/*

* Copyright © 2012 The Feign Authors (feign@commonhaus.dev)

*

* 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

*

* http://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 feign.form.util;

import static java.lang.reflect.Modifier.isFinal;

import static java.lang.reflect.Modifier.isStatic;

import static lombok.AccessLevel.PRIVATE;

import feign.form.FormProperty;

import java.lang.reflect.Field;

import java.lang.reflect.Type;

import java.rmi.UnexpectedException;

import java.security.PrivilegedAction;

import java.util.HashMap;

import java.util.Map;

import lombok.NoArgsConstructor;

import lombok.NonNull;

import lombok.Setter;

import lombok.SneakyThrows;

import lombok.experimental.FieldDefaults;

import lombok.val;

/**

* An utility class to work with POJOs.

*

* @author Artem Labazin

*/

public final class PojoUtil {

public static boolean isUserPojo(@NonNull Object object) {

val type = object.getClass();

val packageName = type.getPackage().getName();

return !packageName.startsWith("java.");

}

public static boolean isUserPojo(@NonNull Type type) {

val typeName = type.toString();

return !typeName.startsWith("class java.");

}

@SneakyThrows

public static Map<String, Object> toMap(@NonNull Object object) {

val result = new HashMap<String, Object>();

val type = object.getClass();

for (val field : type.getDeclaredFields()) {

val modifiers = field.getModifiers();

if (isFinal(modifiers) || isStatic(modifiers)) {

continue;

}

field.setAccessible(true);

val fieldValue = field.get(object);

if (fieldValue == null) {

continue;

}

val propertyKey =

field.isAnnotationPresent(FormProperty.class)

? field.getAnnotation(FormProperty.class).value()

: field.getName();

result.put(propertyKey, fieldValue);

}

return result;

}

private PojoUtil() throws UnexpectedException {

throw new UnexpectedException("It is not allowed to instantiate this class");

}

@Setter

@NoArgsConstructor

@FieldDefaults(level = PRIVATE)

private static final class SetAccessibleAction implements PrivilegedAction<Object> {

Field field;

@Override

public Object run() {

field.setAccessible(true);

return null;

}

}

}