All Known Subinterfaces:

MetricExporter, MetricReader

All Known Implementing Classes:

OtlpGrpcMetricExporter, OtlpHttpMetricExporter, PeriodicMetricReader

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
```
@FunctionalInterface
public interface AggregationTemporalitySelector
```
A functional interface that selects AggregationTemporality based on InstrumentType.

Since:

1.14.0

Method Summary

All Methods Static Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`static AggregationTemporalitySelector`	`alwaysCumulative()`	A common implementation of `AggregationTemporalitySelector` which returns `AggregationTemporality.CUMULATIVE` for all instruments.
`static java.lang.String`	`asString(AggregationTemporalitySelector selector)`	Returns a string representation of this selector, for using in `Object.toString()` implementations.
`static AggregationTemporalitySelector`	`deltaPreferred()`	A common implementation of `AggregationTemporalitySelector` which indicates delta preference.
`AggregationTemporality`	`getAggregationTemporality(InstrumentType instrumentType)`	Return the aggregation temporality for the `InstrumentType`.
`static AggregationTemporalitySelector`	`lowMemory()`	A common implementation of `AggregationTemporalitySelector` which reduces memory.

- Method Detail
  - alwaysCumulative
```
static AggregationTemporalitySelector alwaysCumulative()
```
    A common implementation of AggregationTemporalitySelector which returns AggregationTemporality.CUMULATIVE for all instruments.
  - deltaPreferred
```
static AggregationTemporalitySelector deltaPreferred()
```
    A common implementation of AggregationTemporalitySelector which indicates delta preference.
    AggregationTemporality.DELTA is returned for InstrumentType.COUNTER, InstrumentType.OBSERVABLE_COUNTER, and InstrumentType.HISTOGRAM. AggregationTemporality.CUMULATIVE is returned for InstrumentType.UP_DOWN_COUNTER and InstrumentType.OBSERVABLE_UP_DOWN_COUNTER.
  - lowMemory
```
static AggregationTemporalitySelector lowMemory()
```
    A common implementation of AggregationTemporalitySelector which reduces memory.
    AggregationTemporality.DELTA is returned for InstrumentType.COUNTER and InstrumentType.HISTOGRAM. AggregationTemporality.CUMULATIVE is returned for InstrumentType.UP_DOWN_COUNTER, InstrumentType.OBSERVABLE_UP_DOWN_COUNTER, and InstrumentType.OBSERVABLE_COUNTER.
    
    Since:
    
    1.28.0
  - getAggregationTemporality
```
AggregationTemporality getAggregationTemporality(InstrumentType instrumentType)
```
    Return the aggregation temporality for the InstrumentType.
  - asString
```
static java.lang.String asString(AggregationTemporalitySelector selector)
```
    Returns a string representation of this selector, for using in Object.toString() implementations.
    
    Since:
    
    1.38.0

Interface AggregationTemporalitySelector

Method Summary

Method Detail

alwaysCumulative

deltaPreferred

lowMemory

getAggregationTemporality

asString