AggregateGroupFieldsAction.GroupByField (Data Pipeline JavaDoc)

java.lang.Object

com.northconcepts.datapipeline.foundations.pipeline.action.aggregate.AggregateGroupFieldsAction.GroupByField

Enclosing class:: AggregateGroupFieldsAction

public static class AggregateGroupFieldsAction.GroupByField extends Object

A source field and the operator applied to it: either a grouping key (GROUPBY) or an aggregate written to the target field.

Constructor Summary

Constructors

Constructor

Description

GroupByField(String sourceFieldName, String targetFieldName, AggregateGroupFieldsAction.OperatorType operatorType, boolean excludeNulls)

Creates a field whose target name defaults to the source name when blank.
Method Summary

Modifier and Type

Method

Description

void

generateSqlSelect(Select select)

Adds this field to the SQL select as a grouped column or an aggregate expression; FIRST and LAST throw UnsupportedOperationException.

String

toString()

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

Constructor Details
- GroupByField
  
  public GroupByField(String sourceFieldName, String targetFieldName, AggregateGroupFieldsAction.OperatorType operatorType, boolean excludeNulls)
  
  Creates a field whose target name defaults to the source name when blank.
Method Details
- generateSqlSelect
  
  public void generateSqlSelect(Select select)
  
  Adds this field to the SQL select as a grouped column or an aggregate expression; FIRST and LAST throw UnsupportedOperationException.
- toString
  
  public String toString()
  
  Overrides:
  
  toString in class Object