java.lang.Object

com.northconcepts.datapipeline.group.GroupOperation<Object>

com.northconcepts.datapipeline.group.operation.GroupMinimum

public class GroupMinimum extends GroupOperation<Object>

A GroupOperation that returns the smallest value of the source field in each group; unless excludeNulls is set, a null value discards the minimum found so far.

Constructor Summary

Constructors

Constructor

Description

GroupMinimum(FieldPath sourceFieldName)

GroupMinimum(FieldPath sourceFieldName, FieldPath targetFieldName)

GroupMinimum(FieldPath sourceFieldName, FieldPath targetFieldName, boolean excludeNulls)

GroupMinimum(String sourceFieldName)

GroupMinimum(String sourceFieldName, String targetFieldName)

GroupMinimum(String sourceFieldName, String targetFieldName, boolean excludeNulls)
Method Summary

Modifier and Type

Method

Description

protected GroupOperationField<Object>

createField()

Creates the accumulator that computes this operation's result for one group; called once per group in each window.

Methods inherited from class com.northconcepts.datapipeline.group.GroupOperation
getExcludeNulls, getFilter, getSourceFieldName, getSourceFieldPath, getTargetFieldName, getTargetFieldPath, setExcludeNulls, setFilter, setTargetFieldName, toString

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

Constructor Details
- GroupMinimum
  
  public GroupMinimum(String sourceFieldName)
- GroupMinimum
  
  public GroupMinimum(FieldPath sourceFieldName)
- GroupMinimum
  
  public GroupMinimum(String sourceFieldName, String targetFieldName)
- GroupMinimum
  
  public GroupMinimum(FieldPath sourceFieldName, FieldPath targetFieldName)
- GroupMinimum
  
  public GroupMinimum(String sourceFieldName, String targetFieldName, boolean excludeNulls)
- GroupMinimum
  
  public GroupMinimum(FieldPath sourceFieldName, FieldPath targetFieldName, boolean excludeNulls)
Method Details
- createField
  
  protected GroupOperationField<Object> createField()
  
  Description copied from class: GroupOperation
  
  Creates the accumulator that computes this operation's result for one group; called once per group in each window.
  
  Specified by:
  
  createField in class GroupOperation<Object>

Class GroupMinimum

Constructor Summary

Method Summary

Methods inherited from class com.northconcepts.datapipeline.group.GroupOperation

Methods inherited from class java.lang.Object

Constructor Details

GroupMinimum

GroupMinimum

GroupMinimum

GroupMinimum

GroupMinimum

GroupMinimum

Method Details

createField