InstrumentSelector (opentelemetry-sdk-metrics 0.12.0 API)

java.lang.Object
- io.opentelemetry.sdk.metrics.view.InstrumentSelector

```
@Immutable
public abstract class InstrumentSelector
extends java.lang.Object
```
Provides means for selecting one ore more Instruments. Used for configuring aggregations for the specified instruments.
There are two options for selecting instruments: by instrument name and by instrument type.

Nested Class Summary

Nested Classes
Modifier and Type Class Description

static interface InstrumentSelector.Builder
Builder for InstrumentSelector instances.

Constructor Summary

Constructors
Constructor Description

InstrumentSelector()

Method Summary

All Methods Static Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`hasInstrumentNameRegex()`	Returns whether the instrument name regex been specified.
`boolean`	`hasInstrumentType()`	Returns whether the InstrumentType been specified.
`java.util.regex.Pattern`	`instrumentNamePattern()`	Returns the `Pattern` generated by the provided `instrumentNameRegex()`, or null if none was specified.
`abstract java.lang.String`	`instrumentNameRegex()`	Returns which instrument names should be selected.
`abstract InstrumentType`	`instrumentType()`	Returns `InstrumentType` that should be selected.
`static InstrumentSelector.Builder`	`newBuilder()`

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

- Constructor Detail
  - InstrumentSelector
```
public InstrumentSelector()
```
- Method Detail
  - newBuilder
```
public static InstrumentSelector.Builder newBuilder()
```
  - instrumentType
```
@Nullable
public abstract InstrumentType instrumentType()
```
    Returns InstrumentType that should be selected. If null, then this specifier will not be used.
  - instrumentNameRegex
```
@Nullable
public abstract java.lang.String instrumentNameRegex()
```
    Returns which instrument names should be selected. This is a regex. If null, then this specifier will not be used.
  - instrumentNamePattern
```
@Nullable
@Memoized
public java.util.regex.Pattern instrumentNamePattern()
```
    Returns the Pattern generated by the provided instrumentNameRegex(), or null if none was specified.
  - hasInstrumentType
```
public boolean hasInstrumentType()
```
    Returns whether the InstrumentType been specified.
  - hasInstrumentNameRegex
```
public boolean hasInstrumentNameRegex()
```
    Returns whether the instrument name regex been specified.