Transformer (Red Hat Data Grid 7.3.9 API)

```
public interface Transformer
```
Convert objects (cache keys only) from their original Java types to a String representation (which is suitable to be used in a Lucene index) and vice versa. Transformers are needed only for custom types. Primitive types (boxed), java.lang.String, java.util.UUID and byte arrays are internally handled without the need of a user-supplied Transformer.
Implementations must be thread-safe! It is recommended they are also stateless.

Since:

4.0

Author:

Manik Surtani

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`Object`	`fromString(String str)`	Transforms a String into an Object.
`String`	`toString(Object obj)`	Transforms an Object into a String.

- Method Detail
  - fromString
```
Object fromString(String str)
```
    Transforms a String into an Object.
    
    Parameters:
    
    str - cannot be null
    
    Returns:
    
    the Object that is encoded in the given String
  - toString
```
String toString(Object obj)
```
    Transforms an Object into a String.
    
    Parameters:
    
    obj - cannot be null
    
    Returns:
    
    the String representation of the object