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

Introduction

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

Prototype

public void writeTree(JsonGenerator jgen, JsonNode rootNode) throws IOException, JsonProcessingException 

Source Link

Document

Method to serialize given JSON Tree, using generator provided.

Usage

From source file:squash.tools.FakeBookingCreator.java

public static void main(String[] args) throws IOException {
    int numberOfDays = 21;
    int numberOfCourts = 5;
    int maxCourtSpan = 5;
    int numberOfSlots = 16;
    int maxSlotSpan = 3;
    int minSurnameLength = 2;
    int maxSurnameLength = 20;
    int minBookingsPerDay = 0;
    int maxBookingsPerDay = 8;
    LocalDate startDate = LocalDate.of(2016, 7, 5);

    DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd");
    List<Booking> bookings = new ArrayList<>();
    for (LocalDate date = startDate; date.isBefore(startDate.plusDays(numberOfDays)); date = date.plusDays(1)) {
        int numBookings = ThreadLocalRandom.current().nextInt(minBookingsPerDay, maxBookingsPerDay + 1);
        List<Booking> daysBookings = new ArrayList<>();
        for (int bookingIndex = 0; bookingIndex < numBookings; bookingIndex++) {
            String player1 = RandomStringUtils.randomAlphabetic(1) + "." + RandomStringUtils.randomAlphabetic(
                    ThreadLocalRandom.current().nextInt(minSurnameLength, maxSurnameLength + 1));
            String player2 = RandomStringUtils.randomAlphabetic(1) + "." + RandomStringUtils.randomAlphabetic(
                    ThreadLocalRandom.current().nextInt(minSurnameLength, maxSurnameLength + 1));

            Set<ImmutablePair<Integer, Integer>> bookedCourts = new HashSet<>();
            daysBookings.forEach((booking) -> {
                addBookingToSet(booking, bookedCourts);
            });/*  w w  w .j a va2 s  .  c o m*/

            Booking booking;
            Set<ImmutablePair<Integer, Integer>> courtsToBook = new HashSet<>();
            do {
                // Loop until we create a booking of free courts
                int court = ThreadLocalRandom.current().nextInt(1, numberOfCourts + 1);
                int courtSpan = ThreadLocalRandom.current().nextInt(1,
                        Math.min(maxCourtSpan + 1, numberOfCourts - court + 2));
                int slot = ThreadLocalRandom.current().nextInt(1, numberOfSlots + 1);
                int slotSpan = ThreadLocalRandom.current().nextInt(1,
                        Math.min(maxSlotSpan + 1, numberOfSlots - slot + 2));
                booking = new Booking(court, courtSpan, slot, slotSpan, player1 + "/" + player2);
                booking.setDate(date.format(formatter));
                courtsToBook.clear();
                addBookingToSet(booking, courtsToBook);
            } while (Boolean.valueOf(Sets.intersection(courtsToBook, bookedCourts).size() > 0));

            daysBookings.add(booking);
        }
        bookings.addAll(daysBookings);
    }

    // Encode bookings as JSON
    // Create the node factory that gives us nodes.
    JsonNodeFactory factory = new JsonNodeFactory(false);
    // Create a json factory to write the treenode as json.
    JsonFactory jsonFactory = new JsonFactory();
    ObjectNode rootNode = factory.objectNode();

    ArrayNode bookingsNode = rootNode.putArray("bookings");
    for (int i = 0; i < bookings.size(); i++) {
        Booking booking = bookings.get(i);
        ObjectNode bookingNode = factory.objectNode();
        bookingNode.put("court", booking.getCourt());
        bookingNode.put("courtSpan", booking.getCourtSpan());
        bookingNode.put("slot", booking.getSlot());
        bookingNode.put("slotSpan", booking.getSlotSpan());
        bookingNode.put("name", booking.getName());
        bookingNode.put("date", booking.getDate());
        bookingsNode.add(bookingNode);
    }
    // Add empty booking rules array - just so restore works
    rootNode.putArray("bookingRules");
    rootNode.put("clearBeforeRestore", true);

    try (JsonGenerator generator = jsonFactory.createGenerator(new File("FakeBookings.json"),
            JsonEncoding.UTF8)) {
        ObjectMapper mapper = new ObjectMapper();
        mapper.setSerializationInclusion(Include.NON_EMPTY);
        mapper.setSerializationInclusion(Include.NON_NULL);
        mapper.writeTree(generator, rootNode);
    }
}

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From source file:org.apache.infra.reviewboard.ReviewBoard.java

public static void main(String... args) throws IOException {

    URL url = new URL(REVIEW_BOARD_URL);
    HttpHost host = new HttpHost(url.getHost(), url.getPort(), url.getProtocol());

    Executor executor = Executor.newInstance().auth(host, REVIEW_BOARD_USERNAME, REVIEW_BOARD_PASSWORD)
            .authPreemptive(host);// w  ww.j  a va  2  s . c  o m

    Request request = Request.Get(REVIEW_BOARD_URL + "/api/review-requests/");
    Response response = executor.execute(request);

    request = Request.Get(REVIEW_BOARD_URL + "/api/review-requests/");
    response = executor.execute(request);

    ObjectMapper mapper = new ObjectMapper();
    JsonNode json = mapper.readTree(response.returnResponse().getEntity().getContent());

    JsonFactory factory = new JsonFactory();
    JsonGenerator generator = factory.createGenerator(new PrintWriter(System.out));
    generator.setPrettyPrinter(new DefaultPrettyPrinter());
    mapper.writeTree(generator, json);
}

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From source file:uk.ac.ucl.excites.sapelli.collector.SapColCmdLn.java

/**
 * @param sapFile/* w ww.  j  ava 2s . c  o  m*/
 * @param project
 * @throws IOException
 * @see https://github.com/ExCiteS/geokey-sapelli
 */
static public void printProjectInfoForGeoKey(File sapFile, Project project) throws IOException {
    GeoKeyFormDescriber gkFormDescriber = new GeoKeyFormDescriber();

    // Create the node factory that gives us nodes.
    JsonNodeFactory factory = new JsonNodeFactory(false);

    // create a json factory to write the treenode as json. for the example
    // we just write to console
    JsonFactory jsonFactory = new JsonFactory();
    JsonGenerator generator = jsonFactory.createGenerator(System.out);
    ObjectMapper mapper = new ObjectMapper();

    // the root node
    ObjectNode projectJSON = factory.objectNode();

    // describe project:
    projectJSON.put("name", project.getName());
    projectJSON.put("variant", project.getVariant());
    projectJSON.put("version", project.getVersion());
    projectJSON.put("display_name", project.toString(false));
    projectJSON.put("sapelli_id", project.getID());
    projectJSON.put("sapelli_fingerprint", project.getFingerPrint());
    projectJSON.put("sapelli_model_id", project.getModel().id);
    projectJSON.put("installation_path", fsp.getProjectInstallationFolder(project, false).getAbsolutePath());
    ArrayNode formsJSON = factory.arrayNode();
    for (Form frm : project.getForms()) {
        ObjectNode formNode = gkFormDescriber.getFormJSON(frm);
        if (formNode != null)
            formsJSON.add(formNode);
    }
    projectJSON.set("forms", formsJSON);

    // Serialise:
    mapper.writeTree(generator, projectJSON);
}

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From source file:edu.usd.btl.REST.CategoriesResource.java

@Path("/test")
@GET/*from  w w w  .j a  va2 s.c o m*/
@Produces("application/json")
public String getTestJson() throws Exception {
    // Create the node factory that gives us nodes.
    JsonNodeFactory factory = new JsonNodeFactory(false);

    // create a json factory to write the treenode as json. for the example
    // we just write to console
    JsonFactory jsonFactory = new JsonFactory();
    JsonGenerator generator = jsonFactory.createGenerator(System.out);
    ObjectMapper mapper = new ObjectMapper();

    // the root node - album
    JsonNode album = factory.objectNode();
    mapper.writeTree(generator, album);

    return "null";
}

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From source file:org.camunda.spin.impl.json.jackson.format.JacksonJsonDataFormatWriter.java

public void writeToWriter(Writer writer, Object input) {
    final ObjectMapper objectMapper = dataFormat.getObjectMapper();
    final JsonFactory factory = objectMapper.getFactory();

    try {//from  w w  w.ja va 2 s.  c  o  m
        JsonGenerator generator = factory.createGenerator(writer);
        objectMapper.writeTree(generator, (JsonNode) input);
    } catch (IOException e) {
        throw LOG.unableToWriteJsonNode(e);
    }

}

---

From source file:uk.ac.ucl.excites.sapelli.collector.SapColCmdLn.java

static public void printProjectInfoJSON(File sapFile, Project project) throws IOException {
    // Create the node factory that gives us nodes.
    JsonNodeFactory factory = new JsonNodeFactory(false);

    // create a json factory to write the treenode as json. for the example
    // we just write to console
    JsonFactory jsonFactory = new JsonFactory();
    JsonGenerator generator = jsonFactory.createGenerator(System.out);
    ObjectMapper mapper = new ObjectMapper();

    // the root node
    ObjectNode projectJSON = factory.objectNode();

    // describe project:
    projectJSON.put("source", sapFile.getAbsolutePath());
    projectJSON.put("id", project.getID());
    projectJSON.put("fingerprint", project.getFingerPrint());
    projectJSON.put("name", project.getName());
    projectJSON.put("variant", project.getVariant());
    projectJSON.put("version", project.getVersion());
    projectJSON.put("display-name", project.toString(false));
    projectJSON.put("model-id", project.getModel().id);
    projectJSON.put("install-path", fsp.getProjectInstallationFolder(project, false).getAbsolutePath());
    ArrayNode formsJSON = factory.arrayNode();
    for (Form frm : project.getForms()) {
        ObjectNode formJSON = factory.objectNode();
        formJSON.put("id", frm.id);
        formJSON.put("produces-data", frm.isProducesRecords());
        formJSON.put("model-schema-number",
                (frm.isProducesRecords() ? frm.getSchema().getModelSchemaNumber() : null));
        formsJSON.add(formJSON);/*ww  w .j  a  v a2  s .  co m*/
    }
    projectJSON.set("forms", formsJSON);

    // Serialise:
    mapper.writeTree(generator, projectJSON);
}

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From source file:org.forgerock.openig.migrate.Main.java

void execute(OutputStream stream) throws Exception {

    // Pre-parse the original files with JSON-Simple parser (which is more lenient than Jackson's one)
    File source = new File(sources.get(0));
    JSONParser parser = new JSONParser();
    JSONObject object = (JSONObject) parser.parse(new FileReader(source));

    // Then serialize again the structure (should clean up the JSON)
    StringWriter writer = new StringWriter();
    object.writeJSONString(writer);/*ww w.j a  v a  2  s  .c  o m*/

    // Load migration actions to apply in order
    List<Action> actions = loadActions();

    // Parse the cleaned-up content with Jackson this time
    JsonFactory factory = new JsonFactory();
    ObjectMapper mapper = new ObjectMapper();
    ObjectNode node = (ObjectNode) mapper.readTree(writer.toString());

    // Apply migration actions
    for (Action action : actions) {
        node = action.migrate(node);
    }

    // Serialize the migrated content on the given stream (with pretty printer)
    DefaultPrettyPrinter prettyPrinter = new DefaultPrettyPrinter();
    prettyPrinter.indentArraysWith(DefaultPrettyPrinter.Lf2SpacesIndenter.instance);
    mapper.writeTree(factory.createGenerator(stream).setPrettyPrinter(prettyPrinter), node);
}

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From source file:net.floodlightcontroller.configuration.ConfigurationManager.java

/**
 * Writes a configuration file based on information gathered from
 * the various configuration listeners./*from w  w w .j a  va2s.  co m*/
 * 
 * @param file An optional configuration file name.
 */
private void writeJsonToFile(String fileName) throws IOException {
    String configFile = (fileName != null) ? fileName : this.fileName;
    ObjectMapper mapper = new ObjectMapper();
    ObjectNode rootNode = createJsonRootNode();
    JsonFactory f = new JsonFactory();
    JsonGenerator g = null;

    try {
        g = f.createJsonGenerator(new File(configFile), JsonEncoding.UTF8);
        g.useDefaultPrettyPrinter();
        mapper.writeTree(g, rootNode);
    } catch (IOException e) {
        if (logger.isErrorEnabled()) {
            logger.error("Could not write the JSON configuration file.");
        }
        throw new IOException("Could not write the JSON configuration file");
    }
}

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From source file:net.floodlightcontroller.configuration.ConfigurationManager.java

@Override
public String showConfiguration(String fileName) {
    ObjectMapper mapper = new ObjectMapper();
    ObjectNode rootNode = createJsonRootNode();
    JsonFactory f = new JsonFactory();
    OutputStream out = new ByteArrayOutputStream();
    JsonGenerator g = null;// ww w  . ja  v  a 2s  .c  om
    try {
        g = f.createGenerator(out, JsonEncoding.UTF8);
        g.useDefaultPrettyPrinter();
        mapper.writeTree(g, rootNode);
    } catch (IOException e) {
        return "Error: Could not parse the JSON configuration file.";
    }
    return out.toString();
}

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From source file:com.ikanow.aleph2.data_model.utils.TestCrudUtils.java

/** Create a DB object from a JsonNode
 * @param bean_template/*  w  ww . jav  a 2s  .com*/
 * @return
 * @throws IOException 
 * @throws JsonMappingException 
 * @throws JsonGenerationException 
 */
public static DBObject convertJsonBean(JsonNode json, ObjectMapper object_mapper) {
    try {
        final BsonObjectGenerator generator = new BsonObjectGenerator();
        object_mapper.writeTree(generator, json);
        return generator.getDBObject();
    } catch (Exception e) {
        throw new RuntimeException(e);
    }
}

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