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org.apache.derby.iapi.store.raw.xact
Interface TransactionId  

All Superinterfaces:

java.io.Externalizable, org.apache.derby.iapi.services.io.Formatable, java.io.Serializable, org.apache.derby.iapi.services.io.TypedFormat

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public interface TransactionId

extends org.apache.derby.iapi.services.io.Formatable

A transaction identifier that is only unique within a raw store, do not ever pass this out of raw store. During reboot, all transaction Ids that have ever generated a log record will not be reused. However, if you put away the transaction Id of a read only transaction, then the is no guarentee that the transactionId won't be reused when the system reboots. It is much safer to store away the ExternalTrasanctionId rather than the transactionId. The equals() method for TransactionId implements by value equality. MT - immutable

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Method Summary
int	getMaxStoredSize()           Return the maximum number of bytes the transactionId will take to store using writeExternal.

 

Methods inherited from interface java.io.Externalizable

readExternal, writeExternal

 

Methods inherited from interface org.apache.derby.iapi.services.io.TypedFormat

getTypeFormatId

 

Method Detail

getMaxStoredSize

public int getMaxStoredSize()

Return the maximum number of bytes the transactionId will take to store using writeExternal.

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Overview  Package   Class  Use  Deprecated  Index
Home >> All >> org >> apache >> derby >> iapi >> store >> raw >> [ xact overview ]	PREV CLASS  NEXT CLASS
SUMMARY:  JAVADOC |  SOURCE |  DOWNLOAD | NESTED | FIELD | CONSTR | METHOD	DETAIL: FIELD | CONSTR | METHOD

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