ExpressionManager (Camunda Platform Javadocs 7.18.15-ee)

All Known Implementing Classes:

CdiExpressionManager, JuelExpressionManager, MockExpressionManager, SpringExpressionManager
```
public interface ExpressionManager
```
Central manager for all expressions.

Process parsers will use this to build expression objects that are stored in the process definitions.

Then also this class is used as an entry point for runtime evaluation of the expressions.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`addFunction(java.lang.String name, java.lang.reflect.Method function)`	Adds a custom function to the expression manager that can be used in expression evaluation later on.
`Expression`	`createExpression(java.lang.String expression)`

- Method Detail
  - createExpression
```
Expression createExpression(java.lang.String expression)
```
    Parameters:
    
    expression -
    
    Returns:
    
    a parsed expression
  - addFunction
```
void addFunction(java.lang.String name,
                 java.lang.reflect.Method function)
```
    Adds a custom function to the expression manager that can be used in expression evaluation later on. Ideally, use this in the setup phase of the expression manager, i.e. before the first invocation of createExpression.
    
    Parameters:
    
    name -
    
    function -