net.projectmonkey.object.mapper.analysis.resolver.FieldBasedPropertyResolver Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of object-mapper Show documentation

Object mapping implementation written as an alternative to modelmapper which is able to support inheritance, handles flattening / expanding in a precise way, and is extensible / configurable

The newest version!

package net.projectmonkey.object.mapper.analysis.resolver;

import net.projectmonkey.object.mapper.analysis.result.PropertyPath;
import net.projectmonkey.object.mapper.analysis.result.PropertyPathElement;
import net.projectmonkey.object.mapper.context.ExecutionContext;
import net.projectmonkey.object.mapper.util.Types;
import net.projectmonkey.object.mapper.analysis.result.FieldBasedPropertyPathElement;
import net.projectmonkey.object.mapper.util.ReflectionUtil;

import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
import java.util.ArrayList;
import java.util.List;

/*
 *
 *  * Copyright 2012 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
 *  *
 *  *      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.
 *
 */

/**
 * @author Andy Moody
 */
public final class FieldBasedPropertyResolver implements PropertyResolver
{

	public static final FieldBasedPropertyResolver INSTANCE = new FieldBasedPropertyResolver();

	private FieldBasedPropertyResolver(){}

	@Override
	public List resolvePropertyPaths(Class clazz)
	{
		return getPropertyPaths(clazz, null);
	}

	private List getPropertyPaths(final Class clazz, final PropertyPath parent)
	{
		List propertyPaths = ExecutionContext.getPaths(clazz);
		if(propertyPaths == null)
		{
			propertyPaths = new ArrayList();
			ExecutionContext.registerPaths(clazz, propertyPaths); //register as soon as we create the paths list.
			if(!Types.isKnownType(clazz))
			{
				Field[] declaredFields = ReflectionUtil.getAllFields(clazz);

				for(Field declaredField : declaredFields)
				{
					if(!Modifier.isStatic(declaredField.getModifiers()))
					{
						PropertyPath path = resolvePath(clazz, parent, declaredField);
						propertyPaths.add(path);
					}
				}
			}
		}
		return propertyPaths;
	}

	private PropertyPath resolvePath(final Class clazz, final PropertyPath parent, final Field field)
	{
		PropertyPathElement property = new FieldBasedPropertyPathElement(clazz, field);

		Class fieldType = property.getType();
		PropertyPath toReturn = new PropertyPath(parent, property);
		List children = getPropertyPaths(fieldType, toReturn);
		toReturn.setChildren(children);
		return toReturn;
	}

}