| javax.transaction.TransactionSynchronizationRegistry
| TransactionSynchronizationRegistry | | public interface TransactionSynchronizationRegistry (Code) | | This interface is intended for use by system level application server
components such as persistence managers, resource adapters, as well as
EJB and Web application components. This provides the ability to
register synchronization objects with special ordering semantics,
associate resource objects with the current transaction, get the
transaction context of the current transaction, get current transaction
status, and mark the current transaction for rollback.
This interface is implemented by the application server by a
stateless service object. The same object can be used by any number of
components with thread safety.
In standard application server environments, an instance
implementing this interface can be looked up by a standard name via JNDI.
The standard name is java:comp/TransactionSynchronizationRegistry.
since:
JTA 1.1 |
| Method Summary | |
| Object | getResource(Object key)
Get an object from the Map of resources being managed for
the transaction bound to the current thread at the time this
method is called. | | boolean | getRollbackOnly()
Get the rollbackOnly status of the transaction bound to the
current thread at the time this method is called. | | Object | getTransactionKey()
Return an opaque object to represent the transaction bound to the
current thread at the time this method is called. | | int | getTransactionStatus()
Return the status of the transaction bound to the
current thread at the time this method is called. | | void | putResource(Object key, Object value)
Add or replace an object in the Map of resources being managed for
the transaction bound to the current thread at the time this
method is called. | | void | registerInterposedSynchronization(Synchronization sync)
Register a Synchronization instance with special ordering
semantics. | | void | setRollbackOnly()
Set the rollbackOnly status of the transaction bound to the
current thread at the time this method is called. |
| getResource | | Object getResource(Object key)(Code) | | Get an object from the Map of resources being managed for
the transaction bound to the current thread at the time this
method is called. The key should have been supplied earlier
by a call to putResouce in the same transaction. If the key
cannot be found in the current resource Map, null is returned.
The general contract of this method
is that of
java.util.Map.get(Object) for a Map that
supports non-null keys and null values. For example,
the returned value is null if there is no entry for the parameter
key or if the value associated with the key is actually null.
Parameters:
key - the key for the Map entry. the value associated with the key.
exception:
IllegalStateException - if no transaction is active.
exception:
NullPointerException - if the parameter key is null.
since:
JTA 1.1 |
| getRollbackOnly | | boolean getRollbackOnly()(Code) | | Get the rollbackOnly status of the transaction bound to the
current thread at the time this method is called.
the rollbackOnly status.
exception:
IllegalStateException - if no transaction is active.
since:
JTA 1.1 |
| getTransactionKey | | Object getTransactionKey()(Code) | | Return an opaque object to represent the transaction bound to the
current thread at the time this method is called. This object
overrides hashCode and equals to allow its use as the key in a
hashMap for use by the caller. If there is no transaction currently
active, return null.
This object will return the same hashCode and compare equal to
all other objects returned by calling this method
from any component executing in the same transaction context in the
same application server.
The toString method returns a String that might be usable by a
human reader to usefully understand the transaction context. The
toString result is otherwise not defined. Specifically, there is no
forward or backward compatibility guarantee of the results of
toString.
The object is not necessarily serializable, and has no defined
behavior outside the virtual machine whence it was obtained.
an opaque object representing the transaction bound to the current thread at the time this method is called.
since:
JTA 1.1 |
| getTransactionStatus | | int getTransactionStatus()(Code) | | Return the status of the transaction bound to the
current thread at the time this method is called.
This is the result of executing TransactionManager.getStatus() in
the context of the transaction bound to the current thread at the time
this method is called.
the status of the transaction bound to the current thread at the time this method is called.
since:
JTA 1.1 |
| putResource | | void putResource(Object key, Object value)(Code) | | Add or replace an object in the Map of resources being managed for
the transaction bound to the current thread at the time this
method is called. The supplied key should be of an caller-
defined class so as not to conflict with other users. The class
of the key must guarantee that the hashCode and equals methods are
suitable for use as keys in a map. The key and value are not examined
or used by the implementation. The general contract of this method
is that of
java.util.Map.put(ObjectObject) for a Map that
supports non-null keys and null values. For example,
if there is already an value associated with the key, it is replaced
by the value parameter.
Parameters:
key - the key for the Map entry.
Parameters:
value - the value for the Map entry.
exception:
IllegalStateException - if no transaction is active.
exception:
NullPointerException - if the parameter key is null.
since:
JTA 1.1 |
| registerInterposedSynchronization | | void registerInterposedSynchronization(Synchronization sync)(Code) | | Register a Synchronization instance with special ordering
semantics. Its beforeCompletion will be called after all
SessionSynchronization beforeCompletion callbacks and callbacks
registered directly with the Transaction, but before the 2-phase
commit process starts. Similarly, the afterCompletion
callback will be called after 2-phase commit completes but before
any SessionSynchronization and Transaction afterCompletion callbacks.
The beforeCompletion callback will be invoked in the transaction
context of the transaction bound to the current thread at the time
this method is called.
Allowable methods include access to resources,
e.g. Connectors. No access is allowed to "user components" (e.g. timer
services or bean methods), as these might change the state of data
being managed by the caller, and might change the state of data that
has already been flushed by another caller of
registerInterposedSynchronization.
The general context is the component
context of the caller of registerInterposedSynchronization.
The afterCompletion callback will be invoked in an undefined
context. No access is permitted to "user components"
as defined above. Resources can be closed but no transactional
work can be performed with them.
If this method is invoked without an active transaction context, an
IllegalStateException is thrown.
If this method is invoked after the two-phase commit processing has
started, an IllegalStateException is thrown.
Parameters:
sync - the Synchronization instance.
exception:
IllegalStateException - if no transaction is active.
since:
JTA 1.1 |
| setRollbackOnly | | void setRollbackOnly()(Code) | | Set the rollbackOnly status of the transaction bound to the
current thread at the time this method is called.
exception:
IllegalStateException - if no transaction is active.
since:
JTA 1.1 |
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