com.github.jonpereiradev.diffobjects.builder

Class DiffReflections

java.lang.Object

com.github.jonpereiradev.diffobjects.builder.DiffReflections

public final class DiffReflections
extends java.lang.Object

Common reflections operations to execute the diff.

Since:

1.0

Author:

Jonathan Pereira

Constructor Summary

Constructors

Constructor and Description
DiffReflections()

Method Summary

Modifier and Type	Method and Description
static java.lang.reflect.Method	discoverGetter(java.lang.Class<?> diffClass, java.lang.String fieldOrMethodName) Discover the public non-args method for access a field value.
static <T> T	invoke(java.lang.Object instance, java.lang.reflect.Method method) Calls the method for the object and returns the value.
static DiffConfiguration	mapAnnotations(java.lang.Class<?> diffClass) Map the methods of the object that has the annotations for diff and stores in cache.
static <T> T	newInstance(java.lang.Class<T> clazz) Create a class instance.

Methods inherited from class java.lang.Object

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

Constructor Detail

DiffReflections

public DiffReflections()

Method Detail

mapAnnotations

public static DiffConfiguration mapAnnotations(java.lang.Class<?> diffClass)

Map the methods of the object that has the annotations for diff and stores in cache.

Parameters:

diffClass - class that have the diff annotations.

Returns:

the diff mappings of the class.

discoverGetter

public static java.lang.reflect.Method discoverGetter(java.lang.Class<?> diffClass,
                                                      java.lang.String fieldOrMethodName)

Discover the public non-args method for access a field value.

Parameters:

diffClass - the class that has the getter method.

fieldOrMethodName - the name of the field for discover or the name of the getter method.

Returns:

the getter method to get the value.

invoke

public static <T> T invoke(java.lang.Object instance,
                           java.lang.reflect.Method method)

Calls the method for the object and returns the value.

Type Parameters:

T - the type of value returned by the method.

Parameters:

instance - the object instance that have the method.

method - the getter method to get the value.

Returns:

the value returned by the getter method.

newInstance

public static <T> T newInstance(java.lang.Class<T> clazz)

Create a class instance.

Type Parameters:

T - object type that will be returned by the class.

Parameters:

clazz - class that will be used for create an instance.

Returns:

created object.

Throws:

java.lang.UnsupportedOperationException - if no default constructor exists.