneratedMessageV3.Builder<?> builder)

Empty

private Empty()

Method Details

newInstance

protected Object newInstance(GeneratedMessageV3.UnusedPrivateParameter unused)

Description copied from class: GeneratedMessageV3

Creates a new instance of this message type. Overridden in the generated code.

Overrides:

newInstance in class GeneratedMessageV3

getUnknownFields

public final UnknownFieldSet getUnknownFields()

Description copied from interface: MessageOrBuilder

Get the UnknownFieldSet for this message.

Specified by:

getUnknownFields in interface MessageOrBuilder

Overrides:

getUnknownFields in class GeneratedMessageV3

getDescriptor

public static final Descriptors.Descriptor getDescriptor()

internalGetFieldAccessorTable

protected GeneratedMessageV3.FieldAccessorTable internalGetFieldAccessorTable()

Description copied from class: GeneratedMessageV3

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.

Specified by:

internalGetFieldAccessorTable in class GeneratedMessageV3

isInitialized

public final 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 GeneratedMessageV3

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 GeneratedMessageV3

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. If this message requires more than Integer.MAX_VALUE bytes to encode, the return value will be smaller than the actual number of bytes required and might be negative.

Specified by:

getSerializedSize in interface MessageLite

Overrides:

getSerializedSize in class GeneratedMessageV3

equals

public boolean equals(Object obj)

Description copied from interface: Message

Compares the specified object with this message for equality. Returns true if the given object is a message of the same type (as defined by getDescriptorForType()) and has identical values for all of its fields. Subclasses must implement this; inheriting Object.equals() is incorrect.

Specified by:

equals in interface Message

Overrides:

equals in class AbstractMessage

Parameters:

obj - object to be compared for equality with this message

Returns:

true if the specified object is equal to this message

hashCode

public int hashCode()

Description copied from interface: Message

Returns the hash code value for this message. The hash code of a message should mix the message's type (object identity of the descriptor) with its contents (known and unknown field values). Subclasses must implement this; inheriting Object.hashCode() is incorrect.

Specified by:

hashCode in interface Message

Overrides:

hashCode in class AbstractMessage

Returns:

the hash code value for this message

See Also:

• Map.hashCode()

parseFrom

public static Empty parseFrom(ByteBuffer data)
                       throws InvalidProtocolBufferException

Throws:

InvalidProtocolBufferException

parseFrom

public static Empty parseFrom(ByteBuffer data,
 ExtensionRegistryLite extensionRegistry)
                       throws InvalidProtocolBufferException

Throws:

InvalidProtocolBufferException

parseFrom

public static Empty parseFrom(ByteString data)
                       throws InvalidProtocolBufferException

Throws:

InvalidProtocolBufferException

parseFrom

public static Empty parseFrom(ByteString data,
 ExtensionRegistryLite extensionRegistry)
                       throws InvalidProtocolBufferException

Throws:

InvalidProtocolBufferException

parseFrom

public static Empty parseFrom(byte[] data)
                       throws InvalidProtocolBufferException

Throws:

InvalidProtocolBufferException

parseFrom

public static Empty parseFrom(byte[] data,
 ExtensionRegistryLite extensionRegistry)
                       throws InvalidProtocolBufferException

Throws:

InvalidProtocolBufferException

parseFrom

public static Empty parseFrom(InputStream input)
                       throws IOException

Throws:

IOException

parseFrom

public static Empty parseFrom(InputStream input,
 ExtensionRegistryLite extensionRegistry)
                       throws IOException

Throws:

IOException

parseDelimitedFrom

public static Empty parseDelimitedFrom(InputStream input)
                                throws IOException

Throws:

IOException

parseDelimitedFrom

public static Empty parseDelimitedFrom(InputStream input,
 ExtensionRegistryLite extensionRegistry)
                                throws IOException

Throws:

IOException

parseFrom

public static Empty parseFrom(CodedInputStream input)
                       throws IOException

Throws:

IOException

parseFrom

public static Empty parseFrom(CodedInputStream input,
 ExtensionRegistryLite extensionRegistry)
                       throws IOException

Throws:

IOException

newBuilderForType

public Empty.Builder newBuilderForType()

Description copied from interface: MessageLite

Constructs a new builder for a message of the same type as this message.

Specified by:

newBuilderForType in interface Message

Specified by:

newBuilderForType in interface MessageLite

newBuilder

public static Empty.Builder newBuilder()

newBuilder

public static Empty.Builder newBuilder(Empty prototype)

toBuilder

public Empty.Builder toBuilder()

Description copied from interface: MessageLite

Constructs a builder initialized with the current message. Use this to derive a new message from the current one.

Specified by:

toBuilder in interface Message

Specified by:

toBuilder in interface MessageLite

newBuilderForType

protected Empty.Builder newBuilderForType(GeneratedMessageV3.BuilderParent parent)

Description copied from class: GeneratedMessageV3

TODO(xiaofeng): remove this together with GeneratedMessageV3.BuilderParent.

Specified by:

newBuilderForType in class GeneratedMessageV3

getDefaultInstance

public static Empty getDefaultInstance()

parser

public static Parser<Empty> parser()

getParserForType

public Parser<Empty> 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

Overrides:

getParserForType in class GeneratedMessageV3

getDefaultInstanceForType

public Empty getDefaultInstanceForType()

Description copied from interface: MessageLiteOrBuilder

Get an instance of the type with no fields set. Because no fields are set, all getters for singular fields will return default values and repeated fields will appear empty. This may or may not be a singleton. This differs from the getDefaultInstance() method of generated message classes in that this method is an abstract method of the MessageLite interface whereas getDefaultInstance() is a static method of a specific class. They return the same thing.

Specified by:

getDefaultInstanceForType in interface MessageLiteOrBuilder

Specified by:

getDefaultInstanceForType in interface MessageOrBuilder