javax.persistence

Interface Tuple

public interface Tuple

Interface for extracting the elements of a query result tuple.

Method Summary

Methods

Modifier and Type	Method and Description
Object	get(int i) Get the value of the element at the specified position in the result tuple.
<X> X	get(int i, Class<X> type) Get the value of the element at the specified position in the result tuple.
Object	get(String alias) Get the value of the tuple element to which the specified alias has been assigned.
<X> X	get(String alias, Class<X> type) Get the value of the tuple element to which the specified alias has been assigned.
<X> X	get(TupleElement<X> tupleElement) Get the value of the specified tuple element.
List<TupleElement<?>>	getElements() Return the tuple elements.
Object[]	toArray() Return the values of the result tuple elements as an array.

Method Detail

get

Object get(int i)

Get the value of the element at the specified position in the result tuple. The first position is 0.

Parameters:

i - position in result tuple

Returns:

value of the tuple element

Throws:

IllegalArgumentException - if i exceeds length of result tuple

get

<X> X get(int i,
        Class<X> type)

Get the value of the element at the specified position in the result tuple. The first position is 0.

Type Parameters:

X - the type of the tuple element

Parameters:

i - position in result tuple

type - type of the tuple element

Returns:

value of the tuple element

Throws:

IllegalArgumentException - if i exceeds length of result tuple or element cannot be assigned to the specified type

get

Object get(String alias)

Get the value of the tuple element to which the specified alias has been assigned.

Parameters:

alias - alias assigned to tuple element

Returns:

value of the tuple element

Throws:

IllegalArgumentException - if alias does not correspond to an element in the query result tuple

get

<X> X get(String alias,
        Class<X> type)

Get the value of the tuple element to which the specified alias has been assigned.

Type Parameters:

X - the type of the tuple element

Parameters:

alias - alias assigned to tuple element

type - of the tuple element

Returns:

value of the tuple element

Throws:

IllegalArgumentException - if alias does not correspond to an element in the query result tuple or element cannot be assigned to the specified type

get

<X> X get(TupleElement<X> tupleElement)

Get the value of the specified tuple element.

Type Parameters:

X - the type of the tuple element

Parameters:

tupleElement - tuple element

Returns:

value of tuple element

Throws:

IllegalArgumentException - if tuple element does not correspond to an element in the query result tuple

getElements

List<TupleElement<?>> getElements()

Return the tuple elements.

Returns:

tuple elements

toArray

Object[] toArray()

Return the values of the result tuple elements as an array.

Returns:

tuple element values