InterpolatedLookup (container-search 7.543.30 API)

java.lang.Object
- com.yahoo.search.grouping.request.GroupingNode
- - com.yahoo.search.grouping.request.GroupingExpression
  - - com.yahoo.search.grouping.request.DocumentValue
    - - com.yahoo.search.grouping.request.InterpolatedLookup

```
public class InterpolatedLookup
extends DocumentValue
```
This class represents a lookup in a multivalue document attribute in a GroupingExpression. It takes the attribute (assumed to contain a sorted array) from the input Hit and finds the index that the second (lookup) argument expression would have, with linear interpolation when the lookup argument is between two array element values.

Author:

arnej27959

Constructor Summary

Constructors
Constructor Description

InterpolatedLookup(String attributeName, GroupingExpression lookupArgument)
Constructs a new instance of this class.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`InterpolatedLookup`	`copy()`	Returns a deep copy of this
`String`	`getAttributeName()`	Returns the name of the attribute to retrieve from the input hit
`GroupingExpression`	`getLookupArgument()`	Return the expression to evaluate before lookup

Methods inherited from class com.yahoo.search.grouping.request.DocumentValue
resolveLevel

Methods inherited from class com.yahoo.search.grouping.request.GroupingExpression
asImage, asString, getLevel, getLevelOrNull, setLabel, visit

Methods inherited from class com.yahoo.search.grouping.request.GroupingNode
getImage, getLabel, toString

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

- Constructor Detail
  - InterpolatedLookup
```
public InterpolatedLookup(String attributeName,
                          GroupingExpression lookupArgument)
```
    Constructs a new instance of this class.
    
    Parameters:
    
    attributeName - the attribute name to assign to this.
    
    lookupArgument - Expression giving a floating-point value for the lookup argument
- Method Detail
  - copy
```
public InterpolatedLookup copy()
```
    Description copied from class: GroupingExpression
    
    Returns a deep copy of this
    
    Specified by:
    
    copy in class GroupingExpression
  - getAttributeName
```
public String getAttributeName()
```
    Returns the name of the attribute to retrieve from the input hit
  - getLookupArgument
```
public GroupingExpression getLookupArgument()
```
    Return the expression to evaluate before lookup