Package org.multiverse.api.callables
Interface TxnDoubleCallable
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public interface TxnDoubleCallable
A transactional callable contains the logic that needs to be executed transactionally and normally is executed by theTxnExecutor
. This transactional callable is optimized for retuning a primitive type: double. Using this TxnDoubleCallable instead of theTxnCallable
is that no object wrapper needs to be created and there is no reason to deal with a potential null value.
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Method Summary
All Methods Instance Methods Abstract Methods Modifier and Type Method Description double
call(Txn txn)
Executes the callable.
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Method Detail
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call
double call(Txn txn) throws java.lang.Exception
Executes the callable.- Parameters:
txn
- the Transaction. Depending on the txnPropagationLevel
, this could be null.- Returns:
- the result of the execution.
- Throws:
java.lang.Exception
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