Spring Transaction Management-spring Framework transaction

Public interface Platformtransactionmanager {transactionstatus gettransaction (transactiondefinition definition)                Throws TransactionException;                void commit (Transactionstatus status) throws TransactionException; void rollback (Transactionstatus status) throws TransactionException;}

thegetTransaction(..)method returns aTransactionStatusobject, depending on aTransactionDefinitionparameter. The ReturnedTransactionStatusmight represent a new transaction, or can represent an existing transaction if a matching transaction exists in the C Urrent Call stack. The implication-latter case is, as with Java EE transaction contexts, aTransactionStatusis associated with aThreadof execution.

The TransactionDefinition interface specifies:

• isolation: Isolation. The degree to which this transaction are isolated from the work of other transactions. For example, can this transaction see uncommitted writes from other transactions?

• propagation: Continuity. Typically, all code executed within a transaction scope would run in that transaction. However, you had the option of specifying the behavior in the event that a transactional method was executed when a Transa Ction context already exists. For example, code can continue running in the existing transaction (the common case); The or the existing transaction can be suspended and a new transaction created. Spring offers all of the transaction propagation options familiar from EJB CMT. To read about the semantics of transaction propagation in Spring, see section 11.5.7, "Transaction propagation".

• timeout: Timed out. How long this transaction runs before timing out and being rolled back automatically by the underlying transaction infrast Ructure.

• read-only status: Read only. A read-only transaction can be used when your code reads but does not modify data. Read-only transactions can be a useful optimization in some cases, such as while you are using Hibernate.

Public interface Transactionstatus extends Savepointmanager {boolean isnewtransaction ();     Boolean hassavepoint ();     void Setrollbackonly ();     Boolean isrollbackonly ();     void Flush (); Boolean iscompleted ();}

Spring Transaction Management-spring Framework transaction