Example usage for com.google.gson.stream JsonReader peek

Introduction

In this page you can find the example usage for com.google.gson.stream JsonReader peek.

Prototype

public JsonToken peek() throws IOException 

Source Link

Document

Returns the type of the next token without consuming it.

Usage

From source file:com.greensopinion.finance.services.persistence.CategoriesTypeAdapter.java

License:Apache License

@Override
public Categories read(JsonReader reader) throws IOException {
    reader.beginObject();/*from   w w w . ja v a 2  s. c o  m*/
    checkState(NAME_CATEGORIES.equals(reader.nextName()));
    reader.beginArray();

    ImmutableList.Builder<Category> elements = ImmutableList.<Category>builder();
    while (reader.hasNext()) {
        if (reader.peek() == JsonToken.BEGIN_OBJECT) {
            elements.add(gson.getAdapter(Category.class).read(reader));
        } else {
            elements.add(readCategory(reader.nextString()));
        }
    }
    reader.endArray();
    reader.endObject();

    return new Categories(elements.build());
}

---

From source file:com.greensopinion.finance.services.persistence.DateTypeAdapter.java

License:Apache License

@Override
public Date read(JsonReader reader) throws IOException {
    if (reader.peek().equals(JsonToken.NULL)) {
        reader.nextNull();/*from  w w w.  j  a v  a 2 s  .  c  o  m*/
        return null;
    }
    String value = reader.nextString();
    try {
        return dateFormat().parse(value);
    } catch (ParseException e) {
        throw new IOException(format("Expected a date but got \"{0}\"", value));
    }
}

---

From source file:com.gs.reladomo.serial.gson.GsonWrappedListTypedAdapter.java

License:Apache License

@Override
public SerializedList<U, T> read(JsonReader jsonReader) throws IOException {
    ReladomoDeserializer deserializer;//from w ww  . jav a 2s.c o m
    if (this.typeClass == null) {
        deserializer = new ReladomoDeserializer();
    } else {
        deserializer = new ReladomoDeserializer(typeClass);
    }
    deserializer.setIgnoreUnknown();
    JsonDeserializerState state = JsonDeserializerState.ListStartState.INSTANCE;
    while (true) {
        JsonToken nextToken = jsonReader.peek();
        //BEGIN_ARRAY, END_ARRAY, BEGIN_OBJECT, END_OBJECT, NAME, STRING, NUMBER, BOOLEAN, NULL, END_DOCUMENT;
        if (JsonToken.BEGIN_OBJECT == nextToken) {
            jsonReader.beginObject();
            state = state.startObject(deserializer);
        } else if (JsonToken.END_OBJECT == nextToken) {
            jsonReader.endObject();
            state = state.endObject(deserializer);
        } else if (JsonToken.BEGIN_ARRAY == nextToken) {
            jsonReader.beginArray();
            state = state.startArray(deserializer);
        } else if (JsonToken.END_ARRAY == nextToken) {
            jsonReader.endArray();
            state = state.endArray(deserializer);
        } else if (JsonToken.BOOLEAN == nextToken) {
            if (jsonReader.nextBoolean()) {
                state = state.valueTrue(deserializer);
            } else {
                state = state.valueFalse(deserializer);
            }
        } else if (JsonToken.NAME == nextToken) {
            String name = jsonReader.nextName();
            state = state.fieldName(name, deserializer);
        } else if (JsonToken.NUMBER == nextToken) {
            String value = jsonReader.nextString();
            state = state.valueString(value, deserializer); // we do the parsing to avoid precision loss
        } else if (JsonToken.STRING == nextToken) {
            String value = jsonReader.nextString();
            Attribute attribute = deserializer.getCurrentAttribute();
            if (attribute instanceof TimestampAttribute) {
                Timestamp timestamp = GsonReladomoTypeAdapterSerialWriter.jsonToTimestamp(value);
                state = state.valueTimestamp(timestamp, deserializer);
            } else {
                state = state.valueString(value, deserializer);
            }
        } else if (JsonToken.NULL == nextToken) {
            jsonReader.nextNull();
            state = state.valueNull(deserializer);
        } else if (JsonToken.END_DOCUMENT == nextToken) {
            break;
        }
    }
    return deserializer.getDeserializedResultAsList();
}

---

From source file:com.gs.reladomo.serial.gson.GsonWrappedTypedAdapter.java

License:Apache License

@Override
public Serialized<T> read(JsonReader jsonReader) throws IOException {
    ReladomoDeserializer deserializer;//from   w w  w .ja v  a  2  s.  c  o m
    if (this.typeClass == null) {
        deserializer = new ReladomoDeserializer();
    } else {
        deserializer = new ReladomoDeserializer(typeClass);
    }
    deserializer.setIgnoreUnknown();
    JsonDeserializerState state = JsonDeserializerState.NormalParserState.INSTANCE;
    while (true) {
        JsonToken nextToken = jsonReader.peek();
        //BEGIN_ARRAY, END_ARRAY, BEGIN_OBJECT, END_OBJECT, NAME, STRING, NUMBER, BOOLEAN, NULL, END_DOCUMENT;
        if (JsonToken.BEGIN_OBJECT == nextToken) {
            jsonReader.beginObject();
            state = state.startObject(deserializer);
        } else if (JsonToken.END_OBJECT == nextToken) {
            jsonReader.endObject();
            state = state.endObject(deserializer);
        } else if (JsonToken.BEGIN_ARRAY == nextToken) {
            jsonReader.beginArray();
            state = state.startArray(deserializer);
        } else if (JsonToken.END_ARRAY == nextToken) {
            jsonReader.endArray();
            state = state.endArray(deserializer);
        } else if (JsonToken.BOOLEAN == nextToken) {
            if (jsonReader.nextBoolean()) {
                state = state.valueTrue(deserializer);
            } else {
                state = state.valueFalse(deserializer);
            }
        } else if (JsonToken.NAME == nextToken) {
            String name = jsonReader.nextName();
            state = state.fieldName(name, deserializer);
        } else if (JsonToken.NUMBER == nextToken) {
            String value = jsonReader.nextString();
            state = state.valueString(value, deserializer); // we do the parsing to avoid precision loss
        } else if (JsonToken.STRING == nextToken) {
            String value = jsonReader.nextString();
            Attribute attribute = deserializer.getCurrentAttribute();
            if (attribute instanceof TimestampAttribute) {
                Timestamp timestamp = GsonReladomoTypeAdapterSerialWriter.jsonToTimestamp(value);
                state = state.valueTimestamp(timestamp, deserializer);
            } else {
                state = state.valueString(value, deserializer);
            }
        } else if (JsonToken.NULL == nextToken) {
            jsonReader.nextNull();
            state = state.valueNull(deserializer);
        } else if (JsonToken.END_DOCUMENT == nextToken) {
            break;
        }
    }
    return deserializer.getDeserializedResult();
}

---

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  www .ja v  a2  s.  c  om*/

    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  .  ja va2 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 w  w. j a  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 {
            if (JsonToken.NUMBER == in.peek()) {
                return (T) new OperationConfig(in.nextDouble());
            }

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

---

From source file:com.ibm.watson.developer_cloud.alchemy.v1.util.ImageKeywordTypeAdapter.java

License:Open Source License

@Override
public ImageKeyword read(JsonReader reader) throws IOException {
    if (reader.peek() == JsonToken.NULL) {
        reader.nextNull();/*  www .  j a v a2  s. c  o  m*/
        return null;
    }

    final ImageKeyword ImageKeyword = new ImageKeyword();
    reader.beginObject();
    while (reader.hasNext()) {
        final String name = reader.nextName();

        if (name.equals("text")) {
            final String text = reader.nextString();
            ImageKeyword.setText(text);
        } else if (name.equals("score")) {
            final String score = reader.nextString();
            if (score != null && !score.isEmpty())
                ImageKeyword.setScore(Double.valueOf(score));
        } else {
            reader.skipValue();
        }
    }
    reader.endObject();
    return ImageKeyword;
}

---

From source file:com.ibm.watson.developer_cloud.alchemy.v1.util.PublicationDateTypeAdapter.java

License:Open Source License

@Override
public PublicationDate read(JsonReader reader) throws IOException {
    if (reader.peek() == JsonToken.NULL) {
        reader.nextNull();//from  w  ww.j  a v a2 s  .c  o  m
        return null;
    }

    final PublicationDate publicationDate = new PublicationDate();
    publicationDate.setConfident(true);
    reader.beginObject();
    while (reader.hasNext()) {
        final String name = reader.nextName();

        if (name.equals("confident")) {
            final String confidentAsString = reader.nextString();
            publicationDate.setConfident(confidentAsString == null || !confidentAsString.equals("no"));
        } else if (name.equals("date")) {
            final String dateAsString = reader.nextString();
            if (dateAsString != null && !dateAsString.isEmpty())
                try {
                    publicationDate.setDate(df.parse(dateAsString));
                } catch (final ParseException e) {
                    log.log(Level.SEVERE, "Error parsing: " + dateAsString, e);
                }
        } else {
            reader.skipValue();
        }
    }
    reader.endObject();
    return publicationDate;
}

---

From source file:com.ibm.watson.developer_cloud.alchemy.v1.util.TaxonomyTypeAdapter.java

License:Open Source License

@Override
public Taxonomy read(JsonReader reader) throws IOException {
    if (reader.peek() == JsonToken.NULL) {
        reader.nextNull();/*from   w ww  .  j a v  a 2 s . c  o m*/
        return null;
    }

    final Taxonomy taxonomy = new Taxonomy();
    taxonomy.setConfident(true);

    reader.beginObject();
    while (reader.hasNext()) {
        final String name = reader.nextName();

        if (name.equals("confident")) {
            final String confidentAsString = reader.nextString();
            taxonomy.setConfident(confidentAsString == null || !confidentAsString.equals("no"));
        } else if (name.equals("label")) {
            final String label = reader.nextString();
            taxonomy.setLabel(label);
        } else if (name.equals("score")) {
            final Double score = reader.nextDouble();
            taxonomy.setScore(score);
        } else {
            reader.skipValue();
        }
    }
    reader.endObject();
    return taxonomy;
}

---

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