Filter

All Known Implementing Classes:

AbstractFilter, AbstractPatternFilter, FileFilterAdapter, PatternFileFilter, PatternURLFilter
```
public interface Filter<T>
```
Generic Filter specification, whose implementations define if candidate objects should be accepted or not.

Since:

2.0

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`boolean`	`accept(T candidate)`	Method that is invoked to determine if a candidate instance should be accepted or not.
`void`	`initialize(org.apache.maven.plugin.logging.Log log)`	Initializes this Filter, and assigns the supplied Log for use by this Filter.
`boolean`	`isInitialized()`

- Method Detail
  - initialize
```
void initialize(org.apache.maven.plugin.logging.Log log)
```
    Initializes this Filter, and assigns the supplied Log for use by this Filter.
    
    Parameters:
    
    log - The non-null Log which should be used by this Filter to emit log messages.
  - isInitialized
```
boolean isInitialized()
```
    Returns:
    
    true if this Filter has been properly initialized (by a call to the initialize method).
  - accept
```
boolean accept(T candidate)
        throws java.lang.IllegalStateException
```
    Method that is invoked to determine if a candidate instance should be accepted or not. Implementing classes should be prepared to handle null candidate objects.
    
    Parameters:
    
    candidate - The candidate that should be tested for acceptance by this Filter.
    
    Returns:
    
    true if the candidate is accepted by this Filter and false otherwise.
    
    Throws:
    
    java.lang.IllegalStateException - if this Filter is not initialized by a call to the initialize method before calling this matchAtLeastOnce method.