MML-265 Clearing BiContext in between messages

[symphony-mariacristina]

Goal of this PR is to:

• Clear the BiContext every time we parse a new message (context.getBiContext() will only contain BiItems of the last message parsed)
• Compute ENTITY_JSON_SIZE BI only on input size of the entity Json object
• If the parser fails to parse the messageML (not valid format) then the BiContext will be empty

[thibauult]

Clear the BiContext every time we parse a new message (context.getBiContext() will only contain BiItems of the last message parsed)

I don't get it. I thought we were creating a new MessageMLContext instance every time we parse a new message : https://github.com/SymphonyOSF/symphony-agent/blob/master/agent/src/main/java/com/symphony/agent/server/V4AgentApi.java#L325

[symphony-youri]

Clear the BiContext every time we parse a new message (context.getBiContext() will only contain BiItems of the last message parsed)

I don't get it. I thought we were creating a new MessageMLContext instance every time we parse a new message : https://github.com/SymphonyOSF/symphony-agent/blob/master/agent/src/main/java/com/symphony/agent/server/V4AgentApi.java#L325

Yes we are but there is nothing to prevent you from reusing a MessageMLContext at least this way the bi context is cleared, the same way the result of the previous parse() call is cleated in MessageMLContext