com.querydsl.core.group

Class GroupByBuilder<K>

java.lang.Object

com.querydsl.core.group.GroupByBuilder<K>

Type Parameters:

K -

public class GroupByBuilder<K>
extends Object

GroupByBuilder is a fluent builder for GroupBy transformer instances. This class is not to be used directly, but via GroupBy.

Author:

tiwe

Constructor Summary

Constructors

Constructor and Description
GroupByBuilder(Expression<K> key) Create a new GroupByBuilder for the given key expression

Method Summary

Methods

Modifier and Type	Method and Description
ResultTransformer<Map<K,Group>>	as(Expression<?>... expressions) Get the results as a map
<V> ResultTransformer<Map<K,V>>	as(Expression<V> expression) Get the results as a map
<V> ResultTransformer<Map<K,V>>	as(FactoryExpression<V> expression) Get the results as a map
ResultTransformer<com.mysema.commons.lang.CloseableIterator<Group>>	iterate(Expression<?>... expressions) Get the results as a closeable iterator
<V> ResultTransformer<com.mysema.commons.lang.CloseableIterator<V>>	iterate(Expression<V> expression) Get the results as a closeable iterator
<V> ResultTransformer<com.mysema.commons.lang.CloseableIterator<V>>	iterate(FactoryExpression<V> expression) Get the results as a closeable iterator
ResultTransformer<List<Group>>	list(Expression<?>... expressions) Get the results as a list
<V> ResultTransformer<List<V>>	list(Expression<V> expression) Get the results as a list
<V> ResultTransformer<List<V>>	list(FactoryExpression<V> expression) Get the results as a list

Methods inherited from class java.lang.Object

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

Constructor Detail

GroupByBuilder

public GroupByBuilder(Expression<K> key)

Create a new GroupByBuilder for the given key expression

Parameters:

key - key for aggregating

Method Detail

as

public ResultTransformer<Map<K,Group>> as(Expression<?>... expressions)

Get the results as a map

Parameters:

expressions - projection

Returns:

new result transformer

iterate

public ResultTransformer<com.mysema.commons.lang.CloseableIterator<Group>> iterate(Expression<?>... expressions)

Get the results as a closeable iterator

Parameters:

expressions - projection

Returns:

new result transformer

list

public ResultTransformer<List<Group>> list(Expression<?>... expressions)

Get the results as a list

Parameters:

expressions - projection

Returns:

new result transformer

as

public <V> ResultTransformer<Map<K,V>> as(Expression<V> expression)

Get the results as a map

Parameters:

expression - projection

Returns:

new result transformer

iterate

public <V> ResultTransformer<com.mysema.commons.lang.CloseableIterator<V>> iterate(Expression<V> expression)

Get the results as a closeable iterator

Parameters:

expression - projection

Returns:

new result transformer

list

public <V> ResultTransformer<List<V>> list(Expression<V> expression)

Get the results as a list

Parameters:

expression - projection

Returns:

new result transformer

as

public <V> ResultTransformer<Map<K,V>> as(FactoryExpression<V> expression)

Get the results as a map

Parameters:

expression - projection

Returns:

new result transformer

iterate

public <V> ResultTransformer<com.mysema.commons.lang.CloseableIterator<V>> iterate(FactoryExpression<V> expression)

Get the results as a closeable iterator

Parameters:

expression - projection

Returns:

new result transformer

list

public <V> ResultTransformer<List<V>> list(FactoryExpression<V> expression)

Get the results as a list

Parameters:

expression - projection

Returns:

new result transformer