TotalOrderManager (Red Hat Data Grid 7.3.9 API)

java.lang.Object
- org.infinispan.transaction.totalorder.TotalOrderManager

```
public class TotalOrderManager
extends Object
```
This class behaves as a synchronization point between incoming transactions (totally ordered) and between incoming transactions and state transfer.
Main functions:
- ensure an order between prepares before sending them to the thread pool, i.e. non-conflicting prepares can be processed concurrently;
- ensure that the state transfer waits for the previous delivered prepares;
- ensure that the prepare waits for state transfer in progress.
Since:

5.3

Author:

Pedro Ruivo

Constructor Summary

Constructors
Constructor Description

TotalOrderManager()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`ensureOrder(org.infinispan.transaction.impl.TotalOrderRemoteTransactionState state, Collection<?> keysModified)`	It ensures the validation order for the transaction corresponding to the prepare command.
`boolean`	`hasAnyLockAcquired()`
`void`	`notifyStateTransferEnd()`	It notifies the end of the state transfer possibly unblock waiting prepares.
`Collection<TotalOrderLatch>`	`notifyStateTransferStart(int topologyId, boolean isRebalance)`	It notifies that a state transfer is about to start.
`void`	`release(org.infinispan.transaction.impl.TotalOrderRemoteTransactionState state)`	Release the locked key possibly unblock waiting prepares.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - TotalOrderManager
```
public TotalOrderManager()
```
- Method Detail
  - ensureOrder
```
public final void ensureOrder(org.infinispan.transaction.impl.TotalOrderRemoteTransactionState state,
                              Collection<?> keysModified)
                       throws InterruptedException
```
    It ensures the validation order for the transaction corresponding to the prepare command. This allow the prepare command to be moved to a thread pool.
    
    Parameters:
    
    state - the total order prepare state
    
    Throws:
    
    InterruptedException
  - release
```
public final void release(org.infinispan.transaction.impl.TotalOrderRemoteTransactionState state)
```
    Release the locked key possibly unblock waiting prepares.
    
    Parameters:
    
    state - the state
  - notifyStateTransferStart
```
public final Collection<TotalOrderLatch> notifyStateTransferStart(int topologyId,
                                                                  boolean isRebalance)
```
    It notifies that a state transfer is about to start.
    
    Parameters:
    
    topologyId - the new topology ID
    
    Returns:
    
    the current pending prepares
  - notifyStateTransferEnd
```
public final void notifyStateTransferEnd()
```
    It notifies the end of the state transfer possibly unblock waiting prepares.
  - hasAnyLockAcquired
```
public final boolean hasAnyLockAcquired()
```