// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc. All rights reserved.
// http://code.google.com/p/protobuf/
//
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// 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.
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// contributors may be used to endorse or promote products derived from
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//
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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 jonp@google.com (Jon Perlow)
*/
public interface MessageOrBuilder extends MessageLiteOrBuilder {
// (From MessageLite, re-declared here only for return type covariance.)
//@Override (Java 1.6 override semantics, but we must support 1.5)
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<String> 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 getRepeatedFieldSize() 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 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();
}