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:org.jboss.tools.aerogear.hybrid.core.plugin.registry.CordovaPluginRegistryManager.java

License:Open Source License

private void readPluginInfo(JsonReader reader, CordovaRegistryPluginInfo plugin) throws IOException {
    Assert.isNotNull(plugin);/*from w  w w .jav  a2 s. c om*/
    reader.beginObject();

    while (reader.hasNext()) {
        JsonToken token = reader.peek();
        switch (token) {
        case NAME: {
            String name = reader.nextName();
            if ("name".equals(name)) {
                plugin.setName(reader.nextString());
                break;
            }
            if ("description".equals(name)) {
                plugin.setDescription(reader.nextString());
                break;
            }
            if ("keywords".equals(name)) {
                parseKeywords(reader, plugin);
                break;
            }
            if ("maintainers".equals(name)) {
                parseMaintainers(reader, plugin);
                break;
            }
            if ("dist-tags".equals(name)) {
                parseLatestVersion(reader, plugin);
                break;
            }
            if ("versions".equals(name) && plugin instanceof CordovaRegistryPlugin) {
                parseDetailedVersions(reader, (CordovaRegistryPlugin) plugin);
                break;
            }
            if ("dist".equals(name) && plugin instanceof CordovaRegistryPluginVersion) {
                parseDistDetails(reader, (CordovaRegistryPluginVersion) plugin);
                break;
            }
            if ("license".equals(name) && plugin instanceof CordovaRegistryPluginVersion) {
                CordovaRegistryPluginVersion v = (CordovaRegistryPluginVersion) plugin;
                v.setLicense(reader.nextString());
                break;
            }
            break;
        }

        default:
            reader.skipValue();
            break;
        }
    }
    reader.endObject();
}

From source file:org.jboss.tools.aerogear.hybrid.core.plugin.registry.CordovaPluginRegistryManager.java

License:Open Source License

private void parseDistDetails(JsonReader reader, CordovaRegistryPluginVersion plugin) throws IOException {
    reader.beginObject();/*from w ww.j a v  a 2  s  .  c om*/
    JsonToken token = reader.peek();
    while (token != JsonToken.END_OBJECT) {
        switch (token) {
        case NAME:
            String name = reader.nextName();
            if ("shasum".equals(name)) {
                plugin.setDistributionSHASum(reader.nextString());
                break;
            }
            if ("tarball".equals(name)) {
                plugin.setDistributionTarball(reader.nextString());
                break;
            }
            break;

        default:
            reader.skipValue();
            break;
        }
        token = reader.peek();
    }
    reader.endObject();
}

From source file:org.jboss.tools.aerogear.hybrid.core.plugin.registry.CordovaPluginRegistryManager.java

License:Open Source License

private void parseDetailedVersions(JsonReader reader, CordovaRegistryPlugin plugin) throws IOException {
    reader.beginObject();//versions
    JsonToken token = reader.peek();
    while (token != JsonToken.END_OBJECT) {
        switch (token) {
        case NAME:
            CordovaRegistryPluginVersion version = new CordovaRegistryPluginVersion();
            version.setVersionNumber(reader.nextName());
            readPluginInfo(reader, version);
            plugin.addVersion(version);//from  ww w . j av  a 2  s.com
            break;

        default:
            reader.skipValue();
            break;
        }
        token = reader.peek();
    }
    reader.endObject();
}

From source file:org.jboss.tools.aerogear.hybrid.core.plugin.registry.CordovaPluginRegistryManager.java

License:Open Source License

private void parseLatestVersion(JsonReader reader, CordovaRegistryPluginInfo plugin) throws IOException {
    reader.beginObject();//  w  ww.j a v a 2 s  . c  om
    JsonToken token = reader.peek();
    while (token != JsonToken.END_OBJECT) {
        switch (token) {
        case NAME:
            String tag = reader.nextName();
            if ("latest".equals(tag)) {
                plugin.setLatestVersion(reader.nextString());
            }
            break;

        default:
            reader.skipValue();
            break;
        }
        token = reader.peek();
    }
    reader.endObject();
}

From source file:org.jboss.tools.aerogear.hybrid.core.plugin.registry.CordovaPluginRegistryManager.java

License:Open Source License

private void parseMaintainers(JsonReader reader, CordovaRegistryPluginInfo plugin) throws IOException {
    reader.beginArray();//  w  ww  . ja v  a 2 s  . co  m
    String name = null, email = null;
    JsonToken token = reader.peek();

    while (token != JsonToken.END_ARRAY) {
        switch (token) {
        case BEGIN_OBJECT:
            reader.beginObject();
            name = email = null;
            break;
        case END_OBJECT:
            reader.endObject();
            plugin.addMaintainer(email, name);
            break;
        case NAME:
            String tagName = reader.nextName();
            if ("name".equals(tagName)) {
                name = reader.nextString();
                break;
            }
            if ("email".equals(tagName)) {
                email = reader.nextString();
                break;
            }
        default:
            Assert.isTrue(false, "Unexpected token");
            break;
        }
        token = reader.peek();
    }
    reader.endArray();
}

From source file:org.jclouds.http.functions.ParseFirstJsonValueNamed.java

License:Apache License

@Override
public T apply(HttpResponse arg0) {
    if (arg0.getPayload() == null)
        return nothing();
    JsonReader reader = null;
    try {/*from  w ww.j a v  a 2 s  .c o m*/
        reader = new JsonReader(new InputStreamReader(arg0.getPayload().getInput()));
        // in case keys are not in quotes
        reader.setLenient(true);
        AtomicReference<String> name = Atomics.newReference();
        JsonToken token = reader.peek();
        for (; token != JsonToken.END_DOCUMENT
                && nnn(reader, token, name); token = skipAndPeek(token, reader)) {
        }
        if (name.get() == null) {
            logger.trace("did not object named %s in json from response %s", nameChoices, arg0);
            return nothing();
        } else if (nameChoices.contains(name.get())) {
            return json.delegate().<T>fromJson(reader, type.getType());
        } else {
            return nothing();
        }
    } catch (IOException e) {
        throw new RuntimeException(
                String.format("error reading from stream, parsing object named %s from http response %s",
                        nameChoices, arg0),
                e);
    } finally {
        Closeables2.closeQuietly(reader);
        arg0.getPayload().release();
    }
}

From source file:org.jclouds.http.functions.ParseFirstJsonValueNamed.java

License:Apache License

private JsonToken skipAndPeek(JsonToken token, JsonReader reader) throws IOException {
    switch (token) {
    case BEGIN_ARRAY:
        reader.beginArray();//from   ww  w. j  a  v  a 2 s  .  c  o m
        break;
    case END_ARRAY:
        reader.endArray();
        break;
    case BEGIN_OBJECT:
        reader.beginObject();
        break;
    case END_OBJECT:
        reader.endObject();
        break;
    case NAME:
        // NOTE that we have already advanced on NAME in the eval block;
        break;
    case STRING:
        reader.nextString();
        break;
    case NUMBER:
        reader.nextString();
        break;
    case BOOLEAN:
        reader.nextBoolean();
        break;
    case NULL:
        reader.nextNull();
        break;
    case END_DOCUMENT:
        break;
    }
    return reader.peek();
}

From source file:org.jclouds.json.internal.OptionalTypeAdapterFactory.java

License:Apache License

protected <E> TypeAdapter<Optional<E>> newOptionalAdapter(final TypeAdapter<E> elementAdapter) {
    return new TypeAdapter<Optional<E>>() {
        public void write(JsonWriter out, Optional<E> value) throws IOException {
            if (!value.isPresent()) {
                out.nullValue();/*from   www  .  j a  v a 2  s .  c o m*/
                return;
            }
            elementAdapter.write(out, value.get());
        }

        public Optional<E> read(JsonReader in) throws IOException {
            Optional<E> result = Optional.absent();
            if (in.peek() == JsonToken.NULL) {
                in.nextNull();
            } else {
                E element = elementAdapter.read(in);
                if (element != null) {
                    result = Optional.of(element);
                }
            }
            return result;
        }
    };
}

From source file:org.jspare.core.serializer.converter.OptionalTypeAdapter.java

License:Apache License

@Override
public Optional<E> read(JsonReader in) throws IOException {
    final JsonToken peek = in.peek();
    if (peek != JsonToken.NULL) {
        return Optional.ofNullable(adapter.read(in));
    }//w ww  . j  a  va2 s  .  c o  m
    return Optional.empty();
}

From source file:org.kairosdb.core.http.rest.json.DataPointsParser.java

License:Apache License

public ValidationErrors parse() throws IOException, DatastoreException {
    long start = System.currentTimeMillis();
    ValidationErrors validationErrors = new ValidationErrors();

    JsonReader reader = new JsonReader(inputStream);

    try {//from   w ww  .  j a v  a  2s . c o m
        int metricCount = 0;

        if (reader.peek().equals(JsonToken.BEGIN_ARRAY)) {
            try {
                reader.beginArray();

                while (reader.hasNext()) {
                    NewMetric metric = parseMetric(reader);
                    validateAndAddDataPoints(metric, validationErrors, metricCount);
                    metricCount++;
                }
            } catch (EOFException e) {
                validationErrors.addErrorMessage("Invalid json. No content due to end of input.");
            }

            reader.endArray();
        } else if (reader.peek().equals(JsonToken.BEGIN_OBJECT)) {
            NewMetric metric = parseMetric(reader);
            validateAndAddDataPoints(metric, validationErrors, 0);
        } else
            validationErrors.addErrorMessage("Invalid start of json.");

    } catch (EOFException e) {
        validationErrors.addErrorMessage("Invalid json. No content due to end of input.");
    } finally {
        reader.close();
    }

    ingestTime = (int) (System.currentTimeMillis() - start);

    return validationErrors;
}