Barrier (OpenGamma Strata)

All Known Implementing Classes:

SimpleConstantContinuousBarrier
```
public interface Barrier
```
Definition of barrier event of option instruments.
The barrier type, knock type, barrier level and other relevant information are specified in this class.
The barrier level can be date dependent.
For forward starting barrier, the barrier level can be set to very high or low level in the initial period.
The barrier is continuously monitored.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`double`	`getBarrierLevel(LocalDate date)`	Obtains the barrier level for a given observation date.
`BarrierType`	`getBarrierType()`	Obtains the barrier type.
`KnockType`	`getKnockType()`	Obtains the knock type.
`Barrier`	`inverseKnockType()`	Obtains an instance with knock type inverted.

- Method Detail
  - getBarrierType
```
BarrierType getBarrierType()
```
    Obtains the barrier type.
    
    Returns:
    
    the barrier type
  - getKnockType
```
KnockType getKnockType()
```
    Obtains the knock type.
    
    Returns:
    
    the knock type
  - getBarrierLevel
```
double getBarrierLevel(LocalDate date)
```
    Obtains the barrier level for a given observation date.
    
    Parameters:
    
    date - the observation date
    
    Returns:
    
    the barrier level
  - inverseKnockType
```
Barrier inverseKnockType()
```
    Obtains an instance with knock type inverted.
    
    Returns:
    
    the instance