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迭代期間從另一個QueryDSL對象簡稱QueryDSl對象的名單我有兩個實體如何應用過濾器來查詢
@Entity
@Table(name = "employee")
public class Employee {
............
@ManyToMany(mappedBy = "employees")
private ArrayList<Department> departments = new ArrayList<>();
...getter..setters'
和
@Entity
@Table(name = "department")
{
...............
@ManyToMany
@JoinTable(
name = "m_employee_department",
joinColumns = @JoinColumn(name = "department_id", referencedColumnName = "department_id"),
inverseJoinColumns = @JoinColumn(name = "employee_id", referencedColumnName = "employee_id"))
private ArrayList<Employee> employees;
我使用過QueryDsl JPA。在用戶界面中,我想搜索所有具有過濾器的員工作爲部門。員工與部門之間的關係很多。出於這個原因,我想在我的QueryDsl查詢應用過濾器的 像
QDepartment department = QDepartment.department;
QEmployee employee = QEmployee.employee;
if (departments != null && departments.size() > 0) {
BooleanExpression booleanExpression = null;
for (int count = 1; count < categories.size(); count++) {
booleanExpression = booleanExpression.or(
employee.departments._____(department.get(count)));
}
builder.and(booleanExpression);
}
但問題是employee.department返回SimplePath>,我想這個迭代,這樣我可以匹配的IDS employee.departments department.id