Sth. wrong with MaxSegment and MinSegment in JSONPath

[sinojyj]

The inner class MaxSegment and MinSegment in JSONPath has a bug.
e.g. 1 there is a JSONString like this:
{ 'id' : 0, 'items' : [ {'name': 'apple', 'price' : 30 }, {'name': 'pear', 'price' : 40 } ] }
the Path String as this:
$.items[*].price.max()
exactly it should be "40" but throw a UnsupportedOperationException.

e.g. 2 when the path string change to $.items[*].price.size() , I got a correct result as "2".

so, I read the source codes like this:
` static class SizeSegment implements Segment {

    public final static SizeSegment instance = new SizeSegment();

    public Integer eval(JSONPath path, Object rootObject, Object currentObject) {
        return path.evalSize(currentObject);
    }

    public void extract(JSONPath path, DefaultJSONParser parser, Context context) {
        throw new UnsupportedOperationException();
    }
}`

`static class MaxSegment implements Segment {

    public final static MaxSegment instance = new MaxSegment();

    public Object eval(JSONPath path, Object rootObject, Object currentObject) {
        Object max = null;
        if (rootObject instanceof Collection) {
            Iterator iterator = ((Collection) rootObject).iterator();
            while (iterator.hasNext()) {
                Object next = iterator.next();
                if (next == null) {
                    continue;
                }

                if (max == null) {
                    max = next;
                } else if (compare(max, next) < 0) {
                    max = next;
                }
            }
        } else {
            throw new UnsupportedOperationException();
        }

        return max;
    }

    public void extract(JSONPath path, DefaultJSONParser parser, Context context) {
        throw new UnsupportedOperationException();
    }
}`

In class SizeSegment,the eval function use "currentObject" , it was $.items[*].price .
In class MaxSegment and MinSegment , they use "rootObject" , it was $.

so, Is it a bug?

[wenshao]

https://github.com/alibaba/fastjson/releases/tag/1.2.68
bug fixed, please use the new version