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

Introduction

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

Prototype

public abstract void writeStartArray() throws IOException, JsonGenerationException;

Source Link

Document

Method for writing starting marker of a JSON Array value (character '['; plus possible white space decoration if pretty-printing is enabled).

Usage

From source file:com.example.MessageList.java

/**
 * Build message list dependent on the format Message Hub requires. The
 * message list is in the form: [{ "value": base_64_string }, ...]
 * /*from ww w .  j a  v  a  2  s . c  om*/
 * @return {String} String representation of a JSON object.
 * @throws IOException
 */
public String build() throws IOException {
    final JsonFactory jsonFactory = new JsonFactory();
    ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
    JsonGenerator jsonGenerator = null;

    jsonGenerator = jsonFactory.createGenerator(outputStream);

    // [
    jsonGenerator.writeStartArray();

    // Write each message as a JSON object in
    // the form:
    // { "value": base_64_string }
    for (int i = 0; i < this.messages.size(); i++) {
        jsonGenerator.writeStartObject();
        jsonGenerator.writeFieldName("value");
        jsonGenerator.writeObject(this.messages.get(i));
        jsonGenerator.writeEndObject();
    }

    // ]
    jsonGenerator.writeEndArray();

    // Close underlying streams and return string representation.
    jsonGenerator.close();
    outputStream.close();

    return new String(outputStream.toByteArray());
}

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

private void writeDoubleArray(JsonGenerator jg, Double[] array) throws IOException {
    jg.writeStartArray();
    for (Double n : array) {
        jg.writeNumber(n);//from   w  w  w .j a  v  a2s. co m
    }
    jg.writeEndArray();
}

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

private void writePointCoords(JsonGenerator jgen, Point p) throws IOException {
    jgen.writeStartArray();
    DecimalFormat df = new DecimalFormat("#.#");
    df.setMaximumFractionDigits(8);/*w w  w . j a va 2  s  . com*/
    jgen.writeNumber(df.format(p.getX()));
    jgen.writeNumber(df.format(p.getY()));
    jgen.writeEndArray();
}

From source file:io.druid.data.input.impl.SqlFirehoseTest.java

@Test
public void testClose() throws IOException {
    File file = File.createTempFile("test", "", TEST_DIR);
    final TestCloseable closeable = new TestCloseable();
    try (FileOutputStream fos = new FileOutputStream(file)) {
        final JsonGenerator jg = objectMapper.getFactory().createGenerator(fos);
        jg.writeStartArray();
        jg.writeEndArray();//www. java 2s  .  c  om
        jg.close();
    }

    final JsonIterator<Map<String, Object>> jsonIterator = new JsonIterator(
            new TypeReference<Map<String, Object>>() {
            }, new FileInputStream(file), closeable, objectMapper);

    final SqlFirehose firehose = new SqlFirehose(ImmutableList.of(jsonIterator).iterator(), parser, closeable);
    firehose.hasMore(); // initialize lineIterator
    firehose.close();
    Assert.assertTrue(closeable.closed);
}

From source file:com.github.fge.jsonpatch.JsonPatch.java

@Override
public void serialize(final JsonGenerator jgen, final SerializerProvider provider) throws IOException {
    jgen.writeStartArray();
    for (final JsonPatchOperation op : operations)
        op.serialize(jgen, provider);//ww w. j a  v  a 2  s.c om
    jgen.writeEndArray();
}

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

private void writePolygonCoordinates(JsonGenerator jgen, Polygon value) throws IOException {
    jgen.writeStartArray();
    writeLineStringCoords(jgen, value.getExteriorRing());

    for (int i = 0; i != value.getNumInteriorRing(); ++i) {
        writeLineStringCoords(jgen, value.getInteriorRingN(i));
    }/*  w  w  w  .  java  2  s.  com*/
    jgen.writeEndArray();
}

From source file:com.zenesis.qx.remote.SimpleQueue.java

@Override
public synchronized void serialize(JsonGenerator gen, SerializerProvider sp)
        throws IOException, JsonProcessingException {
    gen.writeStartArray();
    while (!values.isEmpty()) {
        CommandId id = values.keySet().iterator().next();
        Object data = values.remove(id);

        if (id.type == CommandType.DEFINE) {
            ProxyType type = (ProxyType) id.object;
            ProxySessionTracker tracker = ((ProxyObjectMapper) gen.getCodec()).getTracker();
            if (tracker.isTypeDelivered(type))
                continue;
        }//from   w  w w .ja  va  2 s .  c  om

        gen.writeStartObject();
        gen.writeStringField("type", id.type.remoteId);
        if (id.object != null)
            gen.writeObjectField("object", id.object);
        if (id.name != null)
            gen.writeObjectField("name", id.name);
        if (data != null)
            gen.writeObjectField("data", data);
        gen.writeEndObject();
    }
    gen.writeEndArray();
    values.clear();
    needsFlush = false;
}

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

private void writeLineStringCoords(JsonGenerator jgen, LineString ring) throws IOException {
    jgen.writeStartArray();
    for (int i = 0; i != ring.getNumPoints(); ++i) {
        Point p = ring.getPointN(i);
        writePointCoords(jgen, p);/*from w  ww . j  a va2  s.com*/
    }
    jgen.writeEndArray();
}

From source file:javaslang.jackson.datatype.serialize.OptionSerializer.java

@Override
public void serialize(Option<?> value, JsonGenerator gen, SerializerProvider provider) throws IOException {
    if (plainMode) {
        super.serialize(value, gen, provider);
    } else {/*from w w w . ja  v  a  2 s.  c  om*/
        gen.writeStartArray();
        if (value.isDefined()) {
            gen.writeString("defined");
            super.serialize(value, gen, provider);
        } else {
            gen.writeString("undefined");
        }
        gen.writeEndArray();
    }
}

From source file:io.druid.data.input.impl.SqlFirehoseTest.java

@Before
public void setup() throws IOException {
    TEST_DIR = File.createTempFile(SqlFirehose.class.getSimpleName(), "testDir");
    FileUtils.forceDelete(TEST_DIR);//from www .j a v a2 s  .  c om
    FileUtils.forceMkdir(TEST_DIR);

    final List<Map<String, Object>> inputTexts = ImmutableList.of(
            ImmutableMap.of("x", "foostring1", "timestamp", 2000),
            ImmutableMap.of("x", "foostring2", "timestamp", 2000));
    List<FileInputStream> testFile = new ArrayList<>();
    this.objectMapper = new ObjectMapper(new SmileFactory());
    int i = 0;
    for (Map m : inputTexts) {
        File file = new File(TEST_DIR, "test_" + i++);
        try (FileOutputStream fos = new FileOutputStream(file)) {
            final JsonGenerator jg = objectMapper.getFactory().createGenerator(fos);
            jg.writeStartArray();
            jg.writeObject(m);
            jg.writeEndArray();
            jg.close();
            testFile.add(new FileInputStream(file));
        }
    }

    this.fileList = testFile;
    parser = new MapInputRowParser(new TimeAndDimsParseSpec(new TimestampSpec("timestamp", "auto", null),
            new DimensionsSpec(DimensionsSpec.getDefaultSchemas(ImmutableList.of("x")), null, null)));

    this.inputs = inputTexts;
}