Examples with JsonGenerator com.fasterxml.jackson.core.JsonGenerator used on opensource projects

Example 21 with JsonGenerator

use of com.fasterxml.jackson.core.JsonGenerator in project druid by druid-io.

the class SqlResource method doPost.

@POST
@Produces(MediaType.APPLICATION_JSON)
@Consumes(MediaType.APPLICATION_JSON)
public Response doPost(final SqlQuery sqlQuery) throws SQLException, IOException {
    // This is not integrated with the experimental authorization framework.
    // (Non-trivial since we don't know the dataSources up-front)
    final PlannerResult plannerResult;
    final DateTimeZone timeZone;
    try (final DruidPlanner planner = plannerFactory.createPlanner(sqlQuery.getContext())) {
        plannerResult = planner.plan(sqlQuery.getQuery());
        timeZone = planner.getPlannerContext().getTimeZone();
        // Remember which columns are time-typed, so we can emit ISO8601 instead of millis values.
        final List<RelDataTypeField> fieldList = plannerResult.rowType().getFieldList();
        final boolean[] timeColumns = new boolean[fieldList.size()];
        final boolean[] dateColumns = new boolean[fieldList.size()];
        for (int i = 0; i < fieldList.size(); i++) {
            final SqlTypeName sqlTypeName = fieldList.get(i).getType().getSqlTypeName();
            timeColumns[i] = sqlTypeName == SqlTypeName.TIMESTAMP;
            dateColumns[i] = sqlTypeName == SqlTypeName.DATE;
        }
        final Yielder<Object[]> yielder0 = Yielders.each(plannerResult.run());
        try {
            return Response.ok(new StreamingOutput() {

                @Override
                public void write(final OutputStream outputStream) throws IOException, WebApplicationException {
                    Yielder<Object[]> yielder = yielder0;
                    try (final JsonGenerator jsonGenerator = jsonMapper.getFactory().createGenerator(outputStream)) {
                        jsonGenerator.writeStartArray();
                        while (!yielder.isDone()) {
                            final Object[] row = yielder.get();
                            jsonGenerator.writeStartObject();
                            for (int i = 0; i < fieldList.size(); i++) {
                                final Object value;
                                if (timeColumns[i]) {
                                    value = ISODateTimeFormat.dateTime().print(Calcites.calciteTimestampToJoda((long) row[i], timeZone));
                                } else if (dateColumns[i]) {
                                    value = ISODateTimeFormat.dateTime().print(Calcites.calciteDateToJoda((int) row[i], timeZone));
                                } else {
                                    value = row[i];
                                }
                                jsonGenerator.writeObjectField(fieldList.get(i).getName(), value);
                            }
                            jsonGenerator.writeEndObject();
                            yielder = yielder.next(null);
                        }
                        jsonGenerator.writeEndArray();
                        jsonGenerator.flush();
                        // End with CRLF
                        outputStream.write('\r');
                        outputStream.write('\n');
                    } finally {
                        yielder.close();
                    }
                }
            }).build();
        } catch (Throwable e) {
            // make sure to close yielder if anything happened before starting to serialize the response.
            yielder0.close();
            throw Throwables.propagate(e);
        }
    } catch (Exception e) {
        log.warn(e, "Failed to handle query: %s", sqlQuery);
        final Exception exceptionToReport;
        if (e instanceof RelOptPlanner.CannotPlanException) {
            exceptionToReport = new ISE("Cannot build plan for query: %s", sqlQuery.getQuery());
        } else {
            exceptionToReport = e;
        }
        return Response.serverError().type(MediaType.APPLICATION_JSON_TYPE).entity(jsonMapper.writeValueAsBytes(QueryInterruptedException.wrapIfNeeded(exceptionToReport))).build();
    }
}

Example 22 with JsonGenerator

use of com.fasterxml.jackson.core.JsonGenerator in project buck by facebook.

the class AuditRulesCommand method printRulesToStdout.

private void printRulesToStdout(CommandRunnerParams params, List<Map<String, Object>> rawRules, final Predicate<String> includeType) throws IOException {
    Iterable<Map<String, Object>> filteredRules = FluentIterable.from(rawRules).filter(rawRule -> {
        String type = (String) rawRule.get(BuckPyFunction.TYPE_PROPERTY_NAME);
        return includeType.apply(type);
    });
    PrintStream stdOut = params.getConsole().getStdOut();
    if (json) {
        Map<String, Object> rulesKeyedByName = new HashMap<>();
        for (Map<String, Object> rawRule : filteredRules) {
            String name = (String) rawRule.get("name");
            Preconditions.checkNotNull(name);
            rulesKeyedByName.put(name, Maps.filterValues(rawRule, v -> shouldInclude(v)));
        }
        // We create a new JsonGenerator that does not close the stream.
        ObjectMapper mapper = params.getObjectMapper();
        JsonFactory factory = mapper.getFactory();
        try (JsonGenerator generator = factory.createGenerator(stdOut).disable(JsonGenerator.Feature.AUTO_CLOSE_TARGET).useDefaultPrettyPrinter()) {
            mapper.writeValue(generator, rulesKeyedByName);
        }
        stdOut.print('\n');
    } else {
        for (Map<String, Object> rawRule : filteredRules) {
            printRuleAsPythonToStdout(stdOut, rawRule);
        }
    }
}

Example 23 with JsonGenerator

use of com.fasterxml.jackson.core.JsonGenerator in project elasticsearch by elastic.

the class CborXContentTests method testBigInteger.

public void testBigInteger() throws Exception {
    ByteArrayOutputStream os = new ByteArrayOutputStream();
    JsonGenerator generator = new CBORFactory().createGenerator(os);
    doTestBigInteger(generator, os);
}

Example 24 with JsonGenerator

use of com.fasterxml.jackson.core.JsonGenerator in project elasticsearch by elastic.

the class SmileXContentTests method testBigInteger.

public void testBigInteger() throws Exception {
    ByteArrayOutputStream os = new ByteArrayOutputStream();
    JsonGenerator generator = new SmileFactory().createGenerator(os);
    doTestBigInteger(generator, os);
}

Example 25 with JsonGenerator

use of com.fasterxml.jackson.core.JsonGenerator in project elasticsearch by elastic.

the class YamlXContentTests method testBigInteger.

public void testBigInteger() throws Exception {
    ByteArrayOutputStream os = new ByteArrayOutputStream();
    JsonGenerator generator = new YAMLFactory().createGenerator(os);
    doTestBigInteger(generator, os);
}