org.hibernate.hql.internal.ast.tree.AggregatedSelectExpression Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of hibernate-core Show documentation
Show all versions of hibernate-core Show documentation
Hibernate's core ORM functionality
/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* License: GNU Lesser General Public License (LGPL), version 2.1 or later.
* See the lgpl.txt file in the root directory or .
*/
package org.hibernate.hql.internal.ast.tree;
import java.util.List;
import org.hibernate.transform.ResultTransformer;
/**
* Contract for a select expression which aggregates other select expressions together into a single return
*
* @author Steve Ebersole
*/
public interface AggregatedSelectExpression extends SelectExpression {
/**
* Retrieves a list of the selection {@link org.hibernate.type.Type types} being aggregated
*
* @return The list of types.
*/
public List getAggregatedSelectionTypeList();
/**
* Retrieve the aliases for the columns aggregated here.
*
* @return The column aliases.
*/
public String[] getAggregatedAliases();
/**
* Retrieve the {@link ResultTransformer} responsible for building aggregated select expression results into their
* aggregated form.
*
* @return The appropriate transformer
*/
public ResultTransformer getResultTransformer();
/**
* Obtain the java type of the aggregation
*
* @return The java type.
*/
public Class getAggregationResultType();
}