/*
 * Copyright 2005-2014 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.ws.context;

import java.util.HashMap;
import java.util.Map;

import org.springframework.util.StringUtils;

/**
 * Abstract base class for {@link MessageContext} instances.
 *
 * @author Arjen Poutsma
 * @since 1.0.0
 */
public abstract class AbstractMessageContext implements MessageContext {

	/**
	 * Keys are {@code Strings}, values are {@code Objects}. Lazily initialized by
	 * {@code getProperties()}.
	 */
	private Map<String, Object> properties;

	@Override
	public boolean containsProperty(String name) {
		return getProperties().containsKey(name);
	}

	@Override
	public Object getProperty(String name) {
		return getProperties().get(name);
	}

	@Override
	public String[] getPropertyNames() {
		return StringUtils.toStringArray(getProperties().keySet());
	}

	@Override
	public void removeProperty(String name) {
		getProperties().remove(name);
	}

	@Override
	public void setProperty(String name, Object value) {
		getProperties().put(name, value);
	}

	private Map<String, Object> getProperties() {
		if (properties == null) {
			properties = new HashMap<String, Object>();
		}
		return properties;
	}
}