[jboss-dev-forums] [Javassist Development] - Why creating a new CtTypeClass while compiling

[ami tabak]

ami tabak [https://community.jboss.org/people/amitabakoptier] created the discussion

"Why creating a new CtTypeClass while compiling"

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A Question regarding the usage of CtClass 
I have a scenario where I first add a new field to the class and then add insertBefore which is using that new field.

I noticed javassist on the insertBefore has access to the CtClass (1^st^ image) but later on when looking up the new field it goes through MemberResolver. lookupClass0
The problem is that if anyone added via  public CtClass makeClass(InputStream classfile)  non synchronized method a CtClass based on the original  byteCode I will not find the new member I just added.

My questions are
1. Why do we need to look up the CtClass in the pool if we had it at the beginning of the insertBefore flow ?  e.g. use the same instance throughout the flow 
2. Why are some of the ClassPool makeClass syncronized and some are not ?
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