public void Disjunction()
{
ICriteriaBuilder cb = EJBContainer.Instance.EntityManager.GetCriteriaBuilder();
ICriteriaQuery cq = cb.CreateQuery();
IRoot r = cq.From("Students");
IPredicate criteria = cb.Disjunction();
IParameterExpression pr = cb.Parameter(System.Data.SqlDbType.Int, "3");
criteria = cb.Or(criteria,
cb.Equal(r.Get("SequenceNumber"), pr)
);
pr = cb.Parameter(System.Data.SqlDbType.Int, "'Jonas'");
criteria = cb.Or(criteria,
cb.Equal(r.Get("FirstName"), pr)
);
pr = cb.Parameter(System.Data.SqlDbType.Int, "'Petraitis'");
criteria = cb.Or(criteria,
cb.Equal(r.Get("LastName"), pr)
);
Assert.AreEqual("Students.SequenceNumber = 3 OR Students.FirstName = 'Jonas' OR Students.LastName = 'Petraitis'", criteria.ExpressionValue);
}
public void Or()
{
ICriteriaBuilder cb = EJBContainer.Instance.EntityManager.GetCriteriaBuilder();
ICriteriaQuery cc = cb.CreateQuery();
IRoot r = cc.From("Students");
IPredicate left = cb.Equal(r.Get("Name"), cb.Literal("'Jonas'"));
IPredicate right = cb.Equal(r.Get("Faculty_Id"), cb.Literal("3"));
IExpression expr = cb.Or(left, right);
Assert.AreEqual("Students.Name = 'Jonas' OR Students.Faculty_Id = 3", expr.ExpressionValue);
}
public void EqualWithoutQuotes()
{
ICriteriaBuilder cb = EJBContainer.Instance.EntityManager.GetCriteriaBuilder();
ICriteriaQuery cq = cb.CreateQuery();
IRoot r = cq.From("Students");
IPredicate exp = cb.Equal(r.Get("FirstName"), r.Get("LastName"));
Assert.AreEqual("Students.FirstName = Students.LastName", exp.ExpressionValue);
}
public void EqualWithQuotes()
{
ICriteriaBuilder cb = EJBContainer.Instance.EntityManager.GetCriteriaBuilder();
ICriteriaQuery cq = cb.CreateQuery();
IRoot r = cq.From("Students");
IPredicate exp = cb.Equal(cb.Literal("'FirstName'"), cb.Literal("'Jonas'"));
Assert.AreEqual("'FirstName' = 'Jonas'", exp.ExpressionValue);
}
public void SelectWhere()
{
ICriteriaBuilder cb = EJBContainer.Instance.EntityManager.GetCriteriaBuilder();
ICriteriaQuery cc = cb.CreateQuery();
IRoot r = cc.From("Students");
cc.Select(r.Get("FirstName"));
cc.Where(cb.Equal(r.Get("FirstName"), cb.Literal("'Jonas'")));
Assert.AreEqual("SELECT Students.FirstName FROM Students WHERE Students.FirstName = 'Jonas'", cc.ExpressionValue);
}
public void ParameterExpressoin_IntType()
{
ICriteriaBuilder cb = EJBContainer.Instance.EntityManager.GetCriteriaBuilder();
ICriteriaQuery cq = cb.CreateQuery();
IRoot r = cq.From("Students");
IParameterExpression pr = cb.Parameter(System.Data.SqlDbType.Int, "3");
IPredicate exp = cb.Equal(r.Get("SequenceNumber"), pr);
Assert.AreEqual("Students.SequenceNumber = 3", exp.ExpressionValue);
}
public void ParameterExpressoin_StringType()
{
ICriteriaBuilder cb = EJBContainer.Instance.EntityManager.GetCriteriaBuilder();
ICriteriaQuery cq = cb.CreateQuery();
IRoot r = cq.From("Students");
IParameterExpression pr = cb.Parameter(System.Data.SqlDbType.VarChar, "Jonas");
IPredicate exp = cb.Equal(r.Get("FirstName"), pr);
Assert.AreEqual("Students.FirstName = 'Jonas'", exp.ExpressionValue);
}
public void Not()
{
ICriteriaBuilder cb = EJBContainer.Instance.EntityManager.GetCriteriaBuilder();
ICriteriaQuery cq = cb.CreateQuery();
IRoot r = cq.From("Students");
IPredicate exp = cb.Equal(r.Get("SequenceNumber"), cb.Literal("2"));
IPredicate pred = cb.Not(exp);
Assert.AreEqual("NOT (Students.SequenceNumber = 2)", pred.ExpressionValue);
}