ExpressionFunctionValues

java.lang.Object
- org.apache.lucene.search.DoubleValues
- - org.apache.lucene.expressions.ExpressionFunctionValues

class ExpressionFunctionValues
extends DoubleValues

A DoubleValues which evaluates an expression

Field Summary

Fields
Modifier and Type	Field	Description
`(package private) boolean`	`computed`
`(package private) int`	`currentDoc`
`(package private) double`	`currentValue`
`(package private) Expression`	`expression`
`(package private) DoubleValues[]`	`functionValues`

Fields inherited from class org.apache.lucene.search.DoubleValues
EMPTY

Constructor Summary

Constructors
Constructor Description

ExpressionFunctionValues(Expression expression, DoubleValues[] functionValues)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`advanceExact(int doc)`	Advance this instance to the given document id
`double`	`doubleValue()`	Get the double value for the current document

Methods inherited from class org.apache.lucene.search.DoubleValues
withDefault

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

- Field Detail
  - expression
```
final Expression expression
```
  - functionValues
```
final DoubleValues[] functionValues
```
  - currentValue
```
double currentValue
```
  - currentDoc
```
int currentDoc
```
  - computed
```
boolean computed
```
- Constructor Detail
  - ExpressionFunctionValues
```
ExpressionFunctionValues(Expression expression,
                         DoubleValues[] functionValues)
```
- Method Detail
  - advanceExact
```
public boolean advanceExact(int doc)
                     throws java.io.IOException
```
    Description copied from class: DoubleValues
    
    Advance this instance to the given document id
    
    Specified by:
    
    advanceExact in class DoubleValues
    
    Returns:
    
    true if there is a value for this document
    
    Throws:
    
    java.io.IOException
  - doubleValue
```
public double doubleValue()
```
    Description copied from class: DoubleValues
    
    Get the double value for the current document
    
    Specified by:
    
    doubleValue in class DoubleValues