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Add scrollWithSubclasses() method.

This commit is contained in:
Ben Alex 2005-04-20 12:06:23 +00:00
parent 958a45af69
commit cea4bf11d1
2 changed files with 41 additions and 6 deletions
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27
domain/src/main/java/org/acegisecurity/domain/dao/Dao.java
View File

@ -94,7 +94,7 @@ public interface Dao {
public void delete(PersistableEntity value);
/**
* Return all persistent instances.
* Return all persistent instances, including subclasses.
*
* @return all persistence instances (an empty <code>List</code> will be
* returned if no matches are found)
@ -133,7 +133,8 @@ public interface Dao {
* the query by example evaluation.
* </p>
*
* @param value parameters to filter on
* @param value parameters to filter on (the class of this object will be
* added to the filter)
* @param firstElement the first result (start at zero to obtain all
* results)
* @param maxElements the maximum number of results desired for this page
@ -148,6 +149,28 @@ public interface Dao {
public PaginatedList scroll(PersistableEntity value, int firstElement,
int maxElements, String orderByAsc);
/**
* Find persistent instances with properties matching those of the passed
* <code>PersistableEntity</code>, ignoring the class of the passed
* <code>PersistableEntity</code> (useful if you pass a superclass, as you
* want to find all subclass instances which match).
*
* @param value parameters to filter on (the class of this object will NOT
* be added to the filter)
* @param firstElement the first result (start at zero to obtain all
* results)
* @param maxElements the maximum number of results desired for this page
* of the result set
* @param orderByAsc the property name of the
* <code>PersistableEntity</code> that should be used to order the
* results
*
* @return the requested page of the result list (a properly formed
* <code>PaginatedList</code> is returned if no results match)
*/
public PaginatedList scrollWithSubclasses(PersistableEntity value,
int firstElement, int maxElements, String orderByAsc);
/**
* Indicates whether the DAO instance provides persistence services for the
* specified class.

20
domain/src/main/java/org/acegisecurity/domain/hibernate/DaoHibernate.java
View File

@ -109,12 +109,24 @@ public class DaoHibernate extends HibernateDaoSupport implements Dao,
Assert.notNull(value);
Assert.hasText(orderByAsc,
"An orderByAsc is required (why not use your identity property?)");
Assert.isInstanceOf(this.supportsClass, value, "Can only scroll with values this DAO supports");
return (PaginatedList) getHibernateTemplate().execute(getFindByValueCallback(
value, firstElement, maxElements, Order.asc(orderByAsc)));
value.getClass(), value, firstElement, maxElements, Order.asc(orderByAsc)));
}
public boolean supports(Class clazz) {
public PaginatedList scrollWithSubclasses(PersistableEntity value, int firstElement,
int maxElements, String orderByAsc) {
Assert.notNull(value);
Assert.hasText(orderByAsc,
"An orderByAsc is required (why not use your identity property?)");
Assert.isInstanceOf(this.supportsClass, value, "Can only scroll with values this DAO supports");
return (PaginatedList) getHibernateTemplate().execute(getFindByValueCallback(
this.supportsClass, value, firstElement, maxElements, Order.asc(orderByAsc)));
}
public boolean supports(Class clazz) {
Assert.notNull(clazz);
return this.supportsClass.equals(clazz);
@ -187,12 +199,12 @@ public class DaoHibernate extends HibernateDaoSupport implements Dao,
*
* @return a PaginatedList containing the requested objects
*/
private HibernateCallback getFindByValueCallback(final Object bean,
private HibernateCallback getFindByValueCallback(final Class whichClass, final Object bean,
final int firstElement, final int count, final Order order) {
return new HibernateCallback() {
public Object doInHibernate(Session session)
throws HibernateException {
Criteria criteria = session.createCriteria(bean.getClass());
Criteria criteria = session.createCriteria(whichClass);
criteria.addOrder(order);