From 85dda964bcf07ad1e9c0caaa665605a473d1a03c Mon Sep 17 00:00:00 2001 From: Paul Hawke Date: Mon, 2 Dec 2024 07:49:19 -0600 Subject: [PATCH] Converted type adapters --- .../wikidata/json/NamespaceTypeAdapter.java | 29 -- .../wikidata/json/NamespaceTypeAdapter.kt | 26 ++ .../json/PostProcessingTypeAdapter.java | 34 --- .../json/PostProcessingTypeAdapter.kt | 35 +++ .../json/RuntimeTypeAdapterFactory.java | 280 ------------------ .../json/RuntimeTypeAdapterFactory.kt | 273 +++++++++++++++++ .../commons/wikidata/json/UriTypeAdapter.java | 22 -- .../commons/wikidata/json/UriTypeAdapter.kt | 19 ++ 8 files changed, 353 insertions(+), 365 deletions(-) delete mode 100644 app/src/main/java/fr/free/nrw/commons/wikidata/json/NamespaceTypeAdapter.java create mode 100644 app/src/main/java/fr/free/nrw/commons/wikidata/json/NamespaceTypeAdapter.kt delete mode 100644 app/src/main/java/fr/free/nrw/commons/wikidata/json/PostProcessingTypeAdapter.java create mode 100644 app/src/main/java/fr/free/nrw/commons/wikidata/json/PostProcessingTypeAdapter.kt delete mode 100644 app/src/main/java/fr/free/nrw/commons/wikidata/json/RuntimeTypeAdapterFactory.java create mode 100644 app/src/main/java/fr/free/nrw/commons/wikidata/json/RuntimeTypeAdapterFactory.kt delete mode 100644 app/src/main/java/fr/free/nrw/commons/wikidata/json/UriTypeAdapter.java create mode 100644 app/src/main/java/fr/free/nrw/commons/wikidata/json/UriTypeAdapter.kt diff --git a/app/src/main/java/fr/free/nrw/commons/wikidata/json/NamespaceTypeAdapter.java b/app/src/main/java/fr/free/nrw/commons/wikidata/json/NamespaceTypeAdapter.java deleted file mode 100644 index cc6dcc9f9..000000000 --- a/app/src/main/java/fr/free/nrw/commons/wikidata/json/NamespaceTypeAdapter.java +++ /dev/null @@ -1,29 +0,0 @@ -package fr.free.nrw.commons.wikidata.json; - -import com.google.gson.TypeAdapter; -import com.google.gson.stream.JsonReader; -import com.google.gson.stream.JsonToken; -import com.google.gson.stream.JsonWriter; - -import fr.free.nrw.commons.wikidata.model.page.Namespace; - -import java.io.IOException; - -public class NamespaceTypeAdapter extends TypeAdapter { - - @Override - public void write(JsonWriter out, Namespace namespace) throws IOException { - out.value(namespace.code()); - } - - @Override - public Namespace read(JsonReader in) throws IOException { - if (in.peek() == JsonToken.STRING) { - // Prior to 3210ce44, we marshaled Namespace as the name string of the enum, instead of - // the code number. This introduces a backwards-compatible check for the string value. - // TODO: remove after April 2017, when all older namespaces have been deserialized. - return Namespace.valueOf(in.nextString()); - } - return Namespace.of(in.nextInt()); - } -} diff --git a/app/src/main/java/fr/free/nrw/commons/wikidata/json/NamespaceTypeAdapter.kt b/app/src/main/java/fr/free/nrw/commons/wikidata/json/NamespaceTypeAdapter.kt new file mode 100644 index 000000000..09f1dc5e8 --- /dev/null +++ b/app/src/main/java/fr/free/nrw/commons/wikidata/json/NamespaceTypeAdapter.kt @@ -0,0 +1,26 @@ +package fr.free.nrw.commons.wikidata.json + +import com.google.gson.TypeAdapter +import com.google.gson.stream.JsonReader +import com.google.gson.stream.JsonToken +import com.google.gson.stream.JsonWriter +import fr.free.nrw.commons.wikidata.model.page.Namespace +import java.io.IOException + +class NamespaceTypeAdapter : TypeAdapter() { + @Throws(IOException::class) + override fun write(out: JsonWriter, namespace: Namespace) { + out.value(namespace.code().toLong()) + } + + @Throws(IOException::class) + override fun read(reader: JsonReader): Namespace { + if (reader.peek() == JsonToken.STRING) { + // Prior to 3210ce44, we marshaled Namespace as the name string of the enum, instead of + // the code number. This introduces a backwards-compatible check for the string value. + // TODO: remove after April 2017, when all older namespaces have been deserialized. + return Namespace.valueOf(reader.nextString()) + } + return Namespace.of(reader.nextInt()) + } +} diff --git a/app/src/main/java/fr/free/nrw/commons/wikidata/json/PostProcessingTypeAdapter.java b/app/src/main/java/fr/free/nrw/commons/wikidata/json/PostProcessingTypeAdapter.java deleted file mode 100644 index b6b67d4d2..000000000 --- a/app/src/main/java/fr/free/nrw/commons/wikidata/json/PostProcessingTypeAdapter.java +++ /dev/null @@ -1,34 +0,0 @@ -package fr.free.nrw.commons.wikidata.json; - -import com.google.gson.Gson; -import com.google.gson.TypeAdapter; -import com.google.gson.TypeAdapterFactory; -import com.google.gson.reflect.TypeToken; -import com.google.gson.stream.JsonReader; -import com.google.gson.stream.JsonWriter; - -import java.io.IOException; - -public class PostProcessingTypeAdapter implements TypeAdapterFactory { - public interface PostProcessable { - void postProcess(); - } - - public TypeAdapter create(Gson gson, TypeToken type) { - final TypeAdapter delegate = gson.getDelegateAdapter(this, type); - - return new TypeAdapter() { - public void write(JsonWriter out, T value) throws IOException { - delegate.write(out, value); - } - - public T read(JsonReader in) throws IOException { - T obj = delegate.read(in); - if (obj instanceof PostProcessable) { - ((PostProcessable)obj).postProcess(); - } - return obj; - } - }; - } -} diff --git a/app/src/main/java/fr/free/nrw/commons/wikidata/json/PostProcessingTypeAdapter.kt b/app/src/main/java/fr/free/nrw/commons/wikidata/json/PostProcessingTypeAdapter.kt new file mode 100644 index 000000000..cf07eabf4 --- /dev/null +++ b/app/src/main/java/fr/free/nrw/commons/wikidata/json/PostProcessingTypeAdapter.kt @@ -0,0 +1,35 @@ +package fr.free.nrw.commons.wikidata.json + +import com.google.gson.Gson +import com.google.gson.TypeAdapter +import com.google.gson.TypeAdapterFactory +import com.google.gson.reflect.TypeToken +import com.google.gson.stream.JsonReader +import com.google.gson.stream.JsonWriter +import java.io.IOException + +class PostProcessingTypeAdapter : TypeAdapterFactory { + interface PostProcessable { + fun postProcess() + } + + override fun create(gson: Gson, type: TypeToken): TypeAdapter { + val delegate = gson.getDelegateAdapter(this, type) + + return object : TypeAdapter() { + @Throws(IOException::class) + override fun write(out: JsonWriter, value: T) { + delegate.write(out, value) + } + + @Throws(IOException::class) + override fun read(reader: JsonReader): T { + val obj = delegate.read(reader) + if (obj is PostProcessable) { + (obj as PostProcessable).postProcess() + } + return obj + } + } + } +} diff --git a/app/src/main/java/fr/free/nrw/commons/wikidata/json/RuntimeTypeAdapterFactory.java b/app/src/main/java/fr/free/nrw/commons/wikidata/json/RuntimeTypeAdapterFactory.java deleted file mode 100644 index 828dfbd68..000000000 --- a/app/src/main/java/fr/free/nrw/commons/wikidata/json/RuntimeTypeAdapterFactory.java +++ /dev/null @@ -1,280 +0,0 @@ -package fr.free.nrw.commons.wikidata.json; - -/* - * Copyright (C) 2011 Google Inc. - * - * 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. - */ - -import android.util.Log; -import java.io.IOException; -import java.util.LinkedHashMap; -import java.util.Map; - -import com.google.gson.Gson; -import com.google.gson.JsonElement; -import com.google.gson.JsonObject; -import com.google.gson.JsonParseException; -import com.google.gson.JsonPrimitive; -import com.google.gson.TypeAdapter; -import com.google.gson.TypeAdapterFactory; -import com.google.gson.internal.Streams; -import com.google.gson.reflect.TypeToken; -import com.google.gson.stream.JsonReader; -import com.google.gson.stream.JsonWriter; - -/** - * Adapts values whose runtime type may differ from their declaration type. This - * is necessary when a field's type is not the same type that GSON should create - * when deserializing that field. For example, consider these types: - * 
   {@code
- *   abstract class Shape {
- *     int x;
- *     int y;
- *   }
- *   class Circle extends Shape {
- *     int radius;
- *   }
- *   class Rectangle extends Shape {
- *     int width;
- *     int height;
- *   }
- *   class Diamond extends Shape {
- *     int width;
- *     int height;
- *   }
- *   class Drawing {
- *     Shape bottomShape;
- *     Shape topShape;
- *   }
- * }
- *

Without additional type information, the serialized JSON is ambiguous. Is - * the bottom shape in this drawing a rectangle or a diamond? 

   {@code
- *   {
- *     "bottomShape": {
- *       "width": 10,
- *       "height": 5,
- *       "x": 0,
- *       "y": 0
- *     },
- *     "topShape": {
- *       "radius": 2,
- *       "x": 4,
- *       "y": 1
- *     }
- *   }}
- * This class addresses this problem by adding type information to the - * serialized JSON and honoring that type information when the JSON is - * deserialized: 
   {@code
- *   {
- *     "bottomShape": {
- *       "type": "Diamond",
- *       "width": 10,
- *       "height": 5,
- *       "x": 0,
- *       "y": 0
- *     },
- *     "topShape": {
- *       "type": "Circle",
- *       "radius": 2,
- *       "x": 4,
- *       "y": 1
- *     }
- *   }}
- * Both the type field name ({@code "type"}) and the type labels ({@code - * "Rectangle"}) are configurable. - * - *

Registering Types

- * Create a {@code RuntimeTypeAdapterFactory} by passing the base type and type field - * name to the {@link #of} factory method. If you don't supply an explicit type - * field name, {@code "type"} will be used. 
   {@code
- *   RuntimeTypeAdapterFactory shapeAdapterFactory
- *       = RuntimeTypeAdapterFactory.of(Shape.class, "type");
- * }
- * Next register all of your subtypes. Every subtype must be explicitly - * registered. This protects your application from injection attacks. If you - * don't supply an explicit type label, the type's simple name will be used. - * 
   {@code
- *   shapeAdapterFactory.registerSubtype(Rectangle.class, "Rectangle");
- *   shapeAdapterFactory.registerSubtype(Circle.class, "Circle");
- *   shapeAdapterFactory.registerSubtype(Diamond.class, "Diamond");
- * }
- * Finally, register the type adapter factory in your application's GSON builder: - * 
   {@code
- *   Gson gson = new GsonBuilder()
- *       .registerTypeAdapterFactory(shapeAdapterFactory)
- *       .create();
- * }
- * Like {@code GsonBuilder}, this API supports chaining: 
   {@code
- *   RuntimeTypeAdapterFactory shapeAdapterFactory = RuntimeTypeAdapterFactory.of(Shape.class)
- *       .registerSubtype(Rectangle.class)
- *       .registerSubtype(Circle.class)
- *       .registerSubtype(Diamond.class);
- * }
- * - *

Serialization and deserialization

- * In order to serialize and deserialize a polymorphic object, - * you must specify the base type explicitly. - * 
   {@code
- *   Diamond diamond = new Diamond();
- *   String json = gson.toJson(diamond, Shape.class);
- * }
- * And then: - * 
   {@code
- *   Shape shape = gson.fromJson(json, Shape.class);
- * }
- */ -public final class RuntimeTypeAdapterFactory implements TypeAdapterFactory { - private final Class baseType; - private final String typeFieldName; - private final Map> labelToSubtype = new LinkedHashMap>(); - private final Map, String> subtypeToLabel = new LinkedHashMap, String>(); - private final boolean maintainType; - - private RuntimeTypeAdapterFactory(Class baseType, String typeFieldName, boolean maintainType) { - if (typeFieldName == null || baseType == null) { - throw new NullPointerException(); - } - this.baseType = baseType; - this.typeFieldName = typeFieldName; - this.maintainType = maintainType; - } - - /** - * Creates a new runtime type adapter using for {@code baseType} using {@code - * typeFieldName} as the type field name. Type field names are case sensitive. - * {@code maintainType} flag decide if the type will be stored in pojo or not. - */ - public static RuntimeTypeAdapterFactory of(Class baseType, String typeFieldName, boolean maintainType) { - return new RuntimeTypeAdapterFactory(baseType, typeFieldName, maintainType); - } - - /** - * Creates a new runtime type adapter using for {@code baseType} using {@code - * typeFieldName} as the type field name. Type field names are case sensitive. - */ - public static RuntimeTypeAdapterFactory of(Class baseType, String typeFieldName) { - return new RuntimeTypeAdapterFactory(baseType, typeFieldName, false); - } - - /** - * Creates a new runtime type adapter for {@code baseType} using {@code "type"} as - * the type field name. - */ - public static RuntimeTypeAdapterFactory of(Class baseType) { - return new RuntimeTypeAdapterFactory(baseType, "type", false); - } - - /** - * Registers {@code type} identified by {@code label}. Labels are case - * sensitive. - * - * @throws IllegalArgumentException if either {@code type} or {@code label} - * have already been registered on this type adapter. - */ - public RuntimeTypeAdapterFactory registerSubtype(Class type, String label) { - if (type == null || label == null) { - throw new NullPointerException(); - } - if (subtypeToLabel.containsKey(type) || labelToSubtype.containsKey(label)) { - throw new IllegalArgumentException("types and labels must be unique"); - } - labelToSubtype.put(label, type); - subtypeToLabel.put(type, label); - return this; - } - - /** - * Registers {@code type} identified by its {@link Class#getSimpleName simple - * name}. Labels are case sensitive. - * - * @throws IllegalArgumentException if either {@code type} or its simple name - * have already been registered on this type adapter. - */ - public RuntimeTypeAdapterFactory registerSubtype(Class type) { - return registerSubtype(type, type.getSimpleName()); - } - - public TypeAdapter create(Gson gson, TypeToken type) { - if (type.getRawType() != baseType) { - return null; - } - - final Map> labelToDelegate - = new LinkedHashMap>(); - final Map, TypeAdapter> subtypeToDelegate - = new LinkedHashMap, TypeAdapter>(); - for (Map.Entry> entry : labelToSubtype.entrySet()) { - TypeAdapter delegate = gson.getDelegateAdapter(this, TypeToken.get(entry.getValue())); - labelToDelegate.put(entry.getKey(), delegate); - subtypeToDelegate.put(entry.getValue(), delegate); - } - - return new TypeAdapter() { - @Override public R read(JsonReader in) throws IOException { - JsonElement jsonElement = Streams.parse(in); - JsonElement labelJsonElement; - if (maintainType) { - labelJsonElement = jsonElement.getAsJsonObject().get(typeFieldName); - } else { - labelJsonElement = jsonElement.getAsJsonObject().remove(typeFieldName); - } - - if (labelJsonElement == null) { - throw new JsonParseException("cannot deserialize " + baseType - + " because it does not define a field named " + typeFieldName); - } - String label = labelJsonElement.getAsString(); - @SuppressWarnings("unchecked") // registration requires that subtype extends T - TypeAdapter delegate = (TypeAdapter) labelToDelegate.get(label); - if (delegate == null) { - - Log.e("RuntimeTypeAdapter", "cannot deserialize " + baseType + " subtype named " - + label + "; did you forget to register a subtype? " +jsonElement); - return null; - } - return delegate.fromJsonTree(jsonElement); - } - - @Override public void write(JsonWriter out, R value) throws IOException { - Class srcType = value.getClass(); - String label = subtypeToLabel.get(srcType); - @SuppressWarnings("unchecked") // registration requires that subtype extends T - TypeAdapter delegate = (TypeAdapter) subtypeToDelegate.get(srcType); - if (delegate == null) { - throw new JsonParseException("cannot serialize " + srcType.getName() - + "; did you forget to register a subtype?"); - } - JsonObject jsonObject = delegate.toJsonTree(value).getAsJsonObject(); - - if (maintainType) { - Streams.write(jsonObject, out); - return; - } - - JsonObject clone = new JsonObject(); - - if (jsonObject.has(typeFieldName)) { - throw new JsonParseException("cannot serialize " + srcType.getName() - + " because it already defines a field named " + typeFieldName); - } - clone.add(typeFieldName, new JsonPrimitive(label)); - - for (Map.Entry e : jsonObject.entrySet()) { - clone.add(e.getKey(), e.getValue()); - } - Streams.write(clone, out); - } - }.nullSafe(); - } -} diff --git a/app/src/main/java/fr/free/nrw/commons/wikidata/json/RuntimeTypeAdapterFactory.kt b/app/src/main/java/fr/free/nrw/commons/wikidata/json/RuntimeTypeAdapterFactory.kt new file mode 100644 index 000000000..87acc939f --- /dev/null +++ b/app/src/main/java/fr/free/nrw/commons/wikidata/json/RuntimeTypeAdapterFactory.kt @@ -0,0 +1,273 @@ +package fr.free.nrw.commons.wikidata.json + +import com.google.gson.Gson +import com.google.gson.JsonObject +import com.google.gson.JsonParseException +import com.google.gson.JsonPrimitive +import com.google.gson.TypeAdapter +import com.google.gson.TypeAdapterFactory +import com.google.gson.internal.Streams +import com.google.gson.reflect.TypeToken +import com.google.gson.stream.JsonReader +import com.google.gson.stream.JsonWriter +import timber.log.Timber +import java.io.IOException + +/* +* Copyright (C) 2011 Google Inc. +* +* 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. +*/ + +/** + * Adapts values whose runtime type may differ from their declaration type. This + * is necessary when a field's type is not the same type that GSON should create + * when deserializing that field. For example, consider these types: + * 
   `abstract class Shape {
+ * int x;
+ * int y;
+ * }
+ * class Circle extends Shape {
+ * int radius;
+ * }
+ * class Rectangle extends Shape {
+ * int width;
+ * int height;
+ * }
+ * class Diamond extends Shape {
+ * int width;
+ * int height;
+ * }
+ * class Drawing {
+ * Shape bottomShape;
+ * Shape topShape;
+ * }
+`
* + * + * Without additional type information, the serialized JSON is ambiguous. Is + * the bottom shape in this drawing a rectangle or a diamond? 
   `{
+ * "bottomShape": {
+ * "width": 10,
+ * "height": 5,
+ * "x": 0,
+ * "y": 0
+ * },
+ * "topShape": {
+ * "radius": 2,
+ * "x": 4,
+ * "y": 1
+ * }
+ * }`
+ * This class addresses this problem by adding type information to the + * serialized JSON and honoring that type information when the JSON is + * deserialized: 
   `{
+ * "bottomShape": {
+ * "type": "Diamond",
+ * "width": 10,
+ * "height": 5,
+ * "x": 0,
+ * "y": 0
+ * },
+ * "topShape": {
+ * "type": "Circle",
+ * "radius": 2,
+ * "x": 4,
+ * "y": 1
+ * }
+ * }`
+ * Both the type field name (`"type"`) and the type labels (`"Rectangle"`) are configurable. + * + *

Registering Types

+ * Create a `RuntimeTypeAdapterFactory` by passing the base type and type field + * name to the [.of] factory method. If you don't supply an explicit type + * field name, `"type"` will be used. 
   `RuntimeTypeAdapterFactory shapeAdapterFactory
+ * = RuntimeTypeAdapterFactory.of(Shape.class, "type");
+`
* + * Next register all of your subtypes. Every subtype must be explicitly + * registered. This protects your application from injection attacks. If you + * don't supply an explicit type label, the type's simple name will be used. + * 
   `shapeAdapterFactory.registerSubtype(Rectangle.class, "Rectangle");
+ * shapeAdapterFactory.registerSubtype(Circle.class, "Circle");
+ * shapeAdapterFactory.registerSubtype(Diamond.class, "Diamond");
+`
* + * Finally, register the type adapter factory in your application's GSON builder: + * 
   `Gson gson = new GsonBuilder()
+ * .registerTypeAdapterFactory(shapeAdapterFactory)
+ * .create();
+`
* + * Like `GsonBuilder`, this API supports chaining: 
   `RuntimeTypeAdapterFactory shapeAdapterFactory = RuntimeTypeAdapterFactory.of(Shape.class)
+ * .registerSubtype(Rectangle.class)
+ * .registerSubtype(Circle.class)
+ * .registerSubtype(Diamond.class);
+`
* + * + *

Serialization and deserialization

+ * In order to serialize and deserialize a polymorphic object, + * you must specify the base type explicitly. + * 
   `Diamond diamond = new Diamond();
+ * String json = gson.toJson(diamond, Shape.class);
+`
* + * And then: + * 
   `Shape shape = gson.fromJson(json, Shape.class);
+`
* + */ +class RuntimeTypeAdapterFactory( + baseType: Class<*>?, + typeFieldName: String?, + maintainType: Boolean +) : TypeAdapterFactory { + + private val baseType: Class<*> + private val typeFieldName: String + private val labelToSubtype = mutableMapOf>() + private val subtypeToLabel = mutableMapOf, String>() + private val maintainType: Boolean + + init { + if (typeFieldName == null || baseType == null) { + throw NullPointerException() + } + this.baseType = baseType + this.typeFieldName = typeFieldName + this.maintainType = maintainType + } + + /** + * Registers `type` identified by `label`. Labels are case + * sensitive. + * + * @throws IllegalArgumentException if either `type` or `label` + * have already been registered on this type adapter. + */ + fun registerSubtype(type: Class?, label: String?): RuntimeTypeAdapterFactory { + if (type == null || label == null) { + throw NullPointerException() + } + require(!(subtypeToLabel.containsKey(type) || labelToSubtype.containsKey(label))) { + "types and labels must be unique" + } + + labelToSubtype[label] = type + subtypeToLabel[type] = label + return this + } + + /** + * Registers `type` identified by its [simple][Class.getSimpleName]. Labels are case sensitive. + * + * @throws IllegalArgumentException if either `type` or its simple name + * have already been registered on this type adapter. + */ + fun registerSubtype(type: Class): RuntimeTypeAdapterFactory { + return registerSubtype(type, type.simpleName) + } + + override fun create(gson: Gson, type: TypeToken): TypeAdapter? { + if (type.rawType != baseType) { + return null + } + + val labelToDelegate = mutableMapOf>() + val subtypeToDelegate = mutableMapOf, TypeAdapter<*>>() + for ((key, value) in labelToSubtype) { + val delegate = gson.getDelegateAdapter( + this, TypeToken.get( + value + ) + ) + labelToDelegate[key] = delegate + subtypeToDelegate[value] = delegate + } + + return object : TypeAdapter() { + @Throws(IOException::class) + override fun read(reader: JsonReader): R? { + val jsonElement = Streams.parse(reader) + val labelJsonElement = if (maintainType) { + jsonElement.asJsonObject[typeFieldName] + } else { + jsonElement.asJsonObject.remove(typeFieldName) + } + + if (labelJsonElement == null) { + throw JsonParseException( + "cannot deserialize $baseType because it does not define a field named $typeFieldName" + ) + } + val label = labelJsonElement.asString + val delegate = labelToDelegate[label] as TypeAdapter? + if (delegate == null) { + Timber.tag("RuntimeTypeAdapter").e( + "cannot deserialize $baseType subtype named $label; did you forget to register a subtype? $jsonElement" + ) + return null + } + return delegate.fromJsonTree(jsonElement) + } + + @Throws(IOException::class) + override fun write(out: JsonWriter, value: R) { + val srcType: Class<*> = value::class.java.javaClass + val delegate = + subtypeToDelegate[srcType] as TypeAdapter? ?: throw JsonParseException( + "cannot serialize ${srcType.name}; did you forget to register a subtype?" + ) + + val jsonObject = delegate.toJsonTree(value).asJsonObject + if (maintainType) { + Streams.write(jsonObject, out) + return + } + + if (jsonObject.has(typeFieldName)) { + throw JsonParseException( + "cannot serialize ${srcType.name} because it already defines a field named $typeFieldName" + ) + } + val clone = JsonObject() + val label = subtypeToLabel[srcType] + clone.add(typeFieldName, JsonPrimitive(label)) + for ((key, value1) in jsonObject.entrySet()) { + clone.add(key, value1) + } + Streams.write(clone, out) + } + }.nullSafe() + } + + companion object { + /** + * Creates a new runtime type adapter using for `baseType` using `typeFieldName` as the type field name. Type field names are case sensitive. + * `maintainType` flag decide if the type will be stored in pojo or not. + */ + fun of( + baseType: Class, + typeFieldName: String, + maintainType: Boolean + ): RuntimeTypeAdapterFactory = + RuntimeTypeAdapterFactory(baseType, typeFieldName, maintainType) + + /** + * Creates a new runtime type adapter using for `baseType` using `typeFieldName` as the type field name. Type field names are case sensitive. + */ + fun of(baseType: Class, typeFieldName: String): RuntimeTypeAdapterFactory = + RuntimeTypeAdapterFactory(baseType, typeFieldName, false) + + /** + * Creates a new runtime type adapter for `baseType` using `"type"` as + * the type field name. + */ + fun of(baseType: Class): RuntimeTypeAdapterFactory = + RuntimeTypeAdapterFactory(baseType, "type", false) + } +} diff --git a/app/src/main/java/fr/free/nrw/commons/wikidata/json/UriTypeAdapter.java b/app/src/main/java/fr/free/nrw/commons/wikidata/json/UriTypeAdapter.java deleted file mode 100644 index 069e02f32..000000000 --- a/app/src/main/java/fr/free/nrw/commons/wikidata/json/UriTypeAdapter.java +++ /dev/null @@ -1,22 +0,0 @@ -package fr.free.nrw.commons.wikidata.json; - -import android.net.Uri; - -import com.google.gson.TypeAdapter; -import com.google.gson.stream.JsonReader; -import com.google.gson.stream.JsonWriter; - -import java.io.IOException; - -public class UriTypeAdapter extends TypeAdapter { - @Override - public void write(JsonWriter out, Uri value) throws IOException { - out.value(value.toString()); - } - - @Override - public Uri read(JsonReader in) throws IOException { - String url = in.nextString(); - return Uri.parse(url); - } -} diff --git a/app/src/main/java/fr/free/nrw/commons/wikidata/json/UriTypeAdapter.kt b/app/src/main/java/fr/free/nrw/commons/wikidata/json/UriTypeAdapter.kt new file mode 100644 index 000000000..305cfa28a --- /dev/null +++ b/app/src/main/java/fr/free/nrw/commons/wikidata/json/UriTypeAdapter.kt @@ -0,0 +1,19 @@ +package fr.free.nrw.commons.wikidata.json + +import android.net.Uri +import com.google.gson.TypeAdapter +import com.google.gson.stream.JsonReader +import com.google.gson.stream.JsonWriter +import java.io.IOException + +class UriTypeAdapter : TypeAdapter() { + @Throws(IOException::class) + override fun write(out: JsonWriter, value: Uri) { + out.value(value.toString()) + } + + @Throws(IOException::class) + override fun read(reader: JsonReader): Uri { + return Uri.parse(reader.nextString()) + } +}