/**
* 针对一个带有级联关系的对象，实现指定选择列的查询
*
* @throws SQLException
*/
@Test
public void testAssignSelectColumn() throws SQLException {
db.createTable(Person.class);
Transaction db = this.db.startTransaction();
Person p = RandomData.newInstance(Person.class);
p.setGender("F");
p.setAge(19);
db.insert(p);
System.out.println("===========testAssignSelectColumn begin==============");
{
Query<Person> t1 = QB.create(Person.class);
// 只选择指定的列
t1.setCascadeViaOuterJoin(false);
Selects select = QB.selectFrom(t1);
// select.clearSelectItems();
select.guessColumn("schoolId");
// select.column(School.Field.name);
select.guessColumn("schoolName");
select.columns(t1, "name,age,cell");
select.column(t1, "id");
List<Person> result = db.select(t1);
LogUtil.show(result.get(0));
}
{
Query<Person> t1 = QB.create(Person.class);
// 只选择指定的列
// t1.setAutoOuterJoin(false);
Selects select = QB.selectFrom(t1);
// select.clearSelectItems();
select.guessColumn("schoolId");
// select.column(School.Field.name);
select.guessColumn("schoolName");
select.columns(t1, "name,age,cell");
select.column(t1, "id");
List<Person> result = db.select(t1);
LogUtil.show(result.get(0));
}
{
Query<Person> t1 = QB.create(Person.class);
// 只选择指定的列
// t1.setAutoOuterJoin(false);
Selects select = QB.selectFrom(t1);
// select.clearSelectItems();
select.guessColumn("schoolId");
// select.column(School.Field.name);
select.guessColumn("schoolName");
select.columns(t1, "name,age,cell");
select.column(t1, "id");
t1.setCascade(false);
List<Person> result = db.select(t1.getInstance());
LogUtil.show(result.get(0));
}
db.rollback(true);
System.out.println("===========result==============");
}
/**
* 测试分组
*
* @throws SQLException
*/
@Test
public void testGroup() throws SQLException {
Transaction db = this.db.startTransaction();
Person p = RandomData.newInstance(Person.class);
p.setGender("F");
p.setAge(19);
db.insert(p);
Query<Person> t1 = QB.create(Person.class);
Selects select = QB.selectFrom(t1);
select.column(Person.Field.gender).group();
select.column(Person.Field.id).count().as("count");
select.column(Person.Field.age).min().as("minAge");
select.column(Person.Field.age).max().as("maxAge").having(Operator.GREAT, 0);
List<Map> map = db.selectAs(t1, Map.class);
db.rollback(true);
LogUtil.show(map);
}
@Test
public void testInsertNormal() throws SQLException {
Transaction db = this.db.startTransaction();
List<School> schools = db.selectAll(School.class);
School s = schools.get(0);
Person p = new Person();
p.setAge(12);
p.setBirthDay(new Date());
p.setCell("123433454");
p.setFriendComment(new String[] {"AA"});
p.setGender("M");
p.setLastModified(new Date());
p.setParentId(1);
p.setSchool(s);
p.setName("刘备");
p.setSchoolId(3);
System.out.println(s);
db.insert(p);
db.rollback(true);
}