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the max size of atomic transaction buffer

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Rasiand
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the max size of atomic transaction buffer

Post by Rasiand » Wed Jun 29, 2016 4:36 am

As we all know, atomic transaction buffer is used to log changes in order to help JCRE rollback in case of failed command. But I don't know the max size of this buffer. Could I just beginTransaction and never invoke commitTransaction ?

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wousim
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Re: the max size of atomic transaction buffer

Post by wousim » Thu Jun 30, 2016 1:59 am

It‘s set by the card manufacturer.

There are several methods in the JCSystem class that can do this - getMaxCommitCapacity and getUnusedCommitCapacity.
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Re: the max size of atomic transaction buffer

Post by Rasiand » Thu Jun 30, 2016 3:23 am

wousim wrote:It‘s set by the card manufacturer.

There are several methods in the JCSystem class that can do this - getMaxCommitCapacity and getUnusedCommitCapacity.


If I know nothing about the max size of this buffer, Can I just beginTransaction and never invoke commitTransaction ?
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wousim
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Re: the max size of atomic transaction buffer

Post by wousim » Fri Jul 01, 2016 9:34 pm

You'd better not do this! You may either receive 0x6F00 or have your transaction rolled back.
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