Example usage for com.fasterxml.jackson.core JsonGenerator writeStartObject

List of usage examples for com.fasterxml.jackson.core JsonGenerator writeStartObject

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Introduction

In this page you can find the example usage for com.fasterxml.jackson.core JsonGenerator writeStartObject.

Prototype

public abstract void writeStartObject() throws IOException, JsonGenerationException;

Source Link

Document

Method for writing starting marker of a JSON Object value (character '{'; plus possible white space decoration if pretty-printing is enabled).

Usage

From source file:com.meetingninja.csse.database.GroupDatabaseAdapter.java

public static Group updateGroup(Group group) throws IOException {
    ByteArrayOutputStream json = new ByteArrayOutputStream();
    // this type of print stream allows us to get a string easily
    PrintStream ps = new PrintStream(json);
    JsonGenerator jgen = JFACTORY.createGenerator(ps, JsonEncoding.UTF8);
    // Build JSON Object for Title
    jgen.writeStartObject();
    jgen.writeStringField(Keys.Group.ID, group.getGroupID());
    jgen.writeStringField("field", Keys.Group.TITLE);
    jgen.writeStringField("value", group.getGroupTitle());
    jgen.writeEndObject();//from  www  .  j a v a  2  s .c o  m
    jgen.close();
    String payloadTitle = json.toString("UTF8");
    ps.close();

    json = new ByteArrayOutputStream();
    // this type of print stream allows us to get a string easily
    ps = new PrintStream(json);
    jgen = JFACTORY.createGenerator(ps, JsonEncoding.UTF8);
    // Build JSON Object for Group members
    jgen.writeStartObject();
    jgen.writeStringField(Keys.Group.ID, group.getGroupID());
    jgen.writeStringField("field", Keys.Group.MEMBERS);
    jgen.writeArrayFieldStart("value");
    for (User member : group.getMembers()) {
        jgen.writeStartObject();
        jgen.writeStringField(Keys.User.ID, member.getID());
        jgen.writeEndObject();

    }
    jgen.writeEndArray();
    jgen.writeEndObject();
    jgen.close();
    String payloadMembers = json.toString("UTF8");
    ps.close();
    // Establish connection
    sendSingleEdit(payloadTitle);
    String response = sendSingleEdit(payloadMembers);
    JsonNode groupNode = MAPPER.readTree(response);

    return parseGroup(groupNode, new Group());
}

From source file:jvmoptions.OptionAnalyzer.java

static Path toJson(String java6, String java7, String java8) throws Exception {
    Map<String, Map<String, String>> map6 = makeMap(java6);
    Map<String, Map<String, String>> map7 = makeMap(java7);
    Map<String, Map<String, String>> map8 = makeMap(java8);

    Path output = Paths.get("result", filename("json"));

    JsonFactory factory = new JsonFactory();
    JsonGenerator jg = factory.createGenerator(output.toFile(), JsonEncoding.UTF8).useDefaultPrettyPrinter();

    jg.writeStartObject();
    Stream.of(map6, map7, map8).map(Map::keySet).flatMap(Collection::stream).sorted().distinct().forEach(k -> {
        try {//www  . j  ava2  s .  com
            jg.writeFieldName(k);
            jg.writeStartObject();

            Map<String, String> base = pick(k, map8, map7, map6);
            jg.writeStringField("kind", base.get("kind"));
            jg.writeStringField("type", base.get("type"));
            jg.writeStringField("description", base.get("description"));
            jg.writeStringField("file", base.get("file"));

            write(jg, "java6", map6.get(k));
            write(jg, "java7", map7.get(k));
            write(jg, "java8", map8.get(k));

            jg.writeEndObject();
        } catch (IOException e) {
            throw new UncheckedIOException(e);
        }
    });
    jg.writeEndObject();

    jg.close();

    return output;
}

From source file:com.meetingninja.csse.database.MeetingDatabaseAdapter.java

private static String getEditPayload(String meetingID, String field, String value) throws IOException {
    ByteArrayOutputStream json = new ByteArrayOutputStream();
    // this type of print stream allows us to get a string easily
    PrintStream ps = new PrintStream(json);
    // Create a generator to build the JSON string
    JsonGenerator jgen = JFACTORY.createGenerator(ps, JsonEncoding.UTF8);
    // Build JSON Object for Title
    jgen.writeStartObject();
    jgen.writeStringField(Keys.Meeting.ID, meetingID);
    jgen.writeStringField("field", field);
    jgen.writeStringField("value", value);
    jgen.writeEndObject();/*from  w w  w .  jav a  2 s.  c om*/
    jgen.close();
    String payload = json.toString("UTF8");
    ps.close();
    return payload;
}

From source file:com.meetingninja.csse.database.GroupDatabaseAdapter.java

public static Group createGroup(Group g) throws IOException, MalformedURLException {
    // Server URL setup
    String _url = getBaseUri().build().toString();

    // establish connection
    URL url = new URL(_url);
    HttpURLConnection conn = (HttpURLConnection) url.openConnection();

    conn.setRequestMethod("POST");
    addRequestHeader(conn, true);//from   www .  j  av  a 2s  . c  o m

    // prepare POST payload
    ByteArrayOutputStream json = new ByteArrayOutputStream();
    // this type of print stream allows us to get a string easily
    PrintStream ps = new PrintStream(json);
    // Create a generator to build the JSON string
    JsonGenerator jgen = JFACTORY.createGenerator(ps, JsonEncoding.UTF8);

    // Build JSON Object
    jgen.writeStartObject();
    jgen.writeStringField(Keys.Group.TITLE, g.getGroupTitle());
    jgen.writeArrayFieldStart(Keys.Group.MEMBERS);
    for (User member : g.getMembers()) {
        jgen.writeStartObject();
        jgen.writeStringField(Keys.User.ID, member.getID());
        jgen.writeEndObject();

    }
    jgen.writeEndArray();
    jgen.writeEndObject();
    jgen.close();

    // Get JSON Object payload from print stream
    String payload = json.toString("UTF8");
    ps.close();

    // send payload
    int responseCode = sendPostPayload(conn, payload);
    String response = getServerResponse(conn);

    // prepare to get the id of the created Meeting
    // Map<String, String> responseMap = new HashMap<String, String>();

    /*
     * result should get valid={"meetingID":"##"}
     */
    String result = new String();
    if (!response.isEmpty()) {
        // responseMap = MAPPER.readValue(response,
        // new TypeReference<HashMap<String, String>>() {
        // });
        JsonNode groupNode = MAPPER.readTree(response);
        if (!groupNode.has(Keys.Group.ID)) {
            result = "invalid";
        } else
            result = groupNode.get(Keys.Group.ID).asText();
    }

    if (!result.equalsIgnoreCase("invalid"))
        g.setID(result);

    conn.disconnect();
    return g;
}

From source file:com.meetingninja.csse.database.NotesDatabaseAdapter.java

public static String createNote(Note n) throws Exception {
    // Server URL setup
    String _url = getBaseUri().build().toString();

    // Establish connection
    URL url = new URL(_url);
    HttpURLConnection conn = (HttpURLConnection) url.openConnection();

    // add request header
    conn.setRequestMethod(IRequest.POST);
    //addRequestHeader(conn, true);

    // prepare POST payload
    ByteArrayOutputStream json = new ByteArrayOutputStream();
    // this type of print stream allows us to get a string easily
    PrintStream ps = new PrintStream(json);
    // Create a generator to build the JSON string
    JsonGenerator jgen = JFACTORY.createGenerator(ps, JsonEncoding.UTF8);

    // Build JSON Object
    jgen.writeStartObject();
    jgen.writeStringField(Keys.Note.CREATED_BY, n.getCreatedBy());
    jgen.writeStringField(Keys.Note.TITLE, n.getTitle());
    jgen.writeStringField(Keys.Note.DESC, n.getDescription());
    jgen.writeStringField(Keys.Note.CONTENT, n.getContent());
    jgen.writeStringField(Keys.Note.UPDATED, n.getDateCreated());
    jgen.writeEndObject();/*from  ww w  . java  2  s. com*/
    jgen.close();

    // Get JSON Object payload from print stream
    String payload = json.toString("UTF8");
    Log.d("CREATENOTE_payload", payload);
    ps.close();

    // Send payload
    int responseCode = sendPostPayload(conn, payload);
    String response = getServerResponse(conn);
    Log.d("CREATENOTE_response", response);

    String ID = "";
    if (!response.isEmpty()) {
        JsonNode tree = MAPPER.readTree(response);
        if (!tree.has(Keys.Note.ID))
            ID = "-1";
        else
            ID = tree.get(Keys.Note.ID).asText();
    }

    conn.disconnect();
    return ID;
}

From source file:com.meetingninja.csse.database.TaskDatabaseAdapter.java

private static String getEditPayload(String taskID, String field, String value) throws IOException {
    ByteArrayOutputStream json = new ByteArrayOutputStream();
    // this type of print stream allows us to get a string easily
    PrintStream ps = new PrintStream(json);
    // Create a generator to build the JSON string
    JsonGenerator jgen = JFACTORY.createGenerator(ps, JsonEncoding.UTF8);
    // Build JSON Object for Title
    jgen.writeStartObject();
    jgen.writeStringField(Keys.Task.ID, taskID);
    jgen.writeStringField("field", field);
    jgen.writeStringField("value", value);
    jgen.writeEndObject();//from w  w  w . j av  a 2 s.c  o m
    jgen.close();
    String payload = json.toString("UTF8");
    ps.close();
    return payload;
}

From source file:com.meetingninja.csse.database.TaskDatabaseAdapter.java

public static Task createTask(Task t) throws IOException {
    String _url = getBaseUri().build().toString();
    URL url = new URL(_url);
    HttpURLConnection conn = (HttpURLConnection) url.openConnection();

    // add request header
    conn.setRequestMethod(IRequest.POST);
    addRequestHeader(conn, false);/*from   w ww  .  j  a va  2s . c o  m*/
    ByteArrayOutputStream json = new ByteArrayOutputStream();
    // this type of print stream allows us to get a string easily
    PrintStream ps = new PrintStream(json);
    // Create a generator to build the JSON string
    JsonGenerator jgen = JFACTORY.createGenerator(ps, JsonEncoding.UTF8);
    // Build JSON Object for Title
    jgen.writeStartObject();
    jgen.writeStringField(Keys.Task.TITLE, t.getTitle());
    jgen.writeStringField(Keys.Task.COMPLETED, Boolean.toString(t.getIsCompleted()));
    jgen.writeStringField(Keys.Task.DESC, t.getDescription());
    jgen.writeStringField(Keys.Task.DEADLINE, Long.toString(t.getEndTimeInMillis()));
    jgen.writeStringField(Keys.Task.DATE_CREATED, t.getDateCreated());
    jgen.writeStringField(Keys.Task.DATE_ASSIGNED, t.getDateAssigned());
    jgen.writeStringField(Keys.Task.CRITERIA, t.getCompletionCriteria());
    jgen.writeStringField(Keys.Task.ASSIGNED_TO, t.getAssignedTo());
    jgen.writeStringField(Keys.Task.ASSIGNED_FROM, t.getAssignedFrom());
    jgen.writeStringField(Keys.Task.CREATED_BY, t.getCreatedBy());
    jgen.writeEndObject();
    jgen.close();

    String payload = json.toString("UTF8");
    ps.close();
    // Get server response
    sendPostPayload(conn, payload);
    String response = getServerResponse(conn);
    Map<String, String> responseMap = new HashMap<String, String>();
    if (responseMap.containsKey(Keys.Task.ID)) {
        t.setID(responseMap.get(Keys.Task.ID));
    }
    return t;
}

From source file:com.meetingninja.csse.database.MeetingDatabaseAdapter.java

public static Meeting createMeeting(String userID, Meeting m) throws IOException, MalformedURLException {
    // Server URL setup
    String _url = getBaseUri().appendPath(userID).build().toString();

    // establish connection
    URL url = new URL(_url);
    HttpURLConnection conn = (HttpURLConnection) url.openConnection();

    conn.setRequestMethod("POST");
    addRequestHeader(conn, true);//from w  w w  . j ava2s.com

    // prepare POST payload
    ByteArrayOutputStream json = new ByteArrayOutputStream();
    // this type of print stream allows us to get a string easily
    PrintStream ps = new PrintStream(json);
    // Create a generator to build the JSON string
    JsonGenerator jgen = JFACTORY.createGenerator(ps, JsonEncoding.UTF8);

    // Build JSON Object
    jgen.writeStartObject();
    jgen.writeStringField(Keys.User.ID, userID);
    jgen.writeStringField(Keys.Meeting.TITLE, m.getTitle());
    jgen.writeStringField(Keys.Meeting.LOCATION, m.getLocation());
    jgen.writeStringField(Keys.Meeting.DATETIME, m.getStartTime());
    jgen.writeStringField(Keys.Meeting.OTHEREND, m.getEndTime());
    jgen.writeStringField(Keys.Meeting.DESC, m.getDescription());
    jgen.writeArrayFieldStart(Keys.Meeting.ATTEND);
    // TODO: Add attendees to meeting
    // for (String attendee : m.getAttendance()) {
    // if (attendee.isAttending()) {
    jgen.writeStartObject();
    jgen.writeStringField(Keys.User.ID, userID);
    jgen.writeEndObject();
    // }
    // }
    jgen.writeEndArray();
    jgen.writeEndObject();
    jgen.close();

    // Get JSON Object payload from print stream
    String payload = json.toString("UTF8");
    ps.close();

    // send payload
    int responseCode = sendPostPayload(conn, payload);
    String response = getServerResponse(conn);

    // prepare to get the id of the created Meeting
    JsonNode responseMap;
    m.setID(404);
    Meeting created = new Meeting(m);
    /*
     * result should get valid={"meetingID":"##"}
     */
    //      String result = new String();
    if (!response.isEmpty()) {
        responseMap = MAPPER.readTree(response);
        if (responseMap.has(Keys.Meeting.ID))
            created.setID(responseMap.get(Keys.Meeting.ID).asText());
    }

    //      if (!result.equalsIgnoreCase("invalid"))
    //         created.setID(result);

    conn.disconnect();
    return created;
}

From source file:com.meetingninja.csse.database.AgendaDatabaseAdapter.java

public static JsonNode update(String agendaID, Map<String, String> key_values)
        throws JsonGenerationException, IOException, InterruptedException {
    // prepare POST payload
    ByteArrayOutputStream json = new ByteArrayOutputStream();
    // this type of print stream allows us to get a string easily
    PrintStream ps = new PrintStream(json);

    // Create a generator to build the JSON string
    JsonGenerator jgen = JFACTORY.createGenerator(ps, JsonEncoding.UTF8);
    for (String key : key_values.keySet()) {
        jgen.flush();/* w w w .java  2 s.c  o m*/
        // Build JSON Object
        jgen.writeStartObject();
        jgen.writeStringField(Keys.Agenda.ID, agendaID);
        jgen.writeStringField("field", key);
        jgen.writeStringField("value", key_values.get(key));
        jgen.writeEndObject();
        jgen.writeRaw("\f"); // write a form-feed to separate the payloads
    }

    jgen.close();
    // Get JSON Object payload from print stream
    String payload = json.toString("UTF8");
    ps.close();
    // The backend can only update a single field at a time
    String[] payloads = payload.split("\f\\s*"); // split at each form-feed
    Thread t = new Thread(new Thread(new Runnable() {
        @Override
        public void run() {
            try {
                Thread.sleep(500);
            } catch (InterruptedException e) {
                e.getLocalizedMessage();
            }
        }
    }));
    String response = "";
    for (String p : payloads) {
        t.run();
        response = updateHelper(p);
    }
    return MAPPER.readTree(response);
}

From source file:com.infinities.skyport.util.JsonUtil.java

public static String toLegendJson(Throwable e) {
    StringWriter wtr = new StringWriter();
    try {/* w w  w. j a  v  a2 s. c  o m*/
        JsonGenerator g = new JsonFactory().createGenerator(wtr);
        g.writeStartArray();
        g.writeStartObject();
        g.writeStringField("RES", "FALSE");
        g.writeStringField("REASON", e.toString());
        // g.writeStringField("REASON", Objects.firstNonNull(e.getMessage(),
        // e.toString()));
        g.writeEndObject();
        g.writeEndArray();
        g.close();
    } catch (Exception ee) {
        ArrayNode array = getObjectMapper().createArrayNode();
        ObjectNode reason = getObjectMapper().createObjectNode();
        ObjectNode status = getObjectMapper().createObjectNode();

        status.put(JsonConstants.STATUS, String.valueOf("FALSE"));
        reason.put(JsonConstants.REASON, "an unexpected error occurred");
        array.add(status).add(reason);

        // "[{\"RES\":\"FALSE\"}, {\"REASON\":\"an unexpected error occurred\"}]";
        return array.toString();
    }

    return wtr.toString();
}