diff options
2 files changed, 98 insertions, 0 deletions
diff --git a/src/main/java/com/google/devtools/build/lib/skyframe/serialization/ImmutableTableCodec.java b/src/main/java/com/google/devtools/build/lib/skyframe/serialization/ImmutableTableCodec.java new file mode 100644 index 0000000000..5207406089 --- /dev/null +++ b/src/main/java/com/google/devtools/build/lib/skyframe/serialization/ImmutableTableCodec.java @@ -0,0 +1,64 @@ +// 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(); + } +} diff --git a/src/test/java/com/google/devtools/build/lib/skyframe/serialization/ImmutableTableCodecTest.java b/src/test/java/com/google/devtools/build/lib/skyframe/serialization/ImmutableTableCodecTest.java new file mode 100644 index 0000000000..770d2372a8 --- /dev/null +++ b/src/test/java/com/google/devtools/build/lib/skyframe/serialization/ImmutableTableCodecTest.java @@ -0,0 +1,34 @@ +// 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.devtools.build.lib.skyframe.serialization.testutils.SerializationTester; +import org.junit.Test; +import org.junit.runner.RunWith; +import org.junit.runners.JUnit4; + +/** Tests for {@link ImmutableTableCodec}. */ +@RunWith(JUnit4.class) +public class ImmutableTableCodecTest { + @Test + public void smoke() throws Exception { + ImmutableTable.Builder<String, String, Integer> builder = ImmutableTable.builder(); + builder.put("a", "b", 1); + builder.put("c", "d", -200); + builder.put("a", "d", 4); + new SerializationTester(ImmutableTable.of(), builder.build()).runTests(); + } +} |