Examples of com.fasterxml.jackson.core.TreeNode

com.fasterxml.jackson.core.TreeNode
Marker interface used to denote JSON Tree nodes, as far as the core package knows them (which is very little): mostly needed to allow {@link ObjectCodec} to have some levelof interoperability. Most functionality is within JsonNode base class in mapper package.
Note that in Jackson 1.x JsonNode itself was part of core package: Jackson 2.x refactored this since conceptually Tree Model is part of mapper package, and so part visible to core package should be minimized.
NOTE: starting with Jackson 2.2, there is more functionality available via this class, and the intent is that this should form actual base for multiple alternative tree representations; for example, immutable trees could use different implementation than mutable trees. It should also be possible to move actual Tree Model implementation out of databind package eventually (Jackson 3?). @since 2.2

    
    // [Issue-11]: simple cast, for Tree
    public void testNodeConvert() throws Exception
    {
        ObjectNode src = (ObjectNode) MAPPER.readTree("{}");
        TreeNode node = src;
        ObjectNode result = MAPPER.treeToValue(node, ObjectNode.class);
        // should just cast...
        assertSame(src, result);
    }

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public class AdditionalPropertiesDeserializer extends JsonDeserializer<ObjectSchema.AdditionalProperties> {


    @Override
    public ObjectSchema.AdditionalProperties deserialize(JsonParser jp, DeserializationContext ctxt) throws IOException, JsonProcessingException {
        ObjectMapper mapper = (ObjectMapper) jp.getCodec();
        TreeNode node = mapper.readTree(jp);
        String nodeStr = mapper.writeValueAsString(node);
        if (node instanceof ObjectNode) {
            JsonSchema innerSchema = mapper.readValue(nodeStr, JsonSchema.class);
            return new ObjectSchema.SchemaAdditionalProperties(innerSchema);
        } else if (node instanceof BooleanNode) {

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public class AdditionalItemsDeserializer extends JsonDeserializer<ArraySchema.AdditionalItems>
{
  @Override
  public ArraySchema.AdditionalItems deserialize(JsonParser jp, DeserializationContext ctxt) throws IOException, JsonProcessingException
  {
      TreeNode node = jp.readValueAsTree();
    
    if (node instanceof ObjectNode) {
        // not clean, but has to do...
            ObjectMapper mapper = (ObjectMapper) jp.getCodec();
      JsonSchema innerSchema = mapper.treeToValue(node, JsonSchema.class);
      return new ArraySchema.SchemaAdditionalItems(innerSchema);
    }
    if (node instanceof BooleanNode) {
      BooleanNode booleanNode = (BooleanNode) node;
      if (booleanNode.booleanValue()) {
        return null; // "additionalItems":true is the default
      }
      return new ArraySchema.NoAdditionalItems();
    }
    throw new JsonMappingException("additionalItems nodes can only be of "
            + "type Boolean or Object; instead found something starting with token " + node.asToken());
  }

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    @Override
    public JSONOptions deserialize(JsonParser jp, DeserializationContext ctxt) throws IOException,
        JsonProcessingException {
      JsonLocation l = jp.getTokenLocation();
//      logger.debug("Reading tree.");
      TreeNode n = jp.readValueAsTree();
//      logger.debug("Tree {}", n);
      if (n instanceof JsonNode) {
        return new JSONOptions( (JsonNode) n, l);
      } else {
        throw new IllegalArgumentException(String.format("Received something other than a JsonNode %s", n));

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public class ObjectIdDeserializer extends JsonDeserializer<String> {


    @Override
    public String deserialize(JsonParser jp, DeserializationContext ctxt) throws IOException {
        TreeNode treeNode = jp.readValueAsTree();
        JsonNode oid = ((JsonNode) treeNode).get(MONGO_QUERY_OID);
        if (oid != null)
            return oid.asText();
        else
            return ((JsonNode) treeNode).asText();

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      //
      final byte[] data;
      if (object instanceof TreeNode) {
        try {
          TreeNode tree = (TreeNode)object;
          JsonFactory jfactory = new JsonFactory();
          ByteArrayOutputStream buffer = new ByteArrayOutputStream();
          JsonGenerator generator = jfactory.createGenerator(buffer);
          ObjectMapper mapper = new ObjectMapper();
          mapper.writeTree(generator, tree);

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    @Override
    public JSONOptions deserialize(JsonParser jp, DeserializationContext ctxt) throws IOException,
        JsonProcessingException {
      JsonLocation l = jp.getTokenLocation();
//      logger.debug("Reading tree.");
      TreeNode n = jp.readValueAsTree();
//      logger.debug("Tree {}", n);
      if(n instanceof JsonNode){
        return new JSONOptions( (JsonNode) n, l); 
      }else{
        throw new IllegalArgumentException(String.format("Received something other than a JsonNode %s", n));

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