JdbcConnectionProvider (Flink : Connectors : JDBC 3.1.1-1.17 API)

All Known Subinterfaces:

XaFacade

All Known Implementing Classes:

SimpleJdbcConnectionProvider
```
@Internal
public interface JdbcConnectionProvider
```
JDBC connection provider.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`closeConnection()`	Close possible existing connection.
`Connection`	`getConnection()`	Get existing connection.
`Connection`	`getOrEstablishConnection()`	Get existing connection or establish an new one if there is none.
`boolean`	`isConnectionValid()`	Check whether possible existing connection is valid or not through `Connection.isValid(int)`.
`Connection`	`reestablishConnection()`	Close possible existing connection and establish an new one.

- Method Detail
  - getConnection
```
@Nullable
Connection getConnection()
```
    Get existing connection.
    
    Returns:
    
    existing connection
  - isConnectionValid
```
boolean isConnectionValid()
                   throws SQLException
```
    Check whether possible existing connection is valid or not through Connection.isValid(int).
    
    Returns:
    
    true if existing connection is valid
    
    Throws:
    
    SQLException - sql exception throw from Connection.isValid(int)
  - getOrEstablishConnection
```
Connection getOrEstablishConnection()
                             throws SQLException,
                                    ClassNotFoundException
```
    Get existing connection or establish an new one if there is none.
    
    Returns:
    
    existing connection or newly established connection
    
    Throws:
    
    SQLException - sql exception
    
    ClassNotFoundException - driver class not found
  - closeConnection
```
void closeConnection()
```
    Close possible existing connection.
  - reestablishConnection
```
Connection reestablishConnection()
                          throws SQLException,
                                 ClassNotFoundException
```
    Close possible existing connection and establish an new one.
    
    Returns:
    
    newly established connection
    
    Throws:
    
    SQLException - sql exception
    
    ClassNotFoundException - driver class not found