chaokunyang opened a new issue, #3000:
URL: https://github.com/apache/fory/issues/3000
### Feature Request
create @ForyField annotation to provide extra meta for perf/space
optimization
### Is your feature request related to a problem? Please describe
_No response_
### Describe the solution you'd like
If we can add `@ForyField` to field of struct like:
```java
class Foo {
@ForyField(nullable=False, id=0)
f1: String;
@ForyField(nullable=False, ref=False, id=1)
f2: Bar
}
```
Then when serialization, we can:
1. for field `f1`:
- skip write null flag, save 1 byte;
- for compatible mode, use id `0` to encode field name instead field_name
`f1`. When field_name `f1` is long, it can take more space.
3. for field `f2`:
- avoid put f2 to `IdentifyMap` if ref tracking is enabled, this can save
hashmap cost
- avoid write ref/null flag: save 1 byte
- for compatible mode, use id `1` for field name can save field name
space cost
protocol spec can be found at:
https://fory.apache.org/docs/next/specification/fory_xlang_serialization_spec#field-header
<img width="1650" height="1096" alt="Image"
src="https://github.com/user-attachments/assets/991f0ae4-ba2f-4b58-8eac-c084281c3833";
/>
### Describe alternatives you've considered
_No response_
### Additional context
_No response_
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