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

Introduction

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

Prototype

public abstract void writeObject(Object pojo) throws IOException, JsonProcessingException;

Source Link

Document

Method for writing given Java object (POJO) as Json.

Usage

From source file:org.webpda.server.core.servermessage.PVEventMessage.java

@Override
public String createJson() throws JsonProcessingException {
    try {/* w  w  w . j  a  v  a2 s. c o  m*/
        ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
        JsonGenerator jg = JsonUtil.jsonFactory.createGenerator(outputStream);
        jg.writeStartObject();
        jg.writeNumberField(PVID, id);
        jg.writeStringField(EVENT, evt.name());
        jg.writeFieldName(DATA);
        if (isRawJson)
            jg.writeRaw(":" + data);
        else
            jg.writeObject(data);
        jg.writeEndObject();
        jg.close();
        String s = outputStream.toString(Constants.CHARSET);
        //         System.out.println(s.length() + s);
        outputStream.close();
        return s;
    } catch (Exception e) {
        LoggerUtil.getLogger().log(Level.SEVERE, "Failed to create json.", e);
    }

    return null;
}

From source file:models.DerivedRelationSerializer.java

@Override
public void serialize(DerivedRelation derivedRelation, JsonGenerator jgen, SerializerProvider provider)
        throws IOException {
    jgen.writeStartObject();//from   w  ww.j  av  a2  s  .c om
    jgen.writeNumberField("exponent", derivedRelation.getExponent());
    jgen.writeStringField("sourceId", derivedRelation.getSource().getId());
    jgen.writeFieldName("sourceUnit");
    jgen.writeObject(derivedRelation.getSource().getUnit());
    jgen.writeFieldName("sourceKeywords");
    jgen.writeObject(derivedRelation.getSource().getKeywords());
    jgen.writeStringField("coeffId", derivedRelation.getCoeff().getId());
    jgen.writeFieldName("coeffUnit");
    jgen.writeObject(derivedRelation.getCoeff().getUnit());
    jgen.writeFieldName("coeffKeywords");
    jgen.writeObject(derivedRelation.getCoeff().getKeywords());
    jgen.writeStringField("destinationId", derivedRelation.getDestination().getId());
    jgen.writeFieldName("destinationUnit");
    jgen.writeObject(derivedRelation.getDestination().getUnit());
    jgen.writeFieldName("destinationKeywords");
    jgen.writeObject(derivedRelation.getDestination().getKeywords());
    jgen.writeFieldName("sourceRelation");
    jgen.writeStartObject();
    SourceRelation sourceRelation = derivedRelation.getSourceRelation();
    jgen.writeStringField("id", sourceRelation.getId());
    jgen.writeNumberField("exponent", sourceRelation.getExponent());

    jgen.writeFieldName("type");
    jgen.writeObject(sourceRelation.getType());

    jgen.writeFieldName("source");
    writeSimplifiedGroup(sourceRelation.getSource(), jgen);

    jgen.writeFieldName("coeff");
    writeSimplifiedGroup(sourceRelation.getCoeff(), jgen);

    jgen.writeFieldName("destination");
    writeSimplifiedGroup(sourceRelation.getDestination(), jgen);
    jgen.writeEndObject();
    jgen.writeEndObject();
}

From source file:org.hawkular.apm.server.elasticsearch.SpanServiceElasticsearch.java

private String serialize(Object object) throws IOException {
    StringWriter out = new StringWriter();

    JsonGenerator gen = mapper.getFactory().createGenerator(out);
    gen.writeObject(object);

    gen.close();//from ww w  .  j a va  2 s  . co m
    out.close();

    return out.toString();
}

From source file:models.ProcessSerializer.java

@Override
public void serialize(Process process, JsonGenerator jgen, SerializerProvider provider) throws IOException {
    jgen.writeStartObject();/* w  w w  . j ava 2  s  .  c  om*/
    jgen.writeStringField("id", process.getId());
    jgen.writeFieldName("unit");
    jgen.writeObject(process.getUnit());
    jgen.writeFieldName("keywords");
    jgen.writeObject(process.getKeywords());

    jgen.writeFieldName("groups");
    jgen.writeStartArray();
    for (Group group : process.getGroups()) {
        jgen.writeStartObject();
        jgen.writeStringField("id", group.getId());
        jgen.writeStringField("label", group.getLabel());
        jgen.writeEndObject();
    }
    jgen.writeEndArray();

    jgen.writeFieldName("relations");
    jgen.writeStartArray();
    for (DerivedRelation relation : process.getUpstreamDerivedRelations()) {
        jgen.writeObject(relation);
    }
    for (DerivedRelation relation : process.getDownstreamDerivedRelations()) {
        jgen.writeObject(relation);
    }
    jgen.writeEndArray();

    jgen.writeFieldName("impacts");
    jgen.writeStartObject();
    for (Impact impact : process.getImpacts().values()) {
        jgen.writeFieldName(impact.getType().getId());
        jgen.writeStartObject();
        jgen.writeFieldName("value");
        jgen.writeObject(impact.getValue());
        jgen.writeFieldName("upstream");
        jgen.writeObject(getUpstreamImpacts(process, impact));
        jgen.writeFieldName("composition");
        jgen.writeObject(getImpactComposition(process, impact));
        jgen.writeEndObject();
    }
    jgen.writeEndObject();

    jgen.writeFieldName("flows");
    jgen.writeStartObject();
    for (ElementaryFlow flow : process.getCalculatedFlows().values()) {
        jgen.writeFieldName(flow.getType().getId());
        jgen.writeStartObject();
        jgen.writeFieldName("value");
        jgen.writeObject(flow.getValue());
        jgen.writeFieldName("upstream");
        jgen.writeObject(getUpstreamFlows(process, flow));
        jgen.writeEndObject();
    }
    jgen.writeEndObject();

    jgen.writeEndObject();
}

From source file:org.pentaho.metaverse.impl.model.kettle.json.JobMetaJsonSerializer.java

@Override
protected void serializeHops(JobMeta meta, JsonGenerator json) throws IOException {
    // Hops//from w  w w  .  jav  a  2 s .c om
    json.writeArrayFieldStart(JSON_PROPERTY_HOPS);
    int numberOfHops = meta.nrJobHops();
    for (int i = 0; i < numberOfHops; i++) {
        JobHopMeta hopMeta = meta.getJobHop(i);
        HopInfo hopInfo = new HopInfo(hopMeta);
        json.writeObject(hopInfo);
    }
    json.writeEndArray();
}

From source file:org.pentaho.metaverse.impl.model.kettle.json.TransMetaJsonSerializer.java

@Override
protected void serializeHops(TransMeta meta, JsonGenerator json) throws IOException {
    // Hops//  w w w .j  a  va 2s .com
    json.writeArrayFieldStart(JSON_PROPERTY_HOPS);
    int numberOfHops = meta.nrTransHops();
    for (int i = 0; i < numberOfHops; i++) {
        TransHopMeta hopMeta = meta.getTransHop(i);
        HopInfo hopInfo = new HopInfo(hopMeta);
        json.writeObject(hopInfo);
    }
    json.writeEndArray();
}

From source file:javasnack.snacks.json.PojoEncodeJackson.java

@Override
public void run() {
    ObjectMapper objectMapper = new ObjectMapper();
    try {/*www .  j a v  a  2s. com*/
        String jsonout = objectMapper.writeValueAsString(new EncodePojo());
        System.out.println("--- simple jackson encode ---");
        System.out.println(jsonout);
        String jsonout2 = objectMapper.writerWithDefaultPrettyPrinter().writeValueAsString(new EncodePojo());
        System.out.println("--- default pretty-print jackson encode ---");
        System.out.println(jsonout2);
        System.out.println("--- streaming jackson encode ---");
        JsonFactory jsonFactory = objectMapper.getFactory();
        Writer out = new OutputStreamWriter(System.out);
        JsonGenerator jg = jsonFactory.createGenerator(out);
        jg.setPrettyPrinter(new DefaultPrettyPrinter());
        jg.writeStartObject();
        jg.writeStringField("message", "success");
        jg.writeNumberField("count", 10);
        jg.writeArrayFieldStart("records");
        for (int i = 0; i < 10; i++) {
            jg.writeObject(new EncodePojo());
            Thread.sleep(100);
            jg.flush();
        }
        jg.writeEndArray();
        jg.writeEndObject();
        jg.close();
    } catch (JsonProcessingException e) {
        e.printStackTrace();
    } catch (Exception e) {
        e.printStackTrace();
    }
}

From source file:com.ning.metrics.action.hdfs.data.Row.java

public void toJSON(final JsonGenerator generator) throws IOException {
    int i = 0;/*from   w  w  w .ja v  a  2s .c o m*/
    generator.writeStartObject();
    for (T item : data) {
        generator.writeFieldName(schema.getFieldNameByPosition(i));
        generator.writeObject(getJsonValue(item));
        i++;
    }
    generator.writeEndObject();
    generator.flush();
}

From source file:com.infinities.skyport.compute.entity.serializer.ShortSelfRecursiveSerializer.java

@Override
public void serialize(Serializable value, JsonGenerator jgen, SerializerProvider provider)
        throws IOException, JsonGenerationException {

    ObjectMapper mapper = JsonUtil.getObjectMapper();

    ObjectWriter writer = mapper.writerWithView(Views.Short.class);
    StringWriter sw = new StringWriter();
    writer.writeValue(sw, value);//from  ww w.  ja va  2 s.c o  m

    JsonNode rootNode = mapper.readTree(sw.toString());

    jgen.writeObject(rootNode);

}

From source file:com.infinities.skyport.compute.entity.serializer.BasicSelfRecursiveSerializer.java

@Override
public void serialize(Collection<?> value, JsonGenerator jgen, SerializerProvider provider)
        throws IOException, JsonGenerationException {

    ObjectMapper mapper = JsonUtil.getObjectMapper();

    ObjectWriter writer = mapper.writerWithView(Views.Basic.class);
    StringWriter sw = new StringWriter();
    writer.writeValue(sw, value);/*w  w  w  .  j a va 2 s  .  co  m*/

    JsonNode rootNode = mapper.readTree(sw.toString());

    jgen.writeObject(rootNode);

}