// Copyright 2016 The Bazel Authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package com.google.devtools.build.android;
import java.io.IOException;
import java.io.OutputStream;
/**
* Represents the value associated with DataKey interface for resource and asset values.
*
* A DataValue is either an android resource or asset derived from a Path.
*/
public interface DataValue {
/**
* Provides the DataSource, which contains metadata about the original xml it was derived from.
*/
DataSource source();
/**
* Serializes to a supplied stream and returns the number of bytes written.
*/
int serializeTo(
DataKey key, DataSourceTable sourceTable, OutputStream output) throws IOException;
DataValue update(DataSource source);
/** Provides a representation of the value suitable for a conflict message. */
String asConflictString();
}