Java tutorial
/* * ome.services.query.IObjectClassQuery * * Copyright 2006 University of Dundee. All rights reserved. * Use is subject to license terms supplied in LICENSE.txt */ /*------------------------------------------------------------------------------ * * Written by: Josh Moore <josh.moore@gmx.de> * *------------------------------------------------------------------------------ */ package ome.services.query; import java.sql.SQLException; import org.hibernate.Criteria; import org.hibernate.HibernateException; import org.hibernate.Session; import org.hibernate.criterion.Restrictions; // Application-internal dependencies import ome.parameters.Parameters; import ome.parameters.QueryParameter; /** * simple query subclass which uses the {@link ome.parameters.Parameters#CLASS} * parameter value to create a {@link org.hibernate.Criteria} and then adds * {@link org.hibernate.criterion.Expression} instances based on all other * parameter names. * <p> * For example: * </p> * <code> * Parameters p = new Parameters().addClass( Image.class ) * .addString( "name", "LT-3059"); * </code> * <p> * produces a query of the form "select i from Image i where name = 'LT-3059'" * </p> * * @author Josh Moore, <a href="mailto:josh.moore@gmx.de">josh.moore@gmx.de</a> * @version 1.0 <small> (<b>Internal version:</b> $Rev$ $Date$) </small> * @since OMERO 3.0 */ public class IObjectClassQuery extends Query { static String CLASS = Parameters.CLASS; static Definitions defs = new Definitions(new QueryParameterDef(CLASS, Class.class, false)); public IObjectClassQuery(Parameters parameters) { super(defs, parameters); } @Override protected void buildQuery(Session session) throws HibernateException, SQLException { Criteria c = session.createCriteria((Class) value(CLASS)); for (QueryParameter qp : params.queryParameters()) { if (!qp.name.equals(CLASS)) { c.add(Restrictions.eq(qp.name, qp.value)); // TODO checks for // type. } } setCriteria(c); } }