Package com.google.protobuf

Class Descriptors.Descriptor

java.lang.Object
com.google.protobuf.Descriptors.GenericDescriptor
com.google.protobuf.Descriptors.Descriptor
Enclosing class:
Descriptors
public static final class Descriptors.Descriptor extends Descriptors.GenericDescriptor
Describes a message type.

  • Method Details

    • getIndex

      public int getIndex()
      Get the index of this descriptor within its parent. In other words, given a Descriptors.FileDescriptor file, the following is true: 
         for all i in [0, file.getMessageTypeCount()):
     file.getMessageType(i).getIndex() == i
      Similarly, for a Descriptors.Descriptor messageType: 
         for all i in [0, messageType.getNestedTypeCount()):
     messageType.getNestedType(i).getIndex() == i

    • toProto

      public DescriptorProtos.DescriptorProto toProto()
      Convert the descriptor to its protocol message representation.
      Specified by:
      toProto in class Descriptors.GenericDescriptor

    • getName

      public String getName()
      Get the type's unqualified name.
      Specified by:
      getName in class Descriptors.GenericDescriptor

    • getFullName

      public String getFullName()
      Get the type's fully-qualified name, within the proto language's namespace. This differs from the Java name. For example, given this .proto: 
         package foo.bar;
   option java_package = "com.example.protos"
   message Baz {}
      Baz's full name is "foo.bar.Baz".
      Specified by:
      getFullName in class Descriptors.GenericDescriptor

    • getFile

      public Descriptors.FileDescriptor getFile()
      Get the Descriptors.FileDescriptor containing this descriptor.
      Specified by:
      getFile in class Descriptors.GenericDescriptor

    • getContainingType

      public Descriptors.Descriptor getContainingType()
      If this is a nested type, get the outer descriptor, otherwise null.

    • getOptions

      public DescriptorProtos.MessageOptions getOptions()
      Get the MessageOptions, defined in descriptor.proto.

    • getFields

      public List<Descriptors.FieldDescriptor> getFields()
      Get a list of this message type's fields.

    • getOneofs

      public List<Descriptors.OneofDescriptor> getOneofs()
      Get a list of this message type's oneofs.

    • getExtensions

      public List<Descriptors.FieldDescriptor> getExtensions()
      Get a list of this message type's extensions.

    • getNestedTypes

      public List<Descriptors.Descriptor> getNestedTypes()
      Get a list of message types nested within this one.

    • getEnumTypes

      public List<Descriptors.EnumDescriptor> getEnumTypes()
      Get a list of enum types nested within this one.

    • isExtensionNumber

      public boolean isExtensionNumber(int number)
      Determines if the given field number is an extension.

    • isExtendable

      public boolean isExtendable()
      Indicates whether the message can be extended. That is, whether it has any "extensions x to y" ranges declared on it.

    • findFieldByName

      public Descriptors.FieldDescriptor findFieldByName(String name)
      Finds a field by name.
      Parameters:
      name - The unqualified name of the field (e.g. "foo").
      Returns:
      The field's descriptor, or null if not found.

    • findFieldByNumber

      public Descriptors.FieldDescriptor findFieldByNumber(int number)
      Finds a field by field number.
      Parameters:
      number - The field number within this message type.
      Returns:
      The field's descriptor, or null if not found.

    • findNestedTypeByName

      public Descriptors.Descriptor findNestedTypeByName(String name)
      Finds a nested message type by name.
      Parameters:
      name - The unqualified name of the nested type (e.g. "Foo").
      Returns:
      The types's descriptor, or null if not found.

    • findEnumTypeByName

      public Descriptors.EnumDescriptor findEnumTypeByName(String name)
      Finds a nested enum type by name.
      Parameters:
      name - The unqualified name of the nested type (e.g. "Foo").
      Returns:
      The types's descriptor, or null if not found.