ConfigPreProcessor.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you 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
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 * KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations
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 */
package org.apache.deltaspike.core.spi.config.view;

import java.lang.annotation.Annotation;

/**
 * Allows to change the found meta-data (e.g. replace default values - example:
 * Page.extension needs "" as a default for the meta-data-merging process, but "xhtml" should be the final default)
 * or the {@link ViewConfigNode} itself. E.g. to register callbacks supported by the meta-data
 * (see {@link org.apache.deltaspike.core.api.config.view.metadata.ViewMetaData#preProcessor()} )
 *
 * @param <T> meta-data type
 */
public interface ConfigPreProcessor<T extends Annotation>
{
    T beforeAddToConfig(T metaData, ViewConfigNode viewConfigNode);
}