Java tutorial
/* * Copyright 2011, Mysema Ltd * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * http://www.apache.org/licenses/LICENSE-2.0 * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.mysema.query.jpa; import static org.junit.Assert.assertEquals; import java.util.Arrays; import java.util.List; import org.hibernate.Query; import org.hibernate.ScrollMode; import org.hibernate.ScrollableResults; import org.hibernate.Session; import org.junit.Test; import org.junit.runner.RunWith; import antlr.RecognitionException; import antlr.TokenStreamException; import com.mysema.query.jpa.domain.Cat; import com.mysema.query.jpa.domain.QCat; import com.mysema.query.jpa.hibernate.HibernateDeleteClause; import com.mysema.query.jpa.hibernate.HibernateQuery; import com.mysema.query.jpa.hibernate.HibernateUpdateClause; import com.mysema.query.jpa.hibernate.HibernateUtil; import com.mysema.query.types.EntityPath; import com.mysema.testutil.HibernateTestRunner; @RunWith(HibernateTestRunner.class) public class IntegrationBase extends ParsingTest { private Session session; @Override protected QueryHelper query() { return new QueryHelper(HQLTemplates.DEFAULT) { @Override public void parse() throws RecognitionException, TokenStreamException { try { System.out.println("query : " + toString().replace('\n', ' ')); Query query = session.createQuery(toString()); HibernateUtil.setConstants(query, getConstants(), getMetadata().getParams()); query.list(); } catch (Exception e) { e.printStackTrace(); throw new RuntimeException(e); } finally { System.out.println(); } } }; } @Override @Test public void GroupBy() throws Exception { // NOTE : commented out, because HQLSDB doesn't support these queries } @Override @Test public void GroupBy_2() throws Exception { // NOTE : commented out, because HQLSDB doesn't support these queries } @Override @Test public void OrderBy() throws Exception { // NOTE : commented out, because HQLSDB doesn't support these queries } @Override @Test public void DocoExamples910() throws Exception { // NOTE : commented out, because HQLSDB doesn't support these queries } private HibernateDeleteClause delete(EntityPath<?> entity) { return new HibernateDeleteClause(session, entity); } private HibernateUpdateClause update(EntityPath<?> entity) { return new HibernateUpdateClause(session, entity); } @Test public void Scroll() { session.save(new Cat("Bob", 10)); session.save(new Cat("Steve", 11)); HibernateQuery query = new HibernateQuery(session); ScrollableResults results = query.from(QCat.cat).scroll(ScrollMode.SCROLL_INSENSITIVE, QCat.cat); while (results.next()) { System.out.println(results.get(0)); } results.close(); } @Test public void Update() { session.save(new Cat("Bob", 10)); session.save(new Cat("Steve", 11)); QCat cat = QCat.cat; long amount = update(cat).where(cat.name.eq("Bob")).set(cat.name, "Bobby").set(cat.alive, false).execute(); assertEquals(1, amount); assertEquals(0l, query().from(cat).where(cat.name.eq("Bob")).count()); } @Test public void Update_with_null() { session.save(new Cat("Bob", 10)); session.save(new Cat("Steve", 11)); QCat cat = QCat.cat; long amount = update(cat).where(cat.name.eq("Bob")).set(cat.name, (String) null).set(cat.alive, false) .execute(); assertEquals(1, amount); } @Test public void Delete() { session.save(new Cat("Bob", 10)); session.save(new Cat("Steve", 11)); QCat cat = QCat.cat; long amount = delete(cat).where(cat.name.eq("Bob")).execute(); assertEquals(1, amount); } @Test public void Collection() throws Exception { List<Cat> cats = Arrays.asList(new Cat("Bob", 10), new Cat("Steve", 11)); for (Cat cat : cats) { session.save(cat); } query().from(cat).innerJoin(cat.kittens, kitten).where(kitten.in(cats)).parse(); } public void setSession(Session session) { this.session = session; } }