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/*
 * Copyright 2002-2017 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
 *
 *      https://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.context;

import org.springframework.lang.Nullable;

/**
 * Interface for objects that are suitable for message resolution in a
 * {@link MessageSource}.
 *
 * 

Spring's own validation error classes implement this interface. * * @author Juergen Hoeller * @see MessageSource#getMessage(MessageSourceResolvable, java.util.Locale) * @see org.springframework.validation.ObjectError * @see org.springframework.validation.FieldError */ @FunctionalInterface public interface MessageSourceResolvable { /** * Return the codes to be used to resolve this message, in the order that * they should get tried. The last code will therefore be the default one. * @return a String array of codes which are associated with this message */ @Nullable String[] getCodes(); /** * Return the array of arguments to be used to resolve this message. *

The default implementation simply returns {@code null}. * @return an array of objects to be used as parameters to replace * placeholders within the message text * @see java.text.MessageFormat */ @Nullable default Object[] getArguments() { return null; } /** * Return the default message to be used to resolve this message. *

The default implementation simply returns {@code null}. * Note that the default message may be identical to the primary * message code ({@link #getCodes()}), which effectively enforces * {@link org.springframework.context.support.AbstractMessageSource#setUseCodeAsDefaultMessage} * for this particular message. * @return the default message, or {@code null} if no default */ @Nullable default String getDefaultMessage() { return null; } }





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