我正在工作Spring Data - Multi-column searches和 Spring Data Jpa - The type Specifications<T> is deprecated我想搜索多列,例如 Date
(Java 8 LocalDateTime
、Instant
、LocalDate
等) 、Integer
和 String
数据类型。
但根据我的代码,仅考虑 String
字段(根据 where
子句中的日志)::
select
employee0_.employee_id as employee1_0_,
employee0_.birth_date as birth_da2_0_,
employee0_.email_id as email_id3_0_,
employee0_.first_name as first_na4_0_,
employee0_.last_name as last_nam5_0_,
employee0_.project_association as project_6_0_,
employee0_.status as status7_0_
from
employee employee0_
where
employee0_.first_name like ?
or employee0_.email_id like ?
or employee0_.status like ?
or employee0_.last_name like ?
下面是我开发的代码。
Employee.java
@Builder
@Data
@AllArgsConstructor
@NoArgsConstructor
@Entity
public class Employee implements Serializable{
private static final long serialVersionUID = 1L;
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Column(name="EMPLOYEE_ID")
private Long employeeId;
@Column(name="FIRST_NAME")
private String firstName;
@Column(name="LAST_NAME")
private String lastName;
@Column(name="EMAIL_ID")
private String email;
@Column(name="STATUS")
private String status;
@Column(name="BIRTH_DATE")
private LocalDate birthDate;
@Column(name="PROJECT_ASSOCIATION")
private Integer projectAssociation;
}
注意:用户可以使用全局搜索来搜索任何值,并且无论用户搜索什么,都应该能够看到数据,无论数据类型如何。
EmployeeSpecification.java
public class EmployeeSpecification {
public static Specification<Employee> textInAllColumns(String text, List<String> attributes) {
if (!text.contains("%")) {
text = "%" + text + "%";
}
final String finalText = text;
return (root, query, builder) -> builder
.or(root.getModel().getDeclaredSingularAttributes().stream().filter(a -> {
if (a.getJavaType().getSimpleName().equalsIgnoreCase("String")) {
return true;
}else if(a.getJavaType().getSimpleName().equalsIgnoreCase("date")) {
return true;
}
else {
return false;
}
}).map(a -> builder.like(root.get(a.getName()), finalText)).toArray(Predicate[]::new));
}
}
但是这种方法只考虑字符串字段,而不考虑日期和整数数据类型。我们怎样才能做到这一点?
最佳答案
更改:
if(a.getJavaType().getSimpleName().equalsIgnoreCase("date"))
至:
if(a.getJavaType().getSimpleName().equalsIgnoreCase("LocalDate"))
关于java - 对单表的日期、整数和字符串数据类型字段执行多列搜索?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/57134279/