Package io.ocfl.core.lock

Class DbObjectLock

java.lang.Object

io.ocfl.core.lock.DbObjectLock

All Implemented Interfaces:

ObjectLock

public class DbObjectLock
extends Object
implements ObjectLock

Lock implementation that writes to a DB table to lock a resource. The row is deleted when the lock is released. The lock expires if the row has not been deleted within a configurable period of time.

Constructor Summary

Constructors

Constructor	Description
DbObjectLock(DbType dbType, String tableName, DataSource dataSource, Duration maxLockDuration)

Method Summary

Modifier and Type	Method	Description
void	doInWriteLock(String objectId, Runnable doInLock)	Executes the code block after securing a write lock on the objectId.
<T> T	doInWriteLock(String objectId, Callable<T> doInLock)	Executes the code block after securing a write lock on the objectId.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DbObjectLock

public DbObjectLock(DbType dbType,
                    String tableName,
                    DataSource dataSource,
                    Duration maxLockDuration)

Method Detail

doInWriteLock

public void doInWriteLock(String objectId,
                          Runnable doInLock)

Executes the code block after securing a write lock on the objectId. The lock is released after the block completes.

Specified by:

doInWriteLock in interface ObjectLock

Parameters:

objectId - id of the object

doInLock - block to execute within the lock

doInWriteLock

public <T> T doInWriteLock(String objectId,
                           Callable<T> doInLock)

Executes the code block after securing a write lock on the objectId. The lock is released after the block completes.

Specified by:

doInWriteLock in interface ObjectLock

Type Parameters:

T - return type

Parameters:

objectId - id of the object

doInLock - block to execute within the lock

Returns:

object