| // Copyright 2018 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.lib.skyframe.serialization; |
| |
| import com.google.common.collect.ImmutableTable; |
| import com.google.common.collect.Table.Cell; |
| import com.google.protobuf.CodedInputStream; |
| import com.google.protobuf.CodedOutputStream; |
| import java.io.IOException; |
| import java.util.Set; |
| |
| /** Codec for {@link ImmutableTable}. */ |
| public class ImmutableTableCodec<R, C, V> implements ObjectCodec<ImmutableTable<R, C, V>> { |
| |
| @SuppressWarnings("unchecked") |
| @Override |
| public Class<ImmutableTable<R, C, V>> getEncodedClass() { |
| // Compiler doesn't like to do a direct cast. |
| return (Class<ImmutableTable<R, C, V>>) ((Class<?>) ImmutableTable.class); |
| } |
| |
| @Override |
| public void serialize( |
| SerializationContext context, ImmutableTable<R, C, V> object, CodedOutputStream codedOut) |
| throws SerializationException, IOException { |
| Set<Cell<R, C, V>> cellSet = object.cellSet(); |
| codedOut.writeInt32NoTag(cellSet.size()); |
| for (Cell<R, C, V> cell : cellSet) { |
| context.serialize(cell.getRowKey(), codedOut); |
| context.serialize(cell.getColumnKey(), codedOut); |
| context.serialize(cell.getValue(), codedOut); |
| } |
| } |
| |
| @Override |
| public ImmutableTable<R, C, V> deserialize( |
| DeserializationContext context, CodedInputStream codedIn) |
| throws SerializationException, IOException { |
| int length = codedIn.readInt32(); |
| if (length < 0) { |
| throw new SerializationException("Expected non-negative length: " + length); |
| } |
| ImmutableTable.Builder<R, C, V> builder = ImmutableTable.builder(); |
| for (int i = 0; i < length; i++) { |
| builder.put( |
| /*rowKey=*/ context.deserialize(codedIn), |
| /*columnKey=*/ context.deserialize(codedIn), |
| /*value=*/ context.deserialize(codedIn)); |
| } |
| return builder.build(); |
| } |
| } |