Objectos :: auto :: Annotations framework in the java class library
Objectos :: auto :: Annotations framework in the java class library
Overview:
Objectos :: auto :: Annotations is a framework for providing annotation support for automated code generating tools in the Java library.This article will conduct in -depth analysis of the technical details of the framework, including the explanation of usage, principles, and example code.
1. How to use:
Objectos :: auto :: Annotations framework is very simple. You only need to add a specific annotation to the target class or method to achieve automated code generation.This framework provides a series of annotations to define various attributes and behaviors in the generated code.
2. Framework principle:
Objectos :: auto :: Annotations framework is implemented based on the Java reflection mechanism.During the compilation, the framework will scan the annotations in the source code, analyze the information in the annotation, and generate the corresponding code based on this information.The generated code can be Getter and Setter methods, Equals and HashCode methods, and even the code of the entire class.
3. Note list:
Objectos :: auto :: Annotations framework provides the following common annotations:
-@Autogetter: automatically generate the getter method.
-@Autosetter: automatically generate the setter method.
-@Autoequals: Equals method automatically.
-@Autohashcode: Automatically generate the HashCode method.
-@Autotostring: Automatically generate the Tostring method.
4. Note parameters:
These annotations can accept different parameters and use the behavior of customized code.For example, using @Autoequals annotations can specify a list of attributes to be compared, or specify the attributes that ignore the comparison.Use @Autotostring annotation to specify the format of the generated string.
5. Example code:
The following is a sample code that demonstrates how to use ObjectOS :: Auto :: Annitations framework to generate the getter and setter method:
@AutoGetter
@AutoSetter
public class Person {
private String name;
private int age;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
}
In the above code, by adding @Autogetter and @Autosetter to the Person class, you can automatically generate the Getter and Setter method of Name and Age attributes.
6. Summary:
Through objectOS :: Auto :: Annotations framework, we can easily add annotation support to the automated code generation tool in the Java library.This framework uses the Java's reflection mechanism to analyze the annotation and generate the corresponding code during the compilation period.By using different annotations and parameters, we can customize the behavior of the generated code.Hope this article will help the technical details of ObjectOS :: Auto :: Annotation's framework.
The above is an introduction to the in -depth analysis of the technical details of Objectos in the Java class library :: auto :: Annotations framework, which introduces the explanation of the method, principles and example code of the framework.Through this framework, it can more conveniently add annotation support to the automation code generation tool to improve the development efficiency of code.
