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

Introduction

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

Prototype

public JsonReader(Reader in) 

Source Link

Document

Creates a new instance that reads a JSON-encoded stream from in .

Usage

From source file:abtlibrary.utils.as24ApiClient.JSON.java

License:Apache License

/**
 * Deserialize the given JSON string to Java object.
 *
 * @param <T> Type/*  w w  w.ja v  a  2  s .c o  m*/
 * @param body The JSON string
 * @param returnType The type to deserialize inot
 * @return The deserialized Java object
 */
@SuppressWarnings("unchecked")
public <T> T deserialize(String body, Type returnType) {
    try {
        if (apiClient.isLenientOnJson()) {
            JsonReader jsonReader = new JsonReader(new StringReader(body));
            // see https://google-gson.googlecode.com/svn/trunk/gson/docs/javadocs/com/google/gson/stream/JsonReader.html#setLenient(boolean)
            jsonReader.setLenient(true);
            return gson.fromJson(jsonReader, returnType);
        } else {
            return gson.fromJson(body, returnType);
        }
    } catch (JsonParseException e) {
        // Fallback processing when failed to parse JSON form response body:
        //   return the response body string directly for the String return type;
        //   parse response body into date or datetime for the Date return type.
        if (returnType.equals(String.class))
            return (T) body;
        else if (returnType.equals(Date.class))
            return (T) apiClient.parseDateOrDatetime(body);
        else
            throw (e);
    }
}

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From source file:at.univie.sensorium.preferences.Preferences.java

License:Open Source License

private void loadPrefsFromStream(InputStream input) {
    List<BasicNameValuePair> preferencelist = new LinkedList<BasicNameValuePair>();
    try {/*from   ww w.j av a  2 s .c  o  m*/
        InputStreamReader isreader = new InputStreamReader(input);
        JsonReader reader = new JsonReader(isreader);
        //         String jsonVersion = "";

        reader.beginArray(); // do we have an array or just a single object?
        reader.beginObject();
        while (reader.hasNext()) {
            String name = reader.nextName();
            String value = reader.nextString();
            if (name.equalsIgnoreCase(PREFERENCES_VERSION))
                currentPrefVersion = Integer.valueOf(value);
            BasicNameValuePair kv = new BasicNameValuePair(name, value);
            preferencelist.add(kv);
        }
        reader.endObject();
        reader.endArray();
        reader.close();

        if (newerPrefsAvailable()) {
            Log.d(SensorRegistry.TAG, "Newer preferences available in json, overwriting existing.");
            for (BasicNameValuePair kv : preferencelist) {
                putPreference(kv.getName(), kv.getValue());
            }
            // also reset the welcome screen
            putBoolean(WELCOME_SCREEN_SHOWN, false);
        } else {
            Log.d(SensorRegistry.TAG, "Preferences are recent, not overwriting.");
        }

    } catch (FileNotFoundException e) {
        StringWriter sw = new StringWriter();
        PrintWriter pw = new PrintWriter(sw);
        e.printStackTrace(pw);
        Log.d(SensorRegistry.TAG, sw.toString());
    } catch (IOException e) {
        StringWriter sw = new StringWriter();
        PrintWriter pw = new PrintWriter(sw);
        e.printStackTrace(pw);
        Log.d(SensorRegistry.TAG, sw.toString());
    }
}

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From source file:au.com.addstar.cellblock.utilities.Utilities.java

License:Open Source License

public static <T extends Serializable> T loadFile(File file, TypeToken<T> type) {
    if (!file.exists()) {
        return null;
    }/*from  ww w.  ja va 2  s . c o  m*/
    try {
        InputStream in = new FileInputStream(file);
        InputStreamReader inread = new InputStreamReader(in);
        JsonReader reader = new JsonReader(inread);
        return gsonEncoder.fromJson(reader, type.getType());
    } catch (FileNotFoundException e) {
        e.printStackTrace();
    }
    return null;
}

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From source file:au.edu.unsw.cse.soc.federatedcloud.deployers.github.repository.GitHubClient.java

License:Open Source License

/**
 * Parse JSON to specified type/*from ww w  .j a  v a 2s. c  o m*/
 *
 * @param <V>
 * @param stream
 * @param type
 * @param listType
 * @return parsed type
 * @throws IOException
 */
protected <V> V parseJson(InputStream stream, Type type, Type listType) throws IOException {
    BufferedReader reader = new BufferedReader(new InputStreamReader(stream, CHARSET_UTF8), bufferSize);
    if (listType == null)
        try {
            return gson.fromJson(reader, type);
        } catch (JsonParseException jpe) {
            IOException ioe = new IOException("Parse exception converting JSON to object"); //$NON-NLS-1$
            ioe.initCause(jpe);
            throw ioe;
        } finally {
            try {
                reader.close();
            } catch (IOException ignored) {
                // Ignored
            }
        }
    else {
        JsonReader jsonReader = new JsonReader(reader);
        try {
            if (jsonReader.peek() == BEGIN_ARRAY)
                return gson.fromJson(jsonReader, listType);
            else
                return gson.fromJson(jsonReader, type);
        } catch (JsonParseException jpe) {
            IOException ioe = new IOException("Parse exception converting JSON to object"); //$NON-NLS-1$
            ioe.initCause(jpe);
            throw ioe;
        } finally {
            try {
                jsonReader.close();
            } catch (IOException ignored) {
                // Ignored
            }
        }
    }
}

---

From source file:au.edu.unsw.cse.soc.federatedcloud.deployers.github.repository.GitHubRepoDeploymentWrapper.java

License:Open Source License

protected <V> V parseJson(InputStream stream, Type type, Type listType) throws IOException {
    BufferedReader reader = new BufferedReader(new InputStreamReader(stream, CHARSET_UTF8), bufferSize);
    if (listType == null)
        try {//from ww  w  .ja  va2s  . c  om
            return gson.fromJson(reader, type);
        } catch (JsonParseException jpe) {
            IOException ioe = new IOException("Parse exception converting JSON to object"); //$NON-NLS-1$
            ioe.initCause(jpe);
            throw ioe;
        } finally {
            try {
                reader.close();
            } catch (IOException ignored) {
                // Ignored
            }
        }
    else {
        JsonReader jsonReader = new JsonReader(reader);
        try {
            if (jsonReader.peek() == BEGIN_ARRAY)
                return gson.fromJson(jsonReader, listType);
            else
                return gson.fromJson(jsonReader, type);
        } catch (JsonParseException jpe) {
            IOException ioe = new IOException("Parse exception converting JSON to object"); //$NON-NLS-1$
            ioe.initCause(jpe);
            throw ioe;
        } finally {
            try {
                jsonReader.close();
            } catch (IOException ignored) {
                // Ignored
            }
        }
    }
}

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From source file:Batch.TweetReader.java

@Override
public void open(Serializable checkpoint) throws Exception {
    BufferedReader in = new BufferedReader(
            new InputStreamReader(this.getClass().getClassLoader().getResourceAsStream("kwetterinput.json")));

    reader = new JsonReader(in);
    reader.beginObject();// ww w  .  ja v a  2  s . co m
    reader.nextName();
    reader.beginArray();
    gson = new Gson();
}

---

From source file:be.iminds.iot.dianne.dataset.DatasetConfigurator.java

License:Open Source License

private void parseDatasetConfiguration(File f) {
    try {//from w w w  .  java 2s. c  o m
        // parse any adapter configurations from JSON and apply config?
        JsonParser parser = new JsonParser();
        JsonObject json = parser.parse(new JsonReader(new FileReader(f))).getAsJsonObject();

        String name = json.get("name").getAsString();
        if (name == null)
            return; // should have a name

        Hashtable<String, Object> props = new Hashtable<>();

        String dir = f.getParentFile().getAbsolutePath();
        props.put("dir", dir);

        String pid = null;

        if (json.has("adapter")) {
            String adapter = json.get("adapter").getAsString();
            pid = adapter.contains(".") ? adapter : "be.iminds.iot.dianne.dataset.adapters." + adapter;
            // in case of adapter, set Dataset target: the dataset it is adapting
            String dataset = json.get("dataset").getAsString();
            props.put("Dataset.target", "(name=" + dataset + ")");
        } else if (json.has("type")) {
            String type = json.get("type").getAsString();
            pid = "be.iminds.iot.dianne.dataset." + type;
        } else {
            // some hard coded pids
            if (name.startsWith("MNIST")) {
                pid = "be.iminds.iot.dianne.dataset.MNIST";
            } else if (name.startsWith("CIFAR-100")) {
                pid = "be.iminds.iot.dianne.dataset.CIFAR100";
            } else if (name.startsWith("CIFAR-10")) {
                pid = "be.iminds.iot.dianne.dataset.CIFAR10";
            } else if (name.startsWith("STL-10")) {
                pid = "be.iminds.iot.dianne.dataset.STL10";
            } else if (name.startsWith("SVHN")) {
                pid = "be.iminds.iot.dianne.dataset.SVHN";
            } else if (name.equalsIgnoreCase("ImageNetValidation")) {
                pid = "be.iminds.iot.dianne.dataset.ImageNet.validation";
            } else if (name.equalsIgnoreCase("ImageNetTraining")) {
                pid = "be.iminds.iot.dianne.dataset.ImageNet.training";
            } else {
                pid = "be.iminds.iot.dianne.dataset." + name;
            }
        }

        // set an aiolos instance id using the dataset name to treat
        // equally named datasets as single instance in the network
        props.put("aiolos.instance.id", name);
        // combine all offered interfaces (might be SequenceDataset or ExperiencePool)
        props.put("aiolos.combine", "*");

        // TODO use object conversion from JSON here?
        Configuration config = ca.createFactoryConfiguration(pid, null);
        json.entrySet().stream().forEach(e -> {
            if (e.getValue().isJsonArray()) {
                JsonArray a = e.getValue().getAsJsonArray();
                String[] val = new String[a.size()];
                for (int i = 0; i < val.length; i++) {
                    val[i] = a.get(i).getAsString();
                }
                props.put(e.getKey(), val);
            } else {
                props.put(e.getKey(), e.getValue().getAsString());
            }
        });
        config.update(props);
    } catch (Exception e) {
        System.err.println("Error parsing Dataset config file: " + f.getAbsolutePath());
        e.printStackTrace();
    }
}

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From source file:be.iminds.iot.dianne.jsonrpc.DianneJSONRPCCLI.java

License:Open Source License

public void jsonrpc(String requestString) {
    JsonWriter writer = new JsonWriter(new PrintWriter(System.out));
    try {//from w  w w .j a v a  2s.  com
        if (requestString.contains("://")) {
            // treat as URI
            URI uri = new URI(requestString);
            JsonReader reader = new JsonReader(new InputStreamReader(uri.toURL().openStream()));
            handler.handleRequest(reader, writer);
        } else {
            // treat as json request string
            JsonObject request = parser.parse(requestString).getAsJsonObject();
            handler.handleRequest(request, writer);
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
}

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From source file:be.iminds.iot.dianne.jsonrpc.DianneJSONRPCServlet.java

License:Open Source License

@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
    resp.setContentType("application/json");

    try (JsonReader reader = new JsonReader(req.getReader());
            JsonWriter writer = new JsonWriter(resp.getWriter())) {

        handler.handleRequest(reader, writer);
    } catch (Exception e) {
        e.printStackTrace();/*w ww .j a  v a 2 s . c  o  m*/
    }
}

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From source file:be.iminds.iot.dianne.nn.util.DianneJSONConverter.java

License:Open Source License

public static NeuralNetworkDTO parseJSON(InputStream i) {
    JsonReader reader = new JsonReader(new InputStreamReader(i));
    JsonObject json = parser.parse(reader).getAsJsonObject();
    return parseJSON(json);
}

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