ResourceLockManager (Fedora Repository Kernel API 6.4.1 API)

```
public interface ResourceLockManager
```
Responsible for managing write locks on Fedora resources

Author:

pwinckles

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`acquireExclusive(String txId, FedoraId resourceId)`	Acquires an exclusive lock on the resource, associating it to the txId.
`void`	`acquireNonExclusive(String txId, FedoraId resourceId)`	Acquires a non-exclusive lock on the resource, associating it to the txId.
`void`	`releaseAll(String txId)`	Releases all of the locks held by the transaction

- Method Detail
  - acquireExclusive
```
void acquireExclusive(String txId,
                      FedoraId resourceId)
```
    Acquires an exclusive lock on the resource, associating it to the txId. If the lock is held by a different transaction, an exception is thrown. If the lock is already held by the same transaction, then it returns successfully.
    
    Parameters:
    
    txId - the transaction id to associate the lock to
    
    resourceId - the resource to lock
    
    Throws:
    
    ConcurrentUpdateException - when lock cannot be acquired
  - acquireNonExclusive
```
void acquireNonExclusive(String txId,
                         FedoraId resourceId)
```
    Acquires a non-exclusive lock on the resource, associating it to the txId. If an exclusive lock is held by a different transaction, an exception is thrown. Otherwise, a non-exclusive lock on the resource is acquired.
    
    Parameters:
    
    txId - the transaction id to associate the lock to
    
    resourceId - the resource to lock
    
    Throws:
    
    ConcurrentUpdateException - when lock cannot be acquired
  - releaseAll
```
void releaseAll(String txId)
```
    Releases all of the locks held by the transaction
    
    Parameters:
    
    txId - the transaction id