AnalyticsExpression (Solr 9.0.0 analytics API)

java.lang.Object
- org.apache.solr.analytics.AnalyticsExpression

```
public class AnalyticsExpression
extends Object
```
A wrapper for a top-level analytics expression. The expression must have a name and be single valued.

Constructor Summary

Constructors
Constructor Description

AnalyticsExpression(String name, AnalyticsValue expression)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`exists()`	NOTE: Must be called after `toObject()` is called, otherwise the value is not guaranteed to be correct.
`AnalyticsValue`	`getExpression()`
`String`	`getName()`
`Object`	`toObject()`	Get the current value of the expression.

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

- Constructor Detail
  - AnalyticsExpression
```
public AnalyticsExpression(String name,
                           AnalyticsValue expression)
```
- Method Detail
  - getName
```
public String getName()
```
  - getExpression
```
public AnalyticsValue getExpression()
```
  - toObject
```
public Object toObject()
```
    Get the current value of the expression. This method can, and will, be called multiple times to return different values. The value returned is based on the ReductionCollectionManager.ReductionDataCollection given to the ReductionCollectionManager.setData(org.apache.solr.analytics.function.ReductionCollectionManager.ReductionDataCollection) method.
    
    Returns:
    
    the current value of the expression
  - exists
```
public boolean exists()
```
    NOTE: Must be called after toObject() is called, otherwise the value is not guaranteed to be correct.
    
    Returns:
    
    whether the current value of the expression exists.