T - the result type@FunctionalInterface public interface ConnectionCallback<T>
This is particularly useful for delegating to existing data access code
 that expects a Connection to work on and throws ResourceException. For newly
 written code, it is strongly recommended to use CciTemplate's more specific
 execute variants.
CciTemplate.execute(ConnectionCallback), 
CciTemplate.execute(javax.resource.cci.InteractionSpec, javax.resource.cci.Record), 
CciTemplate.execute(javax.resource.cci.InteractionSpec, RecordCreator, RecordExtractor)| Modifier and Type | Method and Description | 
|---|---|
| T | doInConnection(Connection connection,
              ConnectionFactory connectionFactory)Gets called by  CciTemplate.executewith an active CCI Connection. | 
@Nullable T doInConnection(Connection connection, ConnectionFactory connectionFactory) throws ResourceException, SQLException, DataAccessException
CciTemplate.execute with an active CCI Connection.
 Does not need to care about activating or closing the Connection, or handling
 transactions.
 If called without a thread-bound CCI transaction (initiated by CciLocalTransactionManager), the code will simply get executed on the CCI Connection with its transactional semantics. If CciTemplate is configured to use a JTA-aware ConnectionFactory, the CCI Connection and thus the callback code will be transactional if a JTA transaction is active.
Allows for returning a result object created within the callback, i.e.
 a domain object or a collection of domain objects. Note that there's special
 support for single step actions: see the CciTemplate.execute
 variants. A thrown RuntimeException is treated as application exception:
 it gets propagated to the caller of the template.
connection - active CCI ConnectionconnectionFactory - the CCI ConnectionFactory that the Connection was
 created with (gives access to RecordFactory and ResourceAdapterMetaData)null if noneResourceException - if thrown by a CCI method, to be auto-converted
 to a DataAccessExceptionSQLException - if thrown by a ResultSet method, to be auto-converted
 to a DataAccessExceptionDataAccessException - in case of custom exceptionsConnectionFactory.getRecordFactory(), 
ConnectionFactory.getMetaData(), 
CciTemplate.execute(javax.resource.cci.InteractionSpec, RecordCreator, RecordExtractor)