diff options
author | nmittler <nathanmittler@google.com> | 2016-01-08 09:19:11 -0800 |
---|---|---|
committer | nmittler <nathanmittler@google.com> | 2016-01-13 08:15:15 -0800 |
commit | 49efe9d7db877022e76375df2d4daadab98619b6 (patch) | |
tree | e8d60f158c87db4135b80c8caba1ecd90f782fa3 /java/core/src/main/java/com/google/protobuf/MapEntryLite.java | |
parent | d134a80f849d9fe7d3ca85f09f190351a3283f85 (diff) |
Restructuring protobuf to multiple modules
protobuf/java will become a parent pom that will contain two modules:
core - contains all of the code for the protobuf-java artifact
util - contains all of the code for the protobuf-java-util artifact
Also cleaned up various Maven warnings.
Diffstat (limited to 'java/core/src/main/java/com/google/protobuf/MapEntryLite.java')
-rw-r--r-- | java/core/src/main/java/com/google/protobuf/MapEntryLite.java | 331 |
1 files changed, 331 insertions, 0 deletions
diff --git a/java/core/src/main/java/com/google/protobuf/MapEntryLite.java b/java/core/src/main/java/com/google/protobuf/MapEntryLite.java new file mode 100644 index 00000000..bcffa946 --- /dev/null +++ b/java/core/src/main/java/com/google/protobuf/MapEntryLite.java @@ -0,0 +1,331 @@ +// 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, +// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +package com.google.protobuf; + +import java.io.IOException; + +/** + * Implements the lite version of map entry messages. + * + * This class serves as an utility class to help do serialization/parsing of + * map entries. It's used in generated code and also in the full version + * MapEntry message. + * + * Protobuf internal. Users shouldn't use. + */ +public class MapEntryLite<K, V> extends AbstractMessageLite { + private static class Metadata<K, V> { + public final MapEntryLite<K, V> defaultInstance; + public final WireFormat.FieldType keyType; + public final WireFormat.FieldType valueType; + public final Parser<MapEntryLite<K, V>> parser; + public Metadata( + MapEntryLite<K, V> defaultInstance, + WireFormat.FieldType keyType, + WireFormat.FieldType valueType) { + this.defaultInstance = defaultInstance; + this.keyType = keyType; + this.valueType = valueType; + final Metadata<K, V> finalThis = this; + this.parser = new AbstractParser<MapEntryLite<K, V>>() { + @Override + public MapEntryLite<K, V> parsePartialFrom( + CodedInputStream input, ExtensionRegistryLite extensionRegistry) + throws InvalidProtocolBufferException { + return new MapEntryLite<K, V>(finalThis, input, extensionRegistry); + } + }; + } + } + + private static final int KEY_FIELD_NUMBER = 1; + private static final int VALUE_FIELD_NUMBER = 2; + + private final Metadata<K, V> metadata; + private final K key; + private final V value; + + /** Creates a default MapEntryLite message instance. */ + private MapEntryLite( + WireFormat.FieldType keyType, K defaultKey, + WireFormat.FieldType valueType, V defaultValue) { + this.metadata = new Metadata<K, V>(this, keyType, valueType); + this.key = defaultKey; + this.value = defaultValue; + } + + /** Creates a new MapEntryLite message. */ + private MapEntryLite(Metadata<K, V> metadata, K key, V value) { + this.metadata = metadata; + this.key = key; + this.value = value; + } + + public K getKey() { + return key; + } + + public V getValue() { + return value; + } + + /** + * Creates a default MapEntryLite message instance. + * + * This method is used by generated code to create the default instance for + * a map entry message. The created default instance should be used to create + * new map entry messages of the same type. For each map entry message, only + * one default instance should be created. + */ + public static <K, V> MapEntryLite<K, V> newDefaultInstance( + WireFormat.FieldType keyType, K defaultKey, + WireFormat.FieldType valueType, V defaultValue) { + return new MapEntryLite<K, V>( + keyType, defaultKey, valueType, defaultValue); + } + + @Override + public void writeTo(CodedOutputStream output) throws IOException { + writeField(KEY_FIELD_NUMBER, metadata.keyType, key, output); + writeField(VALUE_FIELD_NUMBER, metadata.valueType, value, output); + } + + private void writeField( + int number, WireFormat.FieldType type, Object value, + CodedOutputStream output) throws IOException { + output.writeTag(number, type.getWireType()); + FieldSet.writeElementNoTag(output, type, value); + } + + private volatile int cachedSerializedSize = -1; + @Override + public int getSerializedSize() { + if (cachedSerializedSize != -1) { + return cachedSerializedSize; + } + int size = 0; + size += getFieldSize(KEY_FIELD_NUMBER, metadata.keyType, key); + size += getFieldSize(VALUE_FIELD_NUMBER, metadata.valueType, value); + cachedSerializedSize = size; + return size; + } + + private int getFieldSize( + int number, WireFormat.FieldType type, Object value) { + return CodedOutputStream.computeTagSize(number) + + FieldSet.computeElementSizeNoTag(type, value); + } + + /** Parsing constructor. */ + private MapEntryLite( + Metadata<K, V> metadata, + CodedInputStream input, + ExtensionRegistryLite extensionRegistry) + throws InvalidProtocolBufferException { + try { + K key = metadata.defaultInstance.key; + V value = metadata.defaultInstance.value; + while (true) { + int tag = input.readTag(); + if (tag == 0) { + break; + } + if (tag == WireFormat.makeTag( + KEY_FIELD_NUMBER, metadata.keyType.getWireType())) { + key = mergeField( + input, extensionRegistry, metadata.keyType, key); + } else if (tag == WireFormat.makeTag( + VALUE_FIELD_NUMBER, metadata.valueType.getWireType())) { + value = mergeField( + input, extensionRegistry, metadata.valueType, value); + } else { + if (!input.skipField(tag)) { + break; + } + } + } + this.metadata = metadata; + this.key = key; + this.value = value; + } catch (InvalidProtocolBufferException e) { + throw e.setUnfinishedMessage(this); + } catch (IOException e) { + throw new InvalidProtocolBufferException(e.getMessage()) + .setUnfinishedMessage(this); + } + } + + @SuppressWarnings("unchecked") + private <T> T mergeField( + CodedInputStream input, ExtensionRegistryLite extensionRegistry, + WireFormat.FieldType type, T value) throws IOException { + switch (type) { + case MESSAGE: + MessageLite.Builder subBuilder = ((MessageLite) value).toBuilder(); + input.readMessage(subBuilder, extensionRegistry); + return (T) subBuilder.buildPartial(); + case ENUM: + return (T) (java.lang.Integer) input.readEnum(); + case GROUP: + throw new RuntimeException("Groups are not allowed in maps."); + default: + return (T) FieldSet.readPrimitiveField(input, type, true); + } + } + + @Override + public Parser<MapEntryLite<K, V>> getParserForType() { + return metadata.parser; + } + + @Override + public Builder<K, V> newBuilderForType() { + return new Builder<K, V>(metadata); + } + + @Override + public Builder<K, V> toBuilder() { + return new Builder<K, V>(metadata, key, value); + } + + @Override + public MapEntryLite<K, V> getDefaultInstanceForType() { + return metadata.defaultInstance; + } + + @Override + public boolean isInitialized() { + if (metadata.valueType.getJavaType() == WireFormat.JavaType.MESSAGE) { + return ((MessageLite) value).isInitialized(); + } + return true; + } + + /** + * Builder used to create {@link MapEntryLite} messages. + */ + public static class Builder<K, V> + extends AbstractMessageLite.Builder<Builder<K, V>> { + private final Metadata<K, V> metadata; + private K key; + private V value; + + private Builder(Metadata<K, V> metadata) { + this.metadata = metadata; + this.key = metadata.defaultInstance.key; + this.value = metadata.defaultInstance.value; + } + + public K getKey() { + return key; + } + + public V getValue() { + return value; + } + + public Builder<K, V> setKey(K key) { + this.key = key; + return this; + } + + public Builder<K, V> setValue(V value) { + this.value = value; + return this; + } + + public Builder<K, V> clearKey() { + this.key = metadata.defaultInstance.key; + return this; + } + + public Builder<K, V> clearValue() { + this.value = metadata.defaultInstance.value; + return this; + } + + @Override + public Builder<K, V> clear() { + this.key = metadata.defaultInstance.key; + this.value = metadata.defaultInstance.value; + return this; + } + + @Override + public MapEntryLite<K, V> build() { + MapEntryLite<K, V> result = buildPartial(); + if (!result.isInitialized()) { + throw newUninitializedMessageException(result); + } + return result; + } + + @Override + public MapEntryLite<K, V> buildPartial() { + return new MapEntryLite<K, V>(metadata, key, value); + } + + @Override + public MessageLite getDefaultInstanceForType() { + return metadata.defaultInstance; + } + + @Override + public boolean isInitialized() { + if (metadata.valueType.getJavaType() == WireFormat.JavaType.MESSAGE) { + return ((MessageLite) value).isInitialized(); + } + return true; + } + + private Builder(Metadata<K, V> metadata, K key, V value) { + this.metadata = metadata; + this.key = key; + this.value = value; + } + + @Override + public Builder<K, V> clone() { + return new Builder<K, V>(metadata, key, value); + } + + @Override + public Builder<K, V> mergeFrom( + CodedInputStream input, ExtensionRegistryLite extensionRegistry) + throws IOException { + MapEntryLite<K, V> entry = + new MapEntryLite<K, V>(metadata, input, extensionRegistry); + this.key = entry.key; + this.value = entry.value; + return this; + } + } +} |