java.lang.Object
- com.google.protobuf.AbstractMessageLite
- - com.google.protobuf.AbstractMessage
  - - com.google.protobuf.GeneratedMessage
    - - com.google.protobuf.DescriptorProtos.FieldDescriptorProto

All Implemented Interfaces:

DescriptorProtos.FieldDescriptorProtoOrBuilder, Message, MessageLite, MessageLiteOrBuilder, MessageOrBuilder, java.io.Serializable

Enclosing class:

DescriptorProtos
```
public static final class DescriptorProtos.FieldDescriptorProto
extends GeneratedMessage
implements DescriptorProtos.FieldDescriptorProtoOrBuilder
```
```
 Describes a field within a message.
 
```
Protobuf type google.protobuf.FieldDescriptorProto
See Also:

Serialized Form

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description
`static class`	`DescriptorProtos.FieldDescriptorProto.Builder`	Describes a field within a message.
`static class`	`DescriptorProtos.FieldDescriptorProto.Label`	Protobuf enum `google.protobuf.FieldDescriptorProto.Label`
`static class`	`DescriptorProtos.FieldDescriptorProto.Type`	Protobuf enum `google.protobuf.FieldDescriptorProto.Type`

Nested classes/interfaces inherited from class com.google.protobuf.GeneratedMessage
GeneratedMessage.ExtendableBuilder<MessageT extends GeneratedMessage.ExtendableMessage<MessageT>,BuilderT extends GeneratedMessage.ExtendableBuilder<MessageT,BuilderT>>, GeneratedMessage.ExtendableMessage<MessageT extends GeneratedMessage.ExtendableMessage<MessageT>>, GeneratedMessage.ExtendableMessageOrBuilder<MessageT extends GeneratedMessage.ExtendableMessage<MessageT>>, GeneratedMessage.ExtensionDescriptorRetriever, GeneratedMessage.FieldAccessorTable, GeneratedMessage.GeneratedExtension<ContainingT extends Message,T>, GeneratedMessage.UnusedPrivateParameter

Nested classes/interfaces inherited from class com.google.protobuf.AbstractMessage
AbstractMessage.BuilderParent

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

Field Summary

Fields
Modifier and Type	Field	Description
`private int`	`bitField0_`
`private static DescriptorProtos.FieldDescriptorProto`	`DEFAULT_INSTANCE`
`static int`	`DEFAULT_VALUE_FIELD_NUMBER`
`private java.lang.Object`	`defaultValue_`
`private java.lang.Object`	`extendee_`
`static int`	`EXTENDEE_FIELD_NUMBER`
`static int`	`JSON_NAME_FIELD_NUMBER`
`private java.lang.Object`	`jsonName_`
`private int`	`label_`
`static int`	`LABEL_FIELD_NUMBER`
`private byte`	`memoizedIsInitialized`
`private java.lang.Object`	`name_`
`static int`	`NAME_FIELD_NUMBER`
`private int`	`number_`
`static int`	`NUMBER_FIELD_NUMBER`
`static int`	`ONEOF_INDEX_FIELD_NUMBER`
`private int`	`oneofIndex_`
`private DescriptorProtos.FieldOptions`	`options_`
`static int`	`OPTIONS_FIELD_NUMBER`
`private static Parser<DescriptorProtos.FieldDescriptorProto>`	`PARSER`
`static int`	`PROTO3_OPTIONAL_FIELD_NUMBER`
`private boolean`	`proto3Optional_`
`private static long`	`serialVersionUID`
`private int`	`type_`
`static int`	`TYPE_FIELD_NUMBER`
`static int`	`TYPE_NAME_FIELD_NUMBER`
`private java.lang.Object`	`typeName_`

Fields inherited from class com.google.protobuf.GeneratedMessage
alwaysUseFieldBuilders, unknownFields

Fields inherited from class com.google.protobuf.AbstractMessage
memoizedSize

Fields inherited from class com.google.protobuf.AbstractMessageLite
memoizedHashCode

Constructor Summary

Constructors
Modifier Constructor Description

private FieldDescriptorProto()

private FieldDescriptorProto(GeneratedMessage.Builder<?> builder)

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`equals(java.lang.Object obj)`	Compares the specified object with this message for equality.
`static DescriptorProtos.FieldDescriptorProto`	`getDefaultInstance()`
`DescriptorProtos.FieldDescriptorProto`	`getDefaultInstanceForType()`	Get an instance of the type with no fields set.
`java.lang.String`	`getDefaultValue()`	For numeric types, contains the original text representation of the value.
`ByteString`	`getDefaultValueBytes()`	For numeric types, contains the original text representation of the value.
`static Descriptors.Descriptor`	`getDescriptor()`
`java.lang.String`	`getExtendee()`	For extensions, this is the name of the type being extended.
`ByteString`	`getExtendeeBytes()`	For extensions, this is the name of the type being extended.
`java.lang.String`	`getJsonName()`	JSON name of this field.
`ByteString`	`getJsonNameBytes()`	JSON name of this field.
`DescriptorProtos.FieldDescriptorProto.Label`	`getLabel()`	`optional .google.protobuf.FieldDescriptorProto.Label label = 4;`
`java.lang.String`	`getName()`	`optional string name = 1;`
`ByteString`	`getNameBytes()`	`optional string name = 1;`
`int`	`getNumber()`	`optional int32 number = 3;`
`int`	`getOneofIndex()`	If set, gives the index of a oneof in the containing type's oneof_decl list.
`DescriptorProtos.FieldOptions`	`getOptions()`	`optional .google.protobuf.FieldOptions options = 8;`
`DescriptorProtos.FieldOptionsOrBuilder`	`getOptionsOrBuilder()`	`optional .google.protobuf.FieldOptions options = 8;`
`Parser<DescriptorProtos.FieldDescriptorProto>`	`getParserForType()`	TODO: Remove this unnecessary intermediate implementation of this method.
`boolean`	`getProto3Optional()`	If true, this is a proto3 "optional".
`int`	`getSerializedSize()`	Get the number of bytes required to encode this message.
`DescriptorProtos.FieldDescriptorProto.Type`	`getType()`	If type_name is set, this need not be set.
`java.lang.String`	`getTypeName()`	For message and enum types, this is the name of the type.
`ByteString`	`getTypeNameBytes()`	For message and enum types, this is the name of the type.
`boolean`	`hasDefaultValue()`	For numeric types, contains the original text representation of the value.
`boolean`	`hasExtendee()`	For extensions, this is the name of the type being extended.
`int`	`hashCode()`	Returns the hash code value for this message.
`boolean`	`hasJsonName()`	JSON name of this field.
`boolean`	`hasLabel()`	`optional .google.protobuf.FieldDescriptorProto.Label label = 4;`
`boolean`	`hasName()`	`optional string name = 1;`
`boolean`	`hasNumber()`	`optional int32 number = 3;`
`boolean`	`hasOneofIndex()`	If set, gives the index of a oneof in the containing type's oneof_decl list.
`boolean`	`hasOptions()`	`optional .google.protobuf.FieldOptions options = 8;`
`boolean`	`hasProto3Optional()`	If true, this is a proto3 "optional".
`boolean`	`hasType()`	If type_name is set, this need not be set.
`boolean`	`hasTypeName()`	For message and enum types, this is the name of the type.
`protected GeneratedMessage.FieldAccessorTable`	`internalGetFieldAccessorTable()`	Get the FieldAccessorTable for this type.
`boolean`	`isInitialized()`	Returns true if all required fields in the message and all embedded messages are set, false otherwise.
`static DescriptorProtos.FieldDescriptorProto.Builder`	`newBuilder()`
`static DescriptorProtos.FieldDescriptorProto.Builder`	`newBuilder(DescriptorProtos.FieldDescriptorProto prototype)`
`DescriptorProtos.FieldDescriptorProto.Builder`	`newBuilderForType()`	Constructs a new builder for a message of the same type as this message.
`protected DescriptorProtos.FieldDescriptorProto.Builder`	`newBuilderForType(AbstractMessage.BuilderParent parent)`	Create a nested builder.
`static DescriptorProtos.FieldDescriptorProto`	`parseDelimitedFrom(java.io.InputStream input)`
`static DescriptorProtos.FieldDescriptorProto`	`parseDelimitedFrom(java.io.InputStream input, ExtensionRegistryLite extensionRegistry)`
`static DescriptorProtos.FieldDescriptorProto`	`parseFrom(byte[] data)`
`static DescriptorProtos.FieldDescriptorProto`	`parseFrom(byte[] data, ExtensionRegistryLite extensionRegistry)`
`static DescriptorProtos.FieldDescriptorProto`	`parseFrom(ByteString data)`
`static DescriptorProtos.FieldDescriptorProto`	`parseFrom(ByteString data, ExtensionRegistryLite extensionRegistry)`
`static DescriptorProtos.FieldDescriptorProto`	`parseFrom(CodedInputStream input)`
`static DescriptorProtos.FieldDescriptorProto`	`parseFrom(CodedInputStream input, ExtensionRegistryLite extensionRegistry)`
`static DescriptorProtos.FieldDescriptorProto`	`parseFrom(java.io.InputStream input)`
`static DescriptorProtos.FieldDescriptorProto`	`parseFrom(java.io.InputStream input, ExtensionRegistryLite extensionRegistry)`
`static DescriptorProtos.FieldDescriptorProto`	`parseFrom(java.nio.ByteBuffer data)`
`static DescriptorProtos.FieldDescriptorProto`	`parseFrom(java.nio.ByteBuffer data, ExtensionRegistryLite extensionRegistry)`
`static Parser<DescriptorProtos.FieldDescriptorProto>`	`parser()`
`DescriptorProtos.FieldDescriptorProto.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 com.google.protobuf.GeneratedMessage
canUseUnsafe, computeStringSize, computeStringSizeNoTag, emptyBooleanList, emptyDoubleList, emptyFloatList, emptyIntList, emptyList, emptyLongList, enableAlwaysUseFieldBuildersForTesting, getAllFields, getAllFieldsRaw, getDescriptorForType, getField, getFieldRaw, getOneofFieldDescriptor, getRepeatedField, getRepeatedFieldCount, getUnknownFields, hasField, hasOneof, internalGetMapField, internalGetMapFieldReflection, isStringEmpty, makeMutableCopy, makeMutableCopy, mergeFromAndMakeImmutableInternal, newFileScopedGeneratedExtension, newInstance, newMessageScopedGeneratedExtension, parseDelimitedWithIOException, parseDelimitedWithIOException, parseUnknownField, parseUnknownFieldProto3, parseWithIOException, parseWithIOException, parseWithIOException, parseWithIOException, serializeBooleanMapTo, serializeIntegerMapTo, serializeLongMapTo, serializeStringMapTo, setAlwaysUseFieldBuildersForTesting, setUnknownFields, writeReplace, writeString, writeStringNoTag

Methods inherited from class com.google.protobuf.AbstractMessage
compareFields, findInitializationErrors, getInitializationErrorString, getMemoizedSerializedSize, hashFields, newUninitializedMessageException, setMemoizedSerializedSize, toString

Methods inherited from class com.google.protobuf.AbstractMessageLite
addAll, checkByteStringIsUtf8, getSerializedSize, 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.MessageLite
toByteArray, toByteString, writeDelimitedTo, writeTo

Methods inherited from interface com.google.protobuf.MessageOrBuilder
findInitializationErrors, getAllFields, getDescriptorForType, getField, getInitializationErrorString, getOneofFieldDescriptor, getRepeatedField, getRepeatedFieldCount, getUnknownFields, hasField, hasOneof

Field Detail

serialVersionUID
```
private static final long serialVersionUID
```
See Also:

Constant Field Values

bitField0_
```
private int bitField0_
```

NAME_FIELD_NUMBER
```
public static final int NAME_FIELD_NUMBER
```
See Also:

Constant Field Values

name_

private volatile java.lang.Object name_

NUMBER_FIELD_NUMBER
```
public static final int NUMBER_FIELD_NUMBER
```
See Also:

Constant Field Values

number_
```
private int number_
```

LABEL_FIELD_NUMBER
```
public static final int LABEL_FIELD_NUMBER
```
See Also:

Constant Field Values

label_
```
private int label_
```

TYPE_FIELD_NUMBER
```
public static final int TYPE_FIELD_NUMBER
```
See Also:

Constant Field Values

type_
```
private int type_
```

TYPE_NAME_FIELD_NUMBER
```
public static final int TYPE_NAME_FIELD_NUMBER
```
See Also:

Constant Field Values

typeName_

private volatile java.lang.Object typeName_

EXTENDEE_FIELD_NUMBER
```
public static final int EXTENDEE_FIELD_NUMBER
```
See Also:

Constant Field Values

extendee_

private volatile java.lang.Object extendee_

DEFAULT_VALUE_FIELD_NUMBER
```
public static final int DEFAULT_VALUE_FIELD_NUMBER
```
See Also:

Constant Field Values

defaultValue_

private volatile java.lang.Object defaultValue_

ONEOF_INDEX_FIELD_NUMBER
```
public static final int ONEOF_INDEX_FIELD_NUMBER
```
See Also:

Constant Field Values

oneofIndex_
```
private int oneofIndex_
```

JSON_NAME_FIELD_NUMBER
```
public static final int JSON_NAME_FIELD_NUMBER
```
See Also:

Constant Field Values

jsonName_

private volatile java.lang.Object jsonName_

OPTIONS_FIELD_NUMBER
```
public static final int OPTIONS_FIELD_NUMBER
```
See Also:

Constant Field Values

options_

private DescriptorProtos.FieldOptions options_

PROTO3_OPTIONAL_FIELD_NUMBER
```
public static final int PROTO3_OPTIONAL_FIELD_NUMBER
```
See Also:

Constant Field Values

proto3Optional_
```
private boolean proto3Optional_
```

memoizedIsInitialized
```
private byte memoizedIsInitialized
```

DEFAULT_INSTANCE

private static final DescriptorProtos.FieldDescriptorProto DEFAULT_INSTANCE

PARSER

private static final Parser<DescriptorProtos.FieldDescriptorProto> PARSER

Constructor Detail

FieldDescriptorProto

private FieldDescriptorProto(GeneratedMessage.Builder<?> builder)

FieldDescriptorProto
```
private FieldDescriptorProto()
```

Method Detail

getDescriptor

public static final Descriptors.Descriptor getDescriptor()

internalGetFieldAccessorTable
```
protected GeneratedMessage.FieldAccessorTable internalGetFieldAccessorTable()
```
Description copied from class: GeneratedMessage

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 GeneratedMessage

hasName
```
public boolean hasName()
```
optional string name = 1;

Specified by:

hasName in interface DescriptorProtos.FieldDescriptorProtoOrBuilder

Returns:

Whether the name field is set.

getName
```
public java.lang.String getName()
```
optional string name = 1;

Specified by:

getName in interface DescriptorProtos.FieldDescriptorProtoOrBuilder

Returns:

The name.

getNameBytes
```
public ByteString getNameBytes()
```
optional string name = 1;

Specified by:

getNameBytes in interface DescriptorProtos.FieldDescriptorProtoOrBuilder

Returns:

The bytes for name.

hasNumber
```
public boolean hasNumber()
```
optional int32 number = 3;

Specified by:

hasNumber in interface DescriptorProtos.FieldDescriptorProtoOrBuilder

Returns:

Whether the number field is set.

getNumber
```
public int getNumber()
```
optional int32 number = 3;

Specified by:

getNumber in interface DescriptorProtos.FieldDescriptorProtoOrBuilder

Returns:

The number.

hasLabel
```
public boolean hasLabel()
```
optional .google.protobuf.FieldDescriptorProto.Label label = 4;

Specified by:

hasLabel in interface DescriptorProtos.FieldDescriptorProtoOrBuilder

Returns:

Whether the label field is set.

getLabel
```
public DescriptorProtos.FieldDescriptorProto.Label getLabel()
```
optional .google.protobuf.FieldDescriptorProto.Label label = 4;

Specified by:

getLabel in interface DescriptorProtos.FieldDescriptorProtoOrBuilder

Returns:

The label.

hasType
```
public boolean hasType()
```
```
 If type_name is set, this need not be set.  If both this and type_name
 are set, this must be one of TYPE_ENUM, TYPE_MESSAGE or TYPE_GROUP.
 
```
optional .google.protobuf.FieldDescriptorProto.Type type = 5;
Specified by:

hasType in interface DescriptorProtos.FieldDescriptorProtoOrBuilder

Returns:

Whether the type field is set.

getType

public DescriptorProtos.FieldDescriptorProto.Type getType()

 If type_name is set, this need not be set.  If both this and type_name
 are set, this must be one of TYPE_ENUM, TYPE_MESSAGE or TYPE_GROUP.

optional .google.protobuf.FieldDescriptorProto.Type type = 5;

Specified by:: getType in interface DescriptorProtos.FieldDescriptorProtoOrBuilder
Returns:: The type.

hasTypeName

public boolean hasTypeName()

 For message and enum types, this is the name of the type.  If the name
 starts with a '.', it is fully-qualified.  Otherwise, C++-like scoping
 rules are used to find the type (i.e. first the nested types within this
 message are searched, then within the parent, on up to the root
 namespace).

optional string type_name = 6;

Specified by:: hasTypeName in interface DescriptorProtos.FieldDescriptorProtoOrBuilder
Returns:: Whether the typeName field is set.

getTypeName

public java.lang.String getTypeName()

 For message and enum types, this is the name of the type.  If the name
 starts with a '.', it is fully-qualified.  Otherwise, C++-like scoping
 rules are used to find the type (i.e. first the nested types within this
 message are searched, then within the parent, on up to the root
 namespace).

optional string type_name = 6;

Specified by:: getTypeName in interface DescriptorProtos.FieldDescriptorProtoOrBuilder
Returns:: The typeName.

getTypeNameBytes

public ByteString getTypeNameBytes()

 For message and enum types, this is the name of the type.  If the name
 starts with a '.', it is fully-qualified.  Otherwise, C++-like scoping
 rules are used to find the type (i.e. first the nested types within this
 message are searched, then within the parent, on up to the root
 namespace).

optional string type_name = 6;

Specified by:: getTypeNameBytes in interface DescriptorProtos.FieldDescriptorProtoOrBuilder
Returns:: The bytes for typeName.

hasExtendee
```
public boolean hasExtendee()
```
```
 For extensions, this is the name of the type being extended.  It is
 resolved in the same manner as type_name.
 
```
optional string extendee = 2;
Specified by:

hasExtendee in interface DescriptorProtos.FieldDescriptorProtoOrBuilder

Returns:

Whether the extendee field is set.

getExtendee

public java.lang.String getExtendee()

 For extensions, this is the name of the type being extended.  It is
 resolved in the same manner as type_name.

optional string extendee = 2;

Specified by:: getExtendee in interface DescriptorProtos.FieldDescriptorProtoOrBuilder
Returns:: The extendee.

getExtendeeBytes
```
public ByteString getExtendeeBytes()
```
```
 For extensions, this is the name of the type being extended.  It is
 resolved in the same manner as type_name.
 
```
optional string extendee = 2;
Specified by:

getExtendeeBytes in interface DescriptorProtos.FieldDescriptorProtoOrBuilder

Returns:

The bytes for extendee.

hasDefaultValue

public boolean hasDefaultValue()

 For numeric types, contains the original text representation of the value.
 For booleans, "true" or "false".
 For strings, contains the default text contents (not escaped in any way).
 For bytes, contains the C escaped value.  All bytes >= 128 are escaped.

optional string default_value = 7;

Specified by:: hasDefaultValue in interface DescriptorProtos.FieldDescriptorProtoOrBuilder
Returns:: Whether the defaultValue field is set.

getDefaultValue

public java.lang.String getDefaultValue()

 For numeric types, contains the original text representation of the value.
 For booleans, "true" or "false".
 For strings, contains the default text contents (not escaped in any way).
 For bytes, contains the C escaped value.  All bytes >= 128 are escaped.

optional string default_value = 7;

Specified by:: getDefaultValue in interface DescriptorProtos.FieldDescriptorProtoOrBuilder
Returns:: The defaultValue.

getDefaultValueBytes

public ByteString getDefaultValueBytes()

 For numeric types, contains the original text representation of the value.
 For booleans, "true" or "false".
 For strings, contains the default text contents (not escaped in any way).
 For bytes, contains the C escaped value.  All bytes >= 128 are escaped.

optional string default_value = 7;

Specified by:: getDefaultValueBytes in interface DescriptorProtos.FieldDescriptorProtoOrBuilder
Returns:: The bytes for defaultValue.

hasOneofIndex
```
public boolean hasOneofIndex()
```
```
 If set, gives the index of a oneof in the containing type's oneof_decl
 list.  This field is a member of that oneof.
 
```
optional int32 oneof_index = 9;
Specified by:

hasOneofIndex in interface DescriptorProtos.FieldDescriptorProtoOrBuilder

Returns:

Whether the oneofIndex field is set.

getOneofIndex
```
public int getOneofIndex()
```
```
 If set, gives the index of a oneof in the containing type's oneof_decl
 list.  This field is a member of that oneof.
 
```
optional int32 oneof_index = 9;
Specified by:

getOneofIndex in interface DescriptorProtos.FieldDescriptorProtoOrBuilder

Returns:

The oneofIndex.

hasJsonName

public boolean hasJsonName()

 JSON name of this field. The value is set by protocol compiler. If the
 user has set a "json_name" option on this field, that option's value
 will be used. Otherwise, it's deduced from the field's name by converting
 it to camelCase.

optional string json_name = 10;

Specified by:: hasJsonName in interface DescriptorProtos.FieldDescriptorProtoOrBuilder
Returns:: Whether the jsonName field is set.

getJsonName

public java.lang.String getJsonName()

 JSON name of this field. The value is set by protocol compiler. If the
 user has set a "json_name" option on this field, that option's value
 will be used. Otherwise, it's deduced from the field's name by converting
 it to camelCase.

optional string json_name = 10;

Specified by:: getJsonName in interface DescriptorProtos.FieldDescriptorProtoOrBuilder
Returns:: The jsonName.

getJsonNameBytes

public ByteString getJsonNameBytes()

 JSON name of this field. The value is set by protocol compiler. If the
 user has set a "json_name" option on this field, that option's value
 will be used. Otherwise, it's deduced from the field's name by converting
 it to camelCase.

optional string json_name = 10;

Specified by:: getJsonNameBytes in interface DescriptorProtos.FieldDescriptorProtoOrBuilder
Returns:: The bytes for jsonName.

hasOptions
```
public boolean hasOptions()
```
optional .google.protobuf.FieldOptions options = 8;

Specified by:

hasOptions in interface DescriptorProtos.FieldDescriptorProtoOrBuilder

Returns:

Whether the options field is set.

getOptions
```
public DescriptorProtos.FieldOptions getOptions()
```
optional .google.protobuf.FieldOptions options = 8;

Specified by:

getOptions in interface DescriptorProtos.FieldDescriptorProtoOrBuilder

Returns:

The options.

getOptionsOrBuilder
```
public DescriptorProtos.FieldOptionsOrBuilder getOptionsOrBuilder()
```
optional .google.protobuf.FieldOptions options = 8;

Specified by:

getOptionsOrBuilder in interface DescriptorProtos.FieldDescriptorProtoOrBuilder

hasProto3Optional

public boolean hasProto3Optional()

 If true, this is a proto3 "optional". When a proto3 field is optional, it
 tracks presence regardless of field type.

 When proto3_optional is true, this field must belong to a oneof to signal
 to old proto3 clients that presence is tracked for this field. This oneof
 is known as a "synthetic" oneof, and this field must be its sole member
 (each proto3 optional field gets its own synthetic oneof). Synthetic oneofs
 exist in the descriptor only, and do not generate any API. Synthetic oneofs
 must be ordered after all "real" oneofs.

 For message fields, proto3_optional doesn't create any semantic change,
 since non-repeated message fields always track presence. However it still
 indicates the semantic detail of whether the user wrote "optional" or not.
 This can be useful for round-tripping the .proto file. For consistency we
 give message fields a synthetic oneof also, even though it is not required
 to track presence. This is especially important because the parser can't
 tell if a field is a message or an enum, so it must always create a
 synthetic oneof.

 Proto2 optional fields do not set this flag, because they already indicate
 optional with `LABEL_OPTIONAL`.

optional bool proto3_optional = 17;

Specified by:: hasProto3Optional in interface DescriptorProtos.FieldDescriptorProtoOrBuilder
Returns:: Whether the proto3Optional field is set.

getProto3Optional

public boolean getProto3Optional()

 If true, this is a proto3 "optional". When a proto3 field is optional, it
 tracks presence regardless of field type.

 When proto3_optional is true, this field must belong to a oneof to signal
 to old proto3 clients that presence is tracked for this field. This oneof
 is known as a "synthetic" oneof, and this field must be its sole member
 (each proto3 optional field gets its own synthetic oneof). Synthetic oneofs
 exist in the descriptor only, and do not generate any API. Synthetic oneofs
 must be ordered after all "real" oneofs.

 For message fields, proto3_optional doesn't create any semantic change,
 since non-repeated message fields always track presence. However it still
 indicates the semantic detail of whether the user wrote "optional" or not.
 This can be useful for round-tripping the .proto file. For consistency we
 give message fields a synthetic oneof also, even though it is not required
 to track presence. This is especially important because the parser can't
 tell if a field is a message or an enum, so it must always create a
 synthetic oneof.

 Proto2 optional fields do not set this flag, because they already indicate
 optional with `LABEL_OPTIONAL`.

optional bool proto3_optional = 17;

Specified by:: getProto3Optional in interface DescriptorProtos.FieldDescriptorProtoOrBuilder
Returns:: The proto3Optional.

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 GeneratedMessage

writeTo
```
public void writeTo(CodedOutputStream output)
             throws java.io.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 GeneratedMessage

Throws:

java.io.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 GeneratedMessage

equals
```
public boolean equals(java.lang.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 DescriptorProtos.FieldDescriptorProto parseFrom(java.nio.ByteBuffer data)
                                                       throws InvalidProtocolBufferException

Throws:: InvalidProtocolBufferException

parseFrom

public static DescriptorProtos.FieldDescriptorProto parseFrom(java.nio.ByteBuffer data,
                                                              ExtensionRegistryLite extensionRegistry)
                                                       throws InvalidProtocolBufferException

Throws:: InvalidProtocolBufferException

parseFrom

public static DescriptorProtos.FieldDescriptorProto parseFrom(ByteString data)
                                                       throws InvalidProtocolBufferException

Throws:: InvalidProtocolBufferException

parseFrom

public static DescriptorProtos.FieldDescriptorProto parseFrom(ByteString data,
                                                              ExtensionRegistryLite extensionRegistry)
                                                       throws InvalidProtocolBufferException

Throws:: InvalidProtocolBufferException

parseFrom

public static DescriptorProtos.FieldDescriptorProto parseFrom(byte[] data)
                                                       throws InvalidProtocolBufferException

Throws:: InvalidProtocolBufferException

parseFrom

public static DescriptorProtos.FieldDescriptorProto parseFrom(byte[] data,
                                                              ExtensionRegistryLite extensionRegistry)
                                                       throws InvalidProtocolBufferException

Throws:: InvalidProtocolBufferException

parseFrom

public static DescriptorProtos.FieldDescriptorProto parseFrom(java.io.InputStream input)
                                                       throws java.io.IOException

Throws:: java.io.IOException

parseFrom

public static DescriptorProtos.FieldDescriptorProto parseFrom(java.io.InputStream input,
                                                              ExtensionRegistryLite extensionRegistry)
                                                       throws java.io.IOException

Throws:: java.io.IOException

parseDelimitedFrom

public static DescriptorProtos.FieldDescriptorProto parseDelimitedFrom(java.io.InputStream input)
                                                                throws java.io.IOException

Throws:: java.io.IOException

parseDelimitedFrom

public static DescriptorProtos.FieldDescriptorProto parseDelimitedFrom(java.io.InputStream input,
                                                                       ExtensionRegistryLite extensionRegistry)
                                                                throws java.io.IOException

Throws:: java.io.IOException

parseFrom

public static DescriptorProtos.FieldDescriptorProto parseFrom(CodedInputStream input)
                                                       throws java.io.IOException

Throws:: java.io.IOException

parseFrom

public static DescriptorProtos.FieldDescriptorProto parseFrom(CodedInputStream input,
                                                              ExtensionRegistryLite extensionRegistry)
                                                       throws java.io.IOException

Throws:: java.io.IOException

newBuilderForType
```
public DescriptorProtos.FieldDescriptorProto.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 DescriptorProtos.FieldDescriptorProto.Builder newBuilder()

newBuilder

public static DescriptorProtos.FieldDescriptorProto.Builder newBuilder(DescriptorProtos.FieldDescriptorProto prototype)

toBuilder
```
public DescriptorProtos.FieldDescriptorProto.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 DescriptorProtos.FieldDescriptorProto.Builder newBuilderForType(AbstractMessage.BuilderParent parent)
```
Description copied from class: AbstractMessage

Create a nested builder.

Overrides:

newBuilderForType in class AbstractMessage

getDefaultInstance

public static DescriptorProtos.FieldDescriptorProto getDefaultInstance()

parser

public static Parser<DescriptorProtos.FieldDescriptorProto> parser()

getParserForType
```
public Parser<DescriptorProtos.FieldDescriptorProto> getParserForType()
```
Description copied from class: GeneratedMessage

TODO: Remove this unnecessary intermediate implementation of this method.

Specified by:

getParserForType in interface Message

Specified by:

getParserForType in interface MessageLite

Overrides:

getParserForType in class GeneratedMessage

getDefaultInstanceForType
```
public DescriptorProtos.FieldDescriptorProto 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

Modifier	Constructor	Description
`private`	`FieldDescriptorProto()`
`private`	`FieldDescriptorProto(GeneratedMessage.Builder<?> builder)`

Class DescriptorProtos.FieldDescriptorProto

Nested Class Summary

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

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

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

Field Summary

Fields inherited from class com.google.protobuf.GeneratedMessage

Fields inherited from class com.google.protobuf.AbstractMessage

Fields inherited from class com.google.protobuf.AbstractMessageLite

Constructor Summary

Method Summary

Methods inherited from class com.google.protobuf.GeneratedMessage

Methods inherited from class com.google.protobuf.AbstractMessage

Methods inherited from class com.google.protobuf.AbstractMessageLite

Methods inherited from class java.lang.Object

Methods inherited from interface com.google.protobuf.MessageLite

Methods inherited from interface com.google.protobuf.MessageOrBuilder

Field Detail

serialVersionUID

bitField0_

NAME_FIELD_NUMBER

name_

NUMBER_FIELD_NUMBER

number_

LABEL_FIELD_NUMBER

label_

TYPE_FIELD_NUMBER

type_

TYPE_NAME_FIELD_NUMBER

typeName_

EXTENDEE_FIELD_NUMBER

extendee_

DEFAULT_VALUE_FIELD_NUMBER

defaultValue_

ONEOF_INDEX_FIELD_NUMBER

oneofIndex_

JSON_NAME_FIELD_NUMBER

jsonName_

OPTIONS_FIELD_NUMBER

options_

PROTO3_OPTIONAL_FIELD_NUMBER

proto3Optional_

memoizedIsInitialized

DEFAULT_INSTANCE

PARSER

Constructor Detail

FieldDescriptorProto

FieldDescriptorProto

Method Detail

getDescriptor

internalGetFieldAccessorTable

hasName

getName

getNameBytes

hasNumber

getNumber

hasLabel

getLabel

hasType

getType

hasTypeName

getTypeName

getTypeNameBytes

hasExtendee

getExtendee

getExtendeeBytes

hasDefaultValue

getDefaultValue

getDefaultValueBytes

hasOneofIndex

getOneofIndex

hasJsonName

getJsonName

getJsonNameBytes

hasOptions

getOptions

getOptionsOrBuilder

hasProto3Optional

getProto3Optional

isInitialized