Example usage for com.fasterxml.jackson.databind ObjectMapper readValue

List of usage examples for com.fasterxml.jackson.databind ObjectMapper readValue

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Introduction

In this page you can find the example usage for com.fasterxml.jackson.databind ObjectMapper readValue.

Prototype

@SuppressWarnings("unchecked")
    public <T> T readValue(byte[] src, JavaType valueType)
            throws IOException, JsonParseException, JsonMappingException

Source Link

Usage

From source file:eu.europa.ec.fisheries.uvms.spatial.service.util.MapConfigHelper.java

public static Map<String, ReferenceDataPropertiesDto> getReferenceDataSettings(String referenceData)
        throws ServiceException {
    if (referenceData == null) {
        return null;
    }/*www  .j  av a 2s.co m*/
    try {
        ObjectMapper mapper = new ObjectMapper();
        mapper.configure(DeserializationFeature.ACCEPT_SINGLE_VALUE_AS_ARRAY, true);
        Object obj = mapper.readValue(referenceData, Map.class);
        String jsonString = mapper.writeValueAsString(obj);
        return mapper.readValue(jsonString, TypeFactory.defaultInstance().constructMapType(Map.class,
                String.class, ReferenceDataPropertiesDto.class));

    } catch (IOException e) {
        throw new ServiceException("Parse Exception from Json to Object", e);
    }
}

From source file:eu.trentorise.opendata.commons.test.jackson.TodJacksonTester.java

/**
 * Tests that the provided object can be converted to json and reconstructed
 * as type T. Also logs the json with the provided logger at FINE level.
 *
 * @return the reconstructed object//  w w  w. j  a v a  2  s .  co m
 */
public static <T> T testJsonConv(ObjectMapper om, Logger logger, @Nullable Object obj, Class<T> targetClass) {

    checkNotNull(om);
    checkNotNull(logger);

    T recObj;

    String json;

    try {
        json = om.writeValueAsString(obj);
        logger.log(Level.FINE, "json = {0}", json);
    } catch (Exception ex) {
        throw new RuntimeException("FAILED SERIALIZING!", ex);
    }
    try {
        Object ret = om.readValue(json, targetClass);
        recObj = (T) ret;
    } catch (Exception ex) {
        throw new RuntimeException("FAILED DESERIALIZING!", ex);
    }

    assertEquals(obj, recObj);
    return recObj;
}

From source file:com.spotify.heroic.shell.Tasks.java

public static Series parseSeries(final ObjectMapper mapper, final Optional<String> series) {
    return series.<Series>map(s -> {
        try {//from   w ww .ja v  a 2  s . c o  m
            return mapper.readValue(s, Series.class);
        } catch (IOException e) {
            throw new RuntimeException("Bad series: " + s, e);
        }
    }).orElseGet(Series::empty);
}

From source file:de.undercouch.actson.JsonParserTest.java

/**
 * Assert that two JSON objects are equal
 * @param expected the expected JSON object
 * @param actual the actual JSON object/*from ww w  .jav a2  s .c  om*/
 */
private static void assertJsonObjectEquals(String expected, String actual) {
    ObjectMapper mapper = new ObjectMapper();
    TypeReference<Map<String, Object>> ref = new TypeReference<Map<String, Object>>() {
    };
    try {
        Map<String, Object> em = mapper.readValue(expected, ref);
        Map<String, Object> am = mapper.readValue(actual, ref);
        assertEquals(em, am);
    } catch (IOException e) {
        throw new IllegalStateException(e);
    }
}

From source file:com.twosigma.beaker.table.serializer.TableDisplayDeSerializer.java

public static Pair<String, Object> getDeserializeObject(BeakerObjectConverter parent, JsonNode n,
        ObjectMapper mapper) {
    Object o = null;/*from   w w  w . j  a  va 2  s  . co m*/
    String subtype = null;
    try {
        List<List<?>> values = TableDisplayDeSerializer.getValues(parent, n, mapper);
        List<String> columns = TableDisplayDeSerializer.getColumns(n, mapper);
        List<String> classes = TableDisplayDeSerializer.getClasses(n, mapper);

        if (n.has("subtype"))
            subtype = mapper.readValue(n.get("subtype").asText(), String.class);

        if (subtype != null && subtype.equals(TableDisplay.DICTIONARY_SUBTYPE)) {
            o = getValuesAsDictionary(parent, n, mapper);
        } else if (subtype != null && subtype.equals(TableDisplay.LIST_OF_MAPS_SUBTYPE) && columns != null
                && values != null) {
            o = getValuesAsRows(parent, n, mapper);
        } else if (subtype != null && subtype.equals(TableDisplay.MATRIX_SUBTYPE)) {
            o = getValuesAsMatrix(parent, n, mapper);
        }
        if (o == null) {
            if (n.has("hasIndex") && mapper.readValue(n.get("hasIndex").asText(), String.class).equals("true")
                    && columns != null && values != null) {
                columns.remove(0);
                classes.remove(0);
                for (List<?> v : values) {
                    v.remove(0);
                }
                o = new TableDisplay(values, columns, classes);
            } else {
                o = new TableDisplay(values, columns, classes);
            }
        }
    } catch (Exception e) {
        logger.error("exception deserializing TableDisplay ", e);
    }
    return new ImmutablePair<String, Object>(subtype, o);
}

From source file:it.uniroma2.sag.kelp.linearization.nystrom.NystromMethod.java

/**
 * Load a Nystrom-based projection function from a file
 * //from   www  .  ja  v  a 2  s.  com
 * @param inputFilePath
 *            the input file
 * @return Nystrom-based projection function
 * @throws FileNotFoundException
 * @throws IOException
 */
public static NystromMethod load(String inputFilePath) throws FileNotFoundException, IOException {
    ObjectMapper mapper = new ObjectMapper();
    InputStreamReader inS = new InputStreamReader(FileUtils.createInputStream(inputFilePath), "utf8");
    NystromMethod readValue = mapper.readValue(inS, NystromMethod.class);
    inS.close();
    return readValue;
}

From source file:edu.usu.sdl.openstorefront.common.util.StringProcessor.java

/**
 * Remove all json fields not in the list to keep.
 *
 * @param json/*from  w  w w. ja v  a 2s.  c o m*/
 * @param fieldsToKeep
 * @return
 */
public static String stripeFieldJSON(String json, Set<String> fieldsToKeep) {
    ObjectMapper mapper = defaultObjectMapper();

    try {
        JsonNode rootNode = mapper.readTree(json);
        processNode(rootNode, fieldsToKeep);

        Object jsonString = mapper.readValue(rootNode.toString(), Object.class);
        return mapper.writerWithDefaultPrettyPrinter().writeValueAsString(jsonString);
    } catch (IOException ex) {
        throw new OpenStorefrontRuntimeException(ex);
    }
}

From source file:io.coala.json.JsonUtil.java

/**
 * @param om the {@link ObjectMapper} used to parse/deserialize/unmarshal
 * @param json the JSON formatted {@link String} value
 * @param resultType the type of result {@link Object}
 * @param imports the {@link Properties} instances for default values, etc.
 * @return the parsed/deserialized/unmarshalled {@link Object}
 *//*from  ww  w  . j  av  a 2s  . c  o  m*/
public static <T> T valueOf(final ObjectMapper om, final String json, final Class<T> resultType,
        final Properties... imports) {
    if (json == null || json.equalsIgnoreCase("null"))
        return null;
    try {
        return (T) om.readValue(
                !json.startsWith("\"") && resultType == String.class ? "\"" + json + "\"" : json,
                checkRegistered(om, resultType, imports));
    } catch (final Throwable e) {
        return Thrower.rethrowUnchecked(e);
    }
}

From source file:org.forgerock.openig.util.Json.java

private static <T> T parse(ObjectMapper mapper, Reader reader) throws IOException {
    if (reader == null) {
        return null;
    }//  w w w  .j  ava2  s  .c  o m

    final JsonParser jp = mapper.getFactory().createParser(reader);
    final JsonToken jToken = jp.nextToken();
    if (jToken != null) {
        switch (jToken) {
        case START_ARRAY:
            return mapper.readValue(jp, new TypeReference<LinkedList<?>>() {
            });
        case START_OBJECT:
            return mapper.readValue(jp, new TypeReference<LinkedHashMap<String, ?>>() {
            });
        case VALUE_FALSE:
        case VALUE_TRUE:
            return mapper.readValue(jp, new TypeReference<Boolean>() {
            });
        case VALUE_NUMBER_INT:
            return mapper.readValue(jp, new TypeReference<Integer>() {
            });
        case VALUE_NUMBER_FLOAT:
            return mapper.readValue(jp, new TypeReference<Float>() {
            });
        case VALUE_NULL:
            return null;
        default:
            // This is very unlikely to happen.
            throw new IOException("Invalid JSON content");
        }
    }
    return null;
}

From source file:com.google.openrtb.json.OpenRtbJsonTest.java

private static String cleanupIdField(final String jsonString) throws IOException {
    ObjectMapper mapper = new ObjectMapper();
    ObjectNode json = mapper.readValue(jsonString, ObjectNode.class);
    json.put("id", "1");
    return mapper.writerWithDefaultPrettyPrinter().writeValueAsString(json);
}