com.mysema.query.group

Class GroupByProjection<K,V>

java.lang.Object

com.mysema.query.group.GroupByMap<K,V>

com.mysema.query.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

Modifier and Type	Field and Description
protected Expression<?>[]	expressions
protected List<GroupExpression<?,?>>	groupExpressions
protected List<QPair<?,?>>	maps

Constructor Summary

Constructors

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

Method Summary

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

Methods inherited from class com.mysema.query.group.GroupByMap

transform

Methods inherited from class java.lang.Object

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

Field Detail

groupExpressions

protected final List<GroupExpression<?,?>> groupExpressions

maps

protected final List<QPair<?,?>> maps

expressions

protected final Expression<?>[] expressions

Constructor Detail

GroupByProjection

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

Method Detail

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 -

Returns:

withoutGroupExpressions

protected static FactoryExpression<Tuple> withoutGroupExpressions(FactoryExpression<Tuple> expr)