GridCacheLockCallback (Ignite 2.17.0)

```
public interface GridCacheLockCallback
```
Lock and Unlock callbacks.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`onFreed(GridDistributedCacheEntry entry)`	Called when entry has no more candidates.
`void`	`onLocked(GridDistributedCacheEntry entry)`	Called when entry gets a first candidate.
`void`	`onOwnerChanged(GridCacheEntryEx entry, GridCacheMvccCandidate owner)`	Called when entry lock ownership changes.

- Method Detail
  - onLocked
```
void onLocked(GridDistributedCacheEntry entry)
```
    Called when entry gets a first candidate. This call happens within entry internal synchronization.
    
    Parameters:
    
    entry - Entry.
  - onOwnerChanged
```
void onOwnerChanged(GridCacheEntryEx entry,
                    GridCacheMvccCandidate owner)
```
    Called when entry lock ownership changes. This call happens outside of synchronization so external callbacks can be made from this call.
    
    Parameters:
    
    entry - Entry.
    
    owner - Current owner.
  - onFreed
```
void onFreed(GridDistributedCacheEntry entry)
```
    Called when entry has no more candidates. This call happens within entry internal synchronization.
    
    Parameters:
    
    entry - Entry