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

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

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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:com.strategicgains.hyperexpress.serialization.jackson.HalResourceSerializer.java

private void writeLinks(HalResource resource, boolean isEmbedded, JsonGenerator jgen)
        throws JsonGenerationException, IOException {
    List<Link> links = resource.getLinks();
    List<Namespace> namespaces = resource.getNamespaces();
    if (links.isEmpty() && (isEmbedded || namespaces.isEmpty()))
        return;//from ww  w  .jav a 2s.  com

    jgen.writeObjectFieldStart(LINKS);
    writeCuries(namespaces, isEmbedded, jgen);

    Map<String, List<HalLink>> linksByRel = indexLinksByRel(resource.getLinks());

    for (Entry<String, List<HalLink>> entry : linksByRel.entrySet()) {
        if (entry.getValue().size() == 1 && !resource.isMultipleLinks(entry.getKey())) // Write single link
        {
            HalLink link = entry.getValue().iterator().next();

            if (null == link.getTemplated()) {
                link.setTemplated(link.hasTemplate() ? true : null);
            }

            jgen.writeObjectField(entry.getKey(), link);
        } else // Write link array
        {
            jgen.writeArrayFieldStart(entry.getKey());

            for (HalLink link : entry.getValue()) {
                if (null == link.getTemplated()) {
                    link.setTemplated(link.hasTemplate() ? true : null);
                }

                jgen.writeObject(link);
            }

            jgen.writeEndArray();
        }

    }

    jgen.writeEndObject();
}

From source file:org.numenta.nupic.algorithms.CLAClassifierSerializer.java

@Override
public void serialize(CLAClassifier cla, JsonGenerator jgen, SerializerProvider arg2)
        throws IOException, JsonProcessingException {

    jgen.writeStartObject();//from  w  ww  . j  av a  2  s.co  m
    jgen.writeNumberField("alpha", cla.alpha);
    jgen.writeNumberField("actValueAlpha", cla.actValueAlpha);
    jgen.writeNumberField("learnIteration", cla.learnIteration);
    jgen.writeNumberField("recordNumMinusLearnIteration", cla.recordNumMinusLearnIteration);
    jgen.writeNumberField("maxBucketIdx", cla.maxBucketIdx);

    StringBuilder sb = new StringBuilder();
    for (int i : cla.steps.toArray()) {
        sb.append(i).append(",");
    }
    sb.setLength(sb.length() - 1);
    jgen.writeStringField("steps", sb.toString());

    sb = new StringBuilder();
    for (Tuple t : cla.patternNZHistory) {
        sb.append(t.get(0)).append("-").append(Arrays.toString((int[]) t.get(1))).append(";");
    }
    sb.setLength(sb.length() - 1);
    jgen.writeStringField("patternNZHistory", sb.toString());

    sb = new StringBuilder();
    for (Tuple t : cla.activeBitHistory.keySet()) {
        sb.append(t.get(0)).append(",").append(t.get(1)).append("-");
        BitHistory bh = cla.activeBitHistory.get(t);
        sb.append(bh.id).append("=").append(bh.stats).append("=").append(bh.lastTotalUpdate).append(";");
    }
    sb.setLength(sb.length() - 1);
    jgen.writeStringField("activeBitHistory", sb.toString());

    jgen.writeArrayFieldStart("actualValues");
    for (Object o : cla.actualValues) {
        jgen.writeObject(o);
    }
    jgen.writeEndArray();
    jgen.writeEndObject();

}

From source file:com.castlemock.web.mock.rest.converter.swagger.SwaggerRestDefinitionConverter.java

/**
 * The method generates a response body based on a given name, {@link Property} and a map of {@link Model}.
 * @param name The name of the property.
 * @param property The property that will be part of the response.
 * @param definitions The map of definitions will be used when composing the response body.
 * @param generator The {@link JsonGenerator}.
 * @throws IOException/*from  w w w  . ja v a  2  s  .  com*/
 * @since 1.13
 * @see {@link #generateJsonBody(Response, Map)}
 */
private void generateJsonBody(final String name, final Property property, final Map<String, Model> definitions,
        final JsonGenerator generator) throws IOException {

    if (name != null) {
        generator.writeFieldName(name);
    }

    if (property instanceof RefProperty) {
        final RefProperty refProperty = (RefProperty) property;
        final String simpleRef = refProperty.getSimpleRef();
        final Model model = definitions.get(simpleRef);

        if (model == null) {
            LOGGER.warn("Unable to find the following definition in the Swagger file: " + simpleRef);
            return;
        }
        generateJsonBody(model, definitions, generator);
    } else if (property instanceof ArrayProperty) {
        final ArrayProperty arrayProperty = (ArrayProperty) property;
        final Property item = arrayProperty.getItems();
        final int maxItems = getMaxItems(arrayProperty.getMaxItems());
        generator.writeStartArray();

        for (int index = 0; index < maxItems; index++) {
            generateJsonBody(item.getName(), item, definitions, generator);
        }
        generator.writeEndArray();
    } else {
        String expression = getExpressionIdentifier(property);

        if (expression != null) {
            generator.writeObject(expression);
        } else {
            // Unsupported type. Need to write something otherwise
            // we might have a serialization problem.
            generator.writeObject("");
        }
    }
}

From source file:org.apache.olingo.commons.core.data.JSONEntrySerializer.java

@Override
protected void doSerialize(final JSONEntryImpl entry, final JsonGenerator jgen,
        final SerializerProvider provider) throws IOException, JsonProcessingException {

    jgen.writeStartObject();/*from   w w w .  j ava  2  s  .  c o m*/

    if (entry.getMetadata() != null) {
        jgen.writeStringField(Constants.JSON_METADATA, entry.getMetadata().toASCIIString());
    }
    if (entry.getId() != null) {
        jgen.writeStringField(Constants.JSON_ID, entry.getId());
    }

    final Map<String, List<String>> entitySetLinks = new HashMap<String, List<String>>();

    for (Link link : entry.getNavigationLinks()) {
        ODataLinkType type = null;
        try {
            type = ODataLinkType.fromString(version, link.getRel(), link.getType());
        } catch (IllegalArgumentException e) {
            // ignore   
        }

        if (type == ODataLinkType.ENTITY_SET_NAVIGATION) {
            final List<String> uris;
            if (entitySetLinks.containsKey(link.getTitle())) {
                uris = entitySetLinks.get(link.getTitle());
            } else {
                uris = new ArrayList<String>();
                entitySetLinks.put(link.getTitle(), uris);
            }
            uris.add(link.getHref());
        } else {
            if (StringUtils.isNotBlank(link.getHref())) {
                jgen.writeStringField(link.getTitle() + Constants.JSON_BIND_LINK_SUFFIX, link.getHref());
            }
        }

        if (link.getInlineEntry() != null) {
            jgen.writeObjectField(link.getTitle(), link.getInlineEntry());
        } else if (link.getInlineFeed() != null) {
            jgen.writeArrayFieldStart(link.getTitle());
            for (Entry subEntry : link.getInlineFeed().getEntries()) {
                jgen.writeObject(subEntry);
            }
            jgen.writeEndArray();
        }
    }
    for (Map.Entry<String, List<String>> entitySetLink : entitySetLinks.entrySet()) {
        jgen.writeArrayFieldStart(entitySetLink.getKey() + Constants.JSON_BIND_LINK_SUFFIX);
        for (String uri : entitySetLink.getValue()) {
            jgen.writeString(uri);
        }
        jgen.writeEndArray();
    }

    for (Link link : entry.getMediaEditLinks()) {
        if (link.getTitle() == null) {
            jgen.writeStringField(Constants.JSON_MEDIAEDIT_LINK, link.getHref());
        }

        if (link.getInlineEntry() != null) {
            jgen.writeObjectField(link.getTitle(), link.getInlineEntry());
        }
        if (link.getInlineFeed() != null) {
            jgen.writeArrayFieldStart(link.getTitle());
            for (Entry subEntry : link.getInlineFeed().getEntries()) {
                jgen.writeObject(subEntry);
            }
            jgen.writeEndArray();
        }
    }

    for (Property property : entry.getProperties()) {
        property(jgen, property, property.getName());
    }

    jgen.writeEndObject();
}

From source file:ch.ralscha.extdirectspring.util.MapActionSerializer.java

@Override
public void serialize(Map<String, List<Action>> value, JsonGenerator jgen, SerializerProvider provider)
        throws IOException {
    if (null != value) {
        jgen.writeStartObject();/*from w w  w  .  j  a  v a2  s.  co  m*/
        for (Entry<String, List<Action>> entry : value.entrySet()) {
            String key = entry.getKey();
            jgen.writeArrayFieldStart(key);
            List<Action> actions = entry.getValue();
            for (Action action : actions) {
                // PrettyPrinter is not set the generator is on one line
                // mode
                if (jgen.getPrettyPrinter() != null && action instanceof ActionDoc) {// insertion
                    // of
                    // doc
                    // here
                    ActionDoc actionDoc = (ActionDoc) action;
                    jgen.writeRaw("\n\t/**");
                    if (actionDoc.isDeprecated()) {
                        jgen.writeRaw("\n\t* @deprecated");
                    }
                    jgen.writeRaw("\n\t* " + actionDoc.getName() + ": " + actionDoc.getMethodComment());
                    jgen.writeRaw("\n\t* @author: " + actionDoc.getAuthor());
                    jgen.writeRaw("\n\t* @version: " + actionDoc.getVersion());
                    jgen.writeRaw("\n\t*");
                    for (Entry<String, String> entry2 : actionDoc.getParameters().entrySet()) {
                        jgen.writeRaw("\n\t* @param: [" + entry2.getKey() + "] " + entry2.getValue());
                    }
                    jgen.writeRaw("\n\t* @return");
                    for (Entry<String, String> entry2 : actionDoc.getReturnMethod().entrySet()) {
                        jgen.writeRaw("\n\t*\t [" + entry2.getKey() + "] " + entry2.getValue());
                    }
                    jgen.writeRaw("\n\t*/\n");
                }
                jgen.writeObject(action);
            }
            jgen.writeEndArray();
        }
        jgen.writeEndObject();
    }
}

From source file:org.apache.airavata.db.AbstractThriftSerializer.java

@Override
public void serialize(final T value, final JsonGenerator jgen, final SerializerProvider provider)
        throws IOException {
    jgen.writeStartObject();/*from w  w  w  .  j a  v  a  2  s.  c om*/
    for (final E field : getFieldValues()) {
        if (value.isSet(field)) {
            final Object fieldValue = value.getFieldValue(field);
            if (fieldValue != null) {
                log.debug("Adding field {} to the JSON string...",
                        CaseFormat.UPPER_CAMEL.to(CaseFormat.LOWER_CAMEL, field.getFieldName()));

                jgen.writeFieldName(CaseFormat.UPPER_CAMEL.to(CaseFormat.LOWER_CAMEL, field.getFieldName()));
                if (fieldValue instanceof Short) {
                    jgen.writeNumber((Short) fieldValue);
                } else if (fieldValue instanceof Integer) {
                    jgen.writeNumber((Integer) fieldValue);
                } else if (fieldValue instanceof Long) {
                    jgen.writeNumber((Long) fieldValue);
                } else if (fieldValue instanceof Double) {
                    jgen.writeNumber((Double) fieldValue);
                } else if (fieldValue instanceof Float) {
                    jgen.writeNumber((Float) fieldValue);
                } else if (fieldValue instanceof Boolean) {
                    jgen.writeBoolean((Boolean) fieldValue);
                } else if (fieldValue instanceof String) {
                    jgen.writeString(fieldValue.toString());
                } else if (fieldValue instanceof Collection) {
                    log.debug("Array opened for field {}.",
                            CaseFormat.UPPER_CAMEL.to(CaseFormat.LOWER_CAMEL, field.getFieldName()));
                    jgen.writeStartArray();
                    for (final Object arrayObject : (Collection<?>) fieldValue) {
                        jgen.writeObject(arrayObject);
                    }
                    jgen.writeEndArray();
                    log.debug("Array closed for field {}.",
                            CaseFormat.UPPER_CAMEL.to(CaseFormat.LOWER_CAMEL, field.getFieldName()));
                } else {
                    jgen.writeObject(fieldValue);
                }
            } else {
                log.debug("Skipping converting field {} to JSON:  value is null!",
                        CaseFormat.UPPER_CAMEL.to(CaseFormat.LOWER_CAMEL, field.getFieldName()));
            }
        } else {
            log.debug("Skipping converting field {} to JSON:  field has not been set!",
                    CaseFormat.UPPER_CAMEL.to(CaseFormat.LOWER_CAMEL, field.getFieldName()));
        }
    }
    jgen.writeEndObject();
}

From source file:org.apache.olingo.client.core.serialization.JsonEntitySerializer.java

protected void doContainerSerialize(final ResWrap<Entity> container, final JsonGenerator jgen)
        throws IOException, EdmPrimitiveTypeException {

    final Entity entity = container.getPayload();

    jgen.writeStartObject();//w w w. ja va2 s. c  om

    if (serverMode) {
        if (container.getContextURL() != null) {
            jgen.writeStringField(Constants.JSON_CONTEXT, container.getContextURL().toASCIIString());
        }
        if (StringUtils.isNotBlank(container.getMetadataETag())) {
            jgen.writeStringField(Constants.JSON_METADATA_ETAG, container.getMetadataETag());
        }

        if (StringUtils.isNotBlank(entity.getETag())) {
            jgen.writeStringField(Constants.JSON_ETAG, entity.getETag());
        }
    }

    if (StringUtils.isNotBlank(entity.getType()) && !isODataMetadataNone(contentType)) {
        jgen.writeStringField(Constants.JSON_TYPE,
                new EdmTypeInfo.Builder().setTypeExpression(entity.getType()).build().external());
    }

    if (entity.getId() != null && !isODataMetadataNone(contentType)) {
        jgen.writeStringField(Constants.JSON_ID, entity.getId().toASCIIString());
    }

    for (Annotation annotation : entity.getAnnotations()) {
        valuable(jgen, annotation, "@" + annotation.getTerm());
    }

    for (Property property : entity.getProperties()) {
        valuable(jgen, property, property.getName());
    }

    if (serverMode && entity.getEditLink() != null && StringUtils.isNotBlank(entity.getEditLink().getHref())) {
        jgen.writeStringField(Constants.JSON_EDIT_LINK, entity.getEditLink().getHref());

        if (entity.isMediaEntity()) {
            jgen.writeStringField(Constants.JSON_MEDIA_READ_LINK, entity.getEditLink().getHref() + "/$value");
        }
    }

    if (!isODataMetadataNone(contentType)) {
        links(entity, jgen);
    }

    for (Link link : entity.getMediaEditLinks()) {
        if (link.getTitle() == null) {
            jgen.writeStringField(Constants.JSON_MEDIA_EDIT_LINK, link.getHref());
        }

        if (link.getInlineEntity() != null) {
            jgen.writeObjectField(link.getTitle(), link.getInlineEntity());
        }
        if (link.getInlineEntitySet() != null) {
            jgen.writeArrayFieldStart(link.getTitle());
            for (Entity subEntry : link.getInlineEntitySet().getEntities()) {
                jgen.writeObject(subEntry);
            }
            jgen.writeEndArray();
        }
    }

    if (serverMode) {
        for (Operation operation : entity.getOperations()) {
            jgen.writeObjectFieldStart(
                    "#" + StringUtils.substringAfterLast(operation.getMetadataAnchor(), "#"));
            jgen.writeStringField(Constants.ATTR_TITLE, operation.getTitle());
            jgen.writeStringField(Constants.ATTR_TARGET, operation.getTarget().toASCIIString());
            jgen.writeEndObject();
        }
    }

    jgen.writeEndObject();
}

From source file:net.opentsdb.tsd.HttpSampleSerializer.java

/**
 * Format the results from a timeseries data query
 * @param data_query The TSQuery object used to fetch the results
 * @param results The data fetched from storage
 * @param globals An optional list of global annotation objects
 * @return A ChannelBuffer object to pass on to the caller
 *//*  w  w  w .jav  a 2  s  . c  o  m*/
public ChannelBuffer formatQueryV1(final TSQuery data_query, final List<DataPoints[]> results,
        final List<Annotation> globals) {

    final boolean as_arrays = this.query.hasQueryStringParam("arrays");
    final String jsonp = this.query.getQueryStringParam("jsonp");

    // todo - this should be streamed at some point since it could be HUGE
    final ChannelBuffer response = ChannelBuffers.dynamicBuffer();
    final OutputStream output = new ChannelBufferOutputStream(response);
    try {
        // don't forget jsonp
        if (jsonp != null && !jsonp.isEmpty()) {
            output.write((jsonp + "(").getBytes(query.getCharset()));
        }
        JsonGenerator json = JSON.getFactory().createGenerator(output);
        json.writeStartArray();

        for (DataPoints[] separate_dps : results) {
            for (DataPoints dps : separate_dps) {
                json.writeStartObject();

                json.writeStringField("metric", dps.metricName());

                json.writeFieldName("tags");
                json.writeStartObject();
                if (dps.getTags() != null) {
                    for (Map.Entry<String, String> tag : dps.getTags().entrySet()) {
                        json.writeStringField(tag.getKey(), tag.getValue());
                    }
                }
                json.writeEndObject();

                json.writeFieldName("aggregateTags");
                json.writeStartArray();
                if (dps.getAggregatedTags() != null) {
                    for (String atag : dps.getAggregatedTags()) {
                        json.writeString(atag);
                    }
                }
                json.writeEndArray();

                if (data_query.getShowTSUIDs()) {
                    json.writeFieldName("tsuids");
                    json.writeStartArray();
                    final List<String> tsuids = dps.getTSUIDs();
                    Collections.sort(tsuids);
                    for (String tsuid : tsuids) {
                        json.writeString(tsuid);
                    }
                    json.writeEndArray();
                }

                if (!data_query.getNoAnnotations()) {
                    final List<Annotation> annotations = dps.getAnnotations();
                    if (annotations != null) {
                        Collections.sort(annotations);
                        json.writeArrayFieldStart("annotations");
                        for (Annotation note : annotations) {
                            json.writeObject(note);
                        }
                        json.writeEndArray();
                    }

                    if (globals != null && !globals.isEmpty()) {
                        Collections.sort(globals);
                        json.writeArrayFieldStart("globalAnnotations");
                        for (Annotation note : globals) {
                            json.writeObject(note);
                        }
                        json.writeEndArray();
                    }
                }

                // now the fun stuff, dump the data
                json.writeFieldName("dps");

                // default is to write a map, otherwise write arrays
                if (as_arrays) {
                    json.writeStartArray();
                    for (final DataPoint dp : dps) {
                        if (dp.timestamp() < data_query.startTime() || dp.timestamp() > data_query.endTime()) {
                            continue;
                        }
                        final long timestamp = data_query.getMsResolution() ? dp.timestamp()
                                : dp.timestamp() / 1000;
                        json.writeStartArray();
                        json.writeNumber(timestamp);
                        json.writeNumber(dp.isInteger() ? dp.longValue() : dp.doubleValue());
                        json.writeEndArray();
                    }
                    json.writeEndArray();
                } else {
                    json.writeStartObject();
                    for (final DataPoint dp : dps) {
                        if (dp.timestamp() < (data_query.startTime())
                                || dp.timestamp() > (data_query.endTime())) {
                            continue;
                        }
                        final long timestamp = data_query.getMsResolution() ? dp.timestamp()
                                : dp.timestamp() / 1000;
                        json.writeNumberField(Long.toString(timestamp),
                                dp.isInteger() ? dp.longValue() : dp.doubleValue());
                    }
                    json.writeEndObject();
                }

                // close the results for this particular query
                json.writeEndObject();
            }
        }

        // close
        json.writeEndArray();
        json.close();

        if (jsonp != null && !jsonp.isEmpty()) {
            output.write(")".getBytes());
        }
        return response;
    } catch (IOException e) {
        LOG.error("Unexpected exception", e);
        throw new RuntimeException(e);
    }
}

From source file:net.opentsdb.tsd.HttpJsonSerializer.java

/**
 * Format the results from a timeseries data query
 * @param data_query The TSQuery object used to fetch the results
 * @param results The data fetched from storage
 * @param globals An optional list of global annotation objects
 * @return A ChannelBuffer object to pass on to the caller
 *///from   www. j a v  a 2  s .  c o  m
public ChannelBuffer formatQueryV1(final TSQuery data_query, final List<DataPoints[]> results,
        final List<Annotation> globals) {

    final boolean as_arrays = this.query.hasQueryStringParam("arrays");
    final String jsonp = this.query.getQueryStringParam("jsonp");

    // todo - this should be streamed at some point since it could be HUGE
    final ChannelBuffer response = ChannelBuffers.dynamicBuffer();
    final OutputStream output = new ChannelBufferOutputStream(response);
    try {
        // don't forget jsonp
        if (jsonp != null && !jsonp.isEmpty()) {
            output.write((jsonp + "(").getBytes(query.getCharset()));
        }
        JsonGenerator json = JSON.getFactory().createGenerator(output);
        json.writeStartArray();

        for (DataPoints[] separate_dps : results) {
            for (DataPoints dps : separate_dps) {
                json.writeStartObject();

                json.writeStringField("metric", dps.metricName());

                json.writeFieldName("tags");
                json.writeStartObject();
                if (dps.getTags() != null) {
                    for (Map.Entry<String, String> tag : dps.getTags().entrySet()) {
                        json.writeStringField(tag.getKey(), tag.getValue());
                    }
                }
                json.writeEndObject();

                json.writeFieldName("aggregateTags");
                json.writeStartArray();
                if (dps.getAggregatedTags() != null) {
                    for (String atag : dps.getAggregatedTags()) {
                        json.writeString(atag);
                    }
                }
                json.writeEndArray();

                if (data_query.getShowTSUIDs()) {
                    json.writeFieldName("tsuids");
                    json.writeStartArray();
                    final List<String> tsuids = dps.getTSUIDs();
                    Collections.sort(tsuids);
                    for (String tsuid : tsuids) {
                        json.writeString(tsuid);
                    }
                    json.writeEndArray();
                }

                if (!data_query.getNoAnnotations()) {
                    final List<Annotation> annotations = dps.getAnnotations();
                    if (annotations != null) {
                        Collections.sort(annotations);
                        json.writeArrayFieldStart("annotations");
                        for (Annotation note : annotations) {
                            json.writeObject(note);
                        }
                        json.writeEndArray();
                    }

                    if (globals != null && !globals.isEmpty()) {
                        Collections.sort(globals);
                        json.writeArrayFieldStart("globalAnnotations");
                        for (Annotation note : globals) {
                            json.writeObject(note);
                        }
                        json.writeEndArray();
                    }
                }

                // now the fun stuff, dump the data
                json.writeFieldName("dps");

                // default is to write a map, otherwise write arrays
                if (as_arrays) {
                    json.writeStartArray();
                    for (final DataPoint dp : dps) {
                        if (dp.timestamp() < data_query.startTime() || dp.timestamp() > data_query.endTime()) {
                            continue;
                        }
                        final long timestamp = data_query.getMsResolution() ? dp.timestamp()
                                : dp.timestamp() / 1000;
                        json.writeStartArray();
                        json.writeNumber(timestamp);
                        if (dp.isInteger()) {
                            json.writeNumber(dp.longValue());
                        } else {
                            json.writeNumber(dp.doubleValue());
                        }
                        json.writeEndArray();
                    }
                    json.writeEndArray();
                } else {
                    json.writeStartObject();
                    for (final DataPoint dp : dps) {
                        if (dp.timestamp() < (data_query.startTime())
                                || dp.timestamp() > (data_query.endTime())) {
                            continue;
                        }
                        final long timestamp = data_query.getMsResolution() ? dp.timestamp()
                                : dp.timestamp() / 1000;
                        if (dp.isInteger()) {
                            json.writeNumberField(Long.toString(timestamp), dp.longValue());
                        } else {
                            json.writeNumberField(Long.toString(timestamp), dp.doubleValue());
                        }
                    }
                    json.writeEndObject();
                }

                // close the results for this particular query
                json.writeEndObject();
            }
        }

        // close
        json.writeEndArray();
        json.close();

        if (jsonp != null && !jsonp.isEmpty()) {
            output.write(")".getBytes());
        }
        return response;
    } catch (IOException e) {
        LOG.error("Unexpected exception", e);
        throw new RuntimeException(e);
    }
}

From source file:org.apache.olingo.commons.core.serialization.JsonEntitySerializer.java

protected void doContainerSerialize(final ResWrap<Entity> container, final JsonGenerator jgen)
        throws IOException, EdmPrimitiveTypeException {

    final Entity entity = container.getPayload();

    jgen.writeStartObject();//from  w w  w.  ja v  a2 s  .com

    if (serverMode) {
        if (container.getContextURL() != null) {
            jgen.writeStringField(version.compareTo(ODataServiceVersion.V40) >= 0 ? Constants.JSON_CONTEXT
                    : Constants.JSON_METADATA, container.getContextURL().toASCIIString());
        }
        if (version.compareTo(ODataServiceVersion.V40) >= 0
                && StringUtils.isNotBlank(container.getMetadataETag())) {
            jgen.writeStringField(Constants.JSON_METADATA_ETAG, container.getMetadataETag());
        }

        if (StringUtils.isNotBlank(entity.getETag())) {
            jgen.writeStringField(version.getJsonName(ODataServiceVersion.JsonKey.ETAG), entity.getETag());
        }
    }

    if (StringUtils.isNotBlank(entity.getType())) {
        jgen.writeStringField(version.getJsonName(ODataServiceVersion.JsonKey.TYPE),
                new EdmTypeInfo.Builder().setTypeExpression(entity.getType()).build().external(version));
    }

    if (entity.getId() != null) {
        jgen.writeStringField(version.getJsonName(ODataServiceVersion.JsonKey.ID),
                entity.getId().toASCIIString());
    }

    for (Annotation annotation : entity.getAnnotations()) {
        valuable(jgen, annotation, "@" + annotation.getTerm());
    }

    for (Property property : entity.getProperties()) {
        valuable(jgen, property, property.getName());
    }

    if (serverMode && entity.getEditLink() != null && StringUtils.isNotBlank(entity.getEditLink().getHref())) {
        jgen.writeStringField(version.getJsonName(ODataServiceVersion.JsonKey.EDIT_LINK),
                entity.getEditLink().getHref());

        if (entity.isMediaEntity()) {
            jgen.writeStringField(version.getJsonName(ODataServiceVersion.JsonKey.MEDIA_READ_LINK),
                    entity.getEditLink().getHref() + "/$value");
        }
    }

    links(entity, jgen);

    for (Link link : entity.getMediaEditLinks()) {
        if (link.getTitle() == null) {
            jgen.writeStringField(version.getJsonName(ODataServiceVersion.JsonKey.MEDIA_EDIT_LINK),
                    link.getHref());
        }

        if (link.getInlineEntity() != null) {
            jgen.writeObjectField(link.getTitle(), link.getInlineEntity());
        }
        if (link.getInlineEntitySet() != null) {
            jgen.writeArrayFieldStart(link.getTitle());
            for (Entity subEntry : link.getInlineEntitySet().getEntities()) {
                jgen.writeObject(subEntry);
            }
            jgen.writeEndArray();
        }
    }

    if (serverMode) {
        for (ODataOperation operation : entity.getOperations()) {
            jgen.writeObjectFieldStart(
                    "#" + StringUtils.substringAfterLast(operation.getMetadataAnchor(), "#"));
            jgen.writeStringField(Constants.ATTR_TITLE, operation.getTitle());
            jgen.writeStringField(Constants.ATTR_TARGET, operation.getTarget().toASCIIString());
            jgen.writeEndObject();
        }
    }

    jgen.writeEndObject();
}