de.javanarior.utils.lang.reflect

Class Retrieve

java.lang.Object

de.javanarior.utils.lang.reflect.Retrieve

public final class Retrieve
extends Object

Retrieve values from Java Elements e.g. Annotations.

Method Summary

Methods

Modifier and Type	Method and Description
static <T extends Annotation> Object	annotationValueOnClass(Class<T> annotationClass, Class<?> annotatedClass) Retrieve the value of an Annotation on a Class.
static <T extends Annotation> Object	annotationValueOnClass(Class<T> annotationClass, String attributeName, Class<?> annotatedClass) Retrieve the value of an Annotation attribute/method on a Class.
static <T extends Annotation> Object	annotationValueOnMethod(Class<T> annotationClass, Class<?> classWithMethod, String methodName, Class<?>... parameterTypes) Retrieve the value of an Annotation on a Method.
static <T extends Annotation> Object	annotationValueOnMethod(Class<T> annotationClass, Method method) Retrieve the value of an Annotation on a Method.
static <T extends Annotation> Object	annotationValueOnMethod(Class<T> annotationClass, Method methodWithAnnotation, String attributeName) Retrieve the value of an Annotation on a Method.
static <T extends Annotation> Object	annotationValueOnMethod(Class<T> annotationClass, String attributeName, Class<?> classWithMethod, String methodName, Class<?>... parameterTypes) Retrieve the value of an Annotation on a Method.
static <T extends Annotation> Object	annotationValueOnParameter(Class<T> annotationClass, Class<?> classWithMethod, String methodNameWithParameter, String parameterName, Class<?>... parameterTypes) Retrieve the value of an Annotation on a method parameter.
static <T extends Annotation> Object	annotationValueOnParameter(Class<T> annotationClass, String attributeName, Class<?> classWithMethod, String methodNameWithParameter, String parameterName, Class<?>... parameterTypes) Retrieve the value of an Annotation on a method parameter.

Methods inherited from class java.lang.Object

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

Method Detail

annotationValueOnClass

public static <T extends Annotation> Object annotationValueOnClass(Class<T> annotationClass,
                                                   String attributeName,
                                                   Class<?> annotatedClass)

Retrieve the value of an Annotation attribute/method on a Class. To be more precise returns the value of attributeName from annationClass on annotatedClass. In case of error a ReflectionException is thrown.

Type Parameters:

T - - a annotation class

Parameters:

annotationClass - - the class of the Annotation

attributeName - - name of the attribute

annotatedClass - - the class with the Annotation

Returns:

value of the annotation attribute

annotationValueOnClass

public static <T extends Annotation> Object annotationValueOnClass(Class<T> annotationClass,
                                                   Class<?> annotatedClass)

Retrieve the value of an Annotation on a Class. The Attribute/Method 'value' is assumed as default. To be more precise returns the value of value from annationClass on annotatedClass. In case of error a ReflectionException is thrown.

Type Parameters:

T - - a annotation class

Parameters:

annotationClass - - the class of the Annotation

annotatedClass - - the class with the Annotation

Returns:

value of the annotation attribute

annotationValueOnMethod

public static <T extends Annotation> Object annotationValueOnMethod(Class<T> annotationClass,
                                                    Method methodWithAnnotation,
                                                    String attributeName)

Retrieve the value of an Annotation on a Method. To be more precise returns the value of attributeName from annationClass on methodWithAnnotation. In case of error a ReflectionException is thrown.

Type Parameters:

T - - a annotation class

Parameters:

annotationClass - - the class of the Annotation

methodWithAnnotation - - method with annotation

attributeName - - name of the attribute

Returns:

value of the annotation attribute

annotationValueOnMethod

public static <T extends Annotation> Object annotationValueOnMethod(Class<T> annotationClass,
                                                    String attributeName,
                                                    Class<?> classWithMethod,
                                                    String methodName,
                                                    Class<?>... parameterTypes)

Retrieve the value of an Annotation on a Method. To be more precise returns the value of attributeName of annotationClass from methodName of classWithMethod. In case of error a ReflectionException is thrown.

Type Parameters:

T - - a annotation class

Parameters:

annotationClass - - the class of the Annotation

attributeName - - name of the attribute

classWithMethod - - class with the method

methodName - - name of method with the annotation

parameterTypes - - parameter types of methodName

Returns:

value of the annotation attribute

annotationValueOnMethod

public static <T extends Annotation> Object annotationValueOnMethod(Class<T> annotationClass,
                                                    Method method)

Retrieve the value of an Annotation on a Method. The Attribute/Method 'value' is assumed as default. To be more precise returns the value of value from annationClass on method. In case of error a ReflectionException is thrown.

Type Parameters:

T - - a annotation class

Parameters:

annotationClass - - the class of the Annotation

method - - the method with the Annotation

Returns:

value of the annotation attribute

annotationValueOnMethod

public static <T extends Annotation> Object annotationValueOnMethod(Class<T> annotationClass,
                                                    Class<?> classWithMethod,
                                                    String methodName,
                                                    Class<?>... parameterTypes)

Retrieve the value of an Annotation on a Method. The Attribute/Method 'value' is assumed as default. To be more precise returns the value of value from annationClass of methodName of annotatedClass. In case of error a ReflectionException is thrown.

Type Parameters:

T - - a annotation class

Parameters:

annotationClass - - the class of the Annotation

classWithMethod - - class with method

methodName - - name of method with annotation

parameterTypes - - parameter types of methodName

Returns:

value of the annotation attribute

annotationValueOnParameter

public static <T extends Annotation> Object annotationValueOnParameter(Class<T> annotationClass,
                                                       String attributeName,
                                                       Class<?> classWithMethod,
                                                       String methodNameWithParameter,
                                                       String parameterName,
                                                       Class<?>... parameterTypes)

Retrieve the value of an Annotation on a method parameter. Returns the value of attributeName from annotationClass The Annotation is expected at the Method methodNameWithParameter in the class classWithMethod. If the Method is polymorphic overriden, the Signature can be provided with parameterTypes.

Type Parameters:

T - - the annotation class

Parameters:

annotationClass - - class of the annotation

attributeName - - name of the attribute

classWithMethod - - class of the method

methodNameWithParameter - - the method name

parameterName - - name of the parameter

parameterTypes - - Types of the method

Returns:

value of the annotation attribute

annotationValueOnParameter

public static <T extends Annotation> Object annotationValueOnParameter(Class<T> annotationClass,
                                                       Class<?> classWithMethod,
                                                       String methodNameWithParameter,
                                                       String parameterName,
                                                       Class<?>... parameterTypes)

Retrieve the value of an Annotation on a method parameter. The Attribute/Method 'value' is assumed as default. Returns the value of 'value' from annotationClass The Annotation is expected at the Method methodNameWithParameter in the class classWithMethod. If the Method is polymorphic overridden, the Signature can be provided with parameterTypes.

Type Parameters:

T - - the annotation class

Parameters:

annotationClass - - class of the annotation

classWithMethod - - class of the method

methodNameWithParameter - - the method name

parameterName - - name of the parameter

parameterTypes - - Types of the method parameter

Returns:

value of the annotation attribute