DataConnectionService (Hazelcast Root 5.4.0-SNAPSHOT API)

```
public interface DataConnectionService
```
The interface provides access to DataConnections for Jet processors. A Jet processor can obtain a reference to the service via ProcessorMetaSupplier.Context.dataConnectionService().
Data connections can be created via one of the following ways:
- statically in the configuration
- dynamically via Config.addDataConnectionConfig(DataConnectionConfig)
- via SQL CREATE DATA CONNECTION ... command
Since:

5.3

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`<T extends DataConnection> T`	`getAndRetainDataConnection(java.lang.String name, java.lang.Class<T> clazz)`	Returns `DataConnection` with the given name and `retain` it (calls `DataConnection.retain()`).

- Method Detail
  - getAndRetainDataConnection
```
@Nonnull
<T extends DataConnection> T getAndRetainDataConnection(java.lang.String name,
                                                        java.lang.Class<T> clazz)
```
    Returns DataConnection with the given name and `retain` it (calls DataConnection.retain()). The caller is responsible for calling DataConnection.release() after it is done with the DataConnection.
    Type is checked against the provided `clazz` argument.
    
    Parameters:
    
    name - name of the DataConnection
    
    clazz - expected type of the DataConnection
    
    Throws:
    
    HazelcastException - if the requested DataConnection doesn't exist, or has a different type than `clazz`