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

Introduction

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

Prototype

public final Class<? super T> getRawType() 

Source Link

Document

Returns the raw (non-generic) type for this type.

Usage

From source file:com.hmwg.utils.GSONUtils.java

License:Apache License

/**
 *  {@code JSON} ??//from w  w w.  j  a v  a 2  s . com
 * 
 * @param <T>
 *            ??
 * @param json
 *             {@code JSON} 
 * @param token
 *            {@code com.google.gson.reflect.TypeToken} 
 * @param datePattern
 *            ??
 * @return  {@code JSON} 
 * @since 1.0
 */
public static <T> T fromJson(String json, TypeToken<T> token, String datePattern) {
    if (isBlankString(json)) {
        return null;
    }
    GsonBuilder builder = new GsonBuilder();
    if (isBlankString(datePattern)) {
        datePattern = DEFAULT_DATE_PATTERN;
    }
    builder.setDateFormat(datePattern);
    Gson gson = builder.setDateFormat("yyyy-MM-dd HH:mm:ss").create();
    try {
        return gson.fromJson(json, token.getType());
    } catch (Exception ex) {
        Log.i("ws", " ? " + token.getRawType().getName() + " !"
                + ex.getMessage());
        return null;
    }
}

---

From source file:com.ibm.og.json.type.ChoiceConfigTypeAdapterFactory.java

License:Open Source License

@Override
@SuppressWarnings("unchecked")
public <T> TypeAdapter<T> create(final Gson gson, final TypeToken<T> type) {
    final Class<T> rawType = (Class<T>) type.getRawType();
    if (!ChoiceConfig.class.equals(rawType)) {
        return null;
    }/*from w  w  w . j ava2 s  . c  o  m*/

    final TypeAdapter<T> delegate = gson.getDelegateAdapter(this, type);

    return new TypeAdapter<T>() {
        @Override
        public void write(final JsonWriter out, final T value) throws IOException {
            delegate.write(out, value);
        }

        @Override
        @SuppressWarnings("rawtypes")
        public T read(final JsonReader in) throws IOException {
            final Class<?> genericType = (Class<?>) ((ParameterizedType) type.getType())
                    .getActualTypeArguments()[0];
            final TypeAdapter<JsonElement> jsonElementAdapter = gson.getAdapter(JsonElement.class);

            // the tree api is used here rather than the stream api so that the full object can be
            // inspected and we can differentiate between a ChoiceConfig<T> object or the underlying T
            // object itself. With the stream api there would be no way to rewind the stream once this
            // determination is made
            //
            // this logic allows the user to configure a choice of T in both the standard form, or
            // compactly if the default choice weight is sufficient e.g.
            //
            // standard form
            // {"choice": {fields for T object}, "weight": 1.0} <- weight is optional here
            //
            // compact form where default weight is acceptable
            // {fields for T object}
            final JsonElement element = jsonElementAdapter.read(in);
            if (element.isJsonObject()) {
                final JsonObject object = element.getAsJsonObject();
                if (object.entrySet().size() <= 2 && object.has("choice")) {
                    return delegate.fromJsonTree(element);
                }
            }

            return (T) new ChoiceConfig(gson.getAdapter(TypeToken.get(genericType)).fromJsonTree(element));
        }
    }.nullSafe();
}

---

From source file:com.ibm.og.json.type.ContainerConfigTypeAdapterFactory.java

License:Open Source License

@Override
@SuppressWarnings("unchecked")
public <T> TypeAdapter<T> create(final Gson gson, final TypeToken<T> type) {
    final Class<T> rawType = (Class<T>) type.getRawType();
    if (!ContainerConfig.class.equals(rawType)) {
        return null;
    }//from  ww  w  . j  a v a 2  s.  c  o  m

    final TypeAdapter<T> delegate = gson.getDelegateAdapter(this, type);

    return new TypeAdapter<T>() {
        @Override
        public void write(final JsonWriter out, final T value) throws IOException {
            delegate.write(out, value);
        }

        @Override
        public T read(final JsonReader in) throws IOException {
            if (JsonToken.STRING == in.peek()) {
                return (T) new ContainerConfig(in.nextString());
            }

            return delegate.read(in);
        }

    }.nullSafe();
}

---

From source file:com.ibm.og.json.type.FilesizeConfigTypeAdapterFactory.java

License:Open Source License

@Override
@SuppressWarnings("unchecked")
public <T> TypeAdapter<T> create(final Gson gson, final TypeToken<T> type) {
    final Class<T> rawType = (Class<T>) type.getRawType();
    if (!FilesizeConfig.class.equals(rawType)) {
        return null;
    }/*  ww w .  j a  va 2 s  .c  o  m*/

    final TypeAdapter<T> delegate = gson.getDelegateAdapter(this, type);

    return new TypeAdapter<T>() {
        @Override
        public void write(final JsonWriter out, final T value) throws IOException {
            delegate.write(out, value);
        }

        @Override
        public T read(final JsonReader in) throws IOException {
            if (JsonToken.NUMBER == in.peek()) {
                return (T) new FilesizeConfig(in.nextDouble());
            }

            return delegate.read(in);
        }

    }.nullSafe();
}

---

From source file:com.ibm.og.json.type.OperationConfigTypeAdapterFactory.java

License:Open Source License

@Override
@SuppressWarnings("unchecked")
public <T> TypeAdapter<T> create(final Gson gson, final TypeToken<T> type) {
    final Class<T> rawType = (Class<T>) type.getRawType();
    if (!OperationConfig.class.equals(rawType)) {
        return null;
    }//from w ww  .  j a v a2s . co  m

    final TypeAdapter<T> delegate = gson.getDelegateAdapter(this, type);

    return new TypeAdapter<T>() {
        @Override
        public void write(final JsonWriter out, final T value) throws IOException {
            delegate.write(out, value);
        }

        @Override
        public T read(final JsonReader in) throws IOException {
            if (JsonToken.NUMBER == in.peek()) {
                return (T) new OperationConfig(in.nextDouble());
            }

            return delegate.read(in);
        }
    }.nullSafe();
}

---

From source file:com.ibm.og.json.type.SelectionConfigTypeAdapterFactory.java

License:Open Source License

@Override
@SuppressWarnings("unchecked")
public <T> TypeAdapter<T> create(final Gson gson, final TypeToken<T> type) {
    final Class<T> rawType = (Class<T>) type.getRawType();
    if (!SelectionConfig.class.equals(rawType)) {
        return null;
    }/*from ww  w  . ja  v a 2s . co m*/

    final TypeAdapter<T> delegate = gson.getDelegateAdapter(this, type);

    return new TypeAdapter<T>() {
        @Override
        public void write(final JsonWriter out, final T value) throws IOException {
            delegate.write(out, value);
        }

        @Override
        public T read(final JsonReader in) throws IOException {
            final Class<?> genericType = (Class<?>) ((ParameterizedType) type.getType())
                    .getActualTypeArguments()[0];
            final JsonElement element = gson.getAdapter(JsonElement.class).read(in);

            if (element.isJsonObject()) {
                final JsonObject object = element.getAsJsonObject();
                if (object.entrySet().size() <= 2 && object.has("choices")) {
                    return delegate.fromJsonTree(object);
                } else {
                    return (T) choice(genericType, object);
                }
            } else if (element.isJsonArray()) {
                return (T) choiceList(genericType, element.getAsJsonArray());
            }

            return (T) choice(genericType, element);
        }

        private <S> SelectionConfig<S> choice(final Class<S> clazz, final JsonElement element)
                throws IOException {
            final SelectionConfig<S> config = new SelectionConfig<S>();
            config.choices.add(gson.getAdapter(choiceToken(clazz)).fromJsonTree(element));
            return config;
        }

        private <S> SelectionConfig<S> choiceList(final Class<S> clazz, final JsonArray array)
                throws IOException {
            final SelectionConfig<S> config = new SelectionConfig<S>();
            config.choices = gson.getAdapter(choiceListToken(clazz)).fromJsonTree(array);
            return config;
        }

        // must use guava's TypeToken implementation to create a TypeToken instance with a dynamic
        // type; then convert back to gson's TypeToken implementation for use in calling code. See:
        // https://groups.google.com/forum/#!topic/guava-discuss/HdBuiO44uaw
        private <S> TypeToken<ChoiceConfig<S>> choiceToken(final Class<S> clazz) {
            @SuppressWarnings("serial")
            final com.google.common.reflect.TypeToken<ChoiceConfig<S>> choiceToken = new com.google.common.reflect.TypeToken<ChoiceConfig<S>>() {
            }.where(new TypeParameter<S>() {
            }, com.google.common.reflect.TypeToken.of(clazz));

            return (TypeToken<ChoiceConfig<S>>) TypeToken.get(choiceToken.getType());
        }

        private <S> TypeToken<List<ChoiceConfig<S>>> choiceListToken(final Class<S> clazz) {
            @SuppressWarnings("serial")
            final com.google.common.reflect.TypeToken<List<ChoiceConfig<S>>> choiceToken = new com.google.common.reflect.TypeToken<List<ChoiceConfig<S>>>() {
            }.where(new TypeParameter<S>() {
            }, com.google.common.reflect.TypeToken.of(clazz));

            return (TypeToken<List<ChoiceConfig<S>>>) TypeToken.get(choiceToken.getType());
        }
    }.nullSafe();
}

---

From source file:com.ibm.og.util.json.type.CaseInsensitiveEnumTypeAdapterFactory.java

License:Open Source License

@Override
public <T> TypeAdapter<T> create(final Gson gson, final TypeToken<T> type) {
    @SuppressWarnings("unchecked")
    final Class<T> rawType = (Class<T>) type.getRawType();
    if (!rawType.isEnum()) {
        return null;
    }/*from  w w  w .j  a v a 2 s .  c o m*/

    return new TypeAdapter<T>() {
        @Override
        public void write(final JsonWriter out, final T value) throws IOException {
            out.value(value.toString().toLowerCase(Locale.US));
        }

        @Override
        @SuppressWarnings("unchecked")
        public T read(final JsonReader in) throws IOException {
            final String s = in.nextString().toUpperCase(Locale.US);
            for (final Object enumEntry : rawType.getEnumConstants()) {
                if (enumEntry.toString().equals(s)) {
                    return (T) enumEntry;
                }
            }
            throw new JsonSyntaxException(String.format("Could not parse into enum [%s]", s));
        }
    }.nullSafe();
}

---

From source file:com.ibm.watson.developer_cloud.discovery.v1.model.collection.field.FieldAdapterFactory.java

License:Open Source License

@SuppressWarnings("unchecked")
@Override// w  ww  .  j ava2  s  . co m
public <T> TypeAdapter<T> create(Gson gson, TypeToken<T> typeToken) {
    if (!Field.class.isAssignableFrom(typeToken.getRawType())) {
        return null;
    }
    return (TypeAdapter<T>) new FieldAdapter();
}

---

From source file:com.ibm.watson.developer_cloud.discovery.v1.model.common.EagerNumberAdapterFactory.java

License:Open Source License

@SuppressWarnings("unchecked")
@Override//from   w w  w . jav a2 s.  c  o  m
public <T> TypeAdapter<T> create(Gson gson, TypeToken<T> typeToken) {
    if (!Number.class.isAssignableFrom(typeToken.getRawType())) {
        return null;
    }
    return (TypeAdapter<T>) new NumberTypeAdapter();
}

---

From source file:com.ibm.watson.developer_cloud.discovery.v1.model.query.AggregationAdapterFactory.java

License:Open Source License

@SuppressWarnings("unchecked")
@Override//from w w  w  .  j  a  va 2s.c  om
public <T> TypeAdapter<T> create(Gson gson, TypeToken<T> typeToken) {
    if (typeToken.getRawType() != Aggregation.class) {
        return null;
    }
    return (TypeAdapter<T>) new QueryAggregationTypeAdapter(gson);
}

---

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