Helper (Apache Calcite Avatica API)

```
public class Helper
extends Object
```
Utility methods, mainly concerning error-handling.

Fields
Modifier and Type	Field and Description
`static Helper`	`INSTANCE`

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`SQLClientInfoException`	`clientInfo()`
`SQLException`	`closed()`
`SQLException`	`createException(String message)`
`SQLException`	`createException(String message, Exception e)`
`SQLException`	`createException(String message, String sql, Exception e)`
`RuntimeException`	`todo()`
`SQLException`	`toSQLException(SQLException exception)`
`SQLException`	`unsupported()`
`RuntimeException`	`wrap(String message, Exception e)`

public RuntimeException wrap(String message,
                             Exception e)

public SQLException createException(String message,
                                    Exception e)

public SQLException createException(String message,
                                    String sql,
                                    Exception e)

public SQLException createException(String message)

public SQLException toSQLException(SQLException exception)

public SQLClientInfoException clientInfo()

Class Helper