oracle.webcenter.portal.persistence.query

Class Subquery<T extends PortalEntity>

java.lang.Object

oracle.webcenter.portal.persistence.query.AbstractQuerySupport<T>

oracle.webcenter.portal.persistence.query.Subquery<T>

Type Parameters:

T - the return type of the subquery

All Implemented Interfaces:

AbstractQuery<T>

public class Subquery<T extends PortalEntity>
extends AbstractQuerySupport<T>

Can be used to perform sub-queries within a query.

Constructor Summary

Constructors

Constructor and Description
Subquery(java.lang.Class<T> returnType)

Method Summary

Modifier and Type	Method and Description
Subquery<T>	from(java.lang.Class<? extends T>... types) Sets the list of types of objects to find.
java.lang.String	toString()
Subquery<T>	where(Expression restriction) Modify the query to restrict the query result according to the specified expression.

Methods inherited from class oracle.webcenter.portal.persistence.query.AbstractQuerySupport

getFrom, getReturnType, getWhere, setFrom, setWhere, toExpression

Methods inherited from class java.lang.Object

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

Constructor Detail

Subquery

public Subquery(java.lang.Class<T> returnType)

Parameters:

returnType - the return type of the subquery

Method Detail

from

public Subquery<T> from(java.lang.Class<? extends T>... types)

Sets the list of types of objects to find. Only entities in the portal that have a specific type matching one of the types in the supplied list will be queried i.e. sub-types of the specified types will not be incldued.

Parameters:

types - a list of types of objects to find

Returns:

the modified subquery

where

public Subquery<T> where(Expression restriction)

Modify the query to restrict the query result according to the specified expression. Replaces the previously added restriction(s), if any.

Parameters:

restriction - the expression used to restrict the query result

Returns:

the modified subquery

toString

public java.lang.String toString()

Overrides:

toString in class AbstractQuerySupport<T extends PortalEntity>