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

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:org.bndtools.rt.repository.marshall.CapReqJson.java

private static void writeDirective(String key, String value, JsonGenerator generator) throws IOException {
    generator.writeStartObject();
    generator.writeStringField("name", key);
    generator.writeStringField("value", value);
    generator.writeEndObject();/*w w  w. jav  a 2s  .  c  om*/
}

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From source file:com.netflix.hystrix.contrib.sample.stream.HystrixConfigurationJsonStream.java

public static String convertToString(HystrixConfiguration config) throws IOException {
    StringWriter jsonString = new StringWriter();
    JsonGenerator json = jsonFactory.createGenerator(jsonString);

    json.writeStartObject();
    json.writeStringField("type", "HystrixConfig");
    json.writeObjectFieldStart("commands");
    for (Map.Entry<HystrixCommandKey, HystrixCommandConfiguration> entry : config.getCommandConfig()
            .entrySet()) {/*from w w  w.  j av a  2s  .  c  o  m*/
        final HystrixCommandKey key = entry.getKey();
        final HystrixCommandConfiguration commandConfig = entry.getValue();
        writeCommandConfigJson(json, key, commandConfig);

    }
    json.writeEndObject();

    json.writeObjectFieldStart("threadpools");
    for (Map.Entry<HystrixThreadPoolKey, HystrixThreadPoolConfiguration> entry : config.getThreadPoolConfig()
            .entrySet()) {
        final HystrixThreadPoolKey threadPoolKey = entry.getKey();
        final HystrixThreadPoolConfiguration threadPoolConfig = entry.getValue();
        writeThreadPoolConfigJson(json, threadPoolKey, threadPoolConfig);
    }
    json.writeEndObject();

    json.writeObjectFieldStart("collapsers");
    for (Map.Entry<HystrixCollapserKey, HystrixCollapserConfiguration> entry : config.getCollapserConfig()
            .entrySet()) {
        final HystrixCollapserKey collapserKey = entry.getKey();
        final HystrixCollapserConfiguration collapserConfig = entry.getValue();
        writeCollapserConfigJson(json, collapserKey, collapserConfig);
    }
    json.writeEndObject();
    json.writeEndObject();
    json.close();

    return jsonString.getBuffer().toString();
}

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From source file:org.apache.orc.bench.convert.json.JsonWriter.java

static void printStruct(JsonGenerator writer, StructColumnVector batch, TypeDescription schema, int row)
        throws IOException {
    writer.writeStartObject();
    List<String> fieldNames = schema.getFieldNames();
    List<TypeDescription> fieldTypes = schema.getChildren();
    for (int i = 0; i < fieldTypes.size(); ++i) {
        writer.writeFieldName(fieldNames.get(i));
        printValue(writer, batch.fields[i], fieldTypes.get(i), row);
    }//w  w  w .  j  ava2 s.c  om
    writer.writeEndObject();
}

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From source file:org.bndtools.rt.repository.marshall.CapReqJson.java

private static void writeAttribute(String key, Object value, JsonGenerator generator) throws IOException {
    generator.writeStartObject();
    generator.writeStringField("name", key);
    if (value instanceof Version) {
        generator.writeStringField("value", value.toString());
        generator.writeStringField("type", "Version");
    } else if (value instanceof Double || value instanceof Float) {
        generator.writeStringField("value", value.toString());
        generator.writeStringField("type", "Double");
    } else if (value instanceof Long || value instanceof Integer) {
        generator.writeStringField("value", value.toString());
        generator.writeStringField("type", "Long");
    } else if (value instanceof String) {
        generator.writeStringField("value", (String) value);
    } else if (value == null) {
        throw new IOException("null values not supported");
    } else {/*from w w w. ja  v a  2s . c om*/
        throw new IOException("Unsupported value type " + value.getClass());
    }
    generator.writeEndObject();
}

---

From source file:org.bndtools.rt.repository.marshall.CapReqJson.java

public static void writeRequirement(Requirement requirement, JsonGenerator generator) throws IOException {
    generator.writeStartObject();
    generator.writeStringField("ns", requirement.getNamespace());

    Map<String, Object> attrs = requirement.getAttributes();
    if (!attrs.isEmpty()) {
        generator.writeArrayFieldStart("attrs");
        for (Entry<String, Object> entry : attrs.entrySet()) {
            writeAttribute(entry.getKey(), entry.getValue(), generator);
        }//  w  w w  .  j a v  a 2  s. c o  m
        generator.writeEndArray();
    }

    Map<String, String> dirs = requirement.getDirectives();
    if (!dirs.isEmpty()) {
        generator.writeArrayFieldStart("dirs");
        for (Entry<String, String> entry : dirs.entrySet()) {
            writeDirective(entry.getKey(), entry.getValue(), generator);
        }
        generator.writeEndArray();
    }

    generator.writeEndObject();
}

---

From source file:org.bndtools.rt.repository.marshall.CapReqJson.java

public static void writeCapability(Capability capability, JsonGenerator generator) throws IOException {
    generator.writeStartObject();
    generator.writeStringField("ns", capability.getNamespace());

    Map<String, Object> attrs = capability.getAttributes();
    if (!attrs.isEmpty()) {
        generator.writeArrayFieldStart("attrs");
        for (Entry<String, Object> entry : attrs.entrySet()) {
            writeAttribute(entry.getKey(), entry.getValue(), generator);
        }//from w w  w. ja  v  a 2  s.  c o m
        generator.writeEndArray();
    }

    Map<String, String> dirs = capability.getDirectives();
    if (!dirs.isEmpty()) {
        generator.writeArrayFieldStart("dirs");
        for (Entry<String, String> entry : dirs.entrySet()) {
            writeDirective(entry.getKey(), entry.getValue(), generator);
        }
        generator.writeEndArray();
    }

    generator.writeEndObject();
}

---

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

public static Agenda createAgenda(Agenda create) throws IOException {
    Agenda newAgenda = new Agenda(create);
    // 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);/*  w w  w.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(); // start agenda
    jgen.writeStringField(Keys.Agenda.TITLE, create.getTitle());
    jgen.writeStringField(Keys.Agenda.MEETING, create.getAttachedMeetingID());
    jgen.writeArrayFieldStart(Keys.Agenda.TOPIC); // start topics
    MAPPER.writeValue(jgen, create.getTopics()); // recursively does
    // subtopics
    jgen.writeEndArray(); // end topics
    jgen.writeEndObject(); // end agenda
    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);

    newAgenda = parseAgenda(MAPPER.readTree(response));
    return newAgenda;
}

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From source file:eu.project.ttc.readers.TermSuiteJsonCasSerializer.java

public static void serialize(Writer writer, JCas jCas) throws IOException {

    JsonFactory jsonFactory = new JsonFactory();
    JsonGenerator jg = jsonFactory.createGenerator(writer);
    jg.useDefaultPrettyPrinter();/*from  www .ja  va  2 s  .c o  m*/
    jg.writeStartObject();
    jg.writeFieldName(F_SDI);
    writeSDI(jg, jCas);
    jg.writeFieldName(F_WORD_ANNOTATIONS);
    writeWordAnnotations(jg, jCas);
    jg.writeFieldName(F_TERM_OCC_ANNOTATIONS);
    writeTermOccAnnotations(jg, jCas);
    jg.writeFieldName(F_FIXED_EXPRESSIONS);
    writeFixedExpressions(jg, jCas);
    writeCoveredText(jg, jCas);
    jg.writeEndObject();
    jg.flush();
    writer.close();
}

---

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

public static List<Contact> addContact(String contactUserID) throws IOException {

    String _url = getBaseUri().build().toString();
    URL url = new URL(_url);
    HttpURLConnection conn = (HttpURLConnection) url.openConnection();
    conn.setRequestMethod(IRequest.PUT);
    addRequestHeader(conn, false);/*from   w ww . j a va2  s .c o  m*/
    SessionManager session = SessionManager.getInstance();
    String userID = session.getUserID();
    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.User.ID, userID);
    jgen.writeArrayFieldStart(Keys.User.CONTACTS);
    jgen.writeStartObject();
    jgen.writeStringField(Keys.User.CONTACTID, contactUserID);
    jgen.writeEndObject();
    jgen.writeEndArray();
    jgen.writeEndObject();
    jgen.close();
    String payload = json.toString("UTF8");
    ps.close();

    sendPostPayload(conn, payload);
    String response = getServerResponse(conn);

    // TODO: put add useful check here
    // User userContact=null;
    // String relationID=null;
    // String result = new String();
    // if (!response.isEmpty()) {
    // JsonNode contactNode = MAPPER.readTree(response);
    // if (!contactNode.has(Keys.User.ID)) {
    // result = "invalid";
    // } else {
    // result = contactNode.get(Keys.User.ID).asText();
    // userContact = getUserInfo(result);
    // relationID = contactNode.get(Keys.User.RELATIONID).asText();
    // }
    // }

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

    // Contact contact = new Contact(userContact,relationID);
    List<Contact> contacts = new ArrayList<Contact>();
    contacts = getContacts(userID);
    return contacts;
}

---

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

private static String getEditPayload(String noteID, 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.Note.ID, noteID);
    jgen.writeStringField("field", field);
    jgen.writeStringField("value", value);
    jgen.writeEndObject();/*from  www  . ja v a  2 s . co  m*/
    jgen.close();
    String payload = json.toString("UTF8");
    ps.close();
    Log.d("updatenotepayload", payload);
    return payload;
}

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