com.fasterxml.jackson.core.JsonStreamContext Java Examples

@Override
public void close() throws IOException {
    if (generator.isClosed()) {
        return;
    }
    JsonStreamContext context = generator.getOutputContext();
    if ((context != null) && (context.inRoot() == false)) {
        throw new IOException("Unclosed object or array found");
    }
    if (writeLineFeedAtEnd) {
        flush();
        // Bypass generator to always write the line feed
        getLowLevelGenerator().writeRaw(LF);
    }
    generator.close();
}
 

static String toJsonPath(JsonStreamContext context) {
  StringBuilder builder = new StringBuilder();
  for (JsonStreamContext c = context; c != null; c = c.getParent()) {
    if (c.inArray()) {
      builder.insert(0, "[" + c.getCurrentIndex() + "]");
    } else if (c.inObject()) {
      @Nullable String name = c.getCurrentName();
      if (name == null || name.isEmpty()) {
        builder.insert(0, "[]");
      } else if (isAsciiIdentifierPath(name)) {
        builder.insert(0, "." + name);
      } else {
        builder.insert(0, "['" + name + "']");
      }
    } else if (c.inRoot()) {
      builder.insert(0, "$");
    }
  }
  return builder.toString();
}
 

protected boolean inRoot() {
    if (isFiltered()) {
        JsonStreamContext context = filter.getFilterContext();
        return ((context != null) && (context.inRoot() && context.getCurrentName() == null));
    }
    return false;
}
 

public NumericallyIndexedObjectBackedArray(ConfigValue n, HoconNodeCursor p) {
    super(JsonStreamContext.TYPE_ARRAY, p);
    TreeMap<Integer, ConfigValue> sortedContents = new TreeMap<Integer, ConfigValue>();
    for (Map.Entry<String, ConfigValue> entry: ((ConfigObject) n).entrySet()) {
        try {
            Integer key = Integer.parseInt(entry.getKey());
            sortedContents.put(key, entry.getValue());
        } catch (NumberFormatException e) {
            throw new IllegalStateException("Key: '" + entry.getKey() +
                    "' in object could not be parsed to an Integer, therefor we cannot be using a " +
                    getClass().getSimpleName());
        }
    }
    _contents = sortedContents.values().iterator();
}
 

/**
 * only first call return FetchPath
 * <p>
 * and then call is bean sub-path (property)
 *
 * @return fetch path or null
 */
private FetchPath getPathProperties(JsonGenerator jsonGenerator) {
    FetchPath fetchPath = EbeanUtils.getRequestFetchPath();
    if (fetchPath != null) {
        JsonStreamContext context = jsonGenerator.getOutputContext();
        JsonStreamContext parent = context.getParent();
        if (parent == null) {
            return fetchPath;
        }
        StringBuilder path = new StringBuilder();
        while (parent != null && !parent.inRoot()) {
            if (parent != context.getParent()) {
                path.insert(0, '.');
            }
            path.insert(0, parent.getCurrentName());
            parent = parent.getParent();
        }
        String fp = path.toString();
        PathProperties fetch = new PathProperties();
        EbeanPathProps src = (EbeanPathProps) fetchPath;
        String cp = fp + ".";
        for (BeanPathProperties.Props prop : src.getPathProps()) {
            String pp = prop.getPath();
            if (pp != null) {
                if (pp.equals(fp)) {
                    addToFetchPath(fetch, null, prop);
                } else if (pp.startsWith(cp)) {
                    addToFetchPath(fetch, pp.substring(cp.length()), prop);
                }
            }
        }

        return fetch;
    }
    return null;
}
 

protected void onSerializationException(JsonStreamContext ctxt, JsonGenerator jgen, Object value, Exception e) throws IOException {
    Exceptions.propagateIfFatal(e);

    JsonSerializer<Object> unknownTypeSerializer = getUnknownTypeSerializer(value.getClass());
    if (unknownTypeSerializer instanceof ErrorAndToStringUnknownTypeSerializer) {
        ((ErrorAndToStringUnknownTypeSerializer)unknownTypeSerializer).serializeFromError(ctxt, e, value, jgen, this);
    } else {
        unknownTypeSerializer.serialize(value, jgen, this);
    }
}
 

@Override
public void serializeValue(JsonGenerator jgen, Object value, JavaType rootType) throws IOException {
    JsonStreamContext ctxt = jgen.getOutputContext();
    try {
        super.serializeValue(jgen, value, rootType);
    } catch (Exception e) {
        onSerializationException(ctxt, jgen, value, e);
    }
}
 

@Override
public void serializeValue(JsonGenerator jgen, Object value) throws IOException {
    JsonStreamContext ctxt = jgen.getOutputContext();
    try {
        super.serializeValue(jgen, value);
    } catch (Exception e) {
        onSerializationException(ctxt, jgen, value, e);
    }
}
 

String getPropertyName(JsonStreamContext context) {
  String name;
  if (context.inObject()) {
    name = context.getCurrentName();
  } else if (context.inArray()) {
    name = context.getParent().getCurrentName() + String.format("[%d]", context.getEntryCount());
  } else {
    name = "<root>";
  }
  return name;
}
 

protected static boolean isInICalProperty(JsonStreamContext context) {
	if (context == null) {
		return false;
	}

	Object currentValue = context.getCurrentValue();
	if (currentValue == PROPERTY_VALUE) {
		return true;
	}

	return isInICalProperty(context.getParent());
}
 

@Override
protected Object deserializeFromObjectUsingNonDefault(JsonParser p, DeserializationContext ctxt) throws IOException {
    JsonStreamContext parent = p.getParsingContext().getParent();
    // handle embedded types
    if (parent != null && parent.getCurrentValue() != null) {

        Object value = parent.getCurrentValue();
        Class<?> parentClass = value.getClass();
        Method method = embeddedGetters.get(parentClass);

        if (method == null) {
            Class<?> target = getValueType().getRawClass();
            for (Method m : parentClass.getDeclaredMethods()) {
                if (target.isAssignableFrom(m.getReturnType()) && m.getParameterTypes().length == 0) {
                    embeddedGetters.put(parentClass, m);
                    method = m;
                    break;
                }
            }
        }
        if (method != null) {
            try {
                return method.invoke(value);
            } catch (Exception e) {
                throw new RuntimeException(e);
            }
        }
    }

    return super.deserializeFromObjectUsingNonDefault(p, ctxt);
}
 

private boolean willRecursive(JsonStreamContext ctxt, Method method) throws IOException {
    if (ctxt != null) {
        JsonStreamContext ptxt;
        ptxt = ctxt.getParent();
        while(ptxt != null) {
            if(ptxt.getCurrentValue() == null
                    || !ReflectionUtils.getInnermostType(method).equals(ptxt.getCurrentValue().getClass().getCanonicalName())) {
                ptxt = ptxt.getParent();
            }else {
                return true;
            }
        }
    }
    return false;
}
 

@Override
public Object deserialize(JsonParser p, DeserializationContext ctxt) throws IOException, JsonProcessingException {
	JsonStreamContext jsonStreamContext = p.getParsingContext().getParent();
	InnerSearchHit hit = (InnerSearchHit) jsonStreamContext.getCurrentValue();
	ESClass refs = null;
	if(hit != null) {
		if (hit.getIndex() == null) {
			refs = getESInnerTypeReferences(hit.getType());
		} else {
			refs = getESInnerTypeReferences(getTypeName(p));
		}
	}
	if(refs == null){
		return ctxt.findRootValueDeserializer(ESSerialThreadLocal.getMapObjectType()).deserialize(p,ctxt);
	}
	else
	{
		if(refs instanceof ESTypeReferences)
			return ctxt.findRootValueDeserializer(ESSerialThreadLocal.getJavaType(((ESTypeReferences)refs).getHitType())).deserialize(p,ctxt);
		else
		{
			ESClassType classType = (ESClassType)refs;
			return ctxt.findRootValueDeserializer(ESSerialThreadLocal.getJavaType(classType.getHitClass())).deserialize(p,ctxt);

		}
	}


}
 

@Override
public void serialize(T value, JsonGenerator gen, SerializerProvider provider) throws IOException {

    JsonStreamContext context = gen.getOutputContext();
    gen.setCurrentValue(value); // must set manually, or else the result of context.getCurrentValue() will be null。this method will call context.setCurrentValue(value);

    gen.writeStartObject(); // writeStartObject(value) will call setCurrentValue(value) well
    Class<?> entityClass = value.getClass();
    Method[] methods = entityClass.getMethods(); // include method inherited from super classes
    for(Method method : methods) {
        // check whether serialization will be recursive
        if (willRecursive(gen, context, method)) {
            gen.writeEndObject();
            return;
        }

        // method annotated with @Field
        Field fieldAnnotation = method.getAnnotation(Field.class);
        if(fieldAnnotation != null) {
            serializeField(value, gen, entityClass, method, fieldAnnotation);
        }else {
            MultiFields multiFields = method.getAnnotation(MultiFields.class);
            if(multiFields != null) {
                Field mainFieldAnnotation = multiFields.mainField();
                serializeField(value, gen, entityClass, method, mainFieldAnnotation);
            }
        }
    }

    // gen.writeObjectField("extra_field", "whatever_value");
    gen.writeEndObject();

}
 

private boolean willRecursive(JsonGenerator gen, JsonStreamContext ctxt, Method method) throws IOException {
    if (ctxt != null) {
        JsonStreamContext ptxt = ctxt.getParent();
        while(ptxt != null) {
            // if(ctxt.getCurrentValue() != ptxt.getCurrentValue()) {
            //     ptxt = ptxt.getParent();
            // }else {
            //     gen.writeEndObject();
            //     return;
            // }

            // if(ptxt.getCurrentValue() == null || !ctxt.getCurrentValue().getClass().equals(ptxt.getCurrentValue().getClass())) {
            //         ptxt = ptxt.getParent();
            // }else {
            //     gen.writeEndObject();
            //     return;
            // }

            // String typeName = method.getGenericReturnType().getTypeName();
            if(ptxt.getCurrentValue() == null || !ReflectionUtils.getInnermostType(method).equals(ptxt.getCurrentValue().getClass().getCanonicalName())) {
                ptxt = ptxt.getParent();
            }else {
                return true;
            }
        }
    }
    return false;
}
 

@Override
public Object deserialize(JsonParser p, DeserializationContext ctx) throws IOException {
    if(jobsManager == null) {
        throw new IllegalStateException("This deserializer need a jobsManager instance, see 'JobParametersDeserializer.setJobsManager'");
    }
    final JsonStreamContext jsc = p.getParsingContext();
    String paramName = null;
    JsonStreamContext parent = jsc;
    while(parent != null) {
        paramName = parent.getCurrentName();
        if(paramName != null) {
            break;
        }
        parent = parent.getParent();
    }
    if(parent == null) {
        throw new NullPointerException("Something wrong: we can not find our parent object, " +
          "may be you use this deserializer on custom object?");
    }
    JobParameters.Builder r = (JobParameters.Builder) parent.getParent().getCurrentValue();
    String jobType = r.getType();
    JobDescription desc = jobsManager.getDescription(jobType);
    JobParameterDescription param = desc.getParameters().get(paramName);
    TypeFactory typeFactory = ctx.getTypeFactory();
    JavaType type;
    if(param == null) {
        type = typeFactory.constructType(Object.class);
    } else {
        type = typeFactory.constructType(param.getType());
    }
    JsonDeserializer<Object> deser = ctx.findNonContextualValueDeserializer(type);
    try {
        return deser.deserialize(p, ctx);
    } catch (Exception e) {
        throw new RuntimeException("Can not deserialize '" + jobType + "." + paramName + "' job parameter ", e );
    }
}
 

/**
 * Default constructor
 * @param message The error message
 * @param jsonStreamContext The JSON stream context
 * @param throwable An optional throwable associated with the error
 */
JsonError(String message, JsonStreamContext jsonStreamContext, 
    Throwable throwable)
{
    this.message = message;
    this.jsonPath = Collections.unmodifiableList(
        createJsonPath(jsonStreamContext));
    this.throwable = throwable;
}
 

/**
 * Create a list of strings describing the JSON path for the given
 * stream context
 * 
 * @param streamContext The stream context
 * @return The string list
 */
private static List<String> createJsonPath(JsonStreamContext streamContext)
{
    Collection<JsonStreamContext> list = expand(streamContext);
    return list.stream()
        .map(c -> c.getCurrentName() == null ? 
            "" : c.getCurrentName())
        .collect(Collectors.toList());
}
 

/**
 * Create a collection consisting of stream contexts, starting at the root
 * node and ending at the given stream context
 *  
 * @param streamContext The stream context
 * @return The collection
 */
private static Collection<JsonStreamContext> expand(
    JsonStreamContext streamContext)
{
    Deque<JsonStreamContext> collection = 
        new LinkedList<JsonStreamContext>();
    JsonStreamContext current = streamContext;
    while (current != null)
    {
        collection.addFirst(current);
        current = current.getParent();
    }
    return collection;
}
 

protected JsonStreamContext getRootContext() {
  return rootContext;
}
 

private void updateIndenter(JsonStreamContext context) {
	boolean inICalProperty = isInICalProperty(context);
	super.indentArraysWith(inICalProperty ? propertyIndenter : arrayIndenter);
	super.indentObjectsWith(inICalProperty ? propertyIndenter : objectIndenter);
}
 

@Override
public JsonStreamContext getParsingContext() {
    throw new UnsupportedOperationException();
}
 

@Override
public JsonStreamContext getParsingContext() {
  return jsonParser.getParsingContext();
}
 

public void serializeFromError(JsonStreamContext ctxt, @Nullable Exception error, Object value, JsonGenerator jgen, SerializerProvider configurableSerializerProvider) throws IOException {
    if (log.isDebugEnabled())
        log.debug("Recovering from json serialization error, serializing "+value+": "+error);

    if (BidiSerialization.isStrictSerialization())
        throw new JsonMappingException("Cannot serialize "
            + (ctxt!=null && !ctxt.inRoot() ? "object containing " : "")
            + value.getClass().getName()+" when strict serialization requested");

    if (WARNED_CLASSES.add(value.getClass().getCanonicalName())) {
        log.warn("Standard serialization not possible for "+value.getClass()+" ("+value+")", error);
    }
    JsonStreamContext newCtxt = jgen.getOutputContext();

    // very odd, but flush seems necessary when working with large objects; presumably a buffer which is allowed to clear itself?
    // without this, when serializing the large (1.5M) Server json object from BrooklynJacksonSerializerTest creates invalid json,
    // containing:  "foo":false,"{"error":true,...
    jgen.flush();

    boolean createObject = !newCtxt.inObject() || newCtxt.getCurrentName()!=null;
    if (createObject) {
        jgen.writeStartObject();
    }

    if (allowEmpty(value.getClass())) {
        // write nothing
    } else {

        jgen.writeFieldName("error");
        jgen.writeBoolean(true);

        jgen.writeFieldName("errorType");
        jgen.writeString(NotSerializableException.class.getCanonicalName());

        jgen.writeFieldName("type");
        jgen.writeString(value.getClass().getCanonicalName());

        jgen.writeFieldName("toString");
        jgen.writeString(value.toString());

        if (error!=null) {
            jgen.writeFieldName("causedByError");
            jgen.writeString(error.toString());
        }

    }

    if (createObject) {
        jgen.writeEndObject();
    }

    while (newCtxt!=null && !newCtxt.equals(ctxt)) {
        if (jgen.getOutputContext().inArray()) { jgen.writeEndArray(); continue; }
        if (jgen.getOutputContext().inObject()) { jgen.writeEndObject(); continue; }
        break;
    }

}
 

@Override
public JsonStreamContext getParsingContext() {
  return null;
}
 

@Override
public JsonStreamContext getParsingContext() {
    return _nodeCursor;
}
 

public RootValue(ConfigValue n, HoconNodeCursor p) {
    super(JsonStreamContext.TYPE_ROOT, p);
    _node = n;
}
 

public Array(ConfigValue n, HoconNodeCursor p) {
    super(JsonStreamContext.TYPE_ARRAY, p);
    _contents = ((ConfigList)n).iterator();
}
 

@Override
public JsonStreamContext getParsingContext() {
    throw new UnsupportedOperationException();
}
 

public Object(ConfigValue n, HoconNodeCursor p) {
    super(JsonStreamContext.TYPE_OBJECT, p);
    _contents = ((ConfigObject) n).entrySet().iterator();
    _needEntry = true;
}