Package com.querydsl.sql

Class UnionImpl<T,Q extends ProjectableSQLQuery<T,Q> & Query<Q>>

java.lang.Object

com.querydsl.sql.UnionImpl<T,Q>

Type Parameters:

T - result type

Q - concrete query type

All Implemented Interfaces:

Fetchable<T>, Expression<T>, SubQueryExpression<T>, Union<T>, Serializable

public class UnionImpl<T,Q extends ProjectableSQLQuery<T,Q> & Query<Q>>
extends Object
implements Union<T>

Default implementation of the Union interface

Author:

tiwe

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
UnionImpl(Q query)

Method Summary

Modifier and Type	Method	Description
<R, C> R	accept(Visitor<R,C> v, C context)
Expression<T>	as(Path<T> alias)	Create an alias for the expression
Expression<T>	as(String alias)	Create an alias for the expression
List<T>	fetch()
long	fetchCount()
T	fetchFirst()
T	fetchOne()
QueryResults<T>	fetchResults()
QueryMetadata	getMetadata()
Class<? extends T>	getType()
Union<T>	groupBy(Expression<?>... o)	Defines the grouping/aggregation expressions
Union<T>	having(Predicate... o)	Defines the filters for aggregation
com.mysema.commons.lang.CloseableIterator<T>	iterate()	Get the projection as a typed Iterator
List<T>	list()	Get the projection as a typed List
Union<T>	orderBy(OrderSpecifier<?>... o)	Define the ordering of the query results
Stream<T>	stream()
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Details

UnionImpl

public UnionImpl(Q query)

Method Details

list

public List<T> list()

Description copied from interface: Union

Get the projection as a typed List

Specified by:

list in interface Union<T>

fetch

public List<T> fetch()

Specified by:

fetch in interface Fetchable<T>

fetchFirst

public T fetchFirst()

Specified by:

fetchFirst in interface Fetchable<T>

fetchOne

public T fetchOne()
           throws NonUniqueResultException

Specified by:

fetchOne in interface Fetchable<T>

Throws:

NonUniqueResultException

iterate

public com.mysema.commons.lang.CloseableIterator<T> iterate()

Description copied from interface: Union

Get the projection as a typed Iterator

Specified by:

iterate in interface Fetchable<T>

Specified by:

iterate in interface Union<T>

Returns:

result iterator

stream

public Stream<T> stream()

Specified by:

stream in interface Fetchable<T>

fetchResults

public QueryResults<T> fetchResults()

Specified by:

fetchResults in interface Fetchable<T>

fetchCount

public long fetchCount()

Specified by:

fetchCount in interface Fetchable<T>

groupBy

public Union<T> groupBy(Expression<?>... o)

Description copied from interface: Union

Defines the grouping/aggregation expressions

Specified by:

groupBy in interface Union<T>

Parameters:

o - group by

Returns:

the current object

having

public Union<T> having(Predicate... o)

Description copied from interface: Union

Defines the filters for aggregation

Specified by:

having in interface Union<T>

Parameters:

o - having conditions

Returns:

the current object

orderBy

public Union<T> orderBy(OrderSpecifier<?>... o)

Description copied from interface: Union

Define the ordering of the query results

Specified by:

orderBy in interface Union<T>

Parameters:

o - order

Returns:

the current object

as

public Expression<T> as(String alias)

Description copied from interface: Union

Create an alias for the expression

Specified by:

as in interface Union<T>

Parameters:

alias - alias

Returns:

this as alias

as

public Expression<T> as(Path<T> alias)

Description copied from interface: Union

Create an alias for the expression

Specified by:

as in interface Union<T>

Parameters:

alias - alias

Returns:

this as alias

toString

public String toString()

Overrides:

toString in class Object

accept

@Nullable
public <R,
C> R accept(Visitor<R,C> v,
 @Nullable
 C context)

Specified by:

accept in interface Expression<T>

getType

public Class<? extends T> getType()

Specified by:

getType in interface Expression<T>

getMetadata

public QueryMetadata getMetadata()

Specified by:

getMetadata in interface SubQueryExpression<T>