Java Code Examples for com.fasterxml.jackson.databind.ObjectMapper#isEnabled()

public static void exportUsersToStream(KeycloakSession session, RealmModel realm, List<UserModel> usersToExport, ObjectMapper mapper, OutputStream os, ExportOptions options) throws IOException {
    JsonFactory factory = mapper.getFactory();
    JsonGenerator generator = factory.createGenerator(os, JsonEncoding.UTF8);
    try {
        if (mapper.isEnabled(SerializationFeature.INDENT_OUTPUT)) {
            generator.useDefaultPrettyPrinter();
        }
        generator.writeStartObject();
        generator.writeStringField("realm", realm.getName());
        // generator.writeStringField("strategy", strategy.toString());
        generator.writeFieldName("users");
        generator.writeStartArray();

        for (UserModel user : usersToExport) {
            UserRepresentation userRep = ExportUtils.exportUser(session, realm, user, options, true);
            generator.writeObject(userRep);
        }

        generator.writeEndArray();
        generator.writeEndObject();
    } finally {
        generator.close();
    }
}
 

public static void exportFederatedUsersToStream(KeycloakSession session, RealmModel realm, List<String> usersToExport, ObjectMapper mapper, OutputStream os, ExportOptions options) throws IOException {
    JsonFactory factory = mapper.getFactory();
    JsonGenerator generator = factory.createGenerator(os, JsonEncoding.UTF8);
    try {
        if (mapper.isEnabled(SerializationFeature.INDENT_OUTPUT)) {
            generator.useDefaultPrettyPrinter();
        }
        generator.writeStartObject();
        generator.writeStringField("realm", realm.getName());
        // generator.writeStringField("strategy", strategy.toString());
        generator.writeFieldName("federatedUsers");
        generator.writeStartArray();

        for (String userId : usersToExport) {
            UserRepresentation userRep = ExportUtils.exportFederatedUser(session, realm, userId, options);
            generator.writeObject(userRep);
        }

        generator.writeEndArray();
        generator.writeEndObject();
    } finally {
        generator.close();
    }
}
 

private SdkPojo readPojo(final SdkPojo pojo, JsonParser p, DeserializationContext ctxt) throws IOException {
    if (!p.isExpectedStartObjectToken()) {
        throw new JsonMappingException(p, "Expected to be in START_OBJECT got " + p.currentToken());
    }

    Map<String, SdkField<?>> fieldMap = getFields(pojo);
    JsonToken next = p.nextToken();
    ObjectMapper codec = (ObjectMapper) p.getCodec();
    while (next != JsonToken.END_OBJECT) {
        /*
         * if (next != JsonToken.FIELD_NAME) { throw new JsonMappingException(p,
         * "Expecting to get FIELD_NAME token, got " + next); }
         */
        String fieldName = p.getCurrentName();
        SdkField<?> sdkField = fieldMap.get(fieldName);
        if (sdkField == null) {
            if (codec.isEnabled(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES)) {
                throw new JsonMappingException(p, "Unknown property encountered " + fieldName);
            }
            // we need to skip this
            next = p.nextToken();
            if (next == JsonToken.START_ARRAY || next == JsonToken.START_OBJECT) {
                p.skipChildren();
            }
            // all others, just proceed to next token
            next = p.nextToken();
            continue;
        }
        // progress to next thing to read
        p.nextToken();
        // Okay we need to parse the field and set it
        Object value = readObject(sdkField, p, ctxt);
        sdkField.set(pojo, value);
        next = p.nextToken();
    }
    return pojo instanceof SdkBuilder ? (SdkPojo) ((SdkBuilder) pojo).build() : pojo;
}
 

/**
 * Create a new HalParser for a JSON document.
 * <p>
 *     The specified {@code objectMapper} is used to parse documents. If not already configured
 *     appropriately, the {@code objectMapper} is copied and configured to
 *     {@link com.fasterxml.jackson.databind.DeserializationFeature#ACCEPT_SINGLE_VALUE_AS_ARRAY accept single values as arrays}.
 * </p>
 * @param json the application/hal+json document to be parsed.
 * @param objectMapper the ObjectMapper instance used to parse documents.
 * @return HalParser instance.
 *
 * @since 2.0.0
 */
public static HalParser parse(final String json, final ObjectMapper objectMapper) {
    if (objectMapper.isEnabled(ACCEPT_SINGLE_VALUE_AS_ARRAY)) {
        return new HalParser(json, objectMapper);
    } else {
        return new HalParser(json, objectMapper
                .copy()
                .configure(ACCEPT_SINGLE_VALUE_AS_ARRAY, true));
    }
}
 

/**
 * <p>
 *     Create a Traverson that is using the given {@link Function} to resolve a Link and return a HAL+JSON document.
 * </p>
 * <p>
 *     The function will be called by the Traverson, whenever a Link must be followed. The Traverson will
 *     take care of URI templates (templated links), so the implementation of the function can rely on the
 *     Link parameter to be not {@link Link#isTemplated() templated}.
 * </p>
 * <p>
 *     Typical implementations of the Function will rely on some HTTP client. Especially in this case,
 *     the function should take care of the link's {@link Link#getType() type} and {@link Link#getProfile()},
 *     so the proper HTTP Accept header is used.
 * </p>
 *
 * @param linkResolver A function that gets a Link of a resource and returns a HAL+JSON document.
 * @param objectMapper The ObjectMapper instance used to parse documents.
 * @return Traverson
 *
 * @since 2.0.0
 */
public static Traverson traverson(final LinkResolver linkResolver,
                                  final ObjectMapper objectMapper) {
    if (objectMapper.isEnabled(ACCEPT_SINGLE_VALUE_AS_ARRAY)) {
        return new Traverson(linkResolver, objectMapper);
    } else {
        return new Traverson(linkResolver, objectMapper
                .copy()
                .configure(ACCEPT_SINGLE_VALUE_AS_ARRAY, true));
    }
}