org.ibatis.persist.criteria

Interface Selection<X>

Type Parameters:

X - the type of the selection item

All Known Subinterfaces:

CompoundSelection<X>, CriteriaBuilder.Case<R>, CriteriaBuilder.Coalesce<T>, CriteriaBuilder.In<T>, CriteriaBuilder.SimpleCase<C,R>, Expression<T>, ParameterExpression<T>, Path<X>, Predicate, Subquery<T>

public interface Selection<X>

The Selection interface defines an item that is to be returned in a query result.

Since:

iBatis Persistence 1.0

Method Summary

Modifier and Type	Method and Description
Selection<X>	alias(String name) Assigns an alias to the selection item.
String	getAlias() Return the alias assigned to the tuple element or null, if no alias has been assigned.
List<Selection<?>>	getCompoundSelectionItems() Return the selection items composing a compound selection.
Class<? extends X>	getJavaType() Return the Java type of the tuple element.
boolean	isCompoundSelection() Whether the selection item is a compound selection.

Method Detail

alias

Selection<X> alias(String name)

Assigns an alias to the selection item. Once assigned, an alias cannot be changed or reassigned. Returns the same selection item.

Parameters:

name - alias

Returns:

selection item

isCompoundSelection

boolean isCompoundSelection()

Whether the selection item is a compound selection.

Returns:

boolean indicating whether the selection is a compound selection

getCompoundSelectionItems

List<Selection<?>> getCompoundSelectionItems()

Return the selection items composing a compound selection. Modifications to the list do not affect the query.

Returns:

list of selection items

Throws:

IllegalStateException - if selection is not a compound selection

getJavaType

Class<? extends X> getJavaType()

Return the Java type of the tuple element.

Returns:

the Java type of the tuple element

getAlias

String getAlias()

Return the alias assigned to the tuple element or null, if no alias has been assigned.

Returns:

alias