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TupleElement.java
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TupleElement.java
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/**
* Copyright (C) 2016 Czech Technical University in Prague
*
* This program is free software: you can redistribute it and/or modify it under
* the terms of the GNU General Public License as published by the Free Software
* Foundation, either version 3 of the License, or (at your option) any
* later version.
*
* This program 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 General Public License for more
* details. You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package cz.cvut.kbss.jopa.model.query;
/**
* The TupleElement interface defines an element that is returned in a query
* result tuple.
*
* @param <X>
* the type of the element
*/
public interface TupleElement<X> {
/**
* Return the runtime Java type of the tuple element.
*
* @return the runtime Java type of the tuple element
*/
Class<? extends X> getJavaType();
/**
* Return the alias assigned to the tuple element or null, if no alias has
* been assigned.
*
* @return alias
*/
String getAlias();
}