| // 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 com.google.protobuf.Descriptors.Descriptor; |
| import com.google.protobuf.Descriptors.EnumValueDescriptor; |
| import com.google.protobuf.Descriptors.FieldDescriptor; |
| |
| import java.io.IOException; |
| import java.util.Collections; |
| import java.util.Map; |
| import java.util.TreeMap; |
| |
| /** |
| * Implements MapEntry messages. |
| * |
| * In reflection API, map fields will be treated as repeated message fields and |
| * each map entry is accessed as a message. This MapEntry class is used to |
| * represent these map entry messages in reflection API. |
| * |
| * Protobuf internal. Users shouldn't use this class. |
| */ |
| public final class MapEntry<K, V> extends AbstractMessage { |
| private static class Metadata<K, V> { |
| public final Descriptor descriptor; |
| public final MapEntry<K, V> defaultInstance; |
| public final AbstractParser<MapEntry<K, V>> parser; |
| |
| public Metadata( |
| final Descriptor descriptor, final MapEntry<K, V> defaultInstance) { |
| this.descriptor = descriptor; |
| this.defaultInstance = defaultInstance; |
| final Metadata<K, V> thisMetadata = this; |
| this.parser = new AbstractParser<MapEntry<K, V>>() { |
| private final Parser<MapEntryLite<K, V>> dataParser = |
| defaultInstance.data.getParserForType(); |
| @Override |
| public MapEntry<K, V> parsePartialFrom( |
| CodedInputStream input, ExtensionRegistryLite extensionRegistry) |
| throws InvalidProtocolBufferException { |
| MapEntryLite<K, V> data = |
| dataParser.parsePartialFrom(input, extensionRegistry); |
| return new MapEntry<K, V>(thisMetadata, data); |
| } |
| |
| }; |
| } |
| } |
| |
| private final Metadata<K, V> metadata; |
| private final MapEntryLite<K, V> data; |
| |
| /** Create a default MapEntry instance. */ |
| private MapEntry(Descriptor descriptor, |
| WireFormat.FieldType keyType, K defaultKey, |
| WireFormat.FieldType valueType, V defaultValue) { |
| this.data = MapEntryLite.newDefaultInstance( |
| keyType, defaultKey, valueType, defaultValue); |
| this.metadata = new Metadata<K, V>(descriptor, this); |
| } |
| |
| /** Create a new MapEntry message. */ |
| private MapEntry(Metadata<K, V> metadata, MapEntryLite<K, V> data) { |
| this.metadata = metadata; |
| this.data = data; |
| } |
| |
| /** |
| * Create a default MapEntry instance. A default MapEntry instance should be |
| * created only once for each map entry message type. Generated code should |
| * store the created default instance and use it later to create new MapEntry |
| * messages of the same type. |
| */ |
| public static <K, V> MapEntry<K, V> newDefaultInstance( |
| Descriptor descriptor, |
| WireFormat.FieldType keyType, K defaultKey, |
| WireFormat.FieldType valueType, V defaultValue) { |
| return new MapEntry<K, V>( |
| descriptor, keyType, defaultKey, valueType, defaultValue); |
| } |
| |
| public K getKey() { |
| return data.getKey(); |
| } |
| |
| public V getValue() { |
| return data.getValue(); |
| } |
| |
| @Override |
| public int getSerializedSize() { |
| return data.getSerializedSize(); |
| } |
| |
| @Override |
| public void writeTo(CodedOutputStream output) throws IOException { |
| data.writeTo(output); |
| } |
| |
| @Override |
| public boolean isInitialized() { |
| return data.isInitialized(); |
| } |
| |
| @Override |
| public Parser<MapEntry<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, data); |
| } |
| |
| @Override |
| public MapEntry<K, V> getDefaultInstanceForType() { |
| return metadata.defaultInstance; |
| } |
| |
| @Override |
| public Descriptor getDescriptorForType() { |
| return metadata.descriptor; |
| } |
| |
| @Override |
| public Map<FieldDescriptor, Object> getAllFields() { |
| final TreeMap<FieldDescriptor, Object> result = |
| new TreeMap<FieldDescriptor, Object>(); |
| for (final FieldDescriptor field : metadata.descriptor.getFields()) { |
| if (hasField(field)) { |
| result.put(field, getField(field)); |
| } |
| } |
| return Collections.unmodifiableMap(result); |
| } |
| |
| private void checkFieldDescriptor(FieldDescriptor field) { |
| if (field.getContainingType() != metadata.descriptor) { |
| throw new RuntimeException( |
| "Wrong FieldDescriptor \"" + field.getFullName() |
| + "\" used in message \"" + metadata.descriptor.getFullName()); |
| } |
| } |
| |
| @Override |
| public boolean hasField(FieldDescriptor field) { |
| checkFieldDescriptor(field);; |
| // A MapEntry always contains two fields. |
| return true; |
| } |
| |
| @Override |
| public Object getField(FieldDescriptor field) { |
| checkFieldDescriptor(field); |
| Object result = field.getNumber() == 1 ? getKey() : getValue(); |
| // Convert enums to EnumValueDescriptor. |
| if (field.getType() == FieldDescriptor.Type.ENUM) { |
| result = field.getEnumType().findValueByNumberCreatingIfUnknown( |
| (java.lang.Integer) result); |
| } |
| return result; |
| } |
| |
| @Override |
| public int getRepeatedFieldCount(FieldDescriptor field) { |
| throw new RuntimeException( |
| "There is no repeated field in a map entry message."); |
| } |
| |
| @Override |
| public Object getRepeatedField(FieldDescriptor field, int index) { |
| throw new RuntimeException( |
| "There is no repeated field in a map entry message."); |
| } |
| |
| @Override |
| public UnknownFieldSet getUnknownFields() { |
| return UnknownFieldSet.getDefaultInstance(); |
| } |
| |
| /** |
| * Builder to create {@link MapEntry} messages. |
| */ |
| public static class Builder<K, V> |
| extends AbstractMessage.Builder<Builder<K, V>> { |
| private final Metadata<K, V> metadata; |
| private MapEntryLite<K, V> data; |
| private MapEntryLite.Builder<K, V> dataBuilder; |
| |
| private Builder(Metadata<K, V> metadata) { |
| this.metadata = metadata; |
| this.data = metadata.defaultInstance.data; |
| this.dataBuilder = null; |
| } |
| |
| private Builder(Metadata<K, V> metadata, MapEntryLite<K, V> data) { |
| this.metadata = metadata; |
| this.data = data; |
| this.dataBuilder = null; |
| } |
| |
| public K getKey() { |
| return dataBuilder == null ? data.getKey() : dataBuilder.getKey(); |
| } |
| |
| public V getValue() { |
| return dataBuilder == null ? data.getValue() : dataBuilder.getValue(); |
| } |
| |
| private void ensureMutable() { |
| if (dataBuilder == null) { |
| dataBuilder = data.toBuilder(); |
| } |
| } |
| |
| public Builder<K, V> setKey(K key) { |
| ensureMutable(); |
| dataBuilder.setKey(key); |
| return this; |
| } |
| |
| public Builder<K, V> clearKey() { |
| ensureMutable(); |
| dataBuilder.clearKey(); |
| return this; |
| } |
| |
| public Builder<K, V> setValue(V value) { |
| ensureMutable(); |
| dataBuilder.setValue(value); |
| return this; |
| } |
| |
| public Builder<K, V> clearValue() { |
| ensureMutable(); |
| dataBuilder.clearValue(); |
| return this; |
| } |
| |
| @Override |
| public MapEntry<K, V> build() { |
| MapEntry<K, V> result = buildPartial(); |
| if (!result.isInitialized()) { |
| throw newUninitializedMessageException(result); |
| } |
| return result; |
| } |
| |
| @Override |
| public MapEntry<K, V> buildPartial() { |
| if (dataBuilder != null) { |
| data = dataBuilder.buildPartial(); |
| dataBuilder = null; |
| } |
| return new MapEntry<K, V>(metadata, data); |
| } |
| |
| @Override |
| public Descriptor getDescriptorForType() { |
| return metadata.descriptor; |
| } |
| |
| private void checkFieldDescriptor(FieldDescriptor field) { |
| if (field.getContainingType() != metadata.descriptor) { |
| throw new RuntimeException( |
| "Wrong FieldDescriptor \"" + field.getFullName() |
| + "\" used in message \"" + metadata.descriptor.getFullName()); |
| } |
| } |
| |
| @Override |
| public com.google.protobuf.Message.Builder newBuilderForField( |
| FieldDescriptor field) { |
| checkFieldDescriptor(field);; |
| // This method should be called for message fields and in a MapEntry |
| // message only the value field can possibly be a message field. |
| if (field.getNumber() != 2 |
| || field.getJavaType() != FieldDescriptor.JavaType.MESSAGE) { |
| throw new RuntimeException( |
| "\"" + field.getFullName() + "\" is not a message value field."); |
| } |
| return ((Message) data.getValue()).newBuilderForType(); |
| } |
| |
| @SuppressWarnings("unchecked") |
| @Override |
| public Builder<K, V> setField(FieldDescriptor field, Object value) { |
| checkFieldDescriptor(field); |
| if (field.getNumber() == 1) { |
| setKey((K) value); |
| } else { |
| if (field.getType() == FieldDescriptor.Type.ENUM) { |
| value = ((EnumValueDescriptor) value).getNumber(); |
| } |
| setValue((V) value); |
| } |
| return this; |
| } |
| |
| @Override |
| public Builder<K, V> clearField(FieldDescriptor field) { |
| checkFieldDescriptor(field); |
| if (field.getNumber() == 1) { |
| clearKey(); |
| } else { |
| clearValue(); |
| } |
| return this; |
| } |
| |
| @Override |
| public Builder<K, V> setRepeatedField(FieldDescriptor field, int index, |
| Object value) { |
| throw new RuntimeException( |
| "There is no repeated field in a map entry message."); |
| } |
| |
| @Override |
| public Builder<K, V> addRepeatedField(FieldDescriptor field, Object value) { |
| throw new RuntimeException( |
| "There is no repeated field in a map entry message."); |
| } |
| |
| @Override |
| public Builder<K, V> setUnknownFields(UnknownFieldSet unknownFields) { |
| // Unknown fields are discarded for MapEntry message. |
| return this; |
| } |
| |
| @Override |
| public MapEntry<K, V> getDefaultInstanceForType() { |
| return metadata.defaultInstance; |
| } |
| |
| @Override |
| public boolean isInitialized() { |
| if (dataBuilder != null) { |
| return dataBuilder.isInitialized(); |
| } else { |
| return data.isInitialized(); |
| } |
| } |
| |
| @Override |
| public Map<FieldDescriptor, Object> getAllFields() { |
| final TreeMap<FieldDescriptor, Object> result = |
| new TreeMap<FieldDescriptor, Object>(); |
| for (final FieldDescriptor field : metadata.descriptor.getFields()) { |
| if (hasField(field)) { |
| result.put(field, getField(field)); |
| } |
| } |
| return Collections.unmodifiableMap(result); |
| } |
| |
| @Override |
| public boolean hasField(FieldDescriptor field) { |
| checkFieldDescriptor(field); |
| return true; |
| } |
| |
| @Override |
| public Object getField(FieldDescriptor field) { |
| checkFieldDescriptor(field); |
| Object result = field.getNumber() == 1 ? getKey() : getValue(); |
| // Convert enums to EnumValueDescriptor. |
| if (field.getType() == FieldDescriptor.Type.ENUM) { |
| result = field.getEnumType().findValueByNumberCreatingIfUnknown( |
| (java.lang.Integer) result); |
| } |
| return result; |
| } |
| |
| @Override |
| public int getRepeatedFieldCount(FieldDescriptor field) { |
| throw new RuntimeException( |
| "There is no repeated field in a map entry message."); |
| } |
| |
| @Override |
| public Object getRepeatedField(FieldDescriptor field, int index) { |
| throw new RuntimeException( |
| "There is no repeated field in a map entry message."); |
| } |
| |
| @Override |
| public UnknownFieldSet getUnknownFields() { |
| return UnknownFieldSet.getDefaultInstance(); |
| } |
| |
| @Override |
| public Builder<K, V> clone() { |
| if (dataBuilder == null) { |
| return new Builder<K, V>(metadata, data); |
| } else { |
| return new Builder<K, V>(metadata, dataBuilder.build()); |
| } |
| } |
| } |
| } |