NativeTypeVisitor.java

/**
 * Copyright (C) 2010 Michael Mosmann <michael@mosmann.de>
 *
 * 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 de.flapdoodle.mongoom.mapping.types;

import de.flapdoodle.mongoom.exceptions.MappingException;
import de.flapdoodle.mongoom.mapping.AbstractVisitor;
import de.flapdoodle.mongoom.mapping.ITransformation;
import de.flapdoodle.mongoom.mapping.ITypeInfo;
import de.flapdoodle.mongoom.mapping.ITypeVisitor;
import de.flapdoodle.mongoom.mapping.context.IMappingContext;
import de.flapdoodle.mongoom.mapping.context.IPropertyContext;


public class NativeTypeVisitor<T> extends AbstractVisitor implements ITypeVisitor<T,T> {

	private final Class<T> _type;

	public NativeTypeVisitor(Class<T> type) {
		_type = type;
	}

	@Override
	public ITransformation<T, T> transformation(IMappingContext mappingContext, IPropertyContext<?> propertyContext,
			ITypeInfo field) {
		if (_type.isAssignableFrom(field.getType())) return new NoopTransformation<T>((Class<T>) field.getType());
		throw new MappingException(field.getDeclaringClass(), "Type does not match: " + _type+"!="+field.getType());
	}
}