ModelNormalizer.java

package org.apache.maven.model.normalization;

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 * Licensed to the Apache Software Foundation (ASF) under one
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 * distributed with this work for additional information
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 * 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,
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import org.apache.maven.model.Model;
import org.apache.maven.model.building.ModelBuildingRequest;
import org.apache.maven.model.building.ModelProblemCollector;

/**
 * Handles normalization of a model. In this context, normalization is the process of producing a canonical
 * representation for models that physically look different but are semantically equivalent.
 * 
 * @author Benjamin Bentmann
 */
public interface ModelNormalizer
{

    /**
     * Merges duplicate elements like multiple declarations of the same build plugin in the specified model.
     * 
     * @param model The model whose duplicate elements should be merged, must not be {@code null}.
     * @param request The model building request that holds further settings, must not be {@code null}.
     * @param problems The container used to collect problems that were encountered, must not be {@code null}.
     */
    void mergeDuplicates( Model model, ModelBuildingRequest request, ModelProblemCollector problems );

    /**
     * Sets default values in the specified model that for technical reasons cannot be set directly in the Modello
     * definition.
     * 
     * @param model The model in which to set the default values, must not be {@code null}.
     * @param request The model building request that holds further settings, must not be {@code null}.
     * @param problems The container used to collect problems that were encountered, must not be {@code null}.
     */
    void injectDefaultValues( Model model, ModelBuildingRequest request, ModelProblemCollector problems );

}