Expression (Camel :: API 3.18.2 API)

All Known Subinterfaces:

StaticExpression
```
public interface Expression
```
An expression provides a plugin strategy for evaluating expressions on a message exchange. An expression should be thread-safe and be able to evaluate concurrently by different threads with different exchanges. Any initialization logic should be done by the init(CamelContext) method which allows to prepare the expressions such as wiring in resources, pre-parsing and what else.

See Also:

StaticExpression

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`<T> T`	`evaluate(Exchange exchange, Class<T> type)`	Returns the value of the expression on the given exchange
`default void`	`init(CamelContext context)`	Initialize the expression with the given camel context

- Method Detail
  - evaluate
```
<T> T evaluate(Exchange exchange,
               Class<T> type)
```
    Returns the value of the expression on the given exchange
    
    Parameters:
    
    exchange - the message exchange on which to evaluate the expression
    
    type - the expected type of the evaluation result
    
    Returns:
    
    the value of the expression
  - init
```
default void init(CamelContext context)
```
    Initialize the expression with the given camel context
    
    Parameters:
    
    context - the camel context