Example usage for com.fasterxml.jackson.databind.node TreeTraversingParser TreeTraversingParser

Introduction

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

Prototype

public TreeTraversingParser(JsonNode n, ObjectCodec codec) 

Source Link

Usage

From source file:com.github.jonpeterson.jackson.module.interceptor.JsonInterceptingDeserializer.java

@Override
public T deserialize(JsonParser parser, DeserializationContext context) throws IOException {
    JsonNode jsonNode = parser.readValueAsTree();

    for (JsonInterceptor interceptor : interceptors)
        jsonNode = interceptor.intercept(jsonNode, context.getNodeFactory());

    JsonParser postInterceptionParser = new TreeTraversingParser(jsonNode, parser.getCodec());
    postInterceptionParser.nextToken();//from   w  w  w .  j  ava  2 s. co m
    return delegate.deserialize(postInterceptionParser, context);
}

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From source file:com.github.jonpeterson.jackson.module.versioning.VersionedModelDeserializer.java

@Override
public T deserialize(JsonParser parser, DeserializationContext context) throws IOException {
    JsonNode jsonNode = parser.readValueAsTree();

    if (!(jsonNode instanceof ObjectNode))
        throw context.mappingException("value must be a JSON object");

    ObjectNode modelData = (ObjectNode) jsonNode;

    JsonNode modelVersionNode = modelData.remove(jsonVersionedModel.propertyName());

    String modelVersion = null;/*w ww .j  av a  2  s.  c om*/
    if (modelVersionNode != null)
        modelVersion = modelVersionNode.asText();

    if (modelVersion == null)
        modelVersion = jsonVersionedModel.defaultDeserializeToVersion();

    if (modelVersion.isEmpty())
        throw context.mappingException("'" + jsonVersionedModel.propertyName()
                + "' property was null and defaultDeserializeToVersion was not set");

    // convert the model if converter specified and model needs converting
    if (converter != null && (jsonVersionedModel.alwaysConvert()
            || !modelVersion.equals(jsonVersionedModel.currentVersion())))
        modelData = converter.convert(modelData, modelVersion, jsonVersionedModel.currentVersion(),
                context.getNodeFactory());

    // set the serializeToVersionProperty value to the source model version if the defaultToSource property is true
    if (serializeToVersionAnnotation != null && serializeToVersionAnnotation.defaultToSource())
        modelData.put(serializeToVersionProperty.getName(), modelVersion);

    JsonParser postInterceptionParser = new TreeTraversingParser(modelData, parser.getCodec());
    postInterceptionParser.nextToken();
    return delegate.deserialize(postInterceptionParser, context);
}

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