Package net.pricefx.formulaengine.scripting.queryapi

Interface Selectable

All Known Subinterfaces:

SelectableExpression

public interface Selectable

An object which can be part of the output or input of a PipelineStage.

The alias of a Selectable is used to refer to it for both pipeline stage construction and query data fetching.

For example:

 def qapi = api.queryApi()
 def p = qapi.tables().products()
 return qapi.source(
      p,
      [
          p.sku(),                                       // selectable with default alias "sku"
          qapi.exprs().string("spamEgg").as("breakfast") // selectable with alias "breakfast"
      ]
 ).filter { input -> input.sku.like("%foo") } // refers to the previous stage selectable have the "sku" alias
 .stream { it.each { row -> print(row.breakfast) } } // refers to the "spamEgg" literal string defined in the source stage
                                                     // and propagated through the filter stage (which does not alter its inputs columns)
 

Since:

14.0 - Caribou Lou

Method Summary

Modifier and Type	Method	Description
String	alias()

Method Details

alias

String alias()

Returns:

the sting identifier of this selectable object

Since:

14.0 - Caribou Lou