/*
* JBoss, Home of Professional Open Source.
* See the COPYRIGHT.txt file distributed with this work for information
* regarding copyright ownership. Some portions may be licensed
* to Red Hat, Inc. under one or more contributor license agreements.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301 USA.
*/
package org.teiid.query.function.aggregate;
import java.util.List;
import org.teiid.UserDefinedAggregate;
/**
* Internal extension of the user defined aggregate interface so that we can expose the internal
* state. TODO: this should be exposed eventually for implementors
* @param <T>
*/
public interface ExposedStateUserDefinedAggregate<T> extends UserDefinedAggregate<T> {
List<? extends Class<?>> getStateTypes();
void getState(List<Object> state);
int setState(List<?> state, int index);
}