// Protocol Buffers - Google's data interchange format
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package com.google.protobuf;

import java.util.List;
import java.util.Map;

Base interface for methods common to Message and Builder to provide type equivalency. 
Author:
jonp@google.com (Jon Perlow)/**
 * Base interface for methods common to {@link Message} and {@link Message.Builder} to provide type
 * equivalency.
 *
 * @author jonp@google.com (Jon Perlow)
 */
public interface MessageOrBuilder extends MessageLiteOrBuilder {

  // (From MessageLite, re-declared here only for return type covariance.)
  @Override
  Message getDefaultInstanceForType();

  
Returns a list of field paths (e.g. "foo.bar.baz") of required fields which are not set in this message. You should call MessageLiteOrBuilder.isInitialized() first to check if there are any missing fields, as that method is likely to be much faster than this one even when the message is fully-initialized. /**
   * Returns a list of field paths (e.g. "foo.bar.baz") of required fields which are not set in this
   * message. You should call {@link MessageLiteOrBuilder#isInitialized()} first to check if there
   * are any missing fields, as that method is likely to be much faster than this one even when the
   * message is fully-initialized.
   */
  List<String> findInitializationErrors();

  
Returns a comma-delimited list of required fields which are not set in this message object. You should call MessageLiteOrBuilder.isInitialized() first to check if there are any missing fields, as that method is likely to be much faster than this one even when the message is fully-initialized. /**
   * Returns a comma-delimited list of required fields which are not set in this message object. You
   * should call {@link MessageLiteOrBuilder#isInitialized()} first to check if there are any
   * missing fields, as that method is likely to be much faster than this one even when the message
   * is fully-initialized.
   */
  String getInitializationErrorString();

  
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. /**
   * Get the message's type's descriptor. This differs from the {@code getDescriptor()} method of
   * generated message classes in that this method is an abstract method of the {@code Message}
   * interface whereas {@code getDescriptor()} is a static method of a specific class. They return
   * the same thing.
   */
  Descriptors.Descriptor getDescriptorForType();

  
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 getField(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.
/**
   * 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 {@link #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. <br>
   * 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.
   */
  Map<Descriptors.FieldDescriptor, Object> getAllFields();

  
Returns true if the given oneof is set.
Throws:
IllegalArgumentException – if oneof.getContainingType() !=
    getDescriptorForType()./**
   * Returns true if the given oneof is set.
   *
   * @throws IllegalArgumentException if {@code oneof.getContainingType() !=
   *     getDescriptorForType()}.
   */
  boolean hasOneof(Descriptors.OneofDescriptor oneof);

  
Obtains the FieldDescriptor if the given oneof is set. Returns null if no field is set. /** Obtains the FieldDescriptor if the given oneof is set. Returns null if no field is set. */
  Descriptors.FieldDescriptor getOneofFieldDescriptor(Descriptors.OneofDescriptor oneof);

  
Returns true if the given field is set. This is exactly equivalent to calling the generated
"has" accessor method corresponding to the field.
Throws:
IllegalArgumentException – The field is a repeated field, or 
    field.getContainingType() != getDescriptorForType()./**
   * Returns true if the given field is set. This is exactly equivalent to calling the generated
   * "has" accessor method corresponding to the field.
   *
   * @throws IllegalArgumentException The field is a repeated field, or {@code
   *     field.getContainingType() != getDescriptorForType()}.
   */
  boolean hasField(Descriptors.FieldDescriptor field);

  
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.
/**
   * 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.
   */
  Object getField(Descriptors.FieldDescriptor field);

  
Gets the number of elements of a repeated field. This is exactly equivalent to calling the
generated "Count" accessor method corresponding to the field.
Throws:
IllegalArgumentException – The field is not a repeated field, or 
    field.getContainingType() != getDescriptorForType()./**
   * Gets the number of elements of a repeated field. This is exactly equivalent to calling the
   * generated "Count" accessor method corresponding to the field.
   *
   * @throws IllegalArgumentException The field is not a repeated field, or {@code
   *     field.getContainingType() != getDescriptorForType()}.
   */
  int getRepeatedFieldCount(Descriptors.FieldDescriptor field);

  
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.
Throws:
IllegalArgumentException – The field is not a repeated field, or 
    field.getContainingType() != getDescriptorForType()./**
   * 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.
   *
   * @throws IllegalArgumentException The field is not a repeated field, or {@code
   *     field.getContainingType() != getDescriptorForType()}.
   */
  Object getRepeatedField(Descriptors.FieldDescriptor field, int index);

  
Get the UnknownFieldSet for this message. /** Get the {@link UnknownFieldSet} for this message. */
  UnknownFieldSet getUnknownFields();
}