Examples with JsonGenerator org.codehaus.jackson.JsonGenerator used on opensource projects

Example 11 with JsonGenerator

use of org.codehaus.jackson.JsonGenerator in project meteo by pierre.

the class StreamResource method buildJsonpResponse.

private Response buildJsonpResponse(final String attribute, final Cache<Object, Object> samples, final String callback) {
    try {
        final ByteArrayOutputStream out = new ByteArrayOutputStream();
        final JsonGenerator generator = objectMapper.getJsonFactory().createJsonGenerator(out);
        generator.writeStartObject();
        generator.writeFieldName("attribute");
        generator.writeString(attribute);
        generator.writeFieldName("samples");
        generator.writeStartArray();
        if (samples != null) {
            final ConcurrentMap<Object, Object> samplesForType = samples.asMap();
            final List<DateTime> timestamps = new ArrayList<DateTime>();
            for (final Object timestamp : samplesForType.keySet()) {
                timestamps.add((DateTime) timestamp);
            }
            Collections.sort(timestamps);
            for (final DateTime timestamp : timestamps) {
                final Object dataPoint = samplesForType.get(timestamp);
                // Might have been evicted already
                if (dataPoint != null) {
                    generator.writeNumber(unixSeconds(timestamp));
                    generator.writeObject(dataPoint);
                }
            }
        }
        generator.writeEndArray();
        generator.writeEndObject();
        generator.close();
        final JSONPObject object = new JSONPObject(callback, out.toString());
        return Response.ok(object).build();
    } catch (IOException e) {
        log.error("Error", e);
        return Response.serverError().build();
    }
}

Example 12 with JsonGenerator

use of org.codehaus.jackson.JsonGenerator in project spring-data-document-examples by spring-projects.

the class CouchDbMappingJacksonHttpMessageConverter method writeInternal.

@Override
protected void writeInternal(Object o, HttpOutputMessage outputMessage) throws IOException, HttpMessageNotWritableException {
    JsonEncoding encoding = getEncoding(outputMessage.getHeaders().getContentType());
    JsonGenerator jsonGenerator = this.objectMapper.getJsonFactory().createJsonGenerator(outputMessage.getBody(), encoding);
    try {
        if (this.prefixJson) {
            jsonGenerator.writeRaw("{} && ");
        }
        this.objectMapper.writeValue(jsonGenerator, o);
    } catch (JsonGenerationException ex) {
        throw new HttpMessageNotWritableException("Could not write JSON: " + ex.getMessage(), ex);
    }
}

Example 13 with JsonGenerator

use of org.codehaus.jackson.JsonGenerator in project spring-data-document-examples by spring-projects.

the class CouchDbMappingJacksonHttpMessageConverter method writeInternal.

@Override
protected void writeInternal(Object o, HttpOutputMessage outputMessage) throws IOException, HttpMessageNotWritableException {
    JsonEncoding encoding = getEncoding(outputMessage.getHeaders().getContentType());
    JsonGenerator jsonGenerator = this.objectMapper.getJsonFactory().createJsonGenerator(outputMessage.getBody(), encoding);
    try {
        if (this.prefixJson) {
            jsonGenerator.writeRaw("{} && ");
        }
        this.objectMapper.writeValue(jsonGenerator, o);
    } catch (JsonGenerationException ex) {
        throw new HttpMessageNotWritableException("Could not write JSON: " + ex.getMessage(), ex);
    }
}

Example 14 with JsonGenerator

use of org.codehaus.jackson.JsonGenerator in project jstorm by alibaba.

the class JSONUtil method formatMap2JSON.

/**
	 * 将map转化为json
	 * 
	 * @param map
	 * @return
	 */
public String formatMap2JSON(Map<String, Object> map) {
    StringWriter stringWriter = new StringWriter();
    String json = "";
    try {
        JsonGenerator gen = new JsonFactory().createJsonGenerator(stringWriter);
        MAPPER.writeValue(gen, map);
        gen.close();
        json = stringWriter.toString();
    } catch (Exception e) {
        LOGGER.error("", e);
    }
    return json;
}

Example 15 with JsonGenerator

use of org.codehaus.jackson.JsonGenerator in project cassandra by apache.

the class JsonTransformer method keysToJson.

public static void keysToJson(ISSTableScanner currentScanner, Stream<DecoratedKey> keys, boolean rawTime, TableMetadata metadata, OutputStream out) throws IOException {
    try (JsonGenerator json = jsonFactory.createJsonGenerator(new OutputStreamWriter(out, StandardCharsets.UTF_8))) {
        JsonTransformer transformer = new JsonTransformer(json, currentScanner, rawTime, metadata);
        json.writeStartArray();
        keys.forEach(transformer::serializePartitionKey);
        json.writeEndArray();
    }
}