对单表的日期、整数和字符串数据类型字段执行多列搜索?

问题描述

我正在工作 Spring Data - 多列搜索 和 Spring Data Jpa - 类型规范<T>已弃用，我想在其中搜索多个列，例如 Date (Java 8 LocalDateTime, Instant, LocalDate 等，)、Integer 和 String 数据类型.

I am working Spring Data - Multi-column searches and Spring Data Jpa - The type Specifications<T> is deprecated where I wants to search for multiple columns like Date (Java 8 LocalDateTime, Instant, LocalDate etc.,), Integer and String data types.

但根据我的代码，只考虑了 String 字段(根据 where 子句中的日志)::

But as per my code, only String fields are getting considered (as per logs in where clause)::

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搜索任何值，无论用户搜索什么，都应该能够看到数据，而不管数据类型.

Note: User can search for any value using on global search and whatever user search for, should be able to see data irrespective of data types.

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.我们该怎么做?

推荐答案

更改:

if(a.getJavaType().getSimpleName().equalsIgnoreCase("date"))

到:

if(a.getJavaType().getSimpleName().equalsIgnoreCase("LocalDate"))

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