RemoteLockCommand (Red Hat Data Grid 7.3.9 API)

All Superinterfaces:

org.infinispan.commands.ReplicableCommand

All Known Subinterfaces:

TransactionalRemoteLockCommand
```
public interface RemoteLockCommand
extends org.infinispan.commands.ReplicableCommand
```
Simple interface to extract all the keys that may need to be locked.
A CacheRpcCommand that needs to acquire locks should implement this interface. This way, Infinispan tries to provide a better management to optimize the system resources usage.

Since:

8.0

Author:

Pedro Ruivo

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`Object`	`getKeyLockOwner()`	It returns the lock owner of the key.
`Collection<?>`	`getKeysToLock()`	It returns a `Collection` with the keys to be lock.
`boolean`	`hasSkipLocking()`	It checks if this command should acquire locks.
`boolean`	`hasZeroLockAcquisition()`

Methods inherited from interface org.infinispan.commands.ReplicableCommand
canBlock, getCommandId, invoke, invokeAsync, isReturnValueExpected, isSuccessful, perform, readFrom, setOrigin, writeTo

- Method Detail
  - getKeysToLock
```
Collection<?> getKeysToLock()
```
    It returns a Collection with the keys to be lock.
    It may return an empty collection if no keys needs to be locked independently of the return value of hasSkipLocking(). It may contains duplicated keys and null is not a valid return value.
    
    Returns:
    
    a Collection of keys to lock.
  - getKeyLockOwner
```
Object getKeyLockOwner()
```
    It returns the lock owner of the key.
    Usually, in transaction caches it is the GlobalTransaction and in non-transactional caches the CommandInvocationId.
    
    Returns:
    
    the lock owner of the key.
  - hasZeroLockAcquisition
```
boolean hasZeroLockAcquisition()
```
    Returns:
    
    it the locks should be acquire with 0 (zero) acquisition timeout.
  - hasSkipLocking
```
boolean hasSkipLocking()
```
    It checks if this command should acquire locks.
    
    Returns:
    
    true if locks should be acquired for the keys in getKeysToLock().