org.mycore.backend.jpa.MCRStreamQuery Maven / Gradle / Ivy
/*
* This file is part of *** M y C o R e ***
* See http://www.mycore.de/ for details.
*
* MyCoRe 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.
*
* MyCoRe 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 MyCoRe. If not, see .
*/
package org.mycore.backend.jpa;
import java.util.stream.Stream;
import javax.persistence.EntityManager;
import org.mycore.backend.hibernate.MCRHibernateQueryStream;
/**
* Provides a read-only Stream of results.
* @author Thomas Scheffler (yagee)
*
*/
public abstract class MCRStreamQuery {
public abstract Stream getResultStream();
public abstract MCRStreamQuery setParameter(String name, Object value);
public abstract MCRStreamQuery setFetchSize(int size);
public abstract MCRStreamQuery setMaxResults(int size);
public static MCRStreamQuery getInstance(EntityManager em, String jql, Class resultType) {
return new MCRHibernateQueryStream<>(em, jql, resultType);
}
}