Model using nested class in Spring boot using Mongodb
I am studying to using Mongodb in Spring boot project. I feel confused about the question below:
My database structure is like this:
"_id" : ObjectId("5bea34f2931c9613a829c3f8"),
"name" : "hzb",
"sex" : "man",
"age" : 31,
"des" : "hzb_father",
"studentScore" :
"chinese" : "88",
"english" : "93",
"des" : "hzb_child"
,
and the model in code is like:
Class Student
private String name;
private String sex;
private Integer age;
private String des
private StudentScore studentScore;
Setter getter....
Class StudentScore
private Integer Chinese;
private Integer English;
private String des;
Someone told me that use nested class is not a best practice for Java, and I use inherit class. So what are you thinking about this thought.
One more question. I want to insert some data in this database, so I want to write the code like this:
Student stu = new Student();
stu.setName("Trump");
stu.setSex("male");
stu.setAge("18");
stu.setDes("");
stu.setStudentScore(new StudentScore()100,0,"");
Is there is a way to achieve the last line code without using constructer like C#?
java mongodb spring-boot
asked Nov 13 '18 at 10:47
lin gulin gu
61
add a comment |
I am studying to using Mongodb in Spring boot project. I feel confused about the question below:
My database structure is like this:
"_id" : ObjectId("5bea34f2931c9613a829c3f8"),
"name" : "hzb",
"sex" : "man",
"age" : 31,
"des" : "hzb_father",
"studentScore" :
"chinese" : "88",
"english" : "93",
"des" : "hzb_child"
,
and the model in code is like:
Class Student
private String name;
private String sex;
private Integer age;
private String des
private StudentScore studentScore;
Setter getter....
Class StudentScore
private Integer Chinese;
private Integer English;
private String des;
Someone told me that use nested class is not a best practice for Java, and I use inherit class. So what are you thinking about this thought.
One more question. I want to insert some data in this database, so I want to write the code like this:
Student stu = new Student();
stu.setName("Trump");
stu.setSex("male");
stu.setAge("18");
stu.setDes("");
stu.setStudentScore(new StudentScore()100,0,"");
Is there is a way to achieve the last line code without using constructer like C#?
java mongodb spring-boot
asked Nov 13 '18 at 10:47
lin gulin gu
61
who tells you inheritance is better than nested class? read it here: en.wikipedia.org/wiki/Composition_over_inheritance
– Jaiwo99
Nov 13 '18 at 10:52
why not to use a constractor likestu.setStudentScore(new StudentScore(100,0,""));
– Jaiwo99
Nov 13 '18 at 10:53
add a comment |
I am studying to using Mongodb in Spring boot project. I feel confused about the question below:
My database structure is like this:
"_id" : ObjectId("5bea34f2931c9613a829c3f8"),
"name" : "hzb",
"sex" : "man",
"age" : 31,
"des" : "hzb_father",
"studentScore" :
"chinese" : "88",
"english" : "93",
"des" : "hzb_child"
,
and the model in code is like:
Class Student
private String name;
private String sex;
private Integer age;
private String des
private StudentScore studentScore;
Setter getter....
Class StudentScore
private Integer Chinese;
private Integer English;
private String des;
Someone told me that use nested class is not a best practice for Java, and I use inherit class. So what are you thinking about this thought.
One more question. I want to insert some data in this database, so I want to write the code like this:
Student stu = new Student();
stu.setName("Trump");
stu.setSex("male");
stu.setAge("18");
stu.setDes("");
stu.setStudentScore(new StudentScore()100,0,"");
Is there is a way to achieve the last line code without using constructer like C#?
java mongodb spring-boot
asked Nov 13 '18 at 10:47
lin gulin gu
61
I am studying to using Mongodb in Spring boot project. I feel confused about the question below:
My database structure is like this:
"_id" : ObjectId("5bea34f2931c9613a829c3f8"),
"name" : "hzb",
"sex" : "man",
"age" : 31,
"des" : "hzb_father",
"studentScore" :
"chinese" : "88",
"english" : "93",
"des" : "hzb_child"
,
and the model in code is like:
Class Student
private String name;
private String sex;
private Integer age;
private String des
private StudentScore studentScore;
Setter getter....
Class StudentScore
private Integer Chinese;
private Integer English;
private String des;
Someone told me that use nested class is not a best practice for Java, and I use inherit class. So what are you thinking about this thought.
One more question. I want to insert some data in this database, so I want to write the code like this:
Student stu = new Student();
stu.setName("Trump");
stu.setSex("male");
stu.setAge("18");
stu.setDes("");
stu.setStudentScore(new StudentScore()100,0,"");
Is there is a way to achieve the last line code without using constructer like C#?
java mongodb spring-boot
java mongodb spring-boot
asked Nov 13 '18 at 10:47
lin gulin gu
61
asked Nov 13 '18 at 10:47
lin gulin gu
61
asked Nov 13 '18 at 10:47
lin gulin gu
61
asked Nov 13 '18 at 10:47
lin gulin gu
61
asked Nov 13 '18 at 10:47
lin gulin gu
61
61
who tells you inheritance is better than nested class? read it here: en.wikipedia.org/wiki/Composition_over_inheritance
– Jaiwo99
Nov 13 '18 at 10:52
why not to use a constractor likestu.setStudentScore(new StudentScore(100,0,""));
– Jaiwo99
Nov 13 '18 at 10:53
add a comment |
who tells you inheritance is better than nested class? read it here: en.wikipedia.org/wiki/Composition_over_inheritance
– Jaiwo99
Nov 13 '18 at 10:52
why not to use a constractor likestu.setStudentScore(new StudentScore(100,0,""));
– Jaiwo99
Nov 13 '18 at 10:53
who tells you inheritance is better than nested class? read it here: en.wikipedia.org/wiki/Composition_over_inheritance
– Jaiwo99
Nov 13 '18 at 10:52
who tells you inheritance is better than nested class? read it here: en.wikipedia.org/wiki/Composition_over_inheritance
– Jaiwo99
Nov 13 '18 at 10:52
why not to use a constractor like
stu.setStudentScore(new StudentScore(100,0,""));– Jaiwo99
Nov 13 '18 at 10:53
why not to use a constractor like
stu.setStudentScore(new StudentScore(100,0,""));– Jaiwo99
Nov 13 '18 at 10:53
add a comment |
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who tells you inheritance is better than nested class? read it here: en.wikipedia.org/wiki/Composition_over_inheritance
– Jaiwo99
Nov 13 '18 at 10:52
why not to use a constractor like
stu.setStudentScore(new StudentScore(100,0,""));– Jaiwo99
Nov 13 '18 at 10:53