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12.3. The Transaction Manager

Use the following to obtain the TransactionManager from the cache: 
TransactionManager tm = cache.getAdvancedCache().getTransactionManager();
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To execute a sequence of operations within transaction, wrap these with calls to methods begin() and commit() or rollback() on the TransactionManager: 
tm.begin();
Object value = cache.get("A");
cache.remove("A");
Object prev = cache.put("B", value);
if (prev == null)
    tm.commit();
else
    tm.rollback();
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Note

If a cache method returns a CacheException (or a subclass of the CacheException) within the scope of a JTA transaction, the transaction is automatically marked to be rolled back.
To obtain a reference to a Red Hat JBoss Data Grid XAResource, use the following API: 
XAResource xar = cache.getAdvancedCache().getXAResource();
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