VariableExistsExpressionFunction (Flowable - Engine Common 6.8.1 API)

java.lang.Object
- org.flowable.common.engine.impl.el.function.AbstractFlowableVariableExpressionFunction
- - org.flowable.common.engine.impl.el.function.VariableExistsExpressionFunction

All Implemented Interfaces:

FlowableFunctionDelegate, FlowableAstFunctionCreator
```
public class VariableExistsExpressionFunction
extends AbstractFlowableVariableExpressionFunction
```
Returns whether or not a variable with the given name exists when fetched through the provided variable scope.

Author:

Joram Barrez

- Field Summary
  - Fields inherited from class org.flowable.common.engine.impl.el.function.AbstractFlowableVariableExpressionFunction
    functionName, functionNamesOptions, method, variableScopeName
- Constructor Summary
  
  Constructors
  Constructor Description
  
  VariableExistsExpressionFunction()
- Method Summary
  
  All Methods Static Methods Concrete Methods
  Modifier and Type Method Description
  
  static boolean exists(VariableContainer variableContainer, String variableName)
  - Methods inherited from class org.flowable.common.engine.impl.el.function.AbstractFlowableVariableExpressionFunction
    createFunction, createVariableNameNode, findMethod, functionMethod, getFunctionNames, getVariableValue, localName, localNames, prefix, prefixes, valuesAreNumbers
  - Methods inherited from class java.lang.Object
    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail
- VariableExistsExpressionFunction
```
public VariableExistsExpressionFunction()
```

Method Detail

exists

public static boolean exists(VariableContainer variableContainer,
                             String variableName)