Re: verify an object is latest in cache

> But in few cases I want to make sure that the object I am going to use is latest. Even if object is coming from client cache I want to verify whether it is updated or not. Is there any ZEO/ZODB API to verify an object revision ?

Hi,

You may want to use Connection.readCurrent() (e.g., `pers_obj._p_jar.readCurrent(pers_obj)` to make sure that `pers_obj` is the latest revision). When the transaction is ready to commit, if any object that you've called `readCurrent()` on is *not* the most recent, the cache will be invalidated for that object, a ConflictError will be raised, and your transaction should be retried.

From IConnection in interfaces.py:

    def readCurrent(obj):
        """Make sure an object being read is current

        This is used when applications want to ensure a higher level
        of consistency for some operations. This should be called when
        an object is read and the information read is used to write a
        separate object.
        """

Jason

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