Add custom extension of the org.springframework.util.ReflectionUtils utility class.

Added getFieldValue(:Object, :String) method to get the value of a named Field on a Object.

Added variants of makeAccessible(..) method in org.springframework.util.ReflectionUtils to also return the (accessible) Member.

spring-data-geode-test/src/main/java/org/springframework/data/gemfire/tests/util/ReflectionUtils.java

@@ -0,0 +1,70 @@
+/*
+ *  Copyright 2019 the original author or authors.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *       https://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+ *  or implied. See the License for the specific language governing
+ *  permissions and limitations under the License.
+ */
+package org.springframework.data.gemfire.tests.util;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.Field;
+import java.lang.reflect.Method;
+import java.util.Optional;
+
+import org.springframework.util.Assert;
+
+/**
+ * Utility {@link Class} for performing reflective and introspective Java {@link Object} operations.
+ *
+ * @author John Blum
+ * @see java.lang.Class
+ * @see java.lang.Object
+ * @see java.lang.reflect.Constructor
+ * @see java.lang.reflect.Field
+ * @see java.lang.reflect.Method
+ * @see org.springframework.util.ReflectionUtils
+ * @since 0.0.10
+ */
+@SuppressWarnings("unused")
+public abstract class ReflectionUtils extends org.springframework.util.ReflectionUtils {
+
+	@SuppressWarnings("unchecked")
+	public static <T> T getFieldValue(Object target, String fieldName) throws NoSuchFieldException {
+
+		Assert.notNull(target, "Target object must not be null");
+		Assert.hasText(fieldName, String.format("Field name [%s] must be specified", fieldName));
+
+		Field field = findField(target.getClass(), fieldName);
+
+		return Optional.ofNullable(field)
+			.map(ReflectionUtils::makeAccessibleReturnField)
+			.map(it -> (T) getField(it, target))
+			.orElseThrow(() ->
+				new NoSuchFieldException(String.format("Field with name [%s] was not found on Object of type [%s]",
+					fieldName, target.getClass().getName())));
+	}
+
+	public static Constructor makeAccessibleReturnConstructor(Constructor constructor) {
+		makeAccessible(constructor);
+		return constructor;
+	}
+
+	public static Field makeAccessibleReturnField(Field field) {
+		makeAccessible(field);
+		return field;
+	}
+
+	public static Method makeAccessibleReturnMethod(Method method) {
+		makeAccessible(method);
+		return method;
+	}
+}