Hi Yu,
The type of field
`com.twosigma.research.options.optticks.core.types.Event.askPrice` in the
original POJO class is Double, right?
If it's right, then next step we should find out why source.readUTF() is
`java.lang.Integer` instead of Double.
Nathan Yu <nuonathan...@twosigma.com> 于2021年8月13日周五 下午9:05写道：
> When the exception is thrown in PojoSerializer for my Event class,
>
> yoinks
>
> String subclassName = source.readUTF(); //
> subclassName is “java.lang.Integer”
>
> try {
>
> actualSubclass = Class.forName(subclassName, true, cl);
>
> } catch (ClassNotFoundException e) {
>
> throw new RuntimeException("Cannot instantiate class.", e);
>
> }
>
> subclassSerializer = getSubclassSerializer(actualSubclass);
>
> target = (T)
> subclassSerializer.createInstance(); // target is an
> Integer instead of my Event class??
>
> // also initialize fields for which the subclass serializer is
> not responsible
>
> initializeFields(target);
>
>
>
>
>
>
>
> *From:* Nathan Yu <nuonathan...@twosigma.com>
> *Sent:* Friday, August 13, 2021 8:49 AM
> *To:* JING ZHANG <beyond1...@gmail.com>; Schwalbe Matthias <
> matthias.schwa...@viseca.ch>
> *Cc:* user@flink.apache.org
> *Subject:* RE: Bug with PojoSerializer?
> java.lang.IllegalArgumentException: Can not set final double field
> Event.rating to java.lang.Integer
>
>
>
> Does flink provide any hooks for objects before/after they are
> serialized/deserialized?
>
