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

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:piazza.services.ingest.util.GeoJsonSerializer.java

private void writePolygon(JsonGenerator jgen, Polygon value) throws IOException {
    jgen.writeStartObject();
    jgen.writeStringField("type", "Polygon");
    jgen.writeFieldName("coordinates");
    writePolygonCoordinates(jgen, value);

    jgen.writeEndObject();//from   w ww  .  j  av a 2s  .c om
}

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From source file:name.osipov.alexey.server.ServerHandler.java

@Override
public void channelRead(ChannelHandlerContext ctx, Object msg) throws IOException {
    if (msg instanceof HttpRequest) {
        HttpRequest req = (HttpRequest) msg;

        if (HttpHeaders.is100ContinueExpected(req)) {
            ctx.write(new DefaultFullHttpResponse(HttpVersion.HTTP_1_1, HttpResponseStatus.CONTINUE));
            return;
        }//from ww w. j ava  2 s  . co  m

        //String passkey = req.headers().get("passkey");

        // in case of large output this buffer will demand memory
        // writing directly to channel maybe more efficient...
        ByteBufOutputStream bufstream = new ByteBufOutputStream(Unpooled.buffer());
        JsonGenerator json = new JsonFactory().createGenerator(bufstream);
        json.writeStartObject();

        HttpResponseStatus status = HttpResponseStatus.INTERNAL_SERVER_ERROR;

        switch (req.getUri()) {
        case "/register": {
            User u = users.Register();
            json.writeNumberField("id", u.getId());
            json.writeBinaryField("key", u.getKey().asBinary());
            status = HttpResponseStatus.OK;
        }
            break;

        case "/statistics": {
            String hashed_key_base64 = req.headers().get("key");
            byte[] hashed_key = Base64.decodeBase64(hashed_key_base64);
            long salt = System.currentTimeMillis() / 1000 / 30;
            User u = users.getBySaltedHash(hashed_key, salt);
            if (u != null) {
                u.requestHappen();
                json.writeNumberField("id", u.getId());
                json.writeNumberField("requests", u.getRequests());
                status = HttpResponseStatus.OK;
            } else
                status = HttpResponseStatus.UNAUTHORIZED;
        }
            break;
        }

        json.writeEndObject();
        json.close();

        FullHttpResponse response = new DefaultFullHttpResponse(HttpVersion.HTTP_1_1, status,
                bufstream.buffer());
        response.headers().set(HttpHeaders.Names.CONTENT_TYPE, "text/plain");
        response.headers().set(HttpHeaders.Names.CONTENT_LENGTH, response.content().readableBytes());

        if (!HttpHeaders.isKeepAlive(req)) {
            ctx.write(response).addListener(ChannelFutureListener.CLOSE);
        } else {
            response.headers().set(HttpHeaders.Names.CONNECTION, Values.KEEP_ALIVE);
            ctx.write(response);
        }
    }
}

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

public <K, V> void serialize(@Nonnull ViewResponse<K, V, ?> viewResponse,
        @Nonnull JacksonSerializer<? super K> keySerializer,
        @Nonnull JacksonSerializer<? super V> valueSerializer, @Nonnull OutputStream out) throws IOException {
    JsonFactory jsonFactory = JacksonSupport.getJsonFactory();
    JsonGenerator generator = jsonFactory.createJsonGenerator(out, JsonEncoding.UTF8);

    generator.writeStartObject();

    generator.writeNumberField(PROPERTY_TOTAL_ROWS, viewResponse.getTotalRows());
    generator.writeNumberField(PROPERTY_OFFSET, viewResponse.getOffset());

    //Now the rows
    generator.writeFieldName(PROPERTY_ROWS);
    generator.writeStartArray();//  w w  w .  j  a  v  a 2s .  c  o  m

    for (Row<K, V, ?> row : viewResponse.getRows()) {
        rowSerializer.serialize(row, keySerializer, valueSerializer, generator);
    }

    generator.writeEndArray();

    generator.writeEndObject();
    generator.close();
}

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From source file:com.github.fge.jsonpatch.mergepatch.ObjectMergePatch.java

@Override
public void serialize(final JsonGenerator jgen, final SerializerProvider provider)
        throws IOException, JsonProcessingException {
    jgen.writeStartObject();

    /*/*from   www. java  2s . c  o m*/
     * Write removed members as JSON nulls
     */
    for (final String member : removedMembers)
        jgen.writeNullField(member);

    /*
     * Write modified members; delegate to serialization for writing values
     */
    for (final Map.Entry<String, JsonMergePatch> entry : modifiedMembers.entrySet()) {
        jgen.writeFieldName(entry.getKey());
        entry.getValue().serialize(jgen, provider);
    }

    jgen.writeEndObject();
}

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From source file:com.navercorp.pinpoint.web.view.ApplicationAgentHostListSerializer.java

private void writeApplicationList(ApplicationAgentHostList applicationAgentHostList,
        JsonGenerator jsonGenerator) throws IOException {
    for (Map.Entry<String, List<AgentInfo>> e : applicationAgentHostList.getMap().entrySet()) {
        jsonGenerator.writeStartObject();
        writeApplication(e.getKey(), e.getValue(), jsonGenerator);
        jsonGenerator.writeEndObject();//from  ww w .ja  va 2s. c  om
    }

}

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From source file:net.opentsdb.contrib.tsquare.web.view.GraphiteJsonResponseWriter.java

@Override
public void write(final AnnotatedDataPoints annotatedPoints, final ResponseContext context) throws IOException {
    final JsonGenerator jsonGenerator = getJsonGenerator(context);

    jsonGenerator.writeStartObject();
    jsonGenerator.writeStringField("target", annotatedPoints.getDataPoints().metricName());

    if (includeAllTags) {
        jsonGenerator.writeArrayFieldStart("tags");
        for (final Map.Entry<String, String> entry : annotatedPoints.getDataPoints().getTags().entrySet()) {
            jsonGenerator.writeStartObject();
            jsonGenerator.writeStringField("key", entry.getKey());
            jsonGenerator.writeStringField("value", entry.getValue());
            jsonGenerator.writeEndObject();
        }//w w  w .j a  va  2 s . c om
        jsonGenerator.writeEndArray();
    }

    if (includeAggregatedTags) {
        jsonGenerator.writeArrayFieldStart("aggregatedTags");
        for (final String tag : annotatedPoints.getDataPoints().getAggregatedTags()) {
            jsonGenerator.writeString(tag);
        }
        jsonGenerator.writeEndArray();
    }

    if (summarize) {
        final DataPointsAsDoubles doubles = new DataPointsAsDoubles(annotatedPoints.getDataPoints());
        final double aggValue = Aggregators.SUM.runDouble(doubles);
        jsonGenerator.writeNumberField("summarizedValue", aggValue);
    } else {
        jsonGenerator.writeArrayFieldStart("datapoints");

        for (final DataPoint p : annotatedPoints.getDataPoints()) {
            jsonGenerator.writeStartArray();

            if (p.isInteger()) {
                jsonGenerator.writeNumber(p.longValue());
            } else {
                jsonGenerator.writeNumber(p.doubleValue());
            }

            if (isMillisecondResolution()) {
                jsonGenerator.writeNumber(p.timestamp());
            } else {
                jsonGenerator.writeNumber(TimeUnit.MILLISECONDS.toSeconds(p.timestamp()));
            }

            jsonGenerator.writeEndArray();
        }

        jsonGenerator.writeEndArray();
    }

    jsonGenerator.writeEndObject();
}

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From source file:org.n52.ar.layar.LayarResponse.java

public void toJSON(final JsonGenerator generator) throws IOException {
    generator.writeStartObject();

    /*//from w  w w. jav a2 s.  c om
     * mandatory:
     */
    generator.writeStringField("layer", this.layer);
    if (this.errorCode != CODE_ERROR && this.hotspots.size() < 1) {
        this.errorString = "No POI found. Please increase the search range to try again.";
        this.errorCode = CODE_ERROR;
    }
    generator.writeStringField("errorString", this.errorString);
    generator.writeNumberField("errorCode", this.errorCode);

    // paging is not implemented yet
    generator.writeBooleanField("morePages", this.morePages);
    if (this.nextPageKey != null) {
        generator.writeStringField("nextPageKey", this.nextPageKey);
    } else {
        generator.writeNullField("nextPageKey");
    }
    // generator.writeNumberField("refreshInterval", 3600);
    // generator.writeNumberField("refreshDistance", 50);
    // generator.writeBooleanField("fullRefresh", false);
    // actions for the entire layer: http://layar.com/documentation/browser/api/getpois-response/actions/
    if (this.errorCode == CODE_OK)
        this.showMessage = "You got " + this.hotspots.size() + " hits in the area around you!";
    generator.writeStringField("showMessage", this.showMessage);
    // deletedHotspots
    // animations
    // showDialog: title, description, iconURL, actions
    generator.writeNullField("biwStyle");

    /*
     * hotspots (mandatory):
     */
    createHotspots(generator);

    generator.writeEndObject();
}

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From source file:com.cedarsoft.serialization.test.performance.Bson4JacksonTest.java

@Test
public void testIt() throws IOException {
    FileType fileType = new FileType("Canon Raw", new Extension(".", "cr2", true), false);

    ByteArrayOutputStream out = new ByteArrayOutputStream();
    JsonGenerator generator = jsonFactory.createGenerator(out, JsonEncoding.UTF8);

    generator.writeStartObject();
    generator.writeStringField("id", fileType.getId());
    generator.writeBooleanField("dependent", fileType.isDependent());

    generator.writeFieldName("extension");
    generator.writeStartObject();/*from   w ww.  j a va 2 s.  c om*/

    generator.writeStringField("extension", fileType.getExtension().getExtension());
    generator.writeBooleanField("default", fileType.getExtension().isDefault());
    generator.writeStringField("delimiter", fileType.getExtension().getDelimiter());

    generator.writeEndObject();

    //    generator.writeFieldName( "id" );
    //    generator.writeString( fileType.getId() );

    generator.writeEndObject();

    generator.close();
    assertEquals(BSON, Hex.encodeHexString(out.toByteArray()));
}

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From source file:piazza.services.ingest.util.GeoJsonSerializer.java

private void writeMultiPoint(JsonGenerator jgen, MultiPoint value) throws IOException {
    jgen.writeStartObject();
    jgen.writeStringField("type", "MultiPoint");
    jgen.writeArrayFieldStart("coordinates");

    for (int i = 0; i != value.getNumGeometries(); ++i) {
        writePointCoords(jgen, (Point) value.getGeometryN(i));
    }/*w w  w.  j  a  v  a 2  s .com*/

    jgen.writeEndArray();
    jgen.writeEndObject();
}

---

From source file:piazza.services.ingest.util.GeoJsonSerializer.java

private void writeLineString(JsonGenerator jgen, LineString lineString) throws IOException {
    jgen.writeStartObject();
    jgen.writeStringField("type", "LineString");
    jgen.writeFieldName("coordinates");
    writeLineStringCoords(jgen, lineString);
    jgen.writeEndObject();/* w ww . j  ava2  s. co m*/
}

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