JexlException.Variable (Apache Commons JEXL 3.0 API)

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java.lang.Object
- java.lang.Throwable
- - java.lang.Exception
  - - java.lang.RuntimeException
    - - org.apache.commons.jexl3.JexlException
      - org.apache.commons.jexl3.JexlException.Variable

All Implemented Interfaces:

Serializable

Enclosing class:

JexlException
```
public static class JexlException.Variable
extends JexlException
```
Thrown when a variable is unknown.

Since:

3.0

See Also:
Serialized Form

Nested Class Summary
- Nested classes/interfaces inherited from class org.apache.commons.jexl3.JexlException
  JexlException.Ambiguous, JexlException.Assignment, JexlException.Break, JexlException.Cancel, JexlException.Continue, JexlException.Method, JexlException.Operator, JexlException.Parsing, JexlException.Property, JexlException.Return, JexlException.Tokenization, JexlException.Variable

Constructor Summary

Constructors
Constructor and Description
`JexlException.Variable(JexlNode node, String var, boolean undef)` Creates a new Variable exception instance.

Method Summary

Methods
Modifier and Type	Method and Description
`protected String`	`detailedMessage()` Accesses detailed message.
`String`	`getVariable()`
`boolean`	`isUndefined()` Whether the variable causing an error is undefined or evaluated as null.

Methods inherited from class org.apache.commons.jexl3.JexlException
clean, getInfo, getInfo, getMessage, methodError, operatorError, parserError, propertyError, variableError

Methods inherited from class java.lang.Throwable
addSuppressed, fillInStackTrace, getCause, getLocalizedMessage, getStackTrace, getSuppressed, initCause, printStackTrace, printStackTrace, printStackTrace, setStackTrace, toString

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

- Constructor Detail
  - JexlException.Variable
```
public JexlException.Variable(JexlNode node,
                      String var,
                      boolean undef)
```
    Creates a new Variable exception instance.
    
    Parameters:
    node - the offending ASTnode
    var - the unknown variable
    undef - whether the variable is undefined or evaluated as null
- Method Detail
  - isUndefined
```
public boolean isUndefined()
```
    Whether the variable causing an error is undefined or evaluated as null.
    
    Returns:
    true if undefined, false otherwise
  - getVariable
```
public String getVariable()
```
    Returns:
    the variable name
  - detailedMessage
```
protected String detailedMessage()
```
    Description copied from class: JexlException
    
    Accesses detailed message.
    
    Overrides:
    
    detailedMessage in class JexlException
    
    Returns:
    the message

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