com.mysema.query
Interface Detachable

All Known Implementing Classes:

DetachableAdapter, DetachableMixin, DetachableQuery, HQLSubQuery, JDOQLSubQuery, SQLSubQuery

public interface Detachable

Detachable defines methods for the construction of SubQuery instances

Author:

tiwe

Method Summary

ObjectSubQuery<Long>	count() Return the count of matched rows as a sub query
EBoolean	exists() Create an exists(this) expression
ListSubQuery<Object[]>	list(Expr<?>[] args)
ListSubQuery<Object[]>	list(Expr<?> first, Expr<?> second, Expr<?>... rest) Create a projection expression for the given projection
<RT> ListSubQuery<RT>	list(Expr<RT> projection) Create a projection expression for the given projection
EBoolean	notExists() Create an not exists(this) expression
ObjectSubQuery<Object[]>	unique(Expr<?>[] args) Create a projection expression for the given projection
ObjectSubQuery<Object[]>	unique(Expr<?> first, Expr<?> second, Expr<?>... rest) Create a projection expression for the given projection
<RT> ObjectSubQuery<RT>	unique(Expr<RT> projection) Create a projection expression for the given projection

Method Detail

count

ObjectSubQuery<Long> count()

Return the count of matched rows as a sub query

Returns:

exists

EBoolean exists()

Create an exists(this) expression

Returns:

list

ListSubQuery<Object[]> list(Expr<?> first,
                            Expr<?> second,
                            Expr<?>... rest)

Create a projection expression for the given projection

Parameters:

first -

second -

rest - rest

Returns:

a List over the projection

list

ListSubQuery<Object[]> list(Expr<?>[] args)

Parameters:

args -

Returns:

list

<RT> ListSubQuery<RT> list(Expr<RT> projection)

Create a projection expression for the given projection

Type Parameters:

RT - generic type of the List

Parameters:

projection -

Returns:

a List over the projection

notExists

EBoolean notExists()

Create an not exists(this) expression

Returns:

unique

ObjectSubQuery<Object[]> unique(Expr<?> first,
                                Expr<?> second,
                                Expr<?>... rest)

Create a projection expression for the given projection

Parameters:

first -

second -

rest -

Returns:

unique

ObjectSubQuery<Object[]> unique(Expr<?>[] args)

Create a projection expression for the given projection

Parameters:

args -

Returns:

unique

<RT> ObjectSubQuery<RT> unique(Expr<RT> projection)

Create a projection expression for the given projection

Type Parameters:

RT - return type

Parameters:

projection -

Returns:

the result or null for an empty result