Example usage for com.fasterxml.jackson.databind ObjectMapper readValue

Introduction

In this page you can find the example usage for com.fasterxml.jackson.databind ObjectMapper readValue.

Prototype

@SuppressWarnings("unchecked")
    public <T> T readValue(byte[] src, JavaType valueType)
            throws IOException, JsonParseException, JsonMappingException

Source Link

Usage

From source file:io.github.retz.mesosc.MesosHTTPFetcher.java

public static Optional<String> extractSlaveBasePath(InputStream stream) throws IOException {
    ObjectMapper mapper = new ObjectMapper();
    Map<String, Map<String, Object>> map = mapper.readValue(stream, java.util.Map.class);
    String dir = (String) map.get("flags").get("work_dir");

    return Optional.of(dir);
}

From source file:org.bremersee.sms.ExtensionUtils.java

/**
 * Transforms a JSON map into an object.
 * /*  w w  w.j ava2 s.c o  m*/
 * @param map
 *            the JSON map
 * @param valueType
 *            the class of the target object
 * @param objectMapper
 *            the JSON object mapper (can be null)
 * @return the target object
 * @throws IOException
 *             if transformation fails
 */
public static <T> T jsonMapToObject(Map<String, Object> map, Class<T> valueType, ObjectMapper objectMapper)
        throws IOException {
    if (map == null) {
        return null;
    }
    Validate.notNull(valueType, "valueType must not be null");
    if (objectMapper == null) {
        objectMapper = DEFAULT_OBJECT_MAPPER;
    }
    return objectMapper.readValue(objectMapper.writeValueAsBytes(map), valueType);
}

From source file:org.keycloak.helper.TestsHelper.java

public static boolean ImportTestRealm(String username, String password, String realmJsonPath)
        throws IOException {

    ObjectMapper mapper = new ObjectMapper();
    ClassLoader classLoader = TestsHelper.class.getClassLoader();
    InputStream stream = TestsHelper.class.getResourceAsStream(realmJsonPath);
    RealmRepresentation realmRepresentation = mapper.readValue(stream, RealmRepresentation.class);

    Keycloak keycloak = Keycloak.getInstance(keycloakBaseUrl, "master", username, password, "admin-cli");
    keycloak.realms().create(realmRepresentation);
    testRealm = realmRepresentation.getRealm();
    ClientInitialAccessCreatePresentation rep = new ClientInitialAccessCreatePresentation();
    rep.setCount(2);/*from   w ww.  j av a  2 s  . c o  m*/
    rep.setExpiration(100);
    ClientInitialAccessPresentation initialAccess = keycloak.realms().realm(testRealm).clientInitialAccess()
            .create(rep);
    initialAccessCode = initialAccess.getToken();
    return true;

}

From source file:com.networknt.light.server.LightServer.java

/**
 * This replay is to initialize database when the db is newly created. It load rules, forms and pages
 * and certain setup that need to make the applications working. To replay the entire event schema,
 * you have to call it from the Db Admin interface.
 *
 *///from w  ww .ja v a2  s. com
static private void replayEvent() {

    // need to replay from a file instead if the file exist. Otherwise, load from db and replay.
    // in this case, we need to recreate db.

    StringBuilder sb = new StringBuilder("");

    //Get file from resources folder
    ClassLoader classloader = Thread.currentThread().getContextClassLoader();
    InputStream is = classloader.getResourceAsStream("initdb.json");
    try (Scanner scanner = new Scanner(is)) {
        while (scanner.hasNextLine()) {
            String line = scanner.nextLine();
            sb.append(line).append("\n");
        }
        scanner.close();

        ObjectMapper mapper = ServiceLocator.getInstance().getMapper();
        if (sb.length() > 0) {
            // if you want to generate the initdb.json from your dev env, then you should make this
            // file as empty in server resources folder and load all objects again.
            List<Map<String, Object>> events = mapper.readValue(sb.toString(),
                    new TypeReference<List<HashMap<String, Object>>>() {
                    });

            // replay event one by one.
            for (Map<String, Object> event : events) {
                RuleEngine.getInstance().executeRule(Util.getEventRuleId(event), event);
            }
        }
    } catch (Exception e) {
        logger.error("Exception:", e);
    }
}

From source file:org.numenta.nupic.algorithms.CLAClassifier.java

public static CLAClassifier deSerialize(String jsonStrategy) {
    ObjectMapper om = new ObjectMapper();
    CLAClassifier c = null;/*from  w w  w.j  a  v a 2  s.c om*/
    try {
        Object o = om.readValue(jsonStrategy, CLAClassifier.class);
        c = (CLAClassifier) o;
    } catch (Exception e) {
        e.printStackTrace();
    }

    return c;
}

From source file:com.googlecode.blaisemath.app.MenuConfig.java

/** 
 * Reads menu components from file./*from  www.  ja v a  2  s.c om*/
 * @param cls class with associated resource
 * @return map, where values are either nested maps, or lists of strings representing actions
 * @throws IOException if there's an error reading from the config file
 */
public static Map<String, Object> readConfig(Class cls) throws IOException {
    String path = "resources/" + cls.getSimpleName() + MENU_SUFFIX + ".yml";
    URL rsc = cls.getResource(path);
    checkNotNull(rsc, "Failed to locate " + path);
    ObjectMapper mapper = new ObjectMapper(new YAMLFactory());
    return mapper.readValue(rsc, Map.class);
}

From source file:com.github.braully.graph.DatabaseFacade.java

public static UndirectedSparseGraphTO openGraph(String nameFile) throws IOException {
    if (nameFile == null) {
        return null;
    }/*from   ww  w  .ja  v a  2 s . c o  m*/
    UndirectedSparseGraphTO graph = null;
    ObjectMapper mapper = new ObjectMapper();
    graph = mapper.readValue(new File(DATABASE_DIRECTORY_GRAPH + File.separator + nameFile),
            UndirectedSparseGraphTO.class);
    return graph;
}

From source file:io.github.retz.mesosc.MesosHTTPFetcher.java

public static Optional<String> extractSlaveAddr(InputStream stream, String slaveId) throws IOException {
    ObjectMapper mapper = new ObjectMapper();
    Map<String, List<Map<String, Object>>> map = mapper.readValue(stream, java.util.Map.class);
    String pid;/*from www. java  2s. co  m*/
    for (Map<String, Object> slave : map.get("slaves")) {
        if (slave.get("id").equals(slaveId)) {
            pid = (String) slave.get("pid");
            String[] tokens = pid.split("@");
            assert tokens.length == 2;
            return Optional.of(tokens[1]);
        }
    }
    return Optional.empty();
}

From source file:za.co.bronkode.jwtbroker.Tokenizer.java

public static Token DecodeToken(String token) {
    if (IsValidToken(token)) {
        try {/*  ww  w . j  a v a 2s  .c o  m*/
            String[] items = token.split("\\.");

            Token t = new Token();

            ObjectMapper mapper = new ObjectMapper();
            byte[] headerBytes = Base64.getDecoder().decode(items[0]);
            byte[] claimBytes = Base64.getDecoder().decode(items[1]);
            String headerjson = new String(headerBytes);
            String claimjson = new String(claimBytes);
            t.setHeader(mapper.readValue(headerjson, TokenHeader.class));
            t.setClaim(mapper.readValue(claimjson, claimClass));

            return t;
        } catch (IOException ex) {
            Logger.getLogger(Tokenizer.class.getName()).log(Level.SEVERE, null, ex);

        }
    } else {
        return null;
    }
    return null;
}

From source file:org.kitesdk.apps.streaming.StreamDescription.java

public static StreamDescription parseJson(String json) {

    ObjectMapper mapper = new ObjectMapper();

    JsonNode parent;/*from  www .j  a  v a  2  s .co  m*/

    try {
        parent = mapper.readValue(json, JsonNode.class);
    } catch (JsonParseException e) {
        throw new ValidationException("Invalid JSON", e);
    } catch (JsonMappingException e) {
        throw new ValidationException("Invalid JSON", e);
    } catch (IOException e) {
        throw new AppException(e);
    }

    StreamDescription.Builder builder = new StreamDescription.Builder();

    String jobName = parent.get(NAME).asText();

    builder.jobName(jobName);

    String className = parent.get(JOBCLASS).asText();

    try {
        Class jobClass = Thread.currentThread().getContextClassLoader().loadClass(className);

        builder.jobClass(jobClass);

    } catch (ClassNotFoundException e) {
        throw new AppException(e);
    }

    // Read the streams.
    ArrayNode streams = (ArrayNode) parent.get(STREAMS);

    for (JsonNode stream : streams) {

        String name = stream.get(NAME).asText();

        ObjectNode props = (ObjectNode) stream.get(PROPS);

        Map<String, String> properties = Maps.newHashMap();

        for (Iterator<Map.Entry<String, JsonNode>> it = props.fields(); it.hasNext();) {

            Map.Entry<String, JsonNode> property = it.next();

            properties.put(property.getKey(), property.getValue().asText());
        }

        builder.withStream(name, properties);
    }

    // Read the views.
    ArrayNode views = (ArrayNode) parent.get(VIEWS);

    for (JsonNode view : views) {

        String name = view.get(NAME).asText();
        String uri = view.get(URI_PROP).asText();

        builder.withView(name, uri);
    }

    return builder.build();
}