Package com.querydsl.core.group

Class GroupByProjection<K,V>

java.lang.Object

com.querydsl.core.group.AbstractGroupByTransformer<K,Map<K,V>>

com.querydsl.core.group.GroupByMap<K,V>

com.querydsl.core.group.GroupByProjection<K,V>

Type Parameters:

K -

V -

All Implemented Interfaces:

ResultTransformer<Map<K,V>>

public abstract class GroupByProjection<K,V>
extends GroupByMap<K,V>

GroupByProjection provides projection of the Group results via the transform template method

Author:

tiwe

Field Summary

Fields inherited from class com.querydsl.core.group.AbstractGroupByTransformer

expressions, groupExpressions, maps

Constructor Summary

Constructors

Constructor	Description
GroupByProjection(Expression<K> key, Expression<?>... expressions)

Method Summary

Modifier and Type	Method	Description
protected abstract V	transform(Group group)	Creates a result object from the given group
protected Map<K,V>	transform(Map<K,Group> groups)

Methods inherited from class com.querydsl.core.group.GroupByMap

transform

Methods inherited from class com.querydsl.core.group.AbstractGroupByTransformer

withoutGroupExpressions

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

GroupByProjection

public GroupByProjection(Expression<K> key,
 Expression<?>... expressions)

Method Details

transform

protected Map<K,V> transform(Map<K,Group> groups)

Overrides:

transform in class GroupByMap<K,V>

transform

protected abstract V transform(Group group)

Creates a result object from the given group

Parameters:

group - group instance to transform

Returns:

transformed group