public class DataSourceTransactionManager
extends org.springframework.transaction.support.AbstractPlatformTransactionManager
implements org.springframework.transaction.support.ResourceTransactionManager, org.springframework.beans.factory.InitializingBean
PlatformTransactionManager
implementation for a single JDBC DataSource. This class is
capable of working in any environment with any JDBC driver, as long as the setup
uses a javax.sql.DataSource as its Connection factory mechanism.
Binds a JDBC Connection from the specified DataSource to the current thread,
potentially allowing for one thread-bound Connection per DataSource.
Note: The DataSource that this transaction manager operates on needs to return independent Connections. The Connections may come from a pool (the typical case), but the DataSource must not return thread-scoped / request-scoped Connections or the like. This transaction manager will associate Connections with thread-bound transactions itself, according to the specified propagation behavior. It assumes that a separate, independent Connection can be obtained even during an ongoing transaction.
Application code is required to retrieve the JDBC Connection via
DataSourceUtils.getConnection(DataSource) instead of a standard
J2EE-style DataSource.getConnection() call. Spring classes such as
JdbcTemplate use this strategy implicitly.
If not used in combination with this transaction manager, the
DataSourceUtils lookup strategy behaves exactly like the native
DataSource lookup; it can thus be used in a portable fashion.
Alternatively, you can allow application code to work with the standard
J2EE-style lookup pattern DataSource.getConnection(), for example for
legacy code that is not aware of Spring at all. In that case, define a
TransactionAwareDataSourceProxy for your target DataSource, and pass
that proxy DataSource to your DAOs, which will automatically participate in
Spring-managed transactions when accessing it.
Supports custom isolation levels, and timeouts which get applied as
appropriate JDBC statement timeouts. To support the latter, application code
must either use JdbcTemplate, call
DataSourceUtils.applyTransactionTimeout(java.sql.Statement, javax.sql.DataSource) for each created JDBC Statement,
or go through a TransactionAwareDataSourceProxy which will create
timeout-aware JDBC Connections and Statements automatically.
Consider defining a LazyConnectionDataSourceProxy for your target
DataSource, pointing both this transaction manager and your DAOs to it.
This will lead to optimized handling of "empty" transactions, i.e. of transactions
without any JDBC statements executed. A LazyConnectionDataSourceProxy will not fetch
an actual JDBC Connection from the target DataSource until a Statement gets executed,
lazily applying the specified transaction settings to the target Connection.
This transaction manager supports nested transactions via the JDBC 3.0
Savepoint mechanism. The
"nestedTransactionAllowed" flag defaults
to "true", since nested transactions will work without restrictions on JDBC
drivers that support savepoints (such as the Oracle JDBC driver).
This transaction manager can be used as a replacement for the
org.springframework.transaction.jta.JtaTransactionManager in the single
resource case, as it does not require a container that supports JTA, typically
in combination with a locally defined JDBC DataSource (e.g. an Apache Commons
DBCP connection pool). Switching between this local strategy and a JTA
environment is just a matter of configuration!
AbstractPlatformTransactionManager.setNestedTransactionAllowed(boolean),
Savepoint,
DataSourceUtils.getConnection(javax.sql.DataSource),
DataSourceUtils.applyTransactionTimeout(java.sql.Statement, javax.sql.DataSource),
DataSourceUtils.releaseConnection(java.sql.Connection, javax.sql.DataSource),
TransactionAwareDataSourceProxy,
LazyConnectionDataSourceProxy,
JdbcTemplate,
Serialized Form| Constructor and Description |
|---|
DataSourceTransactionManager()
Create a new DataSourceTransactionManager instance.
|
DataSourceTransactionManager(DataSource dataSource)
Create a new DataSourceTransactionManager instance.
|
| Modifier and Type | Method and Description |
|---|---|
void |
afterPropertiesSet() |
protected void |
doBegin(Object transaction,
org.springframework.transaction.TransactionDefinition definition)
This implementation sets the isolation level but ignores the timeout.
|
protected void |
doCleanupAfterCompletion(Object transaction) |
protected void |
doCommit(org.springframework.transaction.support.DefaultTransactionStatus status) |
protected Object |
doGetTransaction() |
protected void |
doResume(Object transaction,
Object suspendedResources) |
protected void |
doRollback(org.springframework.transaction.support.DefaultTransactionStatus status) |
protected void |
doSetRollbackOnly(org.springframework.transaction.support.DefaultTransactionStatus status) |
protected Object |
doSuspend(Object transaction) |
DataSource |
getDataSource()
Return the JDBC DataSource that this instance manages transactions for.
|
Object |
getResourceFactory() |
protected boolean |
isExistingTransaction(Object transaction) |
void |
setDataSource(DataSource dataSource)
Set the JDBC DataSource that this instance should manage transactions for.
|
commit, determineTimeout, getDefaultTimeout, getTransaction, getTransactionSynchronization, invokeAfterCompletion, isFailEarlyOnGlobalRollbackOnly, isGlobalRollbackOnParticipationFailure, isNestedTransactionAllowed, isRollbackOnCommitFailure, isValidateExistingTransaction, newTransactionStatus, prepareForCommit, prepareSynchronization, prepareTransactionStatus, registerAfterCompletionWithExistingTransaction, resume, rollback, setDefaultTimeout, setFailEarlyOnGlobalRollbackOnly, setGlobalRollbackOnParticipationFailure, setNestedTransactionAllowed, setRollbackOnCommitFailure, setTransactionSynchronization, setTransactionSynchronizationName, setValidateExistingTransaction, shouldCommitOnGlobalRollbackOnly, suspend, triggerBeforeCommit, triggerBeforeCompletion, useSavepointForNestedTransactionpublic DataSourceTransactionManager()
setDataSource(javax.sql.DataSource)public DataSourceTransactionManager(DataSource dataSource)
dataSource - JDBC DataSource to manage transactions forpublic void setDataSource(DataSource dataSource)
This will typically be a locally defined DataSource, for example an Apache Commons DBCP connection pool. Alternatively, you can also drive transactions for a non-XA J2EE DataSource fetched from JNDI. For an XA DataSource, use JtaTransactionManager.
The DataSource specified here should be the target DataSource to manage transactions for, not a TransactionAwareDataSourceProxy. Only data access code may work with TransactionAwareDataSourceProxy, while the transaction manager needs to work on the underlying target DataSource. If there's nevertheless a TransactionAwareDataSourceProxy passed in, it will be unwrapped to extract its target DataSource.
The DataSource passed in here needs to return independent Connections. The Connections may come from a pool (the typical case), but the DataSource must not return thread-scoped / request-scoped Connections or the like.
TransactionAwareDataSourceProxy,
org.springframework.transaction.jta.JtaTransactionManagerpublic DataSource getDataSource()
public void afterPropertiesSet()
afterPropertiesSet in interface org.springframework.beans.factory.InitializingBeanpublic Object getResourceFactory()
getResourceFactory in interface org.springframework.transaction.support.ResourceTransactionManagerprotected Object doGetTransaction()
doGetTransaction in class org.springframework.transaction.support.AbstractPlatformTransactionManagerprotected boolean isExistingTransaction(Object transaction)
isExistingTransaction in class org.springframework.transaction.support.AbstractPlatformTransactionManagerprotected void doBegin(Object transaction, org.springframework.transaction.TransactionDefinition definition)
doBegin in class org.springframework.transaction.support.AbstractPlatformTransactionManagerprotected Object doSuspend(Object transaction)
doSuspend in class org.springframework.transaction.support.AbstractPlatformTransactionManagerprotected void doResume(Object transaction, Object suspendedResources)
doResume in class org.springframework.transaction.support.AbstractPlatformTransactionManagerprotected void doCommit(org.springframework.transaction.support.DefaultTransactionStatus status)
doCommit in class org.springframework.transaction.support.AbstractPlatformTransactionManagerprotected void doRollback(org.springframework.transaction.support.DefaultTransactionStatus status)
doRollback in class org.springframework.transaction.support.AbstractPlatformTransactionManagerprotected void doSetRollbackOnly(org.springframework.transaction.support.DefaultTransactionStatus status)
doSetRollbackOnly in class org.springframework.transaction.support.AbstractPlatformTransactionManagerprotected void doCleanupAfterCompletion(Object transaction)
doCleanupAfterCompletion in class org.springframework.transaction.support.AbstractPlatformTransactionManager