Package dev.daymor.sakuraboot.util

Class ReflectionUtils

java.lang.Object

dev.daymor.sakuraboot.util.ReflectionUtils

public class ReflectionUtils
extends Object

Utility class for reflection.

Since:

0.1.1

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static final record	ReflectionUtils.ClassInfo	Class information with the actual class and parameters type.

Constructor Summary

Constructors

Constructor	Description
ReflectionUtils()

Method Summary

Modifier and Type	Method	Description
<T> Class<T>	findGenericTypeFromInterface(Class<?> clazz, String interfaceTypeName)	Find bean class from interface.
<T> Class<T>	findGenericTypeFromInterface(Class<?> clazz, String interfaceTypeName, int typeIndex)	Find bean class from interface.
ReflectionUtils.ClassInfo	getClassInfo(Type type, ReflectionUtils.ClassInfo classInfo)	Get the actual class from the type.
Field	getField(Class<?> clazz, String fieldName)	Get a field from a class and make it accessible.
boolean	isFieldExists(Class<?> clazz, String fieldName)	Check if a field exists from a class.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

ReflectionUtils

public ReflectionUtils()

Method Details

isFieldExists

public boolean isFieldExists(Class<?> clazz,
 String fieldName)

Check if a field exists from a class. Get the field from the superclass if the field is not found in the class.

Parameters:

clazz - The class to check the field from.

fieldName - The name of the field.

Returns:

true if the field exists, false otherwise.

getField

public Field getField(Class<?> clazz,
 String fieldName)

Get a field from a class and make it accessible. Get the field from the superclass if the field is not found in the class.

Parameters:

clazz - The class to get the field from.

fieldName - The name of the field.

Returns:

A Field.

Throws:

BadRequestException - If the field is not found.

findGenericTypeFromInterface

public <T> Class<T> findGenericTypeFromInterface(Class<?> clazz,
 String interfaceTypeName,
 int typeIndex)

Find bean class from interface.

Type Parameters:

T - the type of the bean.

Parameters:

clazz - the class of the bean.

interfaceTypeName - the interface type name.

typeIndex - index of the type from the interface.

Returns:

the bean class retrieved from the interface.

findGenericTypeFromInterface

public <T> Class<T> findGenericTypeFromInterface(Class<?> clazz,
 String interfaceTypeName)

Find bean class from interface.

Type Parameters:

T - the type of the bean.

Parameters:

clazz - the class of the bean.

interfaceTypeName - the interface type name.

Returns:

the bean class retrieved from the interface.

getClassInfo

public ReflectionUtils.ClassInfo getClassInfo(Type type,
 @Nullable
 ReflectionUtils.ClassInfo classInfo)

Get the actual class from the type. If reflection can't find the actual class, return a raw class or upper-bound or lower-bound class. If the raw class is returned, return also the parameters type.

Parameters:

type - The type to get the class from.

classInfo - The actual class information that can help to find the class.

Returns:

The class information of the given type.