List of usage examples for com.google.gson TypeAdapter fromJsonTree
public final T fromJsonTree(JsonElement jsonTree)
From source file:com.truethat.android.external.gson.RuntimeTypeAdapterFactory.java
License:Apache License
/** * This method was modified, to include {@link #typeFieldName} in serialized registered sub types. *///from w w w. j av a 2s .c o m @Nullable public <R> TypeAdapter<R> create(Gson gson, TypeToken<R> type) { if (type.getRawType() != baseType && !labelToSubtype.containsKey(type.getRawType().getSimpleName())) { return null; } final Map<String, TypeAdapter<?>> labelToDelegate = new LinkedHashMap<>(); final Map<Class<?>, TypeAdapter<?>> subtypeToDelegate = new LinkedHashMap<>(); for (Map.Entry<String, Class<?>> 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<R>() { @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<R> delegate = (TypeAdapter<R>) 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 (jsonObject.has(typeFieldName)) { throw new JsonParseException("cannot serialize " + srcType.getName() + " because it already defines a field named " + typeFieldName); } JsonObject clone = new JsonObject(); clone.add(typeFieldName, new JsonPrimitive(label)); for (Map.Entry<String, JsonElement> e : jsonObject.entrySet()) { clone.add(e.getKey(), e.getValue()); } Streams.write(clone, out); } @Override public R read(JsonReader in) throws IOException { JsonElement jsonElement = Streams.parse(in); JsonElement 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<R> delegate = (TypeAdapter<R>) labelToDelegate.get(label); if (delegate == null) { throw new JsonParseException("cannot deserialize " + baseType + " subtype named " + label + "; did you forget to register a subtype?"); } return delegate.fromJsonTree(jsonElement); } }.nullSafe(); }
From source file:com.vaadin.addon.charts.model.gsonhelpers.AbstractSeriesTypeAdapterFactory.java
private TypeAdapter<AbstractSeries> customizeMyClassAdapter(Gson gson, TypeToken<AbstractSeries> type) { final TypeAdapter<AbstractSeries> delegate = gson.getDelegateAdapter(this, type); final TypeAdapter<JsonElement> elementAdapter = gson.getAdapter(JsonElement.class); return new TypeAdapter<AbstractSeries>() { @Override/*from w w w. j a v a 2 s .c o m*/ public void write(JsonWriter out, AbstractSeries value) throws IOException { JsonObject tree = (JsonObject) delegate.toJsonTree(value); // "flatten" series specific plot options at series level. see // Higchart API for details if (value.getPlotOptions() != null) { JsonObject plotOptionsJson = (JsonObject) tree.remove("plotOptions"); if (plotOptionsJson != null) { Set<Entry<String, JsonElement>> entrySet = plotOptionsJson.entrySet(); for (Entry<String, JsonElement> entry : entrySet) { tree.add(entry.getKey(), entry.getValue()); } tree.addProperty("type", value.getPlotOptions().getChartType().toString()); } } elementAdapter.write(out, tree); } // This is never used @Override public AbstractSeries read(JsonReader in) throws IOException { JsonElement tree = elementAdapter.read(in); return delegate.fromJsonTree(tree); } }; }
From source file:com.vaadin.addon.charts.model.gsonhelpers.DataSeriesItemTypeAdapterFactory.java
private TypeAdapter<DataSeriesItem> customizeMyClassAdapter(Gson gson, TypeToken<DataSeriesItem> type) { final TypeAdapter<DataSeriesItem> delegate = gson.getDelegateAdapter(this, type); final TypeAdapter<JsonElement> elementAdapter = gson.getAdapter(JsonElement.class); return new TypeAdapter<DataSeriesItem>() { @Override/*from www. j av a 2s .co m*/ public void write(JsonWriter out, DataSeriesItem value) throws IOException { if (value.isCustomized()) { elementAdapter.write(out, delegate.toJsonTree(value)); } else { Number x = value.getX(); Number y = value.getY(); if (x != null) { JsonArray jsonArray = new JsonArray(); jsonArray.add(new JsonPrimitive(x)); if (y != null) { jsonArray.add(new JsonPrimitive(y)); } else if (value.getLow() != null) { jsonArray.add(new JsonPrimitive(value.getLow())); jsonArray.add(new JsonPrimitive(value.getHigh())); } else { jsonArray.add(JsonNull.INSTANCE); jsonArray.add(JsonNull.INSTANCE); } elementAdapter.write(out, jsonArray); } else { // If no x set, make it like list series, just number or // min-max pairs if (y != null) { elementAdapter.write(out, new JsonPrimitive(y)); } else { JsonArray jsonArray = new JsonArray(); jsonArray.add(new JsonPrimitive(value.getLow())); jsonArray.add(new JsonPrimitive(value.getHigh())); elementAdapter.write(out, jsonArray); } } } } // This is never used @Override public DataSeriesItem read(JsonReader in) throws IOException { JsonElement tree = elementAdapter.read(in); return delegate.fromJsonTree(tree); } }; }
From source file:com.vaadin.addon.charts.model.gsonhelpers.TitleTypeAdapterFactory.java
private TypeAdapter<Title> customizeMyClassAdapter(Gson gson, TypeToken<Title> type) { final TypeAdapter<Title> delegate = gson.getDelegateAdapter(this, type); final TypeAdapter<JsonElement> elementAdapter = gson.getAdapter(JsonElement.class); return new TypeAdapter<Title>() { @Override/*from www . j av a 2 s .c o m*/ public void write(JsonWriter out, Title value) throws IOException { // null for text is significant, else there will be // "Chart Title" as default if (value != null && value.getText() == null) { boolean serializeNulls = out.getSerializeNulls(); out.setSerializeNulls(true); out.beginObject(); out.name("text"); out.nullValue(); out.endObject(); out.setSerializeNulls(serializeNulls); } else { elementAdapter.write(out, delegate.toJsonTree(value)); } } // This is never used @Override public Title read(JsonReader in) throws IOException { JsonElement tree = elementAdapter.read(in); return delegate.fromJsonTree(tree); } }; }
From source file:com.wix.mediaplatform.gson.RuntimeTypeAdapterFactory.java
License:Apache License
public <R> TypeAdapter<R> create(Gson gson, TypeToken<R> type) { if (null == type || !baseType.isAssignableFrom(type.getRawType())) { return null; }//from ww w. j a va 2 s .co m final Map<String, TypeAdapter<?>> labelToDelegate = new LinkedHashMap<>(); final Map<Class<?>, TypeAdapter<?>> subtypeToDelegate = new LinkedHashMap<>(); for (Map.Entry<String, Class<?>> 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<R>() { @Override public R read(JsonReader in) throws IOException { JsonElement jsonElement = Streams.parse(in); JsonElement labelJsonElement = jsonElement.getAsJsonObject().get(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<R> delegate = (TypeAdapter<R>) labelToDelegate.get(label); if (delegate == null) { throw new JsonParseException("cannot deserialize " + baseType + " subtype named " + label + "; did you forget to register a subtype?"); } 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<R> delegate = (TypeAdapter<R>) 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 (jsonObject.has(typeFieldName)) { // throw new JsonParseException("cannot serialize " + srcType.getName() // + " because it already defines a field named " + typeFieldName); // } JsonObject clone = new JsonObject(); // clone.add(typeFieldName, new JsonPrimitive(label)); for (Map.Entry<String, JsonElement> e : jsonObject.entrySet()) { clone.add(e.getKey(), e.getValue()); } Streams.write(clone, out); } }.nullSafe(); }
From source file:com.xpbytes.gson.hal.HalTypeAdapterFactory.java
License:Apache License
@Override public <T> TypeAdapter<T> create(final Gson gson, final TypeToken<T> type) { final TypeAdapter<T> delegate = gson.getDelegateAdapter(this, type); final TypeAdapter<JsonElement> basicAdapter = gson.getAdapter(JsonElement.class); // If we convert to JSON, isn't the deserializer more appropriate...? // Is this a HalResource? if (!HalReflection.isResource(type.getRawType())) return delegate; return new TypeAdapter<T>() { @Override// w w w .j a v a 2s .c o m public void write(JsonWriter out, T value) throws IOException { delegate.write(out, value); } @Override public T read(JsonReader in) throws IOException { JsonElement fullJson = basicAdapter.read(in); Logger.getGlobal().log(Level.ALL, fullJson.toString()); T deserialized = delegate.fromJsonTree(fullJson); if (fullJson.isJsonObject()) { JsonObject fullJsonObject = fullJson.getAsJsonObject(); JsonObject linksObject = fullJsonObject.getAsJsonObject(HalConstants.RESERVED_LINKS_ROOT); JsonObject embeddedObject = fullJsonObject.getAsJsonObject(HalConstants.RESERVED_EMBEDDED_ROOT); List<Field> fieldsList = HalReflection.getHalFields(type.getRawType()); for (Field field : fieldsList) { if (HalReflection.isLink(field)) readLink(field, linksObject, deserialized); else if (HalReflection.isEmbed(field)) readEmbed(field, embeddedObject, deserialized); } } return deserialized; } private <A> void readEmbed(Field field, JsonObject rootObject, A deserialized) { HalEmbed embed = field.getAnnotation(HalEmbed.class); boolean optional = embed.optional(); if (rootObject == null && optional) return; String memberName = HalReflection.getJsonFieldName(embed, field); JsonParseException missingException = new JsonParseException( String.format(Locale.US, "Expected embed `%s` in the embedded root `%s` to be present", memberName, HalConstants.RESERVED_EMBEDDED_ROOT)); if (rootObject == null) throw missingException; boolean exists = rootObject.has(memberName); if (!exists) { if (optional) return; throw missingException; } Type innerType = HalReflection.getFieldItemizedType(field); //Class outerType = HalReflection.getFieldType( field ); JsonElement element = rootObject.get(memberName); // This gson.fromJson call will actually call into the proper stack to recursively // deserialize embeds and set their links where necessary. HalReflection.setEmbed(field, gson.fromJson(element, innerType), deserialized); } private <A> void readLink(Field field, JsonObject rootObject, A deserialized) { HalLink link = field.getAnnotation(HalLink.class); boolean optional = link.optional(); if (rootObject == null && optional) return; String memberName = HalReflection.getJsonFieldName(link, field); JsonParseException missingException = new JsonParseException( String.format(Locale.US, "Expected link `%s` in the links root `%s` to be present", memberName, HalConstants.RESERVED_LINKS_ROOT)); if (rootObject == null) throw missingException; boolean exists = rootObject.has(memberName); if (!exists) { if (optional) return; throw missingException; } // If this is not a descendant of a HalLinkObject, we better treat it as one. Class<?> innerType = HalReflection.getFieldItemizedType(field); if (!innerType.isAssignableFrom(HalLinkObject.class)) innerType = HalLinkObject.class; //Class outerType = HalReflection.getFieldType( field ); JsonElement element = rootObject.get(memberName); // TODO support collections /*if ( Collection.class.isAssignableFrom( outerType ) ) { innerType. //noinspection unchecked Class<Collection> collectionClass = (Class<Collection>)outerType; Collection collection = gson.fromJson( element, collectionClass ); } field.getType() if ( element.isJsonArray() ) { for ( JsonElement element1 : element.getAsJsonArray() ) HalReflection.setLink( field, , deserialized ); } else { */ HalReflection.setLink(field, (HalLinkObject) gson.fromJson(element, (Type) innerType), deserialized); } }.nullSafe(); }
From source file:cz.boris.gson.typeadapter.RuntimeTypeAdapterFactory.java
License:Apache License
public <R> TypeAdapter<R> create(Gson gson, TypeToken<R> type) { if (type.getRawType() != baseType) { return null; }/*w w w. j a v a2 s .co m*/ final Map<String, TypeAdapter<?>> labelToDelegate = new LinkedHashMap<String, TypeAdapter<?>>(); final Map<Class<?>, TypeAdapter<?>> subtypeToDelegate = new LinkedHashMap<Class<?>, TypeAdapter<?>>(); for (Map.Entry<String, Class<?>> 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<R>() { @Override public R read(JsonReader in) throws IOException { JsonElement jsonElement = Streams.parse(in); JsonElement 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<R> delegate = (TypeAdapter<R>) labelToDelegate.get(label); if (delegate == null) { throw new JsonParseException("cannot deserialize " + baseType + " subtype named " + label + "; did you forget to register a subtype?"); } 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<R> delegate = (TypeAdapter<R>) 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 (jsonObject.has(typeFieldName)) { throw new JsonParseException("cannot serialize " + srcType.getName() + " because it already defines a field named " + typeFieldName); } JsonObject clone = new JsonObject(); clone.add(typeFieldName, new JsonPrimitive(label)); for (Map.Entry<String, JsonElement> e : jsonObject.entrySet()) { clone.add(e.getKey(), e.getValue()); } Streams.write(clone, out); } }; }
From source file:data.RuntimeTypeAdapterFactory.java
License:Apache License
public <R> TypeAdapter<R> create(Gson g, TypeToken<R> type) { if (type == null || !baseType.isAssignableFrom(type.getRawType())) return null; final Map<String, TypeAdapter<?>> labelToDelegate = new LinkedHashMap<String, TypeAdapter<?>>(); final Map<Class<?>, TypeAdapter<?>> subtypeToDelegate = new LinkedHashMap<Class<?>, TypeAdapter<?>>(); for (Map.Entry<String, Class<?>> entry : labelToSubtype.entrySet()) { TypeAdapter<?> delegate = g.getDelegateAdapter(this, TypeToken.get(entry.getValue())); labelToDelegate.put(entry.getKey(), delegate); subtypeToDelegate.put(entry.getValue(), delegate); }/*from w ww . j a va 2 s . com*/ return new TypeAdapter<R>() { @Override public R read(JsonReader in) throws IOException { JsonElement jsonElement = Streams.parse(in); JsonElement 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<R> delegate = (TypeAdapter<R>) labelToDelegate.get(label); if (delegate == null) throw new JsonParseException("cannot deserialize " + baseType + " subtype named " + label + "; did you forget to register a subtype?"); 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<R> delegate = (TypeAdapter<R>) 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 (jsonObject.has(typeFieldName)) throw new JsonParseException("cannot serialize " + srcType.getName() + " because it already defines a field named " + typeFieldName); JsonObject clone = new JsonObject(); clone.add(typeFieldName, new JsonPrimitive(label)); for (Map.Entry<String, JsonElement> e : jsonObject.entrySet()) clone.add(e.getKey(), e.getValue()); Streams.write(clone, out); } }.nullSafe(); }
From source file:data_storage.RuntimeTypeAdapterFactory.java
License:Apache License
public <R> TypeAdapter<R> create(Gson gson, TypeToken<R> type) { // if (type.getRawType() != baseType) { // return null; // }/* w w w . ja v a 2 s . c om*/ if (!baseType.isAssignableFrom(type.getRawType())) { return null; } final Map<String, TypeAdapter<?>> labelToDelegate = new LinkedHashMap<String, TypeAdapter<?>>(); final Map<Class<?>, TypeAdapter<?>> subtypeToDelegate = new LinkedHashMap<Class<?>, TypeAdapter<?>>(); for (Map.Entry<String, Class<?>> 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<R>() { @Override public R read(JsonReader in) throws IOException { JsonElement jsonElement = Streams.parse(in); JsonElement 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<R> delegate = (TypeAdapter<R>) labelToDelegate.get(label); if (delegate == null) { throw new JsonParseException("cannot deserialize " + baseType + " subtype named " + label + "; did you forget to register a subtype?"); } 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<R> delegate = (TypeAdapter<R>) 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 (jsonObject.has(typeFieldName)) { throw new JsonParseException("cannot serialize " + srcType.getName() + " because it already defines a field named " + typeFieldName); } JsonObject clone = new JsonObject(); clone.add(typeFieldName, new JsonPrimitive(label)); for (Map.Entry<String, JsonElement> e : jsonObject.entrySet()) { clone.add(e.getKey(), e.getValue()); } Streams.write(clone, out); } }; }
From source file:de.chefkoch.api.serialize.RuntimeTypeAdapterFactory.java
License:Apache License
public <R> TypeAdapter<R> create(Gson gson, TypeToken<R> type) { if (type.getRawType() != baseType) { return null; }//w ww . j ava 2 s .c o m final Map<String, TypeAdapter<?>> labelToDelegate = new LinkedHashMap<String, TypeAdapter<?>>(); final Map<Class<?>, TypeAdapter<?>> subtypeToDelegate = new LinkedHashMap<Class<?>, TypeAdapter<?>>(); for (Map.Entry<String, Class<?>> 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<R>() { @Override public R read(JsonReader in) throws IOException { JsonElement jsonElement = Streams.parse(in); JsonElement 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<R> delegate = (TypeAdapter<R>) labelToDelegate.get(label); if (delegate == null) { //throw new JsonParseException("cannot deserialize " + baseType + " subtype named " + label + "; did you forget to register a subtype?"); 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<R> delegate = (TypeAdapter<R>) 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 (jsonObject.has(typeFieldName)) { throw new JsonParseException("cannot serialize " + srcType.getName() + " because it already defines a field named " + typeFieldName); } JsonObject clone = new JsonObject(); clone.add(typeFieldName, new JsonPrimitive(label)); for (Map.Entry<String, JsonElement> e : jsonObject.entrySet()) { clone.add(e.getKey(), e.getValue()); } Streams.write(clone, out); } }; }