GuacamoleFilter (guacamole-common 1.5.5 API)

```
public interface GuacamoleFilter
```
Interface which provides for the filtering of individual instructions. Each filtered instruction may be allowed through untouched, modified, replaced, dropped, or explicitly denied.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`GuacamoleInstruction`	`filter(GuacamoleInstruction instruction)`	Applies the filter to the given instruction, returning the original instruction, a modified version of the original, or null, depending on the implementation.

- Method Detail
  - filter
```
GuacamoleInstruction filter(GuacamoleInstruction instruction)
                     throws GuacamoleException
```
    Applies the filter to the given instruction, returning the original instruction, a modified version of the original, or null, depending on the implementation.
    
    Parameters:
    
    instruction - The instruction to filter.
    
    Returns:
    
    The original instruction, if the instruction is to be allowed, a modified version of the instruction, if the instruction is to be overridden, or null, if the instruction is to be dropped.
    
    Throws:
    
    GuacamoleException - If an error occurs filtering the instruction, or if the instruction must be explicitly denied.