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// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc. All rights reserved.
// https://developers.google.com/protocol-buffers/
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
package com.google.protobuf;
import java.util.List;
import java.util.Map;
/**
* Base interface for methods common to {@link Message} and {@link Message.Builder} to provide type
* equivalency.
*
* @author [email protected] (Jon Perlow)
*/
@CheckReturnValue
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 {@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 findInitializationErrors();
/**
* 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 {@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 {@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.
* 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 getAllFields();
/**
* 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. */
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 {@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.
*/
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 {@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 {@code
* field.getContainingType() != getDescriptorForType()}.
*/
Object getRepeatedField(Descriptors.FieldDescriptor field, int index);
/** Get the {@link UnknownFieldSet} for this message. */
UnknownFieldSet getUnknownFields();
}