FilteringObjective (ONOS Java API (2.2.4))

All Superinterfaces:

Objective

All Known Implementing Classes:

DefaultFilteringObjective
```
@Beta
public interface FilteringObjective
extends Objective
```
Represents a filtering flow objective. Each filtering flow objective is made up of a key (typically a PortCriterion) mapped to a set of criteria. Using this information, a pipeline aware driver will decide how this objective should be mapped to the device specific pipeline-tables in order to satisfy the filtering condition. For example, consider the following PERMIT filtering objective:
portX -> {MAC1, VLAN1}
The driver could decide to pass packets to the MAC table or VLAN or PORT tables to ensure that only those packets arriving with the correct dst MAC and VLAN ids from Port X are allowed into the pipeline.
Filtering objectives of type PERMIT allow packets that match the key:criteria to enter the pipeline. As a result, the implication is that packets that don't match are automatically denied (dropped).
Filtering objectives of type DENY, are used to deny packets that would otherwise be permitted and forwarded through the pipeline (ie. those packets that make it through the PERMIT filters).

Nested Class Summary

Nested Classes
Modifier and Type Interface Description

static interface FilteringObjective.Builder
Builder of Filtering objective entities.

static class FilteringObjective.Type
- Nested classes/interfaces inherited from interface org.onosproject.net.flowobjective.Objective
  Objective.Operation

Field Summary
- Fields inherited from interface org.onosproject.net.flowobjective.Objective
  DEFAULT_PERMANENT, DEFAULT_PRIORITY, DEFAULT_TIMEOUT, MAX_PRIORITY, MIN_PRIORITY

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`java.util.Collection<Criterion>`	`conditions()`	The set of conditions the filter must provision at the device.
`FilteringObjective.Builder`	`copy()`	Returns a new builder set to create a copy of this objective.
`Criterion`	`key()`	Obtain the key for this filter.
`TrafficTreatment`	`meta()`	Auxiliary optional information provided to the device driver.
`FilteringObjective.Type`	`type()`	Obtain this filtering type.

Methods inherited from interface org.onosproject.net.flowobjective.Objective
appId, context, id, op, permanent, priority, timeout

- Method Detail
  - key
```
Criterion key()
```
    Obtain the key for this filter. The filter may or may not require a key.
    
    Returns:
    
    a criterion, which could be null if no key was provided.
  - type
```
FilteringObjective.Type type()
```
    Obtain this filtering type.
    
    Returns:
    
    the type
  - conditions
```
java.util.Collection<Criterion> conditions()
```
    The set of conditions the filter must provision at the device.
    
    Returns:
    
    a collection of criteria
  - meta
```
TrafficTreatment meta()
```
    Auxiliary optional information provided to the device driver. Typically conveys information about changes (treatments) to packets that are permitted into the pipeline by the PERMIT filtering condition.
    
    Returns:
    
    a treatment on the packets that make it through the PERMIT filters. Value may be null if no meta information is provided.
  - copy
```
FilteringObjective.Builder copy()
```
    Returns a new builder set to create a copy of this objective.
    
    Specified by:
    
    copy in interface Objective
    
    Returns:
    
    new builder