Example usage for com.google.gson.reflect TypeToken equals

Introduction

In this page you can find the example usage for com.google.gson.reflect TypeToken equals.

Prototype

@Override
    public final boolean equals(Object o) 

Source Link

Usage

From source file:org.arl.fjage.remote.GenericValueAdapterFactory.java

License:BSD License

public <T> TypeAdapter<T> create(final Gson gson, TypeToken<T> type) {
    final Class<T> rawType = (Class<T>) type.getRawType();
    if (!rawType.equals(GenericValue.class))
        return null;
    final GenericValueAdapterFactory parent = this;
    return new TypeAdapter<T>() {

        @Override/*w w w . jav a 2 s  .c  o m*/
        public void write(JsonWriter out, T value) throws IOException {
            if (value == null) {
                out.nullValue();
                return;
            }
            Class type = ((GenericValue) value).getType();
            if (type == null) {
                out.nullValue();
                return;
            }
            if (Number.class.isAssignableFrom(type))
                out.value((Number) ((GenericValue) value).getValue());
            else if (type.equals(String.class))
                out.value((String) ((GenericValue) value).getValue());
            else if (type.equals(Boolean.class))
                out.value((Boolean) ((GenericValue) value).getValue());
            else {
                out.beginObject();
                out.name("clazz").value(type.getName());
                out.name("data");
                TypeAdapter delegate = gson.getAdapter(TypeToken.get(type));
                Object v = ((GenericValue) value).getValue();
                delegate.write(out, v);
                out.endObject();
            }
        }

        @Override
        public T read(JsonReader in) throws IOException {
            JsonToken tok = in.peek();
            if (tok == JsonToken.NULL) {
                in.nextNull();
                return null;
            }
            if (tok == JsonToken.NUMBER) {
                String s = in.nextString();
                try {
                    if (s.contains("."))
                        return (T) new GenericValue(Double.parseDouble(s));
                    else
                        return (T) new GenericValue(Long.parseLong(s));
                } catch (NumberFormatException ex) {
                    return (T) new GenericValue(null);
                }
            }
            if (tok == JsonToken.STRING)
                return (T) new GenericValue(in.nextString());
            if (tok == JsonToken.BOOLEAN)
                return (T) new GenericValue(in.nextBoolean());
            if (tok != JsonToken.BEGIN_OBJECT)
                return null;
            TypeToken tt = null;
            GenericValue rv = null;
            in.beginObject();
            while (in.hasNext()) {
                String name = in.nextName();
                if (name.equals("clazz")) {
                    try {
                        Class<?> cls = Class.forName(in.nextString());
                        tt = TypeToken.get(cls);
                    } catch (Exception ex) {
                        // do nothing
                    }
                } else if (name.equals("data") && tt != null) {
                    TypeAdapter delegate = gson.getAdapter(tt);
                    rv = new GenericValue(delegate.read(in));
                } else
                    in.skipValue();
            }
            in.endObject();
            return (T) rv;
        }

    };
}

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