VariableMapper (Camunda Platform Javadocs 7.20.0-SNAPSHOT)

java.lang.Object
- org.camunda.bpm.engine.impl.javax.el.VariableMapper

```
public abstract class VariableMapper
extends Object
```
The interface to a map between EL variables and the EL expressions they are associated with.

Constructor Summary

Constructors
Constructor Description

VariableMapper()

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`abstract ValueExpression`	`resolveVariable(String variable)`	Resolves the specified variable name to a ValueExpression.
`abstract ValueExpression`	`setVariable(String variable, ValueExpression expression)`	Assign a ValueExpression to an EL variable, replacing any previously assignment to the same variable.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - VariableMapper
```
public VariableMapper()
```
- Method Detail
  - resolveVariable
```
public abstract ValueExpression resolveVariable(String variable)
```
    Resolves the specified variable name to a ValueExpression.
    
    Parameters:
    
    variable - The variable name
    
    Returns:
    
    the ValueExpression assigned to the variable, null if there is no previous assignment to this variable.
  - setVariable
```
public abstract ValueExpression setVariable(String variable,
                                            ValueExpression expression)
```
    Assign a ValueExpression to an EL variable, replacing any previously assignment to the same variable. The assignment for the variable is removed if the expression is null.
    
    Parameters:
    
    variable - The variable name
    
    expression - The ValueExpression to be assigned to the variable.
    
    Returns:
    
    The previous ValueExpression assigned to this variable, null if there is no previous assignment to this variable.