com.h3c.util.persistence.cassandra.lockmgr

Interface CassandraLockManager

public interface CassandraLockManager

CassandraLockManager is the interface between the DAO and the lock manager. The DAO uses the executeCriticalSection(com.h3c.util.Procedure<T>) to execute a transaction based query. The implementation of the method encapsulates the begin and end of a given transaction.

Method Summary

Methods

Modifier and Type	Method and Description
<T> T	executeCriticalSection(Procedure<T> procedure) This method executes the Critical section.

Method Detail

executeCriticalSection

<T> T executeCriticalSection(Procedure<T> procedure)
                         throws Exception

This method executes the Critical section. The implementation should encapsulate the begin() and end() of a transaction from the client. The structure of the implementation looks like this.

 
     executeCriticalSection(Procedure procedure) {
         // Begin the transaction
         begin();    
         // Try critical section
         try {
            return procedure.execute();
         } finally {
            // End Transaction
            end();
         }
      }
  
  

Parameters:

procedure - This is the procedure object. See Procedure for more details.

Returns:

The transport object after execution of the critical section.

Throws:

Exception