Example usage for com.fasterxml.jackson.databind.node NullNode instance

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In this page you can find the example usage for com.fasterxml.jackson.databind.node NullNode instance.

Prototype

NullNode instance

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Usage

From source file:com.turn.shapeshifter.AutoSerializer.java

/**
 * Returns the JSON representation of the value of a message's field.
 *
 * @param value the value to represent in JSON
 * @param field the descriptor of the value's field.
 * @param schemas a container for object schemas to use for formatting
 * fields that refer to other messages//from   w  w w.j a  va  2s.com
 * @throws SerializationException
 */
private JsonNode serializeValue(Object value, FieldDescriptor field, ReadableSchemaRegistry registry)
        throws SerializationException {
    JsonNode valueNode = NullNode.instance;
    switch (field.getType()) {
    case BOOL:
        valueNode = BooleanNode.valueOf((Boolean) value);
        break;
    case BYTES:
        break;
    case DOUBLE:
        valueNode = new DoubleNode((Double) value);
        break;
    case ENUM:
        EnumValueDescriptor enumValueDescriptor = (EnumValueDescriptor) value;
        String enumValue = enumValueDescriptor.getName();
        String convertedValue = AutoSchema.PROTO_ENUM_CASE_FORMAT.to(AutoSchema.JSON_ENUM_CASE_FORMAT,
                enumValue);
        valueNode = new TextNode(convertedValue);
        break;
    case FLOAT:
        valueNode = new DoubleNode((Float) value);
        break;
    case GROUP:
        break;
    case FIXED32:
    case INT32:
    case SFIXED32:
    case SINT32:
    case UINT32:
        valueNode = new IntNode((Integer) value);
        break;
    case FIXED64:
    case INT64:
    case SFIXED64:
    case SINT64:
    case UINT64:
        valueNode = new LongNode((Long) value);
        break;
    case MESSAGE:
        Message messageValue = (Message) value;
        try {
            valueNode = registry.get(messageValue.getDescriptorForType()).getSerializer()
                    .serialize(messageValue, registry);
            valueNode = valueNode.size() == 0 ? NullNode.instance : valueNode;
        } catch (SchemaObtentionException soe) {
            throw new SerializationException(soe);
        }
        break;
    case STRING:
        valueNode = new TextNode((String) value);
        break;
    default:
        break;
    }
    return valueNode;
}

---

From source file:com.ikanow.aleph2.data_model.utils.TestJsonUtils.java

@Test
public void test_jacksonToJava() {

    assertEquals(Arrays.asList("test"),
            JsonUtils.jacksonToJava(JsonUtils._mapper.convertValue(Arrays.asList("test"), JsonNode.class)));
    assertEquals(new String(new byte[] { (byte) 0xFF, (byte) 0xFE }),
            new String((byte[]) JsonUtils.jacksonToJava(
                    JsonUtils._mapper.convertValue(new byte[] { (byte) 0xFF, (byte) 0xFE }, JsonNode.class))));
    assertEquals(true, JsonUtils.jacksonToJava(JsonUtils._mapper.convertValue(true, JsonNode.class)));
    assertEquals(false, JsonUtils.jacksonToJava(JsonUtils._mapper.convertValue(false, JsonNode.class)));
    assertEquals(1L, JsonUtils.jacksonToJava(JsonUtils._mapper.convertValue(1L, JsonNode.class)));
    assertEquals(2.0, (double) JsonUtils.jacksonToJava(JsonUtils._mapper.convertValue(2.0, JsonNode.class)),
            0.00001);/*from   w ww  .j a v  a  2  s .  c o  m*/
    assertEquals(Collections.emptyMap(), JsonUtils.jacksonToJava(JsonUtils._mapper.createObjectNode()));
    assertEquals(TestBean.class, JsonUtils.jacksonToJava(new POJONode(new TestBean())).getClass());
    assertEquals("test", JsonUtils.jacksonToJava(JsonUtils._mapper.convertValue("test", JsonNode.class)));
    assertEquals(null, JsonUtils.jacksonToJava(NullNode.instance));
}

---

From source file:com.turn.shapeshifter.SchemaSerializer.java

/**
 * Returns the JSON representation of the value of a message's field.
 *
 * @param value the value to represent in JSON
 * @param field the descriptor of the value's field.
 * @param schemas a container for object schemas to use for formatting fields that refer to
 *                  other messages/*  ww  w . jav a 2s.c o m*/
 * @throws SerializationException
 */
private JsonNode serializeValue(Object value, FieldDescriptor field, ReadableSchemaRegistry schemas)
        throws SerializationException {
    JsonNode valueNode = NullNode.instance;
    if (schema.getTransforms().containsKey(field.getName())) {
        return schema.getTransforms().get(field.getName()).serialize(value);
    }
    switch (field.getType()) {
    case BOOL:
        valueNode = BooleanNode.valueOf((Boolean) value);
        break;
    case BYTES:
        break;
    case DOUBLE:
        valueNode = new DoubleNode((Double) value);
        break;
    case ENUM:
        EnumValueDescriptor enumValueDescriptor = (EnumValueDescriptor) value;
        String enumValue = NamedSchema.PROTO_ENUM_CASE_FORMAT.to(schema.getEnumCaseFormat(),
                enumValueDescriptor.getName());
        valueNode = new TextNode(enumValue);
        break;
    case FLOAT:
        valueNode = new DoubleNode((Float) value);
        break;
    case GROUP:
        break;
    case FIXED32:
    case INT32:
    case SFIXED32:
    case SINT32:
    case UINT32:
        valueNode = new IntNode((Integer) value);
        break;
    case FIXED64:
    case INT64:
    case SFIXED64:
    case SINT64:
    case UINT64:
        valueNode = new LongNode((Long) value);
        break;
    case MESSAGE:
        Message messageValue = (Message) value;
        Schema subSchema = null;
        if (schema.getSubObjectsSchemas().containsKey(field.getName())) {
            String schemaName = schema.getSubObjectsSchemas().get(field.getName());
            if (schemas.contains(schemaName)) {
                subSchema = schemas.get(schemaName);
            } else {
                throw new IllegalStateException();
            }
        } else {
            try {
                subSchema = schemas.get(field.getMessageType());
            } catch (SchemaObtentionException soe) {
                throw new SerializationException(soe);
            }
        }
        valueNode = subSchema.getSerializer().serialize(messageValue, schemas);
        break;
    case STRING:
        valueNode = new TextNode((String) value);
        break;
    default:
        break;
    }
    return valueNode;
}

---

From source file:org.wisdom.wamp.WampControllerPubSubTest.java

/**
 * Use the following PUBLISH message format: [TYPE, URI, Event]
 * @throws RegistryException/*w  w  w .  j a va  2 s . c  o  m*/
 */
@Test
public void testPublicationAndReception() throws RegistryException {
    clear();
    Json json = new JsonService();
    WampController controller = createWampControllerAndConnectClient(json);

    controller.open("id2");
    clear();

    // client 1 subscribes to a topic
    clear();
    ArrayNode msg = json.newArray();
    msg.add(MessageType.SUBSCRIBE.code());
    msg.add("http://example.com:9001/wamp/topic");
    controller.onMessage(CLIENT_ID, msg);

    // client 2 send an event on the topic, client 2 is not a subscriber of the topic

    // Simple payload
    clear();
    msg = json.newArray();
    msg.add(MessageType.PUBLISH.code());
    msg.add("http://example.com:9001/wamp/topic");
    msg.add("hello");
    controller.onMessage("id2", msg);

    assertThat(message).isNotNull();
    JsonNode node = json.parse(last());
    assertThat(node.isArray());
    assertThat(node.get(0).asInt()).isEqualTo(MessageType.EVENT.code());
    assertThat(node.get(1).asText()).isEqualTo("http://example.com:9001/wamp/topic");
    assertThat(node.get(2).asText()).isEqualTo("hello");

    // Null payload
    clear();
    msg = json.newArray();
    msg.add(MessageType.PUBLISH.code());
    msg.add("http://example.com:9001/wamp/topic");
    msg.add(NullNode.instance);
    controller.onMessage("id2", msg);

    assertThat(message).isNotNull();
    node = json.parse(last());
    assertThat(node.isArray());
    assertThat(node.get(0).asInt()).isEqualTo(MessageType.EVENT.code());
    assertThat(node.get(1).asText()).isEqualTo("http://example.com:9001/wamp/topic");
    assertThat(node.get(2).isNull()).isTrue();

    // Complex payload
    clear();
    msg = json.newArray();
    msg.add(MessageType.PUBLISH.code());
    msg.add("http://example.com:9001/wamp/topic");
    Struct reference = new Struct("hi", 1000, true, new String[] { "a", "b" });
    msg.add(json.toJson(reference));
    controller.onMessage("id2", msg);

    assertThat(message).isNotNull();
    node = json.parse(last());
    assertThat(node.isArray());
    assertThat(node.get(0).asInt()).isEqualTo(MessageType.EVENT.code());
    assertThat(node.get(1).asText()).isEqualTo("http://example.com:9001/wamp/topic");
    assertThat(json.fromJson(node.get(2), Struct.class)).isEqualTo(reference);
}

---

From source file:com.turn.shapeshifter.NamedSchemaSerializer.java

/**
 * Returns the JSON representation of the value of a message's field.
 *
 * @param value the value to represent in JSON
 * @param field the descriptor of the value's field.
 * @param schemas a container for object schemas to use for formatting
 * fields that refer to other messages//from ww  w.ja v a2 s .c o m
 * @throws SerializationException
 */
private JsonNode serializeValue(Object value, FieldDescriptor field, ReadableSchemaRegistry schemas)
        throws SerializationException {
    JsonNode valueNode = NullNode.instance;
    if (schema.getTransforms().containsKey(field.getName())) {
        return schema.getTransforms().get(field.getName()).serialize(value);
    }
    switch (field.getType()) {
    case BOOL:
        valueNode = BooleanNode.valueOf((Boolean) value);
        break;
    case BYTES:
        byte[] bytes = ((ByteString) value).toByteArray();
        String content = new String();
        for (int i = 0; i < bytes.length; i++) {
            content += (char) bytes[i];
        }
        valueNode = TextNode.valueOf(content);
        break;
    case DOUBLE:
        valueNode = new DoubleNode((Double) value);
        break;
    case ENUM:
        EnumValueDescriptor enumValueDescriptor = (EnumValueDescriptor) value;
        String enumValue = NamedSchema.PROTO_ENUM_CASE_FORMAT.to(schema.getEnumCaseFormat(),
                enumValueDescriptor.getName());
        valueNode = new TextNode(enumValue);
        break;
    case FLOAT:
        valueNode = new DoubleNode((Float) value);
        break;
    case GROUP:
        break;
    case FIXED32:
    case INT32:
    case SFIXED32:
    case SINT32:
    case UINT32:
        valueNode = new IntNode((Integer) value);
        break;
    case FIXED64:
    case INT64:
    case SFIXED64:
    case SINT64:
    case UINT64:
        valueNode = schema.getSurfaceLongsAsStrings() ? new TextNode(((Long) value).toString())
                : new LongNode((Long) value);
        break;
    case MESSAGE:
        Message messageValue = (Message) value;
        Schema subSchema = null;
        if (schema.getSubObjectsSchemas().containsKey(field.getName())) {
            String schemaName = schema.getSubObjectsSchemas().get(field.getName());
            if (schemas.contains(schemaName)) {
                subSchema = schemas.get(schemaName);
            } else {
                throw new IllegalStateException();
            }
        } else {
            try {
                subSchema = schemas.get(field.getMessageType());
            } catch (SchemaObtentionException soe) {
                throw new SerializationException(soe);
            }
        }
        valueNode = subSchema.getSerializer().serialize(messageValue, schemas);
        valueNode = valueNode.size() == 0 ? NullNode.instance : valueNode;
        break;
    case STRING:
        valueNode = new TextNode((String) value);
        break;
    default:
        break;
    }
    return valueNode;
}

---

From source file:com.palominolabs.crm.sf.rest.RestConnectionImpl.java

private static boolean isNull(JsonNode node) {
    return node == null || node == NullNode.instance;
}

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From source file:org.apache.usergrid.java.client.model.UsergridEntity.java

@JsonAnySetter
private void internalPutProperty(@NotNull final String name, @Nullable final JsonNode value) {
    if (value == null) {
        properties.put(name, NullNode.instance);
    } else {//from w w w  .  ja  v  a 2  s .c  o m
        properties.put(name, value);
    }
}

---

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