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

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

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Introduction

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

Prototype

public JsonNode readTree(URL source) throws IOException, JsonProcessingException

Source Link

Document

Method to deserialize JSON content as tree expressed using set of JsonNode instances.

Usage

From source file:org.opendaylight.sfc.sbrest.json.SfstExporterTest.java

private boolean testExportSfstJson(String expectedResultFile, boolean nameOnly) throws IOException {
    ServiceFunctionSchedulerType serviceFunctionSchedulerType;
    String exportedSfstString;//from  w  w w . j  a va 2  s  .co  m
    SfstExporterFactory sfstExporterFactory = new SfstExporterFactory();

    if (nameOnly) {
        serviceFunctionSchedulerType = this.buildServiceFunctionSchedulerTypeNameOnly();
        exportedSfstString = sfstExporterFactory.getExporter().exportJsonNameOnly(serviceFunctionSchedulerType);
    } else {
        serviceFunctionSchedulerType = this.buildServiceFunctionSchedulerType();
        exportedSfstString = sfstExporterFactory.getExporter().exportJson(serviceFunctionSchedulerType);
    }

    ObjectMapper objectMapper = new ObjectMapper();
    JsonNode expectedSfstJson = objectMapper
            .readTree(this.gatherServiceFunctionSchedulerTypeJsonStringFromFile(expectedResultFile));
    JsonNode exportedSfstJson = objectMapper.readTree(exportedSfstString);

    return expectedSfstJson.equals(exportedSfstJson);
}

From source file:com.comcast.cdn.traffic_control.traffic_router.core.external.CoverageZoneTest.java

@Test
public void itGetsCacheLocation() throws Exception {
    HttpGet httpGet = new HttpGet(
            "http://localhost:3333/crs/coveragezone/cachelocation?ip=100.3.3.123&deliveryServiceId=steering-target-1");

    CloseableHttpResponse response = null;
    try {/* www.  ja va2  s  .co m*/
        response = closeableHttpClient.execute(httpGet);
        String jsonString = EntityUtils.toString(response.getEntity());
        ObjectMapper objectMapper = new ObjectMapper(new JsonFactory());
        JsonNode jsonNode = objectMapper.readTree(jsonString);

        assertThat(jsonNode.get("id").asText(), equalTo("location-3"));
        assertThat(jsonNode.get("geolocation"), not(nullValue()));
        assertThat(jsonNode.get("caches").get(0).get("id").asText(), startsWith("edge-cache-03"));
        assertThat(jsonNode.get("caches").get(0).get("fqdn").asText(), startsWith("edge-cache-03"));
        assertThat(jsonNode.get("caches").get(0).get("fqdn").asText(), endsWith("thecdn.example.com"));
        assertThat(jsonNode.get("caches").get(0).get("port").asInt(), greaterThan(1024));
        assertThat(jsonNode.get("caches").get(0).get("hashValues").get(0).asDouble(), greaterThan(1.0));
        assertThat(isValidIpV4String(jsonNode.get("caches").get(0).get("ip4").asText()), equalTo(true));
        assertThat(jsonNode.get("caches").get(0).get("ip6").asText(), not(equalTo("")));
        assertThat(jsonNode.get("caches").get(0).has("available"), equalTo(true));
        assertThat(jsonNode.has("properties"), equalTo(true));
    } finally {
        if (response != null)
            response.close();
    }
}

From source file:com.stratio.ingestion.source.rest.url.DynamicUrlHandler.java

private JsonNode loadConfiguration(String jsonFile) {
    JsonNode jsonNode = null;//from  w  w  w.  ja  v a 2 s. c o  m
    if (StringUtils.isNotBlank(jsonFile)) {
        try {
            File filterFile = new File(jsonFile);
            if (filterFile.exists()) {
                ObjectMapper mapper = new ObjectMapper();
                jsonNode = mapper.readTree(filterFile);
            } else {
                throw new RestSourceException("The configuration file doesn't exist");
            }
        } catch (Exception e) {
            throw new RestSourceException("An error ocurred while json parsing. Verify configuration  file", e);
        }
    }
    return jsonNode;
}

From source file:de.upb.wdqa.wdvd.datamodel.oldjson.jackson.deserializers.OldJacksonSnakDeserializer.java

@Override
public OldJacksonSnak deserialize(JsonParser p, DeserializationContext ctxt)
        throws IOException, JsonProcessingException {
    OldJacksonSnak result = null;//from  w  w w  .  j a  va2 s. c  o  m

    if (!p.getCurrentToken().equals(JsonToken.START_ARRAY)) {
        logger.warn("Token " + JsonToken.START_ARRAY + " expected");
    }

    p.nextToken();
    String type = p.getText();
    p.nextToken();

    // determine type
    if (type.equals("value")) {
        OldJacksonValueSnak valuesnak = new OldJacksonValueSnak();
        valuesnak.setProperty("P" + p.getIntValue());
        p.nextToken();
        valuesnak.setDatatype(p.getText());
        p.nextToken();

        ObjectMapper mapper = (ObjectMapper) p.getCodec();
        JsonNode root = mapper.readTree(p);
        Class<? extends OldJacksonValue> valueClass = getValueClass(valuesnak.getDatatype());
        if (valueClass != null) {
            valuesnak.setDatavalue(mapper.treeToValue(root, valueClass));
        }

        p.nextToken();

        result = valuesnak;
    } else if (type.equals("novalue")) {
        result = new OldJacksonNoValueSnak();
        result.setProperty("P" + p.getIntValue());
        p.nextToken();
    } else if (type.equals("somevalue")) {
        result = new OldJacksonSomeValueSnak();
        result.setProperty("P" + p.getIntValue());
        p.nextToken();
    } else {
        logger.warn("Unknown value type: " + type);
    }

    if (!p.getCurrentToken().equals(JsonToken.END_ARRAY)) {
        logger.warn("Token " + JsonToken.END_ARRAY + " expected");
    }

    return result;
}

From source file:com.comcast.cdn.traffic_control.traffic_router.core.external.CoverageZoneTest.java

@Test
public void itGetsCaches() throws Exception {
    HttpGet httpGet = new HttpGet(
            "http://localhost:3333/crs/coveragezone/caches?deliveryServiceId=steering-target-4&cacheLocationId=location-3");

    CloseableHttpResponse response = null;
    try {//from   w  w  w  .  j a  va2s .c  o m
        response = closeableHttpClient.execute(httpGet);
        assertThat(response.getStatusLine().getStatusCode(), equalTo(200));

        ObjectMapper objectMapper = new ObjectMapper(new JsonFactory());
        JsonNode jsonNode = objectMapper.readTree(EntityUtils.toString(response.getEntity()));

        assertThat(jsonNode.isArray(), equalTo(true));
        JsonNode cacheNode = jsonNode.get(0);
        assertThat(cacheNode.get("id").asText(), not(nullValue()));
        assertThat(cacheNode.get("fqdn").asText(), not(nullValue()));
        assertThat(cacheNode.get("ip4").asText(), not(nullValue()));
        assertThat(cacheNode.get("ip6").asText(), not(nullValue()));
        // If the value is null or otherwise not an int we'll get back -123456, so any other value returned means success
        assertThat(cacheNode.get("port").asInt(-123456), not(equalTo(-123456)));
        assertThat(cacheNode.get("deliveryServices").isArray(), equalTo(true));
        assertThat(cacheNode.get("hashValues").get(0).asDouble(-1024.1024), not(equalTo(-1024.1024)));
        assertThat(cacheNode.get("available").asText(), anyOf(equalTo("true"), equalTo("false")));
    } finally {
        if (response != null)
            response.close();
    }
}

From source file:de.fraunhofer.iosb.ilt.sta.deserialize.custom.CustomEntityDeserializer.java

@Override
public T deserialize(JsonParser parser, DeserializationContext ctxt)
        throws IOException, JsonProcessingException {
    Entity result;/*from   ww w.  j a v a  2  s  .co  m*/
    try {
        result = clazz.newInstance();
    } catch (InstantiationException | IllegalAccessException ex) {
        throw new IOException("Error deserializing JSON!");
    }
    // need to make subclass of this class for every Entity subclass with custom field to get expected class!!!
    BeanDescription beanDescription = ctxt.getConfig().introspect(ctxt.constructType(clazz));
    ObjectMapper mapper = (ObjectMapper) parser.getCodec();
    JsonNode obj = (JsonNode) mapper.readTree(parser);
    List<BeanPropertyDefinition> properties = beanDescription.findProperties();
    Iterator<Map.Entry<String, JsonNode>> i = obj.fields();

    // First check if we know all properties that are present.
    if (ctxt.isEnabled(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES)) {
        for (; i.hasNext();) {
            Map.Entry<String, JsonNode> next = i.next();
            String fieldName = next.getKey();
            JsonNode field = next.getValue();
            Optional<BeanPropertyDefinition> findFirst = properties.stream()
                    .filter(p -> p.getName().equals(fieldName)).findFirst();
            if (!findFirst.isPresent()) {
                throw new UnrecognizedPropertyException(parser, "Unknown field: " + fieldName,
                        parser.getCurrentLocation(), clazz, fieldName, null);
            }
        }
    }

    for (BeanPropertyDefinition classProperty : properties) {
        if (obj.has(classProperty.getName())) {
            // property is present in class and json
            Annotation annotation = classProperty.getAccessor().getAnnotation(CustomSerialization.class);
            if (annotation != null) {
                // property has custom annotation
                // check if encoding property is also present in json (and also in class itself for sanity reasons)
                CustomSerialization customAnnotation = (CustomSerialization) annotation;
                Optional<BeanPropertyDefinition> encodingClassProperty = properties.stream()
                        .filter(p -> p.getName().equals(customAnnotation.encoding())).findFirst();
                if (!encodingClassProperty.isPresent()) {
                    throw new IOException("Error deserializing JSON as class '" + clazz.toString() + "' \n"
                            + "Reason: field '" + customAnnotation.encoding()
                            + "' specified by annotation as encoding field is not defined in class!");
                }
                String customEncoding = null;
                if (obj.has(customAnnotation.encoding())) {
                    customEncoding = obj.get(customAnnotation.encoding()).asText();
                }
                Object customDeserializedValue = CustomDeserializationManager.getInstance()
                        .getDeserializer(customEncoding)
                        .deserialize(mapper.writeValueAsString(obj.get(classProperty.getName())));
                classProperty.getMutator().setValue(result, customDeserializedValue);
            } else {
                // TODO type identificatin is not safe beacuase may ne be backed by field. Rather do multiple checks
                Object value = mapper.readValue(mapper.writeValueAsString(obj.get(classProperty.getName())),
                        classProperty.getField().getType());
                classProperty.getMutator().setValue(result, value);
            }
        }
    }
    return (T) result;
}

From source file:architecture.ee.web.community.social.facebook.FacebookServiceProvider.java

public java.util.List<Post> getHomeFeed(int offset, int limit) {
    Token accessToken = getAccessToken(getAccessToken(), "");
    OAuthRequest request = new OAuthRequest(Verb.GET, GRAPH_API_URL + "me/home");
    request.addBodyParameter("offset", String.valueOf(offset));
    request.addBodyParameter("limit", String.valueOf(limit));
    getOAuthService().signRequest(accessToken, request);
    Response response = request.send();

    List<Post> posts;/* ww w .  j  av a 2  s  .  co m*/
    try {
        ObjectMapper mapper = getObjectMapper();
        JsonNode dataNode = mapper.readTree(response.getBody());
        JsonNode dataNode2 = dataNode.get("data");
        posts = new ArrayList<Post>();
        for (Iterator<JsonNode> iterator = dataNode2.iterator(); iterator.hasNext();) {
            JsonNode node = iterator.next();
            posts.add(deserializePost(mapper, null, Post.class, (ObjectNode) node));
        }
    } catch (Exception e) {
        return Collections.EMPTY_LIST;
    }

    return posts;
}

From source file:com.twosigma.beakerx.kernel.MagicKernelManager.java

private Message parseMessage(String stringJson) throws IOException {
    ObjectMapper mapper = new ObjectMapper();
    JsonNode json = mapper.readTree(stringJson);
    Message msg = new Message(mapper.convertValue(json.get("header"), Header.class));
    msg.setContent(mapper.convertValue(json.get("content"), Map.class));
    msg.setMetadata(mapper.convertValue(json.get("metadata"), Map.class));
    msg.setBuffers(mapper.convertValue(json.get("buffers"), List.class));
    List<byte[]> identities = mapper.convertValue(json.get("comm_id"), List.class);
    msg.setIdentities(identities == null ? new ArrayList<>() : identities);
    return msg;// ww  w.ja  v  a 2s.  c om
}

From source file:io.orchestrate.client.KvListOperation.java

/** {@inheritDoc} */
@Override/*from   ww w  .j a  va 2s.  c om*/
@SuppressWarnings("unchecked")
KvList<T> fromResponse(final int status, final HttpHeader httpHeader, final String json,
        final JacksonMapper mapper) throws IOException {
    assert (status == 200);

    final ObjectMapper objectMapper = mapper.getMapper();
    final JsonNode jsonNode = objectMapper.readTree(json);

    final String next = (jsonNode.has("next")) ? jsonNode.get("next").asText() : null;
    final int count = jsonNode.get("count").asInt();
    final List<KvObject<T>> results = new ArrayList<KvObject<T>>(count);

    final Iterator<JsonNode> iter = jsonNode.get("results").elements();
    while (iter.hasNext()) {
        results.add(jsonToKvObject(objectMapper, iter.next(), clazz));
    }

    return new KvList<T>(results, count, next);
}

From source file:com.github.iexel.fontus.web.test.SpringMvcIntegrationTest.java

/**
 * Test the external web service./*w  w  w .j  av  a 2  s .  c o m*/
 */
@Test
public void testRestService() throws Exception {

    MockHttpServletRequestBuilder m;
    ResultActions r;

    // Create a new record
    m = post("/rest/products");
    m.contentType(MediaType.APPLICATION_JSON);
    m.accept(MediaType.APPLICATION_JSON);
    m.content("{\"name\":\"A record created by automated test\", \"price\":10.00, \"version\":0}");
    r = this.mockMvc.perform(m);
    r.andDo(print());
    r.andExpect(status().isOk());

    // Get the new record's id and version with Jackson
    MvcResult result = r.andReturn();
    String resultStr = result.getResponse().getContentAsString();
    ObjectMapper mapper = new ObjectMapper();
    JsonNode rootNode = mapper.readTree(resultStr);
    JsonNode nameNode = rootNode.path("id");
    int id = nameNode.asInt();
    JsonNode versionNode = rootNode.path("version");
    String version = versionNode.asText();

    // Update the new record
    m = put("/rest/products/" + id);
    m.contentType(MediaType.APPLICATION_JSON);
    m.accept(MediaType.APPLICATION_JSON);
    m.content("{\"name\":\"Updated by automated test\", \"price\":20.00, \"version\":" + version + "}");
    r = this.mockMvc.perform(m);
    r.andDo(print());
    r.andExpect(status().isOk());

    // Get all records, and check that the new record is present and contains correct data
    m = get("/rest/products?rows=100&page=1&sidx=id&sord=asc");
    m.accept(MediaType.APPLICATION_JSON);
    r = this.mockMvc.perform(m);
    r.andDo(print());
    r.andExpect(status().isOk());
    r.andExpect(jsonPath("$.page", equalTo(1)));
    // ?(@.id==8) - select all rows with id=8, and [0] - get the first of these rows
    r.andExpect(jsonPath("$.rows[?(@.id==" + id + ")][0].name", equalTo("Updated by automated test")));

    // Delete the test record
    m = delete("/rest/products/" + id);
    m.contentType(MediaType.APPLICATION_JSON);
    m.accept(MediaType.APPLICATION_JSON);
    m.content("{\"version\":1}"); // the version after the update should be 1
    r = this.mockMvc.perform(m);
    r.andDo(print());
    r.andExpect(status().isOk());
}