diff --git a/spring-data-geode-test/src/main/java/org/springframework/data/gemfire/tests/util/ReflectionUtils.java b/spring-data-geode-test/src/main/java/org/springframework/data/gemfire/tests/util/ReflectionUtils.java new file mode 100644 index 0000000..7429f98 --- /dev/null +++ b/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 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; + } +}