private static <T> T toValue(ObjectCodec codec, JsonNode node, Class<T> valueType)
     throws JsonProcessingException {
   if (node.isPojo()) {
     Object pojo = ((POJONode) node).getPojo();
     if (valueType.isInstance(pojo)) {
       return valueType.cast(pojo);
     }
   }
   return codec.treeToValue(node, valueType);
 }
 public void testEmbeddedObjectInArray() throws Exception {
   TokenBuffer buf = new TokenBuffer(MAPPER);
   buf.writeStartArray();
   buf.writeObject(MARKER);
   buf.writeEndArray();
   JsonNode node = MAPPER.readTree(buf.asParser());
   buf.close();
   assertTrue(node.isArray());
   assertEquals(1, node.size());
   JsonNode n = node.get(0);
   assertTrue(n.isPojo());
   assertSame(MARKER, ((POJONode) n).getPojo());
 }
Beispiel #3
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  /**
   * Determines whether or not the given {@link JsonNode} matches the given type. This method is
   * limitted to a few java types only and shouldn't be used to determine with great accuracy
   * whether or not the types match.
   *
   * @param node the {@link JsonNode}
   * @param type the {@link Class}
   * @return true if the types match, false otherwise
   */
  protected boolean isMatchingType(JsonNode node, Class<?> type) {

    if (node.isNull()) {
      return true;

    } else if (node.isTextual()) {
      return String.class.isAssignableFrom(type);

    } else if (node.isNumber()) {
      return Number.class.isAssignableFrom(type)
          || short.class.isAssignableFrom(type)
          || int.class.isAssignableFrom(type)
          || long.class.isAssignableFrom(type)
          || float.class.isAssignableFrom(type)
          || double.class.isAssignableFrom(type);

    } else if (node.isArray() && type.isArray()) {
      return (node.size() > 0) ? isMatchingType(node.get(0), type.getComponentType()) : false;

    } else if (node.isArray()) {
      return type.isArray() || Collection.class.isAssignableFrom(type);

    } else if (node.isBinary()) {
      return byte[].class.isAssignableFrom(type)
          || Byte[].class.isAssignableFrom(type)
          || char[].class.isAssignableFrom(type)
          || Character[].class.isAssignableFrom(type);

    } else if (node.isBoolean()) {
      return boolean.class.isAssignableFrom(type) || Boolean.class.isAssignableFrom(type);

    } else if (node.isObject() || node.isPojo()) {
      return !type.isPrimitive()
          && !String.class.isAssignableFrom(type)
          && !Number.class.isAssignableFrom(type)
          && !Boolean.class.isAssignableFrom(type);
    }

    // not sure if it's a matching type
    return false;
  }