CandidateHarvester

All Implemented Interfaces:
```
public interface CandidateHarvester

                    
```
A CandidateHarvester gathers a certain kind of Candidates (e.g. host, reflexive, or relayed) for a specified .

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description

Field Summary

Fields
Modifier and Type	Field	Description

Constructor Summary

Constructors
Constructor	Description

Enum Constant Summary

Enum Constants
Enum Constant	Description

Method Summary

Modifier and Type	Method	Description
`abstract Collection<LocalCandidate>`	`harvest(Component component)`	Gathers all candidate addresses of the type that this CandidateHarvester supports.
`abstract HarvestStatistics`	`getHarvestStatistics()`	Returns the statistics describing how well the various harvests of this harvester went.
`abstract boolean`	`isHostHarvester()`	Returns true if this CandidateHarvester is to be considered a harvester for host candidates.

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

- Constructor Detail
- Method Detail
  - harvest
```
 abstract Collection<LocalCandidate> harvest(Component component)
```
    Gathers all candidate addresses of the type that this CandidateHarvester supports. The gathered candidate addresses are to be added by this CandidateHarvester to the specified Component using addLocalCandidate as soon as they are discovered.
    
    Parameters:
    
    component - the Component that we'd like to gather candidate addresses for.
  - getHarvestStatistics
```
 abstract HarvestStatistics getHarvestStatistics()
```
    Returns the statistics describing how well the various harvests of this harvester went.
  - isHostHarvester
```
 abstract boolean isHostHarvester()
```
    Returns true if this CandidateHarvester is to be considered a harvester for host candidates. Such a harvester should 1. Create local candidates of type HOST_CANDIDATE. 2. Not depend on other local candidates, already harvested for the component for which it is called. 3. Not perform blocking operations while harvesting.