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/*
 * Copyright 2004-2008 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.binding.message;

import java.util.Locale;

import org.springframework.context.MessageSource;
import org.springframework.context.MessageSourceResolvable;
import org.springframework.core.style.ToStringCreator;

public class DefaultMessageResolver implements MessageResolver, MessageSourceResolvable {

	private Object source;

	private String[] codes;

	private Severity severity;

	private Object[] args;

	private String defaultText;

	public DefaultMessageResolver(Object source, String[] codes, Severity severity, Object[] args, String defaultText) {
		this.source = source;
		this.codes = codes;
		this.severity = severity;
		this.args = args;
		this.defaultText = defaultText;
	}

	public Message resolveMessage(MessageSource messageSource, Locale locale) {
		return new Message(source, postProcessMessageText(messageSource.getMessage(this, locale)), severity);
	}

	/**
	 * Subclasses may override to perform special post-processing of the returned message text; for example, running it
	 * through an Expression evaluator.
	 * @param text the resolved message text
	 * @return the post processeed message text
	 */
	protected String postProcessMessageText(String text) {
		return text;
	}

	// implementing MessageSourceResolver

	public String[] getCodes() {
		return codes;
	}

	public Object[] getArguments() {
		return args;
	}

	public String getDefaultMessage() {
		return defaultText;
	}

	public String toString() {
		return new ToStringCreator(this).append("source", source).append("severity", severity).append("codes", codes)
				.append("args", args).append("defaultText", defaultText).toString();
	}
}