added a wrapper for easy ReflectionHelper calls

src/main/java/com/n9mtq4/reflection/ReflectionWrapper.java

@@ -0,0 +1,149 @@
+package com.n9mtq4.reflection;
+
+import java.io.Serializable;
+import java.lang.reflect.Field;
+import java.lang.reflect.Method;
+
+import static com.n9mtq4.reflection.ReflectionHelper.*;
+
+/**
+ * A class that when given an object, it will simplify the calls to ReflectionHelper
+ * by automatically passing the obj param to the ReflectionHelper methods.
+ * This class takes the static methods from ReflectionHelper and
+ * implements them in an instance format.<br>
+ * an example:<br>
+ * <code>
+ *     TestObject obj = new TestObject();<br>
+ *     //these next two lines are the same.<br>
+ *     ReflectionHelper.callVoidMethod("printStuff", obj);<br>
+ *     ReflectionWrapper.attachToObject(obj).callMethod("printStuff");<br>
+ * </code>
+ * Created by will on 8/19/15 at 11:59 AM.
+ * 
+ * @param <E> the type of the object that the wrapper contains
+ * @see ReflectionHelper
+ * @since v1.1
+ */
+@SuppressWarnings("unused")
+public class ReflectionWrapper<E> implements Serializable {
+
+	/**
+	 * Wraps a new instance of an object (E) with the ReflectionWrapper.
+	 *
+	 * @param <E> the type of the object
+	 * @param clazz the class to make a new instance of
+	 * @param classParams an array of classes that the args are
+	 * @param args the args to pass to the class' constructor
+	 * @return the reflection wrapper
+	 */
+	public static <E> ReflectionWrapper<E> newInstance(Class clazz, Class[] classParams, Object... args) {
+		E object = callConstructor(clazz, classParams, args);
+		return new ReflectionWrapper<E>(object);
+	}
+
+	/**
+	 * Wraps a new instance of an object (E) with the ReflectionWrapper.
+	 *
+	 * @param <E> the type of the object
+	 * @param clazz the class to make a new instance of
+	 * @param args the args to pass to the class' constructor
+	 * @return the reflection wrapper
+	 */
+	public static <E> ReflectionWrapper<E> newInstance(Class clazz, Object... args) {
+		E object = callConstructor(clazz, args);
+		return new ReflectionWrapper<E>(object);
+	}
+
+	/**
+	 * Wraps an existing object with the ReflectionWrapper.
+	 *
+	 * @param <E> the type of the object
+	 * @param object the object
+	 * @return the reflection wrapper
+	 */
+	public static <E> ReflectionWrapper<E> attachToObject(E object) {
+		return new ReflectionWrapper<E>(object);
+	}
+
+	private E object;
+
+	private ReflectionWrapper(E object) {
+		this.object = object;
+	}
+
+	/**
+	 * Gets a member field from the object.
+	 *
+	 * @param fieldName the field name
+	 * @return the field
+	 */
+	public <R> R getField(String fieldName) {
+		return getObject(fieldName, object);
+	}
+
+	/**
+	 * Gets a member field from the object.
+	 *
+	 * @param field the field
+	 * @return the field
+	 */
+	public <R> R getField(Field field) {
+		return getObject(field, object);
+	}
+
+	/**
+	 * Calls a member method from the object.
+	 *
+	 * @param <R> what the method returns
+	 * @param name the name of the method
+	 * @param args the args for the method
+	 * @return the return of the method, null if the method is void
+	 */
+	public <R> R callMethod(String name, Object... args) {
+		return callObjectMethod(name, object, args);
+	}
+
+	/**
+	 * Calls a member method from the object.
+	 *
+	 * @param <R> what the method returns
+	 * @param name the name of the method
+	 * @param classParams the class params
+	 * @param args the args for the method
+	 * @return the return of the method, null if the method is void
+	 */
+	public <R> R callMethod(String name, Class[] classParams, Object... args) {
+		return callObjectMethod(name, object, classParams, args);
+	}
+
+	/**
+	 * Calls a member method from the object.
+	 *
+	 * @param <R> what the method returns
+	 * @param method the method to call
+	 * @param args the args for the method
+	 * @return the return of the method, null if the method is void
+	 */
+	public <R> R callMethod(Method method, Object... args) {
+		return callObjectMethod(method, object, args);
+	}
+
+
+	/**
+	 * Gets the object that the wrapper contains.
+	 *
+	 * @return the object the wrapper contains
+	 */
+	public E getWrappedObject() {
+		return object;
+	}
+
+	/**
+	 * @see Object#toString()
+	 * */
+	@Override
+	public String toString() {
+		return "ReflectionWrapper: " + object.toString();
+	}
+
+}