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

Introduction

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

Prototype

public void nextNull() throws IOException

Source Link

Document

Consumes the next token from the JSON stream and asserts that it is a literal null.

Usage

From source file:eu.jtzipi.project0.common.json.impl.GsonReadWrite.java

License:Apache License

static Map<String, Object> parseObject(final JsonReader jsonReader) throws IOException {

    Map<String, Object> map = new HashMap<>();
    String tempKey;//  w  w w . j a v a2 s .  com
    JsonToken tok;
    //
    while (jsonReader.hasNext()) {

        // since we want to restore a map we assue a key/value pair
        tempKey = jsonReader.nextName();
        //
        tok = jsonReader.peek();
        // we reach the end of this array
        if (JsonToken.END_ARRAY == tok) {
            jsonReader.endArray();
            // return
            break;
        }
        // what token
        switch (tok) {
        // if array/map - parse and append
        case BEGIN_ARRAY:
            map.put(tempKey, parseArray(jsonReader));
            break;
        case BEGIN_OBJECT:
            map.put(tempKey, parseObject(jsonReader));
            break;
        // if raw type
        case STRING:
            map.put(tempKey, jsonReader.nextString());
            break;
        case BOOLEAN:
            map.put(tempKey, jsonReader.nextBoolean());
            break;
        case NUMBER:
            map.put(tempKey, jsonReader.nextDouble());
            break;
        // if null , add null and consume
        case NULL:
            map.put(tempKey, null);
            jsonReader.nextNull();
            break;

        // all other cases are errors
        default:
            throw new IllegalStateException("Wrong Token '" + tok + "' , while parsing an array");
        }
    }

    return map;
}

From source file:io.datakernel.datagraph.server.GsonClassTypeAdapter.java

License:Apache License

@Override
public Class<?> read(JsonReader in) throws IOException {
    if (in.peek() == JsonToken.NULL) {
        in.nextNull();
        return null;
    }/*w w  w .j ava2  s. co m*/
    try {
        String className = in.nextString();
        return Class.forName(className);
    } catch (ClassNotFoundException e) {
        throw new IOException(e);
    }
}

From source file:io.datakernel.datagraph.server.GsonInetSocketAddressAdapter.java

License:Apache License

@Override
public InetSocketAddress read(JsonReader reader) throws IOException {
    if (reader.peek() == JsonToken.NULL) {
        reader.nextNull();
        return null;
    }/* w  w w .jav  a2s .  c  o  m*/
    try {
        Iterator<String> split = Splitter.on(':').split(reader.nextString()).iterator();
        InetAddress hostname = InetAddresses.forString(split.next());
        int port = Integer.parseInt(split.next());
        checkArgument(!split.hasNext());
        return new InetSocketAddress(hostname, port);
    } catch (IOException e) {
        throw e;
    } catch (Exception e) {
        throw new IOException(e);
    }
}

From source file:io.datakernel.datagraph.server.GsonStreamIdAdapter.java

License:Apache License

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

From source file:io.grpc.internal.JsonParser.java

License:Apache License

private static Void parseJsonNull(JsonReader jr) throws IOException {
    jr.nextNull();
    return null;
}

From source file:io.prediction.workflow.JavaQueryTypeAdapterFactory.java

License:Apache License

@Override
public <T> TypeAdapter<T> create(Gson gson, TypeToken<T> type) {
    if (type.getRawType().equals(JavaQuery.class)) {
        return (TypeAdapter<T>) new TypeAdapter<JavaQuery>() {
            public void write(JsonWriter out, JavaQuery value) throws IOException {
                if (value == null) {
                    out.nullValue();/*  w w w. j  a  v a2  s  .c om*/
                } else {
                    out.beginObject();
                    out.name("q").value(value.getQ().toUpperCase());
                    out.endObject();
                }
            }

            public JavaQuery read(JsonReader reader) throws IOException {
                if (reader.peek() == JsonToken.NULL) {
                    reader.nextNull();
                    return null;
                } else {
                    reader.beginObject();
                    reader.nextName();
                    String q = reader.nextString();
                    reader.endObject();
                    return new JavaQuery(q.toUpperCase());
                }
            }
        };
    } else {
        return null;
    }
}

From source file:io.ucoin.ucoinj.core.client.model.bma.gson.EndpointAdapter.java

License:Open Source License

@Override
public NetworkPeering.Endpoint read(JsonReader reader) throws IOException {
    if (reader.peek() == com.google.gson.stream.JsonToken.NULL) {
        reader.nextNull();
        return null;
    }/*from  w  w w  .j  av a 2  s  . com*/

    String ept = reader.nextString();
    ArrayList<String> parts = new ArrayList<>(Arrays.asList(ept.split(" ")));
    NetworkPeering.Endpoint endpoint = new NetworkPeering.Endpoint();
    endpoint.port = Integer.parseInt(parts.remove(parts.size() - 1));
    for (String word : parts) {
        if (InetAddressUtils.isIPv4Address(word)) {
            endpoint.ipv4 = word;
        } else if (InetAddressUtils.isIPv6Address(word)) {
            endpoint.ipv6 = word;
        } else if (word.startsWith("http")) {
            endpoint.url = word;
        } else {
            try {
                endpoint.protocol = EndpointProtocol.valueOf(word);
            } catch (IllegalArgumentException e) {
                // skip this part
            }
        }
    }

    if (endpoint.protocol == null) {
        endpoint.protocol = EndpointProtocol.UNDEFINED;
    }

    return endpoint;
}

From source file:it.units.inginf.male.outputs.gson.DoubleTypeAdapter.java

License:Open Source License

@Override
public Double read(JsonReader in) throws IOException {
    if (in.peek() == JsonToken.NULL) {
        in.nextNull();
        return null;
    }// w w  w. j a  va 2s  .  c o  m
    Double nextDouble;
    try {
        //nextDouble parses as a double or fallback to parsing a string using Java parseDouble which MANAGES NaN
        nextDouble = in.nextDouble();
    } catch (NumberFormatException ex) {
        nextDouble = Double.NaN;
    }
    return nextDouble;
}

From source file:net.chris54721.infinitycubed.utils.LowercaseEnumTypeAdapterFactory.java

License:Apache License

public <T> TypeAdapter<T> create(Gson gson, TypeToken<T> type) {
    @SuppressWarnings("unchecked")
    Class<T> rawType = (Class<T>) type.getRawType();
    if (!rawType.isEnum()) {
        return null;
    }//from w w  w  .  j a va2 s.co  m

    final Map<String, T> lowercaseToConstant = new HashMap<String, T>();
    for (T constant : rawType.getEnumConstants()) {
        lowercaseToConstant.put(toLowercase(constant), constant);
    }

    return new TypeAdapter<T>() {
        public void write(JsonWriter out, T value) throws IOException {
            if (value == null) {
                out.nullValue();
            } else {
                out.value(toLowercase(value));
            }
        }

        public T read(JsonReader reader) throws IOException {
            if (reader.peek() == JsonToken.NULL) {
                reader.nextNull();
                return null;
            } else {
                return lowercaseToConstant.get(reader.nextString());
            }
        }
    };
}

From source file:net.daporkchop.toobeetooteebot.text.EnumTypeAdapterFactory.java

License:Open Source License

public <T> TypeAdapter<T> create(Gson p_create_1_, TypeToken<T> p_create_2_) {
    Class<T> oclass = (Class<T>) p_create_2_.getRawType();

    if (!oclass.isEnum()) {
        return null;
    } else {/*from  ww  w .  j  ava  2s . c  o m*/
        final Map<String, T> map = Maps.newHashMap();

        for (T t : oclass.getEnumConstants()) {
            map.put(this.getName(t), t);
        }

        return new TypeAdapter<T>() {
            public void write(JsonWriter p_write_1_, T p_write_2_) throws IOException {
                if (p_write_2_ == null) {
                    p_write_1_.nullValue();
                } else {
                    p_write_1_.value(EnumTypeAdapterFactory.this.getName(p_write_2_));
                }
            }

            public T read(JsonReader p_read_1_) throws IOException {
                if (p_read_1_.peek() == JsonToken.NULL) {
                    p_read_1_.nextNull();
                    return null;
                } else {
                    return map.get(p_read_1_.nextString());
                }
            }
        };
    }
}