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

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

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Introduction

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

Prototype

public void writeStringField(String fieldName, String value) throws IOException, JsonGenerationException

Source Link

Document

Convenience method for outputting a field entry ("member") that has a String value.

Usage

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 www  .  jav  a 2 s .c om*/
    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  av a 2 s  .  c om*/

    // 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();/*from  w w w. j  av  a  2s  .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 ww  .j av a  2s  . co  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();
}

From source file:org.elasticsearch.client.sniff.HostsSnifferTests.java

private static SniffResponse buildSniffResponse(HostsSniffer.Scheme scheme) throws IOException {
    int numNodes = RandomInts.randomIntBetween(getRandom(), 1, 5);
    List<HttpHost> hosts = new ArrayList<>(numNodes);
    JsonFactory jsonFactory = new JsonFactory();
    StringWriter writer = new StringWriter();
    JsonGenerator generator = jsonFactory.createGenerator(writer);
    generator.writeStartObject();/*from   w ww  . ja v  a 2  s.c  o m*/
    if (getRandom().nextBoolean()) {
        generator.writeStringField("cluster_name", "elasticsearch");
    }
    if (getRandom().nextBoolean()) {
        generator.writeObjectFieldStart("bogus_object");
        generator.writeEndObject();
    }
    generator.writeObjectFieldStart("nodes");
    for (int i = 0; i < numNodes; i++) {
        String nodeId = RandomStrings.randomAsciiOfLengthBetween(getRandom(), 5, 10);
        generator.writeObjectFieldStart(nodeId);
        if (getRandom().nextBoolean()) {
            generator.writeObjectFieldStart("bogus_object");
            generator.writeEndObject();
        }
        if (getRandom().nextBoolean()) {
            generator.writeArrayFieldStart("bogus_array");
            generator.writeStartObject();
            generator.writeEndObject();
            generator.writeEndArray();
        }
        boolean isHttpEnabled = rarely() == false;
        if (isHttpEnabled) {
            String host = "host" + i;
            int port = RandomInts.randomIntBetween(getRandom(), 9200, 9299);
            HttpHost httpHost = new HttpHost(host, port, scheme.toString());
            hosts.add(httpHost);
            generator.writeObjectFieldStart("http");
            if (getRandom().nextBoolean()) {
                generator.writeArrayFieldStart("bound_address");
                generator.writeString("[fe80::1]:" + port);
                generator.writeString("[::1]:" + port);
                generator.writeString("127.0.0.1:" + port);
                generator.writeEndArray();
            }
            if (getRandom().nextBoolean()) {
                generator.writeObjectFieldStart("bogus_object");
                generator.writeEndObject();
            }
            generator.writeStringField("publish_address", httpHost.toHostString());
            if (getRandom().nextBoolean()) {
                generator.writeNumberField("max_content_length_in_bytes", 104857600);
            }
            generator.writeEndObject();
        }
        if (getRandom().nextBoolean()) {
            String[] roles = { "master", "data", "ingest" };
            int numRoles = RandomInts.randomIntBetween(getRandom(), 0, 3);
            Set<String> nodeRoles = new HashSet<>(numRoles);
            for (int j = 0; j < numRoles; j++) {
                String role;
                do {
                    role = RandomPicks.randomFrom(getRandom(), roles);
                } while (nodeRoles.add(role) == false);
            }
            generator.writeArrayFieldStart("roles");
            for (String nodeRole : nodeRoles) {
                generator.writeString(nodeRole);
            }
            generator.writeEndArray();
        }
        int numAttributes = RandomInts.randomIntBetween(getRandom(), 0, 3);
        Map<String, String> attributes = new HashMap<>(numAttributes);
        for (int j = 0; j < numAttributes; j++) {
            attributes.put("attr" + j, "value" + j);
        }
        if (numAttributes > 0) {
            generator.writeObjectFieldStart("attributes");
        }
        for (Map.Entry<String, String> entry : attributes.entrySet()) {
            generator.writeStringField(entry.getKey(), entry.getValue());
        }
        if (numAttributes > 0) {
            generator.writeEndObject();
        }
        generator.writeEndObject();
    }
    generator.writeEndObject();
    generator.writeEndObject();
    generator.close();
    return SniffResponse.buildResponse(writer.toString(), hosts);
}

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

public static Project createProject(Project p) 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);/* w  ww .j a  v a  2 s . c om*/

    // 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.Project.TITLE, p.getProjectTitle());
    jgen.writeArrayFieldStart(Keys.Project.MEETINGS);
    for (Meeting meeting : p.getMeetings()) {
        jgen.writeStartObject();
        jgen.writeStringField(Keys.Meeting.ID, meeting.getID());
        jgen.writeEndObject();

    }
    jgen.writeEndArray();
    jgen.writeArrayFieldStart(Keys.Project.NOTES);
    for (Note note : p.getNotes()) {
        jgen.writeStartObject();
        jgen.writeStringField(Keys.Note.ID, note.getID());
        jgen.writeEndObject();

    }
    jgen.writeEndArray();
    jgen.writeArrayFieldStart(Keys.Project.MEMBERS);
    for (User member : p.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
    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 projectNode = MAPPER.readTree(response);
        if (!projectNode.has(Keys.Project.ID)) {
            result = "invalid";
        } else
            result = projectNode.get(Keys.Project.ID).asText();
    }

    if (!result.equalsIgnoreCase("invalid"))
        p.setProjectID(result);

    conn.disconnect();
    return p;
}

From source file:org.elasticsearch.client.sniff.ElasticsearchHostsSnifferTests.java

private static SniffResponse buildSniffResponse(ElasticsearchHostsSniffer.Scheme scheme) throws IOException {
    int numNodes = RandomNumbers.randomIntBetween(getRandom(), 1, 5);
    List<HttpHost> hosts = new ArrayList<>(numNodes);
    JsonFactory jsonFactory = new JsonFactory();
    StringWriter writer = new StringWriter();
    JsonGenerator generator = jsonFactory.createGenerator(writer);
    generator.writeStartObject();/* ww w.  j  a  v a2s  .  c o m*/
    if (getRandom().nextBoolean()) {
        generator.writeStringField("cluster_name", "elasticsearch");
    }
    if (getRandom().nextBoolean()) {
        generator.writeObjectFieldStart("bogus_object");
        generator.writeEndObject();
    }
    generator.writeObjectFieldStart("nodes");
    for (int i = 0; i < numNodes; i++) {
        String nodeId = RandomStrings.randomAsciiOfLengthBetween(getRandom(), 5, 10);
        generator.writeObjectFieldStart(nodeId);
        if (getRandom().nextBoolean()) {
            generator.writeObjectFieldStart("bogus_object");
            generator.writeEndObject();
        }
        if (getRandom().nextBoolean()) {
            generator.writeArrayFieldStart("bogus_array");
            generator.writeStartObject();
            generator.writeEndObject();
            generator.writeEndArray();
        }
        boolean isHttpEnabled = rarely() == false;
        if (isHttpEnabled) {
            String host = "host" + i;
            int port = RandomNumbers.randomIntBetween(getRandom(), 9200, 9299);
            HttpHost httpHost = new HttpHost(host, port, scheme.toString());
            hosts.add(httpHost);
            generator.writeObjectFieldStart("http");
            if (getRandom().nextBoolean()) {
                generator.writeArrayFieldStart("bound_address");
                generator.writeString("[fe80::1]:" + port);
                generator.writeString("[::1]:" + port);
                generator.writeString("127.0.0.1:" + port);
                generator.writeEndArray();
            }
            if (getRandom().nextBoolean()) {
                generator.writeObjectFieldStart("bogus_object");
                generator.writeEndObject();
            }
            generator.writeStringField("publish_address", httpHost.toHostString());
            if (getRandom().nextBoolean()) {
                generator.writeNumberField("max_content_length_in_bytes", 104857600);
            }
            generator.writeEndObject();
        }
        if (getRandom().nextBoolean()) {
            String[] roles = { "master", "data", "ingest" };
            int numRoles = RandomNumbers.randomIntBetween(getRandom(), 0, 3);
            Set<String> nodeRoles = new HashSet<>(numRoles);
            for (int j = 0; j < numRoles; j++) {
                String role;
                do {
                    role = RandomPicks.randomFrom(getRandom(), roles);
                } while (nodeRoles.add(role) == false);
            }
            generator.writeArrayFieldStart("roles");
            for (String nodeRole : nodeRoles) {
                generator.writeString(nodeRole);
            }
            generator.writeEndArray();
        }
        int numAttributes = RandomNumbers.randomIntBetween(getRandom(), 0, 3);
        Map<String, String> attributes = new HashMap<>(numAttributes);
        for (int j = 0; j < numAttributes; j++) {
            attributes.put("attr" + j, "value" + j);
        }
        if (numAttributes > 0) {
            generator.writeObjectFieldStart("attributes");
        }
        for (Map.Entry<String, String> entry : attributes.entrySet()) {
            generator.writeStringField(entry.getKey(), entry.getValue());
        }
        if (numAttributes > 0) {
            generator.writeEndObject();
        }
        generator.writeEndObject();
    }
    generator.writeEndObject();
    generator.writeEndObject();
    generator.close();
    return SniffResponse.buildResponse(writer.toString(), hosts);
}

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

public static void updateProject(Project p) 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();/*from  w  ww  . j av  a 2 s  .c om*/
    jgen.writeStringField(Keys.Project.ID, p.getProjectID());
    jgen.writeStringField("field", Keys.Project.TITLE);
    jgen.writeStringField("value", p.getProjectTitle());
    jgen.writeEndObject();
    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 Project members
    jgen.writeStartObject();
    jgen.writeStringField(Keys.Project.ID, p.getProjectID());
    jgen.writeStringField("field", Keys.Project.MEETINGS);
    jgen.writeArrayFieldStart("value");
    for (Meeting meeting : p.getMeetings()) {
        jgen.writeStartObject();
        jgen.writeStringField(Keys.Meeting.ID, meeting.getID());
        jgen.writeEndObject();

    }
    jgen.writeEndArray();
    jgen.writeEndObject();
    jgen.close();
    String payloadMeetings = 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 Project members
    jgen.writeStartObject();
    jgen.writeStringField(Keys.Project.ID, p.getProjectID());
    jgen.writeStringField("field", Keys.Project.NOTES);
    jgen.writeArrayFieldStart("value");
    for (Note note : p.getNotes()) {
        jgen.writeStartObject();
        jgen.writeStringField(Keys.Note.ID, note.getID());
        jgen.writeEndObject();

    }
    jgen.writeEndArray();
    jgen.writeEndObject();
    jgen.close();
    String payloadNotes = 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 Project members
    jgen.writeStartObject();
    jgen.writeStringField(Keys.Project.ID, p.getProjectID());
    jgen.writeStringField("field", Keys.Project.MEMBERS);
    jgen.writeArrayFieldStart("value");
    for (User member : p.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
    updateHelper(payloadTitle);
    updateHelper(payloadMeetings);
    updateHelper(payloadNotes);
    System.out.println(updateHelper(payloadMembers));

}

From source file:com.attribyte.essem.ESReporter.java

static final void writeStringField(final JsonGenerator generator, final String name, final String value)
        throws IOException {
    if (value != null) {
        generator.writeStringField(name, value);
    } else {/*from ww w.  j a  v a  2 s .c o  m*/
        generator.writeNullField(name);
    }
}

From source file:com.attribyte.essem.ESReporter.java

/**
 * Generates the ES bulk api "action" command.
 * @param generator The JSON generator./*from   w ww  .ja v  a  2  s. c o  m*/
 * @param objType The object type.
 * @throws IOException
 */
static final void generateAction(final JsonGenerator generator, final String objType) throws IOException {
    generator.writeStartObject();
    generator.writeObjectFieldStart("index");
    generator.writeStringField("_type", objType);
    generator.writeEndObject();
    generator.writeEndObject();
    generator.flush();
}