/**
* This Source Code Form is subject to the terms of the Mozilla Public License,
* v. 2.0. If a copy of the MPL was not distributed with this file, You can
* obtain one at http://mozilla.org/MPL/2.0/. OpenMRS is also distributed under
* the terms of the Healthcare Disclaimer located at http://openmrs.org/license.
*
* Copyright (C) OpenMRS Inc. OpenMRS is a registered trademark and the OpenMRS
* graphic logo is a trademark of OpenMRS Inc.
*/
package org.openmrs.api.db.hibernate.search;
import java.util.List;
import org.apache.commons.lang.Validate;
import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.openmrs.collection.ListPart;
/**
* Wraps around a query to provide common result methods.
*
* @since 1.11
*/
public abstract class SearchQuery<T> {
private final Class<T> type;
private final Session session;
public SearchQuery(Session session, Class<T> type) {
Validate.notNull(session);
Validate.notNull(type);
this.session = session;
this.type = type;
}
/**
* @return the type
*/
protected Class<T> getType() {
return type;
}
protected Session getSession() {
return session;
}
/**
* Runs the query returning a unique result.
*
* @return the unique result or null
* @throws HibernateException if more than one result
*/
public abstract T uniqueResult() throws HibernateException;
/**
* Runs the query returning a list with all results.
*
* @return the list
*/
public abstract List<T> list();
/**
* Runs the query returning a partial results list.
*
* @param firstResult position of the first result to return, optional
* @param maxResults maximum number of results, optional
* @return the partial list
*/
public abstract ListPart<T> listPart(Long firstResult, Long maxResults);
public abstract long resultSize();
public ListPart<T> listPart(Integer firstResult, Integer maxResults) {
Long first = (firstResult != null) ? Long.valueOf(firstResult) : null;
Long max = (maxResults != null) ? Long.valueOf(maxResults) : null;
return listPart(first, max);
}
}