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:eu.project.ttc.engines.exporter.JsonCasExporter.java

@Override
public void process(JCas aJCas) throws AnalysisEngineProcessException {
    /*//w  w w  .ja  va2s.c om
     *  Cette mthode est appele par le framework UIMA
     *  pour chaque document  de ta collection (corpus).
     *
     *  Tu peux gnrer ton fichier compagnon dans cette mthode.
     *  (Je te donne l'astuce pour retrouver le nom et le chemin du fichier
     *  de ton corpus correspondant au CAS pass en paramtre de cette
     *  mthode plus tard)
     */

    FSIterator<Annotation> it = aJCas.getAnnotationIndex().iterator();
    Annotation a;
    JsonFactory jsonFactory = new JsonFactory();
    String name = this.getExportFilePath(aJCas, "json");
    File file = new File(this.directoryFile, name);
    FileWriter writer = null;
    try {
        writer = new FileWriter(file);
        LOGGER.debug("Writing " + file.getPath());
        JsonGenerator jg = jsonFactory.createGenerator(writer);
        jg.useDefaultPrettyPrinter();
        jg.writeStartObject();
        jg.writeStringField("file", name);
        jg.writeArrayFieldStart("tag");
        while (it.hasNext()) {
            a = it.next();
            if (a instanceof WordAnnotation) {
                jg.writeStartObject();
                WordAnnotation wordAnno = (WordAnnotation) a;
                for (Feature feat : wordAnno.getType().getFeatures()) {
                    FeatureStructure featureValue = wordAnno.getFeatureValue(feat);
                    if (featureValue != null) {
                        jg.writeFieldName(feat.getName());
                        jg.writeObject(featureValue);
                    }
                }
                jg.writeStringField("tag", wordAnno.getTag());
                jg.writeStringField("lemma", wordAnno.getLemma());
                jg.writeNumberField("begin", wordAnno.getBegin());
                jg.writeNumberField("end", wordAnno.getEnd());
                jg.writeEndObject();
            }
        }
        jg.writeEndArray();
        jg.writeEndObject();
        jg.flush();
        writer.close();
    } catch (IOException e) {
        LOGGER.error("Failure while serializing " + name + "\nCaused by" + e.getClass().getCanonicalName() + ":"
                + e.getMessage(), e);
    }
}

From source file:org.killbill.billing.plugin.meter.api.user.DefaultJsonSamplesOutputer.java

@Override
protected void writeJsonForChunks(final JsonGenerator generator,
        final Collection<? extends TimelineChunk> chunksForSourceAndMetric) throws IOException {
    for (final TimelineChunk chunk : chunksForSourceAndMetric) {
        final String source = timelineDao.getSource(chunk.getSourceId(), context);
        final CategoryRecordIdAndMetric categoryIdAndMetric = timelineDao
                .getCategoryIdAndMetric(chunk.getMetricId(), context);
        final String eventCategory = timelineDao.getEventCategory(categoryIdAndMetric.getEventCategoryId(),
                context);//from w w w . j av a  2s .  c  o m
        final String metric = categoryIdAndMetric.getMetric();

        final String samples = CSVConsumer.getSamplesAsCSV(sampleCoder, chunk);

        // Don't write out empty samples
        if (!Strings.isNullOrEmpty(samples)) {
            generator.writeObject(new SamplesForMetricAndSource(source, eventCategory, metric, samples));
        }
    }
}

From source file:models.CategorySerializer.java

@Override
public void serialize(Category cat, JsonGenerator jgen, SerializerProvider provider) throws IOException {
    jgen.writeStartObject();//from   ww w .  jav a2  s  .  c  o m
    jgen.writeStringField("id", cat.getId());
    jgen.writeStringField("label", cat.getLabel());
    jgen.writeFieldName("children");
    jgen.writeStartArray();
    for (Object obj : cat.getChildren()) {
        if (obj instanceof Group) {
            Group group = (Group) obj;
            jgen.writeStartObject();
            jgen.writeStringField("id", group.getId());
            jgen.writeStringField("label", group.getLabel());
            if (group.getType() == Type.PROCESS) {
                jgen.writeStringField("type", "PROCESS");
            } else {
                jgen.writeStringField("type", "COEFFICIENT");
            }
            jgen.writeEndObject();
        } else {
            jgen.writeObject(obj);
        }
    }
    jgen.writeEndArray();
    jgen.writeEndObject();
}

From source file:org.hawkular.rest.json.RelationshipJacksonSerializer.java

/**
 * <pre>compact:/* w  w  w .  j  a  va2s .c  o m*/
 * {
 *   "id": "1337",
 *   "source": "/tenants/28026b36-8fe4-4332-84c8-524e173a68bf",
 *   "name": "contains",
 *   "target": "28026b36-8fe4-4332-84c8-524e173a68bf/environments/test"
 * }</pre>
 * <p/>
 * <pre>embedded:
 * {
 *   "@context": "http://hawkular.org/inventory/0.1.0/relationship.jsonld",
 *   "id": "1337",
 *   "name": "contains",
 *   "source": {
 *      id: "/tenants/28026b36-8fe4-4332-84c8-524e173a68bf",
 *      shortId: "28026b36-8fe4-4332-84c8-524e173a68bf",
 *      type: "Tenant"
 *   },
 *   "target": {
 *      id: "28026b36-8fe4-4332-84c8-524e173a68bf/environments/test",
 *      shortId: "test",
 *      type: "Environment"
 *   }
 * }</pre>
 */
@Override
public void serialize(Relationship relationship, JsonGenerator jg, SerializerProvider serializerProvider)
        throws IOException {
    jg.writeStartObject();

    jg.writeFieldName(FIELD_ID);
    jg.writeString(relationship.getId());

    jg.writeFieldName(FIELD_NAME);
    jg.writeString(relationship.getName());

    jg.writeFieldName(FIELD_SOURCE);
    jg.writeString(relationship.getSource().toString());

    jg.writeFieldName(FIELD_TARGET);
    jg.writeString(relationship.getTarget().toString());

    if (relationship.getProperties() != null && !relationship.getProperties().isEmpty()) {
        jg.writeFieldName(FIELD_PROPERTIES);
        jg.writeStartObject();
        for (Map.Entry<String, Object> property : relationship.getProperties().entrySet()) {
            jg.writeFieldName(property.getKey());
            jg.writeObject(property.getValue());
        }
        jg.writeEndObject();
    }

    jg.writeEndObject();
}

From source file:org.killbill.billing.plugin.meter.api.user.AccumulatingJsonSamplesOutputer.java

@Override
protected void writeJsonForChunks(final JsonGenerator generator,
        final Collection<? extends TimelineChunk> chunksForSourceAndMetric) throws IOException {
    for (final TimelineChunk chunk : chunksForSourceAndMetric) {
        final String source = timelineDao.getSource(chunk.getSourceId(), context);
        final CategoryRecordIdAndMetric categoryIdAndMetric = timelineDao
                .getCategoryIdAndMetric(chunk.getMetricId(), context);
        final String eventCategory = timelineDao.getEventCategory(categoryIdAndMetric.getEventCategoryId(),
                context);/* ww w  .  j ava 2 s . co  m*/
        final String metric = categoryIdAndMetric.getMetric();

        final String samples = CSVConsumer.getSamplesAsCSV(sampleCoder, chunk, accumulatorSampleConsumer);

        // Don't write out empty samples
        if (!Strings.isNullOrEmpty(samples)) {
            generator.writeObject(new SamplesForMetricAndSource(source, eventCategory, metric, samples));
        }

        lastSource = source;
        lastEventCategory = eventCategory;
        lastMetric = metric;
    }
}

From source file:gov.bnl.channelfinder.ChannelsResource.java

/**
 * GET method for retrieving a collection of Channel instances,
 * based on a multi-parameter query specifiying patterns for tags, property values,
 * and channel names to match against./*from w  ww  .j a  v  a  2s  .c om*/
 *
 * @return HTTP Response
 */
@GET
@Produces({ "application/json" })
public Response query() {
    StringBuffer performance = new StringBuffer();
    long start = System.currentTimeMillis();
    long totalStart = System.currentTimeMillis();
    Client client = ElasticSearchClient.getSearchClient();
    start = System.currentTimeMillis();
    String user = securityContext.getUserPrincipal() != null ? securityContext.getUserPrincipal().getName()
            : "";
    try {
        MultivaluedMap<String, String> parameters = uriInfo.getQueryParameters();
        BoolQueryBuilder qb = boolQuery();
        int size = 10000;
        for (Entry<String, List<String>> parameter : parameters.entrySet()) {
            switch (parameter.getKey()) {
            case "~name":
                for (String value : parameter.getValue()) {
                    DisMaxQueryBuilder nameQuery = disMaxQuery();
                    for (String pattern : value.split("\\|")) {
                        nameQuery.add(wildcardQuery("name", pattern.trim()));
                    }
                    qb.must(nameQuery);
                }
                break;
            case "~tag":
                for (String value : parameter.getValue()) {
                    DisMaxQueryBuilder tagQuery = disMaxQuery();
                    for (String pattern : value.split("\\|")) {
                        tagQuery.add(wildcardQuery("tags.name", pattern.trim()));
                    }
                    qb.must(nestedQuery("tags", tagQuery));
                }
                break;
            case "~size":
                Optional<String> maxSize = parameter.getValue().stream().max((o1, o2) -> {
                    return Integer.valueOf(o1).compareTo(Integer.valueOf(o2));
                });
                if (maxSize.isPresent()) {
                    size = Integer.valueOf(maxSize.get());
                }
            default:
                DisMaxQueryBuilder propertyQuery = disMaxQuery();
                for (String value : parameter.getValue()) {
                    for (String pattern : value.split("\\|")) {
                        propertyQuery.add(nestedQuery("properties",
                                boolQuery().must(matchQuery("properties.name", parameter.getKey().trim()))
                                        .must(wildcardQuery("properties.value", pattern.trim()))));
                    }
                }
                qb.must(propertyQuery);
                break;
            }
        }

        performance.append("|prepare:" + (System.currentTimeMillis() - start));
        start = System.currentTimeMillis();
        final SearchResponse qbResult = client.prepareSearch("channelfinder").setQuery(qb).setSize(size)
                .execute().actionGet();
        performance.append(
                "|query:(" + qbResult.getHits().getTotalHits() + ")" + (System.currentTimeMillis() - start));
        start = System.currentTimeMillis();
        final ObjectMapper mapper = new ObjectMapper();
        mapper.addMixIn(XmlProperty.class, OnlyXmlProperty.class);
        mapper.addMixIn(XmlTag.class, OnlyXmlTag.class);
        start = System.currentTimeMillis();

        StreamingOutput stream = new StreamingOutput() {

            @Override
            public void write(OutputStream os) throws IOException, WebApplicationException {
                JsonGenerator jg = mapper.getFactory().createGenerator(os, JsonEncoding.UTF8);
                jg.writeStartArray();
                if (qbResult != null) {
                    for (SearchHit hit : qbResult.getHits()) {
                        jg.writeObject(mapper.readValue(hit.source(), XmlChannel.class));
                        jg.flush();
                    }
                }
                jg.writeEndArray();
                jg.flush();
                jg.close();
            }
        };

        performance.append("|parse:" + (System.currentTimeMillis() - start));
        Response r = Response.ok(stream).build();
        log.info(user + "|" + uriInfo.getPath() + "|GET|OK" + performance.toString() + "|total:"
                + (System.currentTimeMillis() - totalStart) + "|" + r.getStatus() + "|returns "
                + qbResult.getHits().getTotalHits() + " channels");
        //            log.info( qbResult.getHits().getTotalHits() + " " +(System.currentTimeMillis() - totalStart));
        return r;
    } catch (Exception e) {
        return handleException(user, "GET", Response.Status.INTERNAL_SERVER_ERROR, e);
    } finally {
    }
}

From source file:gov.bnl.channelfinder.PropertiesResource.java

/**
 * GET method for retrieving the list of properties in the database.
 *
 * @return list of properties/*from  ww  w. j a  v  a2 s  . c  om*/
 */
@GET
@Produces({ MediaType.APPLICATION_JSON })
public Response list() {
    Client client = getNewClient();
    final String user = securityContext.getUserPrincipal() != null
            ? securityContext.getUserPrincipal().getName()
            : "";
    final ObjectMapper mapper = new ObjectMapper();
    mapper.addMixIn(XmlProperty.class, OnlyXmlProperty.class);
    try {
        MultivaluedMap<String, String> parameters = uriInfo.getQueryParameters();
        int size = 10000;
        if (parameters.containsKey("~size")) {
            Optional<String> maxSize = parameters.get("~size").stream().max((o1, o2) -> {
                return Integer.valueOf(o1).compareTo(Integer.valueOf(o2));
            });
            if (maxSize.isPresent()) {
                size = Integer.valueOf(maxSize.get());
            }

        }
        final SearchResponse response = client.prepareSearch("properties").setTypes("property")
                .setQuery(new MatchAllQueryBuilder()).setSize(size).execute().actionGet();
        StreamingOutput stream = new StreamingOutput() {
            @Override
            public void write(OutputStream os) throws IOException, WebApplicationException {
                JsonGenerator jg = mapper.getFactory().createGenerator(os, JsonEncoding.UTF8);
                jg.writeStartArray();
                if (response != null) {
                    for (SearchHit hit : response.getHits()) {
                        jg.writeObject(mapper.readValue(hit.source(), XmlProperty.class));
                    }
                }
                jg.writeEndArray();
                jg.flush();
                jg.close();
            }
        };
        Response r = Response.ok(stream).build();
        audit.info(user + "|" + uriInfo.getPath() + "|GET|OK|" + r.getStatus() + "|returns "
                + response.getHits().getTotalHits() + " properties");
        return r;
    } catch (Exception e) {
        return handleException(user, "GET", Response.Status.INTERNAL_SERVER_ERROR, e);
    } finally {
        client.close();
    }
}

From source file:com.spotify.apollo.meta.TypesafeConfigSerializer.java

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

    if (value.valueType() == ConfigValueType.OBJECT) {
        final ConfigObject object = (ConfigObject) value;

        jgen.writeStartObject();/* w ww .j  a v  a2s  .  c  om*/
        for (Map.Entry<String, ConfigValue> valueEntry : object.entrySet()) {
            if (withOrigins) {
                final ConfigOrigin origin = valueEntry.getValue().origin();
                jgen.writeStringField(valueEntry.getKey() + "__origin",
                        origin.description() + (origin.filename() != null ? ", " + origin.filename() : ""));
            }
            jgen.writeObjectField(valueEntry.getKey(), valueEntry.getValue());
        }
        jgen.writeEndObject();
    } else if (value.valueType() == ConfigValueType.LIST) {
        final ConfigList list = (ConfigList) value;

        jgen.writeStartArray();
        for (ConfigValue configValue : list) {
            jgen.writeObject(configValue);
        }
        jgen.writeEndArray();
    } else {
        jgen.writeObject(value.unwrapped());
    }
}

From source file:gov.bnl.channelfinder.TagsResource.java

/**
 * GET method for retrieving the list of tags in the database.
 *
 * @return list of tags/*from   w w w . j  a  v  a  2 s.com*/
 */
@GET
@Produces({ MediaType.APPLICATION_JSON })
public Response list() {
    Client client = getNewClient();
    String user = securityContext.getUserPrincipal() != null ? securityContext.getUserPrincipal().getName()
            : "";
    final ObjectMapper mapper = new ObjectMapper();
    mapper.addMixIn(XmlTag.class, OnlyXmlTag.class);
    try {
        MultivaluedMap<String, String> parameters = uriInfo.getQueryParameters();
        int size = 10000;
        if (parameters.containsKey("~size")) {
            Optional<String> maxSize = parameters.get("~size").stream().max((o1, o2) -> {
                return Integer.valueOf(o1).compareTo(Integer.valueOf(o2));
            });
            if (maxSize.isPresent()) {
                size = Integer.valueOf(maxSize.get());
            }

        }
        final SearchResponse response = client.prepareSearch("tags").setTypes("tag")
                .setQuery(new MatchAllQueryBuilder()).setSize(size).execute().actionGet();
        StreamingOutput stream = new StreamingOutput() {
            @Override
            public void write(OutputStream os) throws IOException, WebApplicationException {
                JsonGenerator jg = mapper.getFactory().createGenerator(os, JsonEncoding.UTF8);
                jg.writeStartArray();
                if (response != null) {
                    for (SearchHit hit : response.getHits()) {
                        jg.writeObject(mapper.readValue(hit.source(), XmlTag.class));
                    }
                }
                jg.writeEndArray();
                jg.flush();
                jg.close();
            }
        };
        Response r = Response.ok(stream).build();
        log.fine(user + "|" + uriInfo.getPath() + "|GET|OK|" + r.getStatus() + response.getTook() + "|returns "
                + response.getHits().getTotalHits() + " tags");
        return r;
    } catch (Exception e) {
        return handleException(user, Response.Status.INTERNAL_SERVER_ERROR, e);
    } finally {
        client.close();
    }
}