FLUENT Reflection framework technical principles of technical principles in the Java library
FLUENT Reflection framework technical principles of technical principles in the Java library
Overview:
FLUENT Reflection is a Java -based framework that provides a simple and elegant way to perform Java reflection operations.By optimizing and packaging standard reflex APIs, the Fluent Reflection makes the use of Java reflection more easy to read and use it.This article will introduce the technical principles of Fluent Reflection and show its application in the Java class library through a practical application case.
Technical principle:
Java reflection is a powerful mechanism that can analyze and operate the structure and behavior of the Java class during runtime.However, the standard reflex API is not intuitive and easy to use, and a large number of model code needs to be written.FLUENT Reflection simplifies the complexity of reflection operations through chain calling and optimizing API design.
The technical principles of Fluent Reflection mainly include the following aspects:
1. Chain calls: Fluent Reflection realizes smooth expression of reflection operations by chain calling.By returning the instance itself in the method, continuous calls for multiple reflection operations can be achieved, and the code can be read higher.
2. Static introduction: Through static import (Static Import), the method of calling the Fluent Reflection can be directly called without explicitly specifying the class name.This can make the code more concise and reduce the writing of the model code.
3. Simplified operation: Fluent Reflection provides some simplified methods for common operations by optimizing the API design.For example, by using naming parameters, the fields or methods to specify the access to access can be clearly specified, so as to avoid potential errors caused by specified names by the string.
Applications:
The following cases are used to display the application of FLUENT Reflection in the Java library.Suppose we have a Person class that contains two private fields of names (names) and ages, and provides access to these two fields.
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;
}
}
We can use FLUENT Reflection to simplify the reflex operation of the Person class.First of all, we need to introduce the dependencies of Fluent Reflection:
<dependency>
<groupId>com.github.rafapi</groupId>
<artifactId>fluent-reflection</artifactId>
<version>1.1.0</version>
</dependency>
Then, we can use FLUENT Reflection to obtain the fields of the Person class and set its value, as shown below:
import static com.github.rafapi.fluentreflection.FluentReflection.*;
public class Main {
public static void main(String[] args) {
Person person = new Person();
on(person)
.set("name").to("John Doe")
.set("age").to(30);
System.out.println (Person.getName ()); // Output: John Doe
System.out.println (Person.getage ()); // Output: 30
}
}
Through Fluent Reflection, we can directly use the field name to set its value without calling the tedious reflex API.In this way, the code is more concise and easy to read.
in conclusion:
The FLUENT Reflection framework is simplified to reflect the complexity of the Java reflection operation by optimizing and packaging standard reflex API.Through chain calls, static import and optimization API design, the Fluent Reflection makes the reflection operation more easy to read and use it.Through a practical application case, we show the application of Fluent Reflection in the Java library.It is hoped that this article can help readers understand the technical principles and applications of the Fluent Reflection framework.
