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/*
 * Copyright 2002-2015 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.
 */

package org.springframework.ui;

import java.util.Collection;
import java.util.Map;

/**
 * Subclass of {@link ModelMap} that implements the {@link Model} interface.
 * Java 5 specific like the {@code Model} interface itself.
 *
 * This is an implementation class exposed to handler methods by Spring MVC, typically via
 * a declaration of the {@link org.springframework.ui.Model} interface. There is no need to
 * build it within user code; a plain {@link org.springframework.ui.ModelMap} or even a just
 * a regular {@link Map} with String keys will be good enough to return a user model.
 *
 * @author Juergen Hoeller
 * @since 2.5.1
 */
@SuppressWarnings("serial")
public class ExtendedModelMap extends ModelMap implements Model {

	@Override
	public ExtendedModelMap addAttribute(String attributeName, Object attributeValue) {
		super.addAttribute(attributeName, attributeValue);
		return this;
	}

	@Override
	public ExtendedModelMap addAttribute(Object attributeValue) {
		super.addAttribute(attributeValue);
		return this;
	}

	@Override
	public ExtendedModelMap addAllAttributes(Collection attributeValues) {
		super.addAllAttributes(attributeValues);
		return this;
	}

	@Override
	public ExtendedModelMap addAllAttributes(Map attributes) {
		super.addAllAttributes(attributes);
		return this;
	}

	@Override
	public ExtendedModelMap mergeAttributes(Map attributes) {
		super.mergeAttributes(attributes);
		return this;
	}

	@Override
	public Map asMap() {
		return this;
	}

}