PiMatchKey (ONOS Java API (2.5.1))

java.lang.Object
- org.onosproject.net.pi.runtime.PiMatchKey

```
@Beta
public final class PiMatchKey
extends Object
```
Representation of all field matches of an entry of a match+action table of a protocol-independent pipeline.

Nested Class Summary

Nested Classes
Modifier and Type Class Description

static class PiMatchKey.Builder
Builder of match keys.

Field Summary

Fields
Modifier and Type Field Description

static PiMatchKey EMPTY

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`static PiMatchKey.Builder`	`builder()`	Returns a new builder of match keys.
`boolean`	`equals(Object o)`
`Optional<PiFieldMatch>`	`fieldMatch(PiMatchFieldId fieldId)`	If present, returns the field match associated with the given header field identifier.
`Collection<PiFieldMatch>`	`fieldMatches()`	Returns the collection of field matches of this match key.
`int`	`hashCode()`
`String`	`toString()`

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

- Field Detail
  - EMPTY
```
public static final PiMatchKey EMPTY
```
- Method Detail
  - fieldMatches
```
public Collection<PiFieldMatch> fieldMatches()
```
    Returns the collection of field matches of this match key.
    
    Returns:
    
    collection of field matches
  - fieldMatch
```
public Optional<PiFieldMatch> fieldMatch(PiMatchFieldId fieldId)
```
    If present, returns the field match associated with the given header field identifier.
    
    Parameters:
    
    fieldId - field identifier
    
    Returns:
    
    optional field match
  - equals
```
public boolean equals(Object o)
```
    Overrides:
    
    equals in class Object
  - hashCode
```
public int hashCode()
```
    Overrides:
    
    hashCode in class Object
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object
  - builder
```
public static PiMatchKey.Builder builder()
```
    Returns a new builder of match keys.
    
    Returns:
    
    match key builder