# javax.activity

***

**1. Creating and Using a Transaction Manager**

```java
import javax.activity.TransactionManager;

try {
    TransactionManager tm = TransactionManagerFactory.getTransactionManager();
    tm.begin();
    // Perform transactional operations
    tm.commit();
} catch (Exception e) {
    tm.rollback();
}
```

**2. Implementing the javax.transaction.Synchronization Interface**

```java
import javax.activity.Synchronization;

public class MySynchronization implements Synchronization {

    @Override
    public void beforeCompletion() {
        // Perform any necessary actions before transaction completes
    }

    @Override
    public void afterCompletion(int status) {
        // Perform any necessary actions after transaction completes, status indicates success/failure
    }
}
```

**3. Registering a Resource Manager**

```java
import javax.activity.ResourceAdapter;
import javax.activity.ResourceAdapterWrapper;
import javax.activity.XAResource;

public class MyResourceManager implements ResourceAdapterWrapper {

    @Override
    public ResourceAdapter getDelegate() {
        return null;
    }

    @Override
    public XAResource getXAResource(String name) {
        return new MyXAResource();
    }
}
```

**4. Registering a Transactional Callback**

```java
import javax.activity.TransactionSynchronizationRegistry;

public class MyCallback implements TransactionSynchronizationRegistry {

    @Override
    public void registerInterposedSynchronization(Synchronization sync) {
        // Register a synchronization object for transaction
    }
    
    @Override
    public void registerSynchronization(Synchronization sync) {
        // Register a synchronization object for transaction
    }
}
```

**5. Using a Transaction Synchronization Context**

```java
import javax.activity.TransactionSynchronizationContext;

public class MySynchronizationContext implements TransactionSynchronizationContext {

    @Override
    public void beforeCompletion() {
        // Perform any necessary actions before transaction completes
    }

    @Override
    public void afterCompletion(int status) {
        // Perform any necessary actions after transaction completes, status indicates success/failure
    }
}
```

**6. Suspending and Resuming a Transaction**

```java
import javax.activity.Transaction;

try {
    Transaction tx = TransactionManagerFactory.getTransactionManager().getTransaction();
    tx.suspend();
    // Perform non-transactional operations
    tx.resume();
    // Continue transactional operations
} catch (Exception e) {
    tx.rollback();
}
```

**7. Committing, Rolling Back, and Marking Transactions Rolled Back**

```java
import javax.activity.Transaction;

Transaction tx = TransactionManagerFactory.getTransactionManager().getTransaction();
try {
    tx.commit();
} catch (Exception e) {
    tx.rollback();
} finally {
    if (tx.getStatus() == Status.ROLLEDBACK) {
        tx.markRollbackOnly();
    }
}
```

**8. Using the TransactionFactory**

```java
import javax.activity.TransactionFactory;

TransactionFactory tf = TransactionFactoryFactory.getTransactionFactory();
Transaction tx = tf.newTransaction();
// Use transaction as needed
```

**9. Creating a Transaction Descriptor**

```java
import javax.transaction.xa.XAException;
import javax.transaction.xa.XAResource;
import javax.transaction.xa.Xid;
import javax.transaction.xa.XADescriptor;

public class MyXADescriptor implements XADescriptor {

    @Override
    public byte[] toByteArray() throws XAException {
        return new byte[0];
    }

    @Override
    public void fromByteArray(byte[] data) throws XAException {
        // Do nothing
    }

    @Override
    public String getXAResourceName() {
        return null;
    }
}
```

**10. Creating a JTS Connector Architecture (JCA) Resource Adapter**

```java
import javax.resource.ResourceAdapter;

public class MyResourceAdapter implements ResourceAdapter {

    @Override
    public XAResource[] getXAResources(Xid[] xids) {
        return new XAResource[0];
    }
}
```

**11. Using the TransactionManagerFactory**

```java
import javax.activity.TransactionManagerFactory;

TransactionManagerFactory tmFactory = TransactionManagerFactory.getTransactionManagerFactory();
TransactionManager tm = tmFactory.getTransactionManager();
```

**12. Using the TransactionSynchronizationManager**

```java
import javax.transaction.TransactionSynchronizationManager;

TransactionSynchronizationManager.registerSynchronization(new MySynchronization());
```

**13. Using the TransactionSynchronization Registry**

```java
import javax.activity.TransactionSynchronizationRegistry;

TransactionSynchronizationRegistry registry = TransactionSynchronizationManager.getTransactionSynchronizationRegistry();
registry.registerInterposedSynchronization(new MySynchronization());
```

**14. Using the TransactionTimeoutManager**

```java
import javax.transaction.TransactionTimeoutManager;

TransactionTimeoutManager timeoutManager = TransactionTimeoutManagerFactory.getTransactionTimeoutManager();
timeoutManager.setTransactionTimeout(30);
```

**15. Using the TransactionId**

```java
import javax.transaction.TransactionId;

TransactionId id = TransactionManagerFactory.getTransactionManager().getTransaction().getTransactionId();
```

**16. Using the TransactionState**

```java
import javax.transaction.TransactionState;

TransactionState state = TransactionManagerFactory.getTransactionManager().getTransaction().getStatus();
```

**17. Using the TransactionType**

```java
import javax.transaction.TransactionType;

TransactionType type = TransactionManagerFactory.getTransactionManager().getTransaction().getTransactionType();
```

**18. Using the Xid**

```java
import javax.transaction.xa.Xid;

Xid id = new MyXid("id");
```

**19. Using the XAResource**

```java
import javax.transaction.xa.XAResource;

XAResource resource = TransactionManagerFactory.getTransactionManager().getTransaction().getResourceManager();
```

**20. Using the XADescriptor**

```java
import javax.transaction.xa.XADescriptor;

XADescriptor descriptor = TransactionManagerFactory.getTransactionManager().getTransaction().getResourceDescriptor();
```

**21. Using the XAResourceManager**

```java
import javax.transaction.xa.XAResourceManager;

XAResourceManager rm = TransactionManagerFactory.getTransactionManager().getTransaction().getResourceManager().getXAResourceManager();
```

**22. Using the TransactionManager**

```java
import javax.activity.TransactionManager;

TransactionManager tm = TransactionManagerFactory.getTransactionManager();
```

**23. Using the TransactionFactory**

```java
import javax.transaction.TransactionFactory;

TransactionFactory tf = TransactionFactoryFactory.getTransactionFactory();
```

**24. Using the XAResourceFactory**

```java
import javax.transaction.xa.XAResourceFactory;

XAResourceFactory rf = XAResourceFactoryFactory.getXAResourceFactory();
```

**25. Using the XAClass**

```java
import javax.transaction.xa.XAClass;

XAClass xaClass = new XAClass(XAClass.XAResource);
```

**26. Using the XAException**

```java
import javax.transaction.xa.XAException;

try {
    // Do something that could throw an XAException
} catch (XAException e) {
    // Handle the exception
}
```

**27. Using the XAResource**

```java
import javax.transaction.xa.XAResource;

XAResource resource = TransactionManagerFactory.getTransactionManager().getTransaction().getResourceManager();
```

**28. Using the XAException**

```java
import javax.transaction.xa.XAException;

try {
    // Do something that could throw an XAException
} catch (XAException e) {
    // Handle the exception
}
```

**29. Using the Xid**

```java
import javax.transaction.xa.Xid;

Xid id = TransactionManagerFactory.getTransactionManager().getTransaction().getTransactionId();
```

**30. Using the XAState**

```java
import javax.transaction.xa.XAState;

XAState state = TransactionManagerFactory.getTransactionManager().getTransaction().getResourceManager().getXAResource().getState();
```

**31. Using the Transaction**

```java
import javax.transaction.Transaction;

Transaction tx = TransactionManagerFactory.getTransactionManager().getTransaction();
```

**32. Using the TransactionType**

```java
import javax.transaction.TransactionType;

TransactionType type = TransactionManagerFactory.getTransactionManager().getTransaction().getTransactionType();
```

**33. Using the TransactionIsolation**

```java
import javax.transaction.TransactionIsolation;

TransactionIsolation isolationLevel = TransactionManagerFactory.getTransactionManager().getTransaction().getTransactionIsolationLevel();
```

**34. Using the TransactionTimeout**

```java
import javax.transaction.TransactionTimeout;

TransactionTimeout timeout = TransactionManagerFactory.getTransactionManager().getTransaction().getTimeout();
```

**35. Using the TransactionTimeoutManager**

```java
import javax.transaction.TransactionTimeoutManager;

TransactionTimeoutManager timeoutManager = TransactionFactoryFactory.getTransactionTimeoutManager();
```

**36. Using the TransactionSynchronization**

```java
import javax.transaction.Synchronization;

TransactionSynchronization synchronization = TransactionManagerFactory.getTransactionManager().getTransaction().getSynchronization();
```

**37. Using the TransactionSynchronizationRegistry**

```java
import javax.transaction.TransactionSynchronizationRegistry;

TransactionSynchronizationRegistry registry = TransactionManagerFactory.getTransactionManager().getTransaction().getSynchronizationRegistry();
```

**38. Using the TransactionFactory**

```java
import javax.transaction.TransactionFactory;

TransactionFactory factory = TransactionFactoryFactory.getTransactionFactory();
```

**39. Using the XAResourceFactory**

```java
import javax.transaction.xa.XAResourceFactory;

XAResourceFactory resourceFactory = XAResourceFactoryFactory.getXAResourceFactory();
```

**40. Using the Transaction**

```java
import javax.transaction.Transaction;

Transaction transaction = TransactionManagerFactory.getTransactionManager().getTransaction();
```

**41. Using the TransactionManager**

```java
import javax.activity.TransactionManager;

TransactionManager manager = TransactionManagerFactory.getTransactionManager();
```

**42. Using the TransactionFactory**

```java
import javax.transaction.TransactionFactory;

TransactionFactory factory = TransactionFactoryFactory.getTransactionFactory();
```

**43. Using the XAException**

```java
import javax.transaction.xa.XAException;

try {
    // Do something that could throw an XAException
} catch (XAException e) {
    // Handle the exception
}
```

**44. Using the XAResource**

```java
import javax.transaction.xa.XAResource;

XAResource resource = null;
try {
    // Do something to retrieve the XAResource
} catch (XAException e) {
    // Handle the exception
}
```

**45. Using the XADescriptor**

```java
import javax.transaction.xa.XADescriptor;

XADescriptor descriptor = null;
try {
    // Do something to retrieve the XADescriptor
} catch (XAException e) {
    // Handle the exception
}
```

**46. Using the XAResourceManager**

```java
import javax.transaction.xa.XAResourceManager;

XAResourceManager resourceManager = null;
try {
    // Do something to retrieve the XAResourceManager
} catch (XAException e) {
    // Handle the exception
}
```

**47. Using the Transaction**

```java
import javax.transaction.Transaction;

Transaction transaction = null;
try {
    // Do something to retrieve the Transaction
} catch (Exception e) {
    // Handle the exception
}
```

**48. Using the TransactionManager**

```java
import javax.activity.TransactionManager;

TransactionManager transactionManager = null;
try {
    // Do something to retrieve the TransactionManager
} catch (Exception e) {
    // Handle the exception
}
```

**49. Using the TransactionFactory**

```java
import javax.transaction.TransactionFactory;

TransactionFactory transactionFactory = null;
try {
    // Do something to retrieve the TransactionFactory
} catch (Exception e) {
    // Handle the exception
}
```

**50. Using the XAException**

```java
import javax.transaction.xa.XAException;

try {
    // Do something that could throw an XAException
} catch (XAException e) {
    // Handle the exception
}
```