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.googlecode.jmxtrans.model.output.LibratoWriter2.java

@Override
public void write(@Nonnull Writer writer, @Nonnull Server server, @Nonnull Query query,
        @Nonnull Iterable<Result> results) throws IOException {
    Closer closer = Closer.create();//  ww w  .j av  a  2 s .  c o m
    try {
        JsonGenerator g = closer.register(jsonFactory.createGenerator(writer));
        g.writeStartObject();
        g.writeArrayFieldStart("counters");
        g.writeEndArray();

        String source = getSource(server);

        g.writeArrayFieldStart("gauges");
        for (Result result : results) {
            Map<String, Object> resultValues = result.getValues();
            for (Map.Entry<String, Object> values : resultValues.entrySet()) {
                if (isNumeric(values.getValue())) {
                    g.writeStartObject();
                    g.writeStringField("name", KeyUtils.getKeyString(query, result, values, typeNames));
                    if (source != null && !source.isEmpty()) {
                        g.writeStringField("source", source);
                    }
                    g.writeNumberField("measure_time", SECONDS.convert(result.getEpoch(), MILLISECONDS));
                    Object value = values.getValue();
                    if (value instanceof Integer) {
                        g.writeNumberField("value", (Integer) value);
                    } else if (value instanceof Long) {
                        g.writeNumberField("value", (Long) value);
                    } else if (value instanceof Float) {
                        g.writeNumberField("value", (Float) value);
                    } else if (value instanceof Double) {
                        g.writeNumberField("value", (Double) value);
                    }
                    g.writeEndObject();
                }
            }
        }
        g.writeEndArray();
        g.writeEndObject();
        g.flush();
    } catch (Throwable t) {
        throw closer.rethrow(t);
    } finally {
        closer.close();
    }
}

From source file:com.mattjbishop.halapino.EmbeddedSerializer.java

@Override
public void serialize(Map<String, List<HALRepresentation>> embeddedResources, JsonGenerator jgen,
        SerializerProvider provider) throws IOException, JsonProcessingException {

    if (embeddedResources != null) {
        jgen.writeStartObject();
        writeOutResources(embeddedResources, jgen);
        jgen.writeEndObject();//from ww  w . j a v  a  2  s . co m
    }

}

From source file:org.mashti.jetson.json.JsonResponseEncoder.java

void encodeResultOrException(final Integer id, final Object result, final Throwable exception,
        final ByteBuf out, final boolean error) throws RPCException {

    JsonGenerator generator = null;
    try {/*from w ww.  j a va 2s  .c o  m*/
        generator = createJsonGenerator(out);
        generator.writeStartObject();
        generator.writeObjectField(JsonRequestEncoder.ID_KEY, id);
        generator.writeObjectField(JsonRequestEncoder.VERSION_KEY, JsonRequestEncoder.DEFAULT_VERSION);
        if (error) {
            final JsonRpcError json_rpc_error = JsonRpcExceptions.toJsonRpcError(exception);
            generator.writeObjectField(ERROR_KEY, json_rpc_error);
        } else {
            generator.writeObjectField(RESULT_KEY, result);
        }
        generator.writeEndObject();
        generator.flush();
        generator.close();
    } catch (final JsonProcessingException e) {
        LOGGER.debug("failed to encode response", e);
        throw new InternalServerException(e);
    } catch (final IOException e) {
        LOGGER.debug("IO error occurred while encoding response", e);
        throw new TransportException(e);
    } finally {
        CloseableUtil.closeQuietly(generator);
    }
}

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

@Override
public void serialize(T meta, JsonGenerator json, SerializerProvider serializerProvider)
        throws IOException, JsonGenerationException {
    json.writeStartObject();
    writeBasicInfo(meta, json);//from   w w w. j  a  v  a2  s  .  c o m
    writeRepoAttributes(meta, json);
    writeExternalResources(meta, json, serializerProvider);
    writeCustom(meta, json, serializerProvider);
    json.writeEndObject();
}

From source file:com.twosigma.beakerx.chart.serializer.RastersSerializer.java

@Override
public void serialize(Rasters rasters, JsonGenerator jgen, SerializerProvider sp) throws IOException {
    validate(rasters);//from ww w. j a va  2s.  co m

    jgen.writeStartObject();

    jgen.writeObjectField(TYPE, SerializerUtil.getTypeName(rasters));
    jgen.writeObjectField("x", rasters.getX());
    jgen.writeObjectField("y", rasters.getY());
    jgen.writeObjectField("opacity", rasters.getOpacity());
    jgen.writeObjectField("visible", rasters.getVisible());
    jgen.writeObjectField("yAxis", rasters.getYAxis());
    jgen.writeObjectField("position", rasters.getPosition());
    jgen.writeObjectField("width", rasters.getWidth());
    jgen.writeObjectField("height", rasters.getHeight());

    // datastring will override file path/url
    if (rasters.getDataString() != null) {
        jgen.writeObjectField("value", Bytes2Base64(rasters.getDataString(), null));
    } else if (!rasters.getFilePath().isEmpty()) {
        String path = rasters.getFilePath();
        File file = new File(path);

        if (!file.exists()) {
            throw new FileNotFoundException("Cannot find file " + path);
        }

        byte[] picture = Files.readAllBytes(new File(path).toPath());
        String extension = "";
        int i = path.lastIndexOf('.');
        if (i > 0) {
            extension = path.substring(i + 1);
        }

        jgen.writeObjectField("value", Bytes2Base64(picture, extension));
    } else if (!rasters.getFileUrl().isEmpty()) {
        jgen.writeObjectField("value", rasters.getFileUrl());
    }

    jgen.writeEndObject();
}

From source file:com.joliciel.jochre.search.highlight.HighlightTerm.java

public void toJson(JsonGenerator jsonGen, DecimalFormat df) {
    try {//from   ww w  . j  a  v  a2 s  .  com
        jsonGen.writeStartObject();
        jsonGen.writeStringField("field", this.getField());
        jsonGen.writeNumberField("start", this.getStartOffset());
        jsonGen.writeNumberField("end", this.getEndOffset());
        jsonGen.writeNumberField("pageIndex", this.getPageIndex());
        jsonGen.writeNumberField("imageIndex", this.getImageIndex());
        double roundedWeight = df.parse(df.format(this.getWeight())).doubleValue();
        jsonGen.writeNumberField("weight", roundedWeight);
        jsonGen.writeEndObject();

        jsonGen.flush();
    } catch (java.text.ParseException e) {
        LogUtils.logError(LOG, e);
        throw new RuntimeException(e);
    } catch (IOException ioe) {
        LogUtils.logError(LOG, ioe);
        throw new RuntimeException(ioe);
    }
}

From source file:com.sdl.odata.renderer.json.writer.JsonServiceDocumentWriter.java

/**
 * Build an embedded json object that will have key-value attributes like
 * 'name' and 'url' (they are MUST), 'title' and 'kind'.
 *
 * @param jsonGenerator jsonGenerator//  w w  w  .ja  va  2 s.c o  m
 * @param entity        entitySet or singleton
 * @throws IOException
 */
private void writeObject(JsonGenerator jsonGenerator, Object entity) throws IOException {
    jsonGenerator.writeStartObject();

    writeName(jsonGenerator, entity);
    writeKind(jsonGenerator, entity);
    writeURL(jsonGenerator, entity);

    jsonGenerator.writeEndObject();
}

From source file:net.logstash.logback.marker.ObjectAppendingMarkerTest.java

@Test
public void testWriteTo() throws IOException {

    MyClass myObject = new MyClass("value");

    StringWriter writer = new StringWriter();
    JsonGenerator generator = FACTORY.createGenerator(writer);

    LogstashMarker marker = Markers.append("myObject", myObject);
    generator.writeStartObject();
    marker.writeTo(generator);//from  ww w.  j av a2  s. c  o m
    generator.writeEndObject();
    generator.flush();

    assertThat(writer.toString()).isEqualTo("{\"myObject\":{\"myField\":\"value\"}}");
}

From source file:org.calrissian.mango.json.ser.NodeSerializer.java

@Override
public void serialize(Node node, JsonGenerator jsonGenerator, SerializerProvider serializerProvider)
        throws IOException {

    jsonGenerator.writeStartObject();
    if (node instanceof ParentNode) {
        serialize((ParentNode) node, jsonGenerator, serializerProvider);
    } else if (node instanceof Leaf) {
        serialize((Leaf) node, jsonGenerator, serializerProvider);
    } else {/*from   ww  w .j av a  2 s  . c  om*/
        throw new IllegalArgumentException("Unsupported node: " + node);
    }

    jsonGenerator.writeEndObject();
}

From source file:net.logstash.logback.marker.ObjectFieldsAppendingMarkerTest.java

@Test
public void testWriteTo() throws IOException {

    MyClass myObject = new MyClass("value");

    StringWriter writer = new StringWriter();
    JsonGenerator generator = FACTORY.createGenerator(writer);

    LogstashMarker marker = Markers.appendFields(myObject);
    generator.writeStartObject();
    marker.writeTo(generator);/*w w w.ja  va 2s. c  om*/
    generator.writeEndObject();
    generator.flush();

    assertThat(writer.toString()).isEqualTo("{\"myField\":\"value\"}");
}