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

Introduction

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

Prototype

public abstract void writeFieldName(SerializableString name) throws IOException, JsonGenerationException;

Source Link

Document

Method similar to #writeFieldName(String) , main difference being that it may perform better as some of processing (such as quoting of certain characters, or encoding into external encoding if supported by generator) can be done just once and reused for later calls.

Usage

From source file:com.cedarsoft.couchdb.io.RowSerializer.java

public <K, V, D> void serialize(@Nonnull Row<K, V, D> row, @Nonnull JacksonSerializer<? super K> keySerializer,
        @Nonnull JacksonSerializer<? super V> valueSerializer,
        @Nullable JacksonSerializer<? super D> documentSerializer, @Nonnull JsonGenerator generator)
        throws IOException {
    generator.writeStartObject();/*from  w w  w  .java  2 s.co  m*/

    @Nullable
    DocId id = row.getId();
    if (id != null) {
        generator.writeStringField(PROPERTY_ID, id.asString());
    }

    //The key
    generator.writeFieldName(PROPERTY_KEY);
    keySerializer.serialize(row.getKey(), generator);

    //The Value
    generator.writeFieldName(PROPERTY_VALUE);
    V value = row.getValue();
    if (value == null) {
        generator.writeNull();
    } else {
        valueSerializer.serialize(value, generator);
    }

    //The doc
    CouchDoc<? extends D> doc = row.getDoc();
    if (doc != null) {
        if (documentSerializer == null) {
            throw new NullPointerException("documentSerializer must not be null when serializing a doc");
        }

        generator.writeFieldName("doc");
        couchDocSerializer.serialize(doc, documentSerializer, generator);
    }

    generator.writeEndObject();
}

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From source file:com.bluelinelabs.logansquare.typeconverters.IntentConverter.java

@Override
public void serialize(Intent intent, String fieldName, boolean writeFieldNameForObject,
        JsonGenerator jsonGenerator) throws IOException {
    android.util.Log.d("json2notification", "IntentConverter:serialize");
    if (intent == null) {
        android.util.Log.d("json2notification", "intent: null");
        return;//from w w w  .j a v a 2s . c  om
    }
    SimpleIntent simpleIntent = new SimpleIntent();
    simpleIntent.uri = intent.getData();
    simpleIntent.action = intent.getAction();
    if (writeFieldNameForObject)
        jsonGenerator.writeFieldName(fieldName);
    SimpleIntent$$JsonObjectMapper._serialize((SimpleIntent) simpleIntent, jsonGenerator, true);
}

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From source file:net.solarnetwork.web.support.JSONView.java

private void generateJavaBeanObject(JsonGenerator json, String key, Object bean,
        PropertyEditorRegistrar registrar) throws JsonGenerationException, IOException {
    if (key != null) {
        json.writeFieldName(key);
    }/* w ww  .  ja v a2 s .  co m*/
    if (bean == null) {
        json.writeNull();
        return;
    }
    BeanWrapper wrapper = getPropertyAccessor(bean, registrar);
    PropertyDescriptor[] props = wrapper.getPropertyDescriptors();
    json.writeStartObject();
    for (PropertyDescriptor prop : props) {
        String name = prop.getName();
        if (this.getJavaBeanIgnoreProperties() != null && this.getJavaBeanIgnoreProperties().contains(name)) {
            continue;
        }
        if (wrapper.isReadableProperty(name)) {
            Object propVal = wrapper.getPropertyValue(name);
            if (propVal != null) {

                // test for SerializeIgnore
                Method getter = prop.getReadMethod();
                if (getter != null && getter.isAnnotationPresent(SerializeIgnore.class)) {
                    continue;
                }

                if (getPropertySerializerRegistrar() != null) {
                    propVal = getPropertySerializerRegistrar().serializeProperty(name, propVal.getClass(), bean,
                            propVal);
                } else {
                    // Spring does not apply PropertyEditors on read methods, so manually handle
                    PropertyEditor editor = wrapper.findCustomEditor(null, name);
                    if (editor != null) {
                        editor.setValue(propVal);
                        propVal = editor.getAsText();
                    }
                }
                if (propVal instanceof Enum<?> || getJavaBeanTreatAsStringValues() != null
                        && getJavaBeanTreatAsStringValues().contains(propVal.getClass())) {
                    propVal = propVal.toString();
                }
                writeJsonValue(json, name, propVal, registrar);
            }
        }
    }
    json.writeEndObject();
}

---

From source file:org.neo4j.ontology.server.unmanaged.AnnotationResource.java

@GET
@Produces(MediaType.APPLICATION_JSON)/* w w  w . j  a v a 2 s  .  c o m*/
@Path("/{userName}")
public Response getAnnotationSets(final @PathParam("userName") String userName,
        final @DefaultValue("0") @QueryParam("objectification") int objectification) {
    StreamingOutput stream = new StreamingOutput() {
        @Override
        public void write(OutputStream os) throws IOException, WebApplicationException {
            Map<Long, List<Long>> associatedDataSets = new HashMap<>();
            Label annotationLabel = DynamicLabel.label("AnnotationSets" + capitalize(userName));

            JsonGenerator jg = objectMapper.getFactory().createGenerator(os, JsonEncoding.UTF8);
            jg.writeStartObject();
            jg.writeFieldName("nodes");

            if (objectification > 0) {
                jg.writeStartObject();
            } else {
                jg.writeStartArray();
            }

            try (Transaction tx = graphDb.beginTx();
                    ResourceIterator<Node> users = graphDb.findNodes(USER, "name", userName)) {
                if (users.hasNext()) {
                    getDirectAnnotationTerms(getAccessibleDataSets(users.next()), associatedDataSets);
                }
                tx.success();
            }

            try (Transaction tx = graphDb.beginTx();
                    ResourceIterator<Node> terms = graphDb.findNodes(annotationLabel)) {
                while (terms.hasNext()) {
                    Node term = terms.next();
                    if (objectification > 0) {
                        jg.writeFieldName(term.getProperty("uri").toString());
                    }
                    if (objectification > 1) {
                        if (associatedDataSets.containsKey(term.getId())) {
                            writeJsonNodeObjectifiedObject(jg, term, annotationLabel,
                                    associatedDataSets.get(term.getId()));
                        } else {
                            writeJsonNodeObjectifiedObject(jg, term, annotationLabel);
                        }
                    } else {
                        if (associatedDataSets.containsKey(term.getId())) {
                            writeJsonNodeObject(jg, term, annotationLabel,
                                    associatedDataSets.get(term.getId()));
                        } else {
                            writeJsonNodeObject(jg, term, annotationLabel);
                        }
                    }
                }
                tx.success();
            }

            if (objectification > 0) {
                jg.writeEndObject();
            } else {
                jg.writeEndArray();
            }
            jg.writeEndObject();
            jg.flush();
            jg.close();
        }
    };

    return Response.ok().entity(stream).type(MediaType.APPLICATION_JSON).build();
}

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From source file:org.springframework.data.couchbase.core.convert.translation.JacksonTranslationService.java

/**
 * Recursively iterates through the sources and adds it to the JSON generator.
 *
 * @param source the source document//from w  w w. j a  va  2 s .  c  o m
 * @param generator the JSON generator.
 *
 * @throws IOException
 */
private void encodeRecursive(final CouchbaseStorable source, final JsonGenerator generator) throws IOException {
    generator.writeStartObject();

    for (Map.Entry<String, Object> entry : ((CouchbaseDocument) source).export().entrySet()) {
        String key = entry.getKey();
        Object value = entry.getValue();
        generator.writeFieldName(key);
        if (value instanceof CouchbaseDocument) {
            encodeRecursive((CouchbaseDocument) value, generator);
            continue;
        }

        final Class<?> clazz = value.getClass();

        if (simpleTypeHolder.isSimpleType(clazz) && !isEnumOrClass(clazz)) {
            generator.writeObject(value);
        } else {
            objectMapper.writeValue(generator, value);
        }

    }

    generator.writeEndObject();
}

---

From source file:TDS.Shared.Messages.MessageJson.java

public String create() throws ReturnStatusException {
    StringWriter sw = new StringWriter();
    JsonFactory jsonFactory = new JsonFactory();
    JsonGenerator jsonWriter;

    try {//  w ww.  jav  a2 s  . c o  m
        if (_messageSystem == null)
            return "{}";

        jsonWriter = jsonFactory.createGenerator(sw);
        jsonWriter.writeStartObject();

        jsonWriter.writeStringField("c_l", _language); // "c_l": _language
        jsonWriter.writeFieldName("c_a"); // "c_a" :
        jsonWriter.writeStartArray(); // [

        // get all the message contexts across all the context types
        List<MessageContext> messageContexts = new ArrayList<MessageContext>();
        for (MessageContextType contextType : _messageSystem.getContextTypes()) {
            messageContexts.addAll(contextType.getContexts());
        }

        for (MessageContext messageContext : messageContexts) {
            writeContextElement(messageContext, jsonWriter);
        }

        jsonWriter.writeEndArray(); // ]
        jsonWriter.writeEndObject(); // }

        jsonWriter.close();
        sw.close();
    } catch (IOException e) {
        ReturnStatus rs = new ReturnStatus("failed", "Serialization failed: " + e.getMessage());
        throw new ReturnStatusException(rs);
    }

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

---

From source file:com.cedarsoft.serialization.jackson.AbstractJacksonSerializer.java

public <T> void serialize(@Nullable T object, @Nonnull Class<T> type, @Nonnull String propertyName,
        @Nonnull JsonGenerator serializeTo, @Nonnull Version formatVersion)
        throws JsonProcessingException, IOException {
    serializeTo.writeFieldName(propertyName);

    //Fast exit if the value is null
    if (object == null) {
        serializeTo.writeNull();//  w  w w .  j a v a  2  s .co  m
        return;
    }

    JacksonSerializer<? super T> serializer = getSerializer(type);
    Version delegateVersion = delegatesMappings.getVersionMappings().resolveVersion(type, formatVersion);
    if (serializer.isObjectType()) {
        serializeTo.writeStartObject();
    }

    serializer.serialize(serializeTo, object, delegateVersion);

    if (serializer.isObjectType()) {
        serializeTo.writeEndObject();
    }
}

---

From source file:ratpack.codahale.metrics.internal.WebSocketReporter.java

@SuppressWarnings("rawtypes")
private void writeGauges(JsonGenerator json, SortedMap<String, Gauge> gauges) throws IOException {
    json.writeArrayFieldStart("gauges");
    for (Map.Entry<String, Gauge> entry : gauges.entrySet()) {
        Gauge gauge = entry.getValue();/*w w w. j  a v  a 2s.c o m*/

        json.writeStartObject();
        json.writeStringField("name", entry.getKey());
        try {
            json.writeFieldName("value");
            json.writeObject(gauge.getValue());
        } catch (Exception e) {
            LOGGER.log(Level.FINE, "Exception encountered while reporting [" + entry.getKey() + "]: "
                    + e.getLocalizedMessage());
            json.writeNull();
        }
        json.writeEndObject();

    }
    json.writeEndArray();
}

---

From source file:de.fraunhofer.iosb.ilt.sta.serialize.EntitySetResultSerializer.java

@Override
public void serialize(EntitySetResult value, JsonGenerator gen, SerializerProvider serializers)
        throws IOException, JsonProcessingException {
    gen.writeStartObject();//from   w  ww. j  a  v  a2s .co m
    long count = value.getValues().getCount();
    if (count >= 0) {
        gen.writeNumberField("@iot.count", count);
    }
    String nextLink = value.getValues().getNextLink();
    if (nextLink != null) {
        gen.writeStringField("@iot.nextLink", nextLink);
    }

    // TODO begin/end array, iterate over content
    gen.writeFieldName("value");
    gen.writeObject(value.getValues());
    gen.writeEndObject();
}

---

From source file:models.GroupSerializer.java

@Override
public void serialize(Group group, JsonGenerator jgen, SerializerProvider provider) throws IOException {
    jgen.writeStartObject();/*from  w w w .  j ava2 s .  c  o m*/
    jgen.writeStringField("id", group.getId());
    jgen.writeStringField("comment", parseReferencesInComment(group));
    jgen.writeStringField("label", group.getLabel());
    jgen.writeFieldName("unit");
    jgen.writeObject(group.getUnit());
    jgen.writeFieldName("type");
    jgen.writeObject(group.getType());

    jgen.writeFieldName("commonKeywords");
    jgen.writeObject(group.getCommonKeywords());

    jgen.writeFieldName("dimensions");
    jgen.writeStartArray();
    for (Dimension dim : group.getDimSet().dimensions) {
        jgen.writeStartObject();
        jgen.writeFieldName("id");
        jgen.writeObject(dim.getId());
        jgen.writeFieldName("keywords");
        jgen.writeObject(dim.keywords);
        jgen.writeFieldName("keywordsPosition");
        jgen.writeObject(dim.keywordsPosition);
        jgen.writeFieldName("orientation");
        jgen.writeObject(group.getDimSet().getDimensionOrientation(dim));
        jgen.writeEndObject();
    }
    jgen.writeEndArray();

    jgen.writeFieldName("overlap");
    jgen.writeStartArray();
    for (Group otherGroup : group.getOverlappingGroups()) {
        jgen.writeStartObject();
        jgen.writeStringField("id", otherGroup.getId());
        jgen.writeStringField("label", otherGroup.getLabel());
        jgen.writeEndObject();
    }
    jgen.writeEndArray();

    jgen.writeFieldName("references");
    jgen.writeStartArray();
    for (Reference ref : group.getReferences()) {
        jgen.writeObject(ref);
    }
    jgen.writeEndArray();

    jgen.writeFieldName("sourceRelations");
    jgen.writeStartArray();
    for (SourceRelation sourceRelation : group.getSourceRelations()) {
        jgen.writeObject(sourceRelation);
    }
    jgen.writeEndArray();

    jgen.writeFieldName("elementsURI");
    jgen.writeStartObject();
    for (SingleElement element : group.getElements()) {
        jgen.writeStringField(StringUtils.join(element.getKeywords(), "+") + "+" + element.getUnit().getId(),
                element.getId());
    }
    jgen.writeEndObject();

    if (group.getType() == Type.COEFFICIENT) {
        jgen.writeFieldName("elementsValue");
        jgen.writeStartObject();
        for (SingleElement element : group.getElements()) {
            Coefficient coeff = (Coefficient) element;
            jgen.writeFieldName(StringUtils.join(element.getKeywords(), "+") + "+" + element.getUnit().getId());
            jgen.writeStartObject();
            jgen.writeNumberField("value", coeff.getValue().value);
            jgen.writeNumberField("uncertainty", coeff.getValue().uncertainty);
            jgen.writeEndObject();
        }
        jgen.writeEndObject();
    } else {
        jgen.writeFieldName("elementsImpactsAndFlows");
        jgen.writeStartObject();
        for (SingleElement element : group.getElements()) {
            Process process = (Process) element;
            jgen.writeFieldName(StringUtils.join(element.getKeywords(), "+") + "+" + element.getUnit().getId());
            jgen.writeStartObject();
            for (ElementaryFlow flow : process.getCalculatedFlows().values()) {
                jgen.writeFieldName(flow.getType().getId());
                jgen.writeStartObject();
                jgen.writeNumberField("value", flow.getValue().value);
                jgen.writeNumberField("uncertainty", flow.getValue().uncertainty);
                jgen.writeEndObject();
            }
            for (Impact impact : process.getImpacts().values()) {
                jgen.writeFieldName(impact.getType().getId());
                jgen.writeStartObject();
                jgen.writeNumberField("value", impact.getValue().value);
                jgen.writeNumberField("uncertainty", impact.getValue().uncertainty);
                jgen.writeEndObject();
            }
            jgen.writeEndObject();
        }
        jgen.writeEndObject();
    }

    jgen.writeEndObject();
}

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