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

List of usage examples for com.google.gson.stream JsonReader hasNext

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Introduction

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

Prototype

public boolean hasNext() throws IOException

Source Link

Document

Returns true if the current array or object has another element.

Usage

From source file:org.eclipse.packagedrone.repo.channel.apm.ChannelReader.java

License:Open Source License

private List<ValidationMessage> readValidationMessages(final JsonReader jr) throws IOException {
    final List<ValidationMessage> result = new LinkedList<>();

    jr.beginArray();//from  w  w w . ja  va  2s  . c  om
    while (jr.hasNext()) {
        result.add(readValidationMessage(jr));
    }
    jr.endArray();

    return result;
}

From source file:org.eclipse.packagedrone.repo.channel.apm.ChannelReader.java

License:Open Source License

private ValidationMessage readValidationMessage(final JsonReader jr) throws IOException {
    String aspectId = null;/*from   w  w  w.  ja  va 2s .c o  m*/
    Severity severity = null;
    String message = null;
    Set<String> artifactIds = Collections.emptySet();

    jr.beginObject();
    while (jr.hasNext()) {
        final String name = jr.nextName();
        switch (name) {
        case "aspectId":
            aspectId = jr.nextString();
            break;
        case "severity":
            severity = Severity.valueOf(jr.nextString());
            break;
        case "message":
            message = jr.nextString();
            break;
        case "artifactIds":
            artifactIds = readSet(jr);
            break;
        }
    }
    jr.endObject();

    if (aspectId == null || severity == null || message == null) {
        throw new IOException("Missing values in validation message");
    }

    return new ValidationMessage(aspectId, severity, message, artifactIds);
}

From source file:org.eclipse.packagedrone.repo.channel.apm.ChannelReader.java

License:Open Source License

private Set<String> readSet(final JsonReader jr) throws IOException {
    final Set<String> result = new HashSet<>();

    jr.beginArray();/* ww  w .  java  2s.c  om*/
    while (jr.hasNext()) {
        result.add(jr.nextString());
    }
    jr.endArray();

    return result;
}

From source file:org.eclipse.packagedrone.repo.channel.apm.ChannelReader.java

License:Open Source License

private Map<MetaKey, CacheEntryInformation> readCacheEntries(final JsonReader jr) throws IOException {
    final Map<MetaKey, CacheEntryInformation> result = new HashMap<>();

    jr.beginObject();/*from www . j a v a2 s  . com*/
    while (jr.hasNext()) {
        final String entryName = jr.nextName();
        jr.beginObject();

        String name = null;
        Long size = null;
        String mimeType = null;
        Instant timestamp = null;

        while (jr.hasNext()) {
            final String ele = jr.nextName();
            switch (ele) {
            case "name":
                name = jr.nextString();
                break;
            case "size":
                size = jr.nextLong();
                break;
            case "mimeType":
                mimeType = jr.nextString();
                break;
            case "timestamp":
                timestamp = readTime(jr);
                break;
            default:
                jr.skipValue();
                break;
            }
        }

        if (name == null || size == null || mimeType == null || timestamp == null) {
            throw new IOException("Invalid format");
        }

        jr.endObject();

        final MetaKey key = MetaKey.fromString(entryName);

        result.put(key, new CacheEntryInformation(key, name, size, mimeType, timestamp));
    }
    jr.endObject();

    return result;
}

From source file:org.eclipse.packagedrone.repo.MetaKeys.java

License:Open Source License

public static Map<MetaKey, String> readJson(final Reader input) throws IOException {
    @SuppressWarnings("resource")
    final JsonReader reader = new JsonReader(input);

    final Map<MetaKey, String> result = new HashMap<>();

    reader.beginObject();//from   ww w .  j  a  v  a2s .c o m

    while (reader.hasNext()) {
        final String name = reader.nextName();
        if (reader.peek() == JsonToken.NULL) {
            reader.nextNull();
        } else {
            result.put(MetaKey.fromString(name), reader.nextString());
        }
    }

    reader.endObject();

    return result;
}

From source file:org.eclipse.recommenders.utils.gson.MultisetTypeAdapterFactory.java

License:Open Source License

private <E> TypeAdapter<Multiset<E>> newMultisetAdapter(final TypeAdapter<E> elementAdapter) {
    return new TypeAdapter<Multiset<E>>() {
        public void write(JsonWriter out, Multiset<E> multiset) throws IOException {
            if (multiset == null) {
                out.nullValue();//from w  w w.j  a v  a2  s  .  c o  m
                return;
            }

            out.beginArray();
            for (Entry<E> entry : multiset.entrySet()) {
                out.beginObject();
                out.name("id");
                elementAdapter.write(out, entry.getElement());
                out.name("count");
                out.value(entry.getCount());
                out.endObject();
            }
            out.endArray();
        }

        public Multiset<E> read(JsonReader in) throws IOException {
            if (in.peek() == JsonToken.NULL) {
                in.nextNull();
                return null;
            }

            Multiset<E> result = LinkedHashMultiset.create();
            in.beginArray();
            while (in.hasNext()) {
                in.beginObject();
                in.nextName(); // "id"
                E element = elementAdapter.read(in);
                in.nextName(); // "count"
                int count = in.nextInt();
                result.add(element, count);
                in.endObject();
            }
            in.endArray();
            return result;
        }
    };
}

From source file:org.eclipse.smarthome.automation.parser.gson.internal.RuleGSONParser.java

License:Open Source License

@Override
public Set<Rule> parse(InputStreamReader reader) throws ParsingException {
    JsonReader jr = new JsonReader(reader);
    try {// ww w.ja  va 2s.  c o  m
        if (jr.hasNext()) {
            JsonToken token = jr.peek();
            if (JsonToken.BEGIN_ARRAY.equals(token)) {
                Rule[] rules = gson.fromJson(jr, Rule[].class);
                return new HashSet<Rule>(Arrays.asList(rules));
            } else {
                Rule rule = gson.fromJson(jr, Rule.class);
                Set<Rule> rules = new HashSet<Rule>();
                rules.add(rule);
                return rules;
            }
        }
    } catch (Exception e) {
        throw new ParsingException(new ParsingNestedException(ParsingNestedException.RULE, null, e));
    } finally {
        try {
            jr.close();
        } catch (IOException e) {
        }
    }
    return Collections.emptySet();
}

From source file:org.eclipse.smarthome.automation.parser.gson.internal.TemplateGSONParser.java

License:Open Source License

@Override
public Set<Template> parse(InputStreamReader reader) throws ParsingException {
    JsonReader jr = new JsonReader(reader);
    try {//from   w w w  .j a v a 2  s .c o  m
        if (jr.hasNext()) {
            JsonToken token = jr.peek();
            if (JsonToken.BEGIN_ARRAY.equals(token)) {
                Template[] templates = gson.fromJson(jr, RuleTemplate[].class);
                return new HashSet<Template>(Arrays.asList(templates));
            } else {
                Template template = gson.fromJson(jr, RuleTemplate.class);
                Set<Template> templates = new HashSet<Template>();
                templates.add(template);
                return templates;
            }
        }
    } catch (Exception e1) {
        throw new ParsingException(new ParsingNestedException(ParsingNestedException.TEMPLATE, null, e1));
    } finally {
        try {
            jr.close();
        } catch (IOException e) {
        }
    }
    return Collections.emptySet();
}

From source file:org.eclipse.smarthome.storage.json.PropertiesTypeAdapter.java

License:Open Source License

@Override
public Map<String, Object> read(JsonReader in) throws IOException {
    // gson implementation code is modified when deserializing numbers
    JsonToken peek = in.peek();// w w w  . j  a va  2s . co m
    if (peek == JsonToken.NULL) {
        in.nextNull();
        return null;
    }

    Map<String, Object> map = constructor.get(TOKEN).construct();

    if (peek == JsonToken.BEGIN_ARRAY) {
        in.beginArray();
        while (in.hasNext()) {
            in.beginArray(); // entry array
            String key = keyAdapter.read(in);

            // modification
            Object value = getValue(in);

            Object replaced = map.put(key, value);
            if (replaced != null) {
                throw new JsonSyntaxException("duplicate key: " + key);
            }
            in.endArray();
        }
        in.endArray();
    } else {
        in.beginObject();
        while (in.hasNext()) {
            JsonReaderInternalAccess.INSTANCE.promoteNameToValue(in);
            String key = keyAdapter.read(in);

            // modification
            Object value = getValue(in);

            Object replaced = map.put(key, value);
            if (replaced != null) {
                throw new JsonSyntaxException("duplicate key: " + key);
            }
        }
        in.endObject();
    }
    return map;
}

From source file:org.eclipse.thym.core.plugin.registry.CordovaPluginRegistryManager.java

License:Open Source License

public List<CordovaRegistryPluginInfo> retrievePluginInfos(IProgressMonitor monitor) throws CoreException {

    if (monitor == null)
        monitor = new NullProgressMonitor();

    monitor.beginTask("Retrieve plug-in registry catalog", 10);
    DefaultHttpClient theHttpClient = new DefaultHttpClient();
    HttpUtil.setupProxy(theHttpClient);//w  ww .jav  a2  s .c  om
    HttpClient client = new CachingHttpClient(theHttpClient, new HeapResourceFactory(),
            new BundleHttpCacheStorage(HybridCore.getContext().getBundle()), getCacheConfig());
    JsonReader reader = null;
    try {
        if (monitor.isCanceled()) {
            return null;
        }
        String url = REGISTRY_URL
                + "-/_view/byKeyword?startkey=%5B%22ecosystem:cordova%22%5D&endkey=%5B%22ecosystem:cordova1%22%5D&group_level=3";
        HttpGet get = new HttpGet(URI.create(url));
        HttpResponse response = client.execute(get);
        HttpEntity entity = response.getEntity();
        InputStream stream = entity.getContent();
        monitor.worked(7);
        reader = new JsonReader(new InputStreamReader(stream));
        reader.beginObject();//start the Registry
        final ArrayList<CordovaRegistryPluginInfo> plugins = new ArrayList<CordovaRegistryPluginInfo>();
        while (reader.hasNext()) {
            JsonToken token = reader.peek();
            switch (token) {
            case BEGIN_ARRAY:
                reader.beginArray();
                break;
            case BEGIN_OBJECT:
                plugins.add(parseCordovaRegistryPluginInfo(reader));
                break;
            default:
                reader.skipValue();
                break;
            }

        }
        return plugins;

    } catch (ClientProtocolException e) {
        throw new CoreException(
                new Status(IStatus.ERROR, HybridCore.PLUGIN_ID, "Can not retrieve plugin catalog", e));
    } catch (IOException e) {
        throw new CoreException(
                new Status(IStatus.ERROR, HybridCore.PLUGIN_ID, "Can not retrieve plugin catalog", e));
    } finally {
        if (reader != null)
            try {
                reader.close();
            } catch (IOException e) {
                /*ignored*/ }
        monitor.done();
    }
}