org.apache.cayenne.tx

Interface TransactionManager

All Known Implementing Classes:

DefaultTransactionManager

public interface TransactionManager

An optional utility service that simplifies wrapping multiple operations in transactions. Users only rarely need to invoke it directly, as all standard Cayenne operations are managing their own transactions internally.

Since:

4.0

Method Summary

Modifier and Type	Method and Description
<T> T	performInTransaction(TransactionalOperation<T> op) Starts a new transaction (or joins an existing one) calling TransactionalOperation.perform(), and then committing or rolling back the transaction.
<T> T	performInTransaction(TransactionalOperation<T> op, TransactionDescriptor descriptor) Performs operation in a transaction which parameters described by descriptor.
<T> T	performInTransaction(TransactionalOperation<T> op, TransactionListener callback) Starts a new transaction (or joins an existing one) calling TransactionalOperation.perform(), and then committing or rolling back the transaction.
<T> T	performInTransaction(TransactionalOperation<T> op, TransactionListener callback, TransactionDescriptor descriptor) Performs operation in a transaction which parameters described by descriptor.

Method Detail

performInTransaction

<T> T performInTransaction(TransactionalOperation<T> op)

Starts a new transaction (or joins an existing one) calling TransactionalOperation.perform(), and then committing or rolling back the transaction.

Type Parameters:

T - returned value type

Parameters:

op - an operation to perform within the transaction.

Returns:

a value returned by the "op" operation.

performInTransaction

<T> T performInTransaction(TransactionalOperation<T> op,
                           TransactionListener callback)

Starts a new transaction (or joins an existing one) calling TransactionalOperation.perform(), and then committing or rolling back the transaction. As transaction goes through stages, callback methods are invoked allowing the caller to customize transaction parameters.

Type Parameters:

T - returned value type

Parameters:

op - an operation to perform within the transaction.

callback - a callback to notify as transaction progresses through stages.

Returns:

a value returned by the "op" operation.

performInTransaction

<T> T performInTransaction(TransactionalOperation<T> op,
                           TransactionDescriptor descriptor)

Performs operation in a transaction which parameters described by descriptor.

Type Parameters:

T - result type

Parameters:

op - an operation to perform within the transaction.

descriptor - transaction descriptor

Returns:

a value returned by the "op" operation.

Since:

4.1

performInTransaction

<T> T performInTransaction(TransactionalOperation<T> op,
                           TransactionListener callback,
                           TransactionDescriptor descriptor)

Performs operation in a transaction which parameters described by descriptor. As transaction goes through stages, callback methods are invoked allowing the caller to customize transaction parameters.

Type Parameters:

T - returned value type

Parameters:

op - an operation to perform within the transaction.

callback - a callback to notify as transaction progresses through stages.

descriptor - transaction descriptor

Returns:

a value returned by the "op" operation.

Since:

4.1