Java JsonStreamContext.getCurrentValue方法代码示例

import com.fasterxml.jackson.core.JsonStreamContext; //导入方法依赖的package包/类
/** Get type for  "on" values that are plain URIs by deducing the type from their parent. */
private String getOnType(DeserializationContext ctxt) {
  // Easiest way: The parser has already constructed an annotation object with a motivation.
  // This is highly dependendant on the order of keys in the JSON, i.e. if "on" is the first key in the annotation
  // object, this won't work.
  Object curVal = ctxt.getParser().getCurrentValue();
  boolean isPaintingAnno = (curVal != null && curVal instanceof Annotation &&
                            ((Annotation) curVal).getMotivation() != null &&
                            ((Annotation) curVal).getMotivation().equals(Motivation.PAINTING));
  if (isPaintingAnno) {
      return "sc:Canvas";
  }
  // More reliable way: Walk up the parsing context until we hit a IIIF resource that we can deduce the type from
  // Usually this shouldn't be more than two levels up
  JsonStreamContext parent = ctxt.getParser().getParsingContext().getParent();
  while (parent != null && (parent.getCurrentValue() == null || !(parent.getCurrentValue() instanceof Resource))) {
    parent = parent.getParent();
  }
  if (parent != null) {
    Resource parentObj = (Resource) parent.getCurrentValue();
    return parentObj.getType();
  }
  return null;
}
 

import com.fasterxml.jackson.core.JsonStreamContext; //导入方法依赖的package包/类
private Path getPath(PropertyWriter writer, JsonStreamContext sc) {
    LinkedList<PathElement> elements = new LinkedList<>();

    if (sc != null) {
        elements.add(new PathElement(writer.getName(), sc.getCurrentValue()));
        sc = sc.getParent();
    }

    while (sc != null) {
        if (sc.getCurrentName() != null && sc.getCurrentValue() != null) {
            elements.addFirst(new PathElement(sc.getCurrentName(), sc.getCurrentValue()));
        }
        sc = sc.getParent();
    }

    return new Path(elements);
}
 

import com.fasterxml.jackson.core.JsonStreamContext; //导入方法依赖的package包/类
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;
}
 

import com.fasterxml.jackson.core.JsonStreamContext; //导入方法依赖的package包/类
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;
}
 

import com.fasterxml.jackson.core.JsonStreamContext; //导入方法依赖的package包/类
/**
 * JSON tree walk to find the druid query context of the current context and apply handler to the DruidQuery,
 * finds the current context if current context is a druid query.
 *
 * @param gen  the Json Generator to retrieve the tree to walk on.
 * @param mapper  a function that takes an DruidQuery as an argument and return the final desired returned result.
 * @param <T>  Type of result from the mapper
 *
 * @return an Optional of the desired result T if DruidQuery is found, Optional.empty otherwise
 */
public static <T> Optional<T> mapNearestDruidQuery(JsonGenerator gen, Function<DruidQuery, T> mapper) {
    JsonStreamContext context = gen.getOutputContext();

    while (context != null) {
        Object parent = context.getCurrentValue();
        if (parent instanceof DruidQuery) {
            return Optional.of(mapper.apply((DruidQuery) parent));
        }
        context = context.getParent();
    }
    return Optional.empty();
}
 

import com.fasterxml.jackson.core.JsonStreamContext; //导入方法依赖的package包/类
@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);
}
 

import com.fasterxml.jackson.core.JsonStreamContext; //导入方法依赖的package包/类
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());
}