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:org.example.testcases.BasicTypeArraysSerializer.java

private void writeObject(JsonGenerator jg, BasicTypeArrays basicTypeArrays) throws IOException {
    jg.writeStartObject();
    // write field strings...
    jg.writeFieldName("strings");
    writeArray_String(jg, basicTypeArrays.strings);
    // write field booleans...
    jg.writeFieldName("booleans");
    writeArray_boolean(jg, basicTypeArrays.booleans);
    // write field floats...
    jg.writeFieldName("floats");
    writeArray_float(jg, basicTypeArrays.floats);
    // write field doubles...
    jg.writeFieldName("doubles");
    writeArray_double(jg, basicTypeArrays.doubles);
    // write field ints...
    jg.writeFieldName("ints");
    writeArray_int(jg, basicTypeArrays.ints);
    // write field chars...
    jg.writeFieldName("chars");
    writeArray_char(jg, basicTypeArrays.chars);
    // write field shorts...
    jg.writeFieldName("shorts");
    writeArray_short(jg, basicTypeArrays.shorts);
    // write field bytes...
    jg.writeFieldName("bytes");
    writeArray_byte(jg, basicTypeArrays.bytes);
    // done./*from  ww  w .  j a v a2  s.  c om*/
    jg.writeEndObject();
}

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From source file:org.emfjson.jackson.databind.ser.EMapStringSerializer.java

@Override
public void serialize(EList<Map.Entry<String, ?>> value, JsonGenerator jg, SerializerProvider serializers)
        throws IOException {
    if (value == null || value.isEmpty()) {
        jg.writeNull();/*from w w  w . j a va2  s  .  co  m*/
        return;
    }

    jg.writeStartObject();
    for (Map.Entry<String, ?> entry : value) {
        jg.writeObjectField(entry.getKey(), entry.getValue());
    }
    jg.writeEndObject();
}

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From source file:org.mongojack.TestCustomObjectMapper.java

private ObjectMapper createObjectMapper() {
    SimpleModule module = new SimpleModule("MySimpleModule", new Version(1, 0, 0, null, "", ""));
    module.addDeserializer(Custom.class, new JsonDeserializer<Custom>() {
        @Override// w w  w .  j a va2  s .  c  om
        public Custom deserialize(JsonParser jp, DeserializationContext ctxt) throws IOException {
            JsonNode node = jp.readValueAsTree();
            return new Custom(node.get("v1").asText(), node.get("v2").asText());
        }
    });
    module.addSerializer(Custom.class, new JsonSerializer<Custom>() {
        @Override
        public void serialize(Custom value, JsonGenerator jgen, SerializerProvider provider)
                throws IOException {
            jgen.writeStartObject();
            jgen.writeFieldName("v1");
            jgen.writeString(value.value1);
            jgen.writeFieldName("v2");
            jgen.writeString(value.value2);
            jgen.writeEndObject();
        }
    });

    ObjectMapper objectMapper = new ObjectMapper();
    objectMapper.registerModule(module);
    MongoJackModule.configure(objectMapper);
    return objectMapper;
}

---

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

private void writePoint(JsonGenerator jgen, Point p) throws IOException {
    jgen.writeStartObject();
    jgen.writeStringField("type", "Point");
    jgen.writeFieldName("coordinates");
    writePointCoords(jgen, p);//ww  w .  j av a2  s.  c om
    jgen.writeEndObject();
}

---

From source file:com.msopentech.odatajclient.engine.data.json.JSONPropertySerializer.java

/**
 * {@inheritDoc }/* w  w  w. j  av  a2 s.c o m*/
 */
@Override
public void serialize(final JSONProperty property, final JsonGenerator jgen, final SerializerProvider provider)
        throws IOException, JsonProcessingException {

    jgen.writeStartObject();

    if (property.getMetadata() != null) {
        jgen.writeStringField(ODataConstants.JSON_METADATA, property.getMetadata().toASCIIString());
    }

    final Element content = property.getContent();
    if (XMLUtils.hasOnlyTextChildNodes(content)) {
        jgen.writeStringField(ODataConstants.JSON_VALUE, content.getTextContent());
    } else {
        try {
            final DocumentBuilder builder = ODataConstants.DOC_BUILDER_FACTORY.newDocumentBuilder();
            final Document document = builder.newDocument();
            final Element wrapper = document.createElement(ODataConstants.ELEM_PROPERTY);

            if (XMLUtils.hasElementsChildNode(content)) {
                wrapper.appendChild(document.renameNode(document.importNode(content, true), null,
                        ODataConstants.JSON_VALUE));

                DOMTreeUtils.writeSubtree(jgen, wrapper);
            } else if (EdmSimpleType.isGeospatial(content.getAttribute(ODataConstants.ATTR_M_TYPE))) {
                wrapper.appendChild(document.renameNode(document.importNode(content, true), null,
                        ODataConstants.JSON_VALUE));

                DOMTreeUtils.writeSubtree(jgen, wrapper, true);
            } else {
                DOMTreeUtils.writeSubtree(jgen, content);
            }
        } catch (Exception e) {
            throw new JsonParseException("Cannot serialize property", JsonLocation.NA, e);
        }
    }

    jgen.writeEndObject();
}

---

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

@Test
public void testWriteTo_nonUnwrappable() throws IOException {

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

    LogstashMarker marker = Markers.appendFields(Long.valueOf(1L));
    generator.writeStartObject();
    marker.writeTo(generator);//  w  w w . j av  a  2s  . c  om
    generator.writeEndObject();
    generator.flush();

    assertThat(writer.toString()).isEqualTo("{}");
}

---

From source file:com.ibm.ws.lars.rest.ErrorHandler.java

@Override
protected void service(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {

    response.setStatus(500);/*  www.j  a  v a  2  s  .com*/
    response.setContentType(MediaType.APPLICATION_JSON);
    PrintWriter printWriter = response.getWriter();
    JsonGenerator frontPageJsonGenerator = new JsonFactory().createGenerator(printWriter);
    frontPageJsonGenerator.setPrettyPrinter(new DefaultPrettyPrinter());

    frontPageJsonGenerator.writeStartObject();
    frontPageJsonGenerator.writeStringField("message",
            "Internal server error, please contact the server administrator");
    frontPageJsonGenerator.writeNumberField("statusCode", response.getStatus());
    frontPageJsonGenerator.writeEndObject();

    frontPageJsonGenerator.flush();
    frontPageJsonGenerator.close();
}

---

From source file:ijfx.service.overlay.io.OverlaySerializer.java

private void saveRectangleOverlay(RectangleOverlay rectangleOverlay, JsonGenerator jg) throws IOException {
    jg.writeStartObject();
    jg.writeStringField(JsonOverlayToken.OVERLAY_TYPE, JsonOverlayToken.RECTANGLE_OVERLAY);
    int dimensionCount = rectangleOverlay.numDimensions();

    Double[] origin = Utils.extractArray(rectangleOverlay::getOrigin, dimensionCount);
    Double[] extent = Utils.extractArray(rectangleOverlay::getExtent, dimensionCount);

    ColorRGB fcolor = rectangleOverlay.getFillColor();
    ColorRGB lcolor = rectangleOverlay.getLineColor();

    Integer[] fill_color = { fcolor.getRed(), fcolor.getGreen(), fcolor.getBlue() };
    Integer[] line_color = { lcolor.getRed(), lcolor.getGreen(), lcolor.getBlue() };

    double width = rectangleOverlay.getLineWidth();

    writeNumberArray(jg, JsonOverlayToken.ORIGIN, origin);
    writeNumberArray(jg, JsonOverlayToken.EXTENT, extent);

    writeNumberArray(jg, JsonOverlayToken.FILL_COLOR, fill_color);
    writeNumberArray(jg, JsonOverlayToken.LINE_COLOR, line_color);

    jg.writeFieldName(JsonOverlayToken.LINE_WIDTH);
    jg.writeNumber(width);//from   ww  w  . j  a va  2s .  c  om

    jg.writeEndObject();

}

---

From source file:com.cedarsoft.serialization.test.performance.JacksonTest.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();//  ww  w  .  j ava 2s . c  o  m

    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(JSON, out.toString());
}

---

From source file:ijfx.service.overlay.io.OverlaySerializer.java

private void saveLineOverlay(LineOverlay overlay, JsonGenerator jg) throws IOException {

    jg.writeStartObject();
    jg.writeStringField(JsonOverlayToken.OVERLAY_TYPE, JsonOverlayToken.LINE_OVERLAY);

    Double[] lineStart = Utils.extractArray(overlay::getLineStart, overlay.numDimensions());
    Double[] lineEnd = Utils.extractArray(overlay::getLineEnd, overlay.numDimensions());

    writeNumberArray(jg, JsonOverlayToken.BEGIN, lineStart);
    writeNumberArray(jg, JsonOverlayToken.END, lineEnd);

    ColorRGB fcolor = overlay.getFillColor();
    ColorRGB lcolor = overlay.getLineColor();

    Integer[] fill_color = { fcolor.getRed(), fcolor.getGreen(), fcolor.getBlue() };
    Integer[] line_color = { lcolor.getRed(), lcolor.getGreen(), lcolor.getBlue() };

    double width = overlay.getLineWidth();

    writeNumberArray(jg, JsonOverlayToken.FILL_COLOR, fill_color);
    writeNumberArray(jg, JsonOverlayToken.LINE_COLOR, line_color);

    jg.writeFieldName(JsonOverlayToken.LINE_WIDTH);
    jg.writeNumber(width);//from  w w  w  . j  a va  2  s .  c om

    jg.writeEndObject();

}

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