SpecialVariableProcessor

All Known Implementing Classes:

EnvironmentVariableProcessor, JCPSpecialVariableProcessor, MavenPropertiesImporter, PreprocessTask
```
public interface SpecialVariableProcessor
```
The interface describes a special variable processor which will be called for variables met by a preprocessor in expressions

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`Value`	`getVariable(java.lang.String varName, PreprocessorContext context)`	Get the value for the variable
`java.lang.String[]`	`getVariableNames()`	Get all variable names allowed by the processor as an array, all names must be in lower case
`void`	`setVariable(java.lang.String varName, Value value, PreprocessorContext context)`	Set a value to the variable

- Method Detail
  - getVariableNames
```
@MustNotContainNull
java.lang.String[] getVariableNames()
```
    Get all variable names allowed by the processor as an array, all names must be in lower case
    
    Returns:
    
    allowed variable names as a String array
  - getVariable
```
Value getVariable(java.lang.String varName,
                  PreprocessorContext context)
```
    Get the value for the variable
    
    Parameters:
    
    varName - the variable name, must not be null
    
    context - the preprocessor context, it can be null
    
    Returns:
    
    the value, it must not return null because it will notified preprocessor that it supports the variable
  - setVariable
```
void setVariable(java.lang.String varName,
                 Value value,
                 PreprocessorContext context)
```
    Set a value to the variable
    
    Parameters:
    
    varName - the variable name, must not be null
    
    value - the value to be set to the variable, must not be null
    
    context - the preprocessor context, it can be null