下面列出了org.hibernate.dialect.DB2Dialect#org.hibernate.criterion.Example 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。
@Override
@SuppressWarnings({"unchecked", "deprecation"})
public <T> List<T> findByExample(
@Nullable final String entityName, final T exampleEntity, final int firstResult, final int maxResults)
throws DataAccessException {
Assert.notNull(exampleEntity, "Example entity must not be null");
return nonNull(executeWithNativeSession((HibernateCallback<List<T>>) session -> {
Criteria executableCriteria = (entityName != null ?
session.createCriteria(entityName) : session.createCriteria(exampleEntity.getClass()));
executableCriteria.add(Example.create(exampleEntity));
prepareCriteria(executableCriteria);
if (firstResult >= 0) {
executableCriteria.setFirstResult(firstResult);
}
if (maxResults > 0) {
executableCriteria.setMaxResults(maxResults);
}
return executableCriteria.list();
}));
}
@Override
@SuppressWarnings({"unchecked", "deprecation"})
public <T> List<T> findByExample(
@Nullable final String entityName, final T exampleEntity, final int firstResult, final int maxResults)
throws DataAccessException {
Assert.notNull(exampleEntity, "Example entity must not be null");
return nonNull(executeWithNativeSession((HibernateCallback<List<T>>) session -> {
Criteria executableCriteria = (entityName != null ?
session.createCriteria(entityName) : session.createCriteria(exampleEntity.getClass()));
executableCriteria.add(Example.create(exampleEntity));
prepareCriteria(executableCriteria);
if (firstResult >= 0) {
executableCriteria.setFirstResult(firstResult);
}
if (maxResults > 0) {
executableCriteria.setMaxResults(maxResults);
}
return executableCriteria.list();
}));
}
@Override
public <T> List<T> findByExample(
final String entityName, final T exampleEntity, final int firstResult, final int maxResults)
throws DataAccessException {
Assert.notNull(exampleEntity, "Example entity must not be null");
return executeWithNativeSession(new HibernateCallback<List<T>>() {
@Override
@SuppressWarnings("unchecked")
public List<T> doInHibernate(Session session) throws HibernateException {
Criteria executableCriteria = (entityName != null ?
session.createCriteria(entityName) : session.createCriteria(exampleEntity.getClass()));
executableCriteria.add(Example.create(exampleEntity));
prepareCriteria(executableCriteria);
if (firstResult >= 0) {
executableCriteria.setFirstResult(firstResult);
}
if (maxResults > 0) {
executableCriteria.setMaxResults(maxResults);
}
return executableCriteria.list();
}
});
}
@Override
@SuppressWarnings("deprecation")
public <T> List<T> findByExample(
final String entityName, final T exampleEntity, final int firstResult, final int maxResults)
throws DataAccessException {
Assert.notNull(exampleEntity, "Example entity must not be null");
return executeWithNativeSession(new HibernateCallback<List<T>>() {
@Override
@SuppressWarnings("unchecked")
public List<T> doInHibernate(Session session) throws HibernateException {
Criteria executableCriteria = (entityName != null ?
session.createCriteria(entityName) : session.createCriteria(exampleEntity.getClass()));
executableCriteria.add(Example.create(exampleEntity));
prepareCriteria(executableCriteria);
if (firstResult >= 0) {
executableCriteria.setFirstResult(firstResult);
}
if (maxResults > 0) {
executableCriteria.setMaxResults(maxResults);
}
return executableCriteria.list();
}
});
}
@Override
public <T> List<T> findByExample(
final String entityName, final T exampleEntity, final int firstResult, final int maxResults)
throws DataAccessException {
Assert.notNull(exampleEntity, "Example entity must not be null");
return executeWithNativeSession(new HibernateCallback<List<T>>() {
@Override
@SuppressWarnings("unchecked")
public List<T> doInHibernate(Session session) throws HibernateException {
Criteria executableCriteria = (entityName != null ?
session.createCriteria(entityName) : session.createCriteria(exampleEntity.getClass()));
executableCriteria.add(Example.create(exampleEntity));
prepareCriteria(executableCriteria);
if (firstResult >= 0) {
executableCriteria.setFirstResult(firstResult);
}
if (maxResults > 0) {
executableCriteria.setMaxResults(maxResults);
}
return executableCriteria.list();
}
});
}
@Override
public <T> List<T> findByExample(
final String entityName, final T exampleEntity, final int firstResult, final int maxResults)
throws DataAccessException {
Assert.notNull(exampleEntity, "Example entity must not be null");
return executeWithNativeSession(new HibernateCallback<List<T>>() {
@Override
@SuppressWarnings("unchecked")
public List<T> doInHibernate(Session session) throws HibernateException {
Criteria executableCriteria = (entityName != null ?
session.createCriteria(entityName) : session.createCriteria(exampleEntity.getClass()));
executableCriteria.add(Example.create(exampleEntity));
prepareCriteria(executableCriteria);
if (firstResult >= 0) {
executableCriteria.setFirstResult(firstResult);
}
if (maxResults > 0) {
executableCriteria.setMaxResults(maxResults);
}
return executableCriteria.list();
}
});
}
@Override
public <T> List<T> findByExample(
final String entityName, final T exampleEntity, final int firstResult, final int maxResults)
throws DataAccessException {
Assert.notNull(exampleEntity, "Example entity must not be null");
return executeWithNativeSession(new HibernateCallback<List<T>>() {
@Override
@SuppressWarnings("unchecked")
public List<T> doInHibernate(Session session) throws HibernateException {
Criteria executableCriteria = (entityName != null ?
session.createCriteria(entityName) : session.createCriteria(exampleEntity.getClass()));
executableCriteria.add(Example.create(exampleEntity));
prepareCriteria(executableCriteria);
if (firstResult >= 0) {
executableCriteria.setFirstResult(firstResult);
}
if (maxResults > 0) {
executableCriteria.setMaxResults(maxResults);
}
return executableCriteria.list();
}
});
}
@Override
public <T> List<T> findByExample(
final String entityName, final T exampleEntity, final int firstResult, final int maxResults)
throws DataAccessException {
Assert.notNull(exampleEntity, "Example entity must not be null");
return executeWithNativeSession(new HibernateCallback<List<T>>() {
@Override
@SuppressWarnings("unchecked")
public List<T> doInHibernate(Session session) throws HibernateException {
Criteria executableCriteria = (entityName != null ?
session.createCriteria(entityName) : session.createCriteria(exampleEntity.getClass()));
executableCriteria.add(Example.create(exampleEntity));
prepareCriteria(executableCriteria);
if (firstResult >= 0) {
executableCriteria.setFirstResult(firstResult);
}
if (maxResults > 0) {
executableCriteria.setMaxResults(maxResults);
}
return executableCriteria.list();
}
});
}
public void testSimpleQBE() throws Exception {
deleteData();
initData();
Session s = openSession();
Transaction t = s.beginTransaction();
Componentizable master = getMaster("hibernate", "open sourc%", "open source1");
Criteria crit = s.createCriteria(Componentizable.class);
Example ex = Example.create(master).enableLike();
crit.add(ex);
List result = crit.list();
assertNotNull(result);
assertEquals(1, result.size());
t.commit();
s.close();
}
public void testJunctionNotExpressionQBE() throws Exception {
deleteData();
initData();
Session s = openSession();
Transaction t = s.beginTransaction();
Componentizable master = getMaster("hibernate", null, "ope%");
Criteria crit = s.createCriteria(Componentizable.class);
Example ex = Example.create(master).enableLike();
crit.add(Expression.or(Expression.not(ex), ex));
List result = crit.list();
assertNotNull(result);
assertEquals(2, result.size());
t.commit();
s.close();
}
@SuppressWarnings("unchecked")
@Override
public List<T> findByExample(T exampleInstance, String... excludeProperty) {
try {
Criteria crit = getSession().createCriteria(getPersistentClass());
Example example = Example.create(exampleInstance);
for (String exclude : excludeProperty) {
example.excludeProperty(exclude);
}
crit.add(example);
return crit.list();
} catch (Exception e) {
// e.printStackTrace();
getTransaction().rollback();
return null;
}
}
/**
* @Title: countByExample
* @Description: 根据模型统计
* @param @param entityBean
* @param @return
* @return int
*/
public <T> int countByExample(final T obj) {
return (Integer) getHibernateTemplate().executeWithNativeSession(new HibernateCallback<Integer>() {
public Integer doInHibernate(Session s) throws HibernateException, SQLException {
// 组装属性
Criteria criteria = s.createCriteria(obj.getClass()).setProjection(Projections.projectionList().add(Projections.rowCount()))
.add(Example.create(obj));
if (getHibernateTemplate().isCacheQueries()) {
criteria.setCacheable(true);
if (getHibernateTemplate().getQueryCacheRegion() != null)
criteria.setCacheRegion(getHibernateTemplate().getQueryCacheRegion());
}
if (getHibernateTemplate().getFetchSize() > 0)
criteria.setFetchSize(getHibernateTemplate().getFetchSize());
if (getHibernateTemplate().getMaxResults() > 0)
criteria.setMaxResults(getHibernateTemplate().getMaxResults());
SessionFactoryUtils.applyTransactionTimeout(criteria, getSessionFactory());
return (Integer) criteria.uniqueResult();
}
});
}
public List<Users> search(Users users) {
Object execute = super.getHibernateTemplate().execute(new HibernateCallback<Object>() {
public Object doInHibernate(Session session) throws HibernateException {
Criteria criteria = session.createCriteria(Users.class);
if(users != null)
criteria.add(Example.create(users));
return criteria.list();
}
});
return (List<Users>) execute;
}
public void testExcludingQBE() throws Exception {
deleteData();
initData();
Session s = openSession();
Transaction t = s.beginTransaction();
Componentizable master = getMaster("hibernate", null, "ope%");
Criteria crit = s.createCriteria(Componentizable.class);
Example ex = Example.create(master).enableLike()
.excludeProperty("component.subComponent");
crit.add(ex);
List result = crit.list();
assertNotNull(result);
assertEquals(3, result.size());
master = getMaster("hibernate", "ORM tool", "fake stuff");
crit = s.createCriteria(Componentizable.class);
ex = Example.create(master).enableLike()
.excludeProperty("component.subComponent.subName1");
crit.add(ex);
result = crit.list();
assertNotNull(result);
assertEquals(1, result.size());
t.commit();
s.close();
}
public void testEscapeCharacter() {
Session session = openSession();
Transaction t = session.beginTransaction();
Course c1 = new Course();
c1.setCourseCode( "course-1" );
c1.setDescription( "%1" );
Course c2 = new Course();
c2.setCourseCode( "course-2" );
c2.setDescription( "%2" );
Course c3 = new Course();
c3.setCourseCode( "course-3" );
c3.setDescription( "control" );
session.persist( c1 );
session.persist( c2 );
session.persist( c3 );
session.flush();
session.clear();
// finds all courses which have a description equal to '%1'
Course example = new Course();
example.setDescription( "&%1" );
List result = session.createCriteria( Course.class )
.add( Example.create( example ).ignoreCase().enableLike().setEscapeCharacter( new Character( '&' ) ) )
.list();
assertEquals( 1, result.size() );
// finds all courses which contain '%' as the first char in the description
example.setDescription( "&%%" );
result = session.createCriteria( Course.class )
.add( Example.create( example ).ignoreCase().enableLike().setEscapeCharacter( new Character( '&' ) ) )
.list();
assertEquals( 2, result.size() );
session.createQuery( "delete Course" ).executeUpdate();
t.commit();
session.close();
}
/**
* Demonstrates query by example
*/
public void viewAuctionsByDescription(String description, int condition) throws Exception {
String msg = "Viewing auctions containing: " + description;
if (condition>0) msg += " with condition: " + condition + "/10";
AuctionItem item = new AuctionItem();
item.setDescription(description);
item.setCondition(condition);
Session s = factory.openSession();
Transaction tx=null;
try {
tx = s.beginTransaction();
Iterator iter = s.createCriteria(AuctionItem.class)
.add( Example.create(item)
.enableLike(MatchMode.ANYWHERE)
.ignoreCase()
.excludeZeroes()
)
.list()
.iterator();
System.out.println(msg);
while ( iter.hasNext() ) {
item = (AuctionItem) iter.next();
System.out.println("Item: " + item.getId() + " - " + item.getDescription() );
}
System.out.println();
tx.commit();
}
catch (Exception e) {
if (tx!=null) tx.rollback();
throw e;
}
finally {
s.close();
}
}
/**
* 根据实体模版查找
*
* @param entityName
* @param exampleEntity
* @return
*/
public List findByExample(final String entityName,
final Object exampleEntity) {
Assert.notNull(exampleEntity, "Example entity must not be null");
Criteria executableCriteria = (entityName != null ? getSession()
.createCriteria(entityName) : getSession().createCriteria(
exampleEntity.getClass()));
executableCriteria.add(Example.create(exampleEntity));
return executableCriteria.list();
}
@GET
@Produces("application/json")
@Path("/get")
public List<HibernateEntity> get() {
final Session session = sessionFactory.openSession();
Criteria criteria = session.createCriteria(HibernateEntity.class)
.add(Example.create(HibernateEntity.builder()
.name("test")
.build()));
return criteria.list();
}
@Override
@SuppressWarnings("unchecked")
public List<ISoapBoxEntity> find(ISoapBoxEntity entity) {
EntityManager manager = ConnectionDB.getManager();
manager.clear();
Session sessao = (Session) manager.getDelegate();
Example example = Example.create(entity);
example.excludeZeroes();
Criteria criteria = sessao.createCriteria(entity.getClass());
criteria.add(example);
return criteria.list();
}
public List findByExample(User instance) {
log.debug("finding User instance by example");
try {
List results = getSession().createCriteria(User.class)
.add(Example.create(instance)).list();
log.debug("find by example successful, result size: "
+ results.size());
return results;
} catch (RuntimeException re) {
log.error("find by example failed", re);
throw re;
}
}
public List findByExample(StudentSheet instance) {
log.debug("finding StudentSheet instance by example");
try {
List results = getSession()
.createCriteria(StudentSheet.class)
.add(Example.create(instance)).list();
log.debug("find by example successful, result size: "
+ results.size());
return results;
} catch (RuntimeException re) {
log.error("find by example failed", re);
throw re;
}
}
public List findByExample(SignInfo instance) {
log.debug("finding SignInfo instance by example");
try {
List results = getSession()
.createCriteria(SignInfo.class)
.add(Example.create(instance)).list();
log.debug("find by example successful, result size: "
+ results.size());
return results;
} catch (RuntimeException re) {
log.error("find by example failed", re);
throw re;
}
}
public List findByExample(Student instance) {
log.debug("finding Student instance by example");
try {
List results = getSession()
.createCriteria(Student.class)
.add(Example.create(instance)).list();
log.debug("find by example successful, result size: "
+ results.size());
return results;
} catch (RuntimeException re) {
log.error("find by example failed", re);
throw re;
}
}
public List findByExample(Course instance) {
log.debug("finding Course instance by example");
try {
List results = getSession()
.createCriteria(Course.class)
.add(Example.create(instance)).list();
log.debug("find by example successful, result size: "
+ results.size());
return results;
} catch (RuntimeException re) {
log.error("find by example failed", re);
throw re;
}
}
/**
* @see org.sakaiproject.api.common.edu.person.SakaiPersonManager#findSakaiPerson(org.sakaiproject.api.common.edu.person.SakaiPerson)
*/
public List findSakaiPerson(final SakaiPerson queryByExample)
{
if (log.isDebugEnabled())
{
log.debug("findSakaiPerson(SakaiPerson {})", queryByExample);
}
if (queryByExample == null) throw new IllegalArgumentException("Illegal queryByExample argument passed!");
final HibernateCallback hcb = new HibernateCallback()
{
public Object doInHibernate(Session session) throws HibernateException
{
Criteria criteria = session.createCriteria(queryByExample.getClass());
criteria.add(Example.create(queryByExample));
// criteria.setCacheable(cacheFindSakaiPersonSakaiPerson);
return criteria.list();
}
};
log.debug("return getHibernateTemplate().executeFind(hcb);");
List hb = (List) getHibernateTemplate().execute(hcb);
if (photoService.overRidesDefault()) {
return getDiskPhotosForList(hb);
} else {
return hb;
}
}
/**
* @see org.sakaiproject.api.common.edu.person.SakaiPersonManager#findSakaiPerson(org.sakaiproject.api.common.edu.person.SakaiPerson)
*/
public List findSakaiPerson(final SakaiPerson queryByExample)
{
if (log.isDebugEnabled())
{
log.debug("findSakaiPerson(SakaiPerson {})", queryByExample);
}
if (queryByExample == null) throw new IllegalArgumentException("Illegal queryByExample argument passed!");
final HibernateCallback hcb = new HibernateCallback()
{
public Object doInHibernate(Session session) throws HibernateException
{
Criteria criteria = session.createCriteria(queryByExample.getClass());
criteria.add(Example.create(queryByExample));
// criteria.setCacheable(cacheFindSakaiPersonSakaiPerson);
return criteria.list();
}
};
log.debug("return getHibernateTemplate().executeFind(hcb);");
List hb = (List) getHibernateTemplate().execute(hcb);
if (photoService.overRidesDefault()) {
return getDiskPhotosForList(hb);
} else {
return hb;
}
}
/**
* Get a hibernate Example object that excludes zeroes values and excludes
* all boolean -primitive and wrapper class- attributes of a given object.
* @param instance given object for a build a Example object.
* @return a hibernate Example object.
*/
public static Example excludeBooleanFields (Object instance) {
Example result = Example.create(instance).excludeZeroes();
Set<String> fieldNames = getFieldNamesByType(instance, Boolean.class);
fieldNames.addAll(getFieldNamesByType(instance, Boolean.TYPE));
for (String fieldName : fieldNames) {
result.excludeProperty(fieldName);
}
return result;
}
/**
* 根据实体模版查找
*
* @param entityName
* @param exampleEntity
* @return
*/
public List findByExample(final String entityName,
final Object exampleEntity) {
Assert.notNull(exampleEntity, "Example entity must not be null");
Criteria executableCriteria = (entityName != null ? getSession()
.createCriteria(entityName) : getSession().createCriteria(
exampleEntity.getClass()));
executableCriteria.add(Example.create(exampleEntity));
return executableCriteria.list();
}
public void testExample() throws Exception {
Session s = openSession();
Transaction t = s.beginTransaction();
Master m = new Master();
m.setName("name");
m.setX(5);
m.setOtherMaster(m);
s.save(m);
t.commit();
s.close();
s = openSession();
t = s.beginTransaction();
Master m1 = (Master) s.createCriteria(Master.class)
.add( Example.create(m).enableLike().ignoreCase().excludeProperty("bigDecimal") )
.uniqueResult();
assertTrue( m1.getOtherMaster()==m1 );
m1 = (Master) s.createCriteria(Master.class)
.add( Expression.eq("name", "foobar") )
.uniqueResult();
assertTrue( m1==null );
m1 = (Master) s.createCriteria(Master.class)
.add( Example.create(m).excludeProperty("bigDecimal") )
.createCriteria("otherMaster")
.add( Example.create(m).excludeZeroes().excludeProperty("bigDecimal") )
.uniqueResult();
assertTrue( m1.getOtherMaster()==m1 );
Master m2 = (Master) s.createCriteria(Master.class)
.add( Example.create(m).excludeNone().excludeProperty("bigDecimal") )
.uniqueResult();
assertTrue( m2==m1 );
m.setName(null);
m2 = (Master) s.createCriteria(Master.class)
.add( Example.create(m).excludeNone().excludeProperty("bigDecimal") )
.uniqueResult();
assertTrue( null==m2 );
if (getDialect() instanceof HSQLDialect) { m1.setOtherMaster(null); s.flush(); }
s.delete(m1);
t.commit();
s.close();
}
private List<Entity> searchByName(String name) {
final Session session = sf.openSession();
Criteria criteria = session.createCriteria(Entity.class)
.add(Example.create(new Entity(name)));
return criteria.list();
}