/*
 * 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
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 *  https://www.apache.org/licenses/LICENSE-2.0
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 *
 * Other licenses:
 * -----------------------------------------------------------------------------
 * Commercial licenses for this work are available. These replace the above
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 * database integrations.
 *
 * For more information, please visit: https://www.jooq.org/legal/licensing
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package org.jooq;

import java.util.EventListener;

import org.jetbrains.annotations.ApiStatus.Experimental;

/**
 * A listener for {@link Migration} lifecycles.
 * <p>
 * This is EXPERIMENTAL functionality and subject to change in future jOOQ
 * versions.
 *
 * @author Lukas Eder
 */
@Experimental
public interface MigrationListener extends EventListener {

    /**
     * Invoked at the start of a {@link Migration}.
     *
     * @param ctx The context containing information about the migration.
     */
    default void migrationStart(MigrationContext ctx) {}

    /**
     * Invoked at the end of a {@link Migration}.
     *
     * @param ctx The context containing information about the migration.
     */
    default void migrationEnd(MigrationContext ctx) {}

    /**
     * Invoked at the start of a set of {@link Queries} that describe a single
     * version increment.
     *
     * @param ctx The context containing information about the migration.
     */
    default void queriesStart(MigrationContext ctx) {}

    /**
     * Invoked at the end of a set of {@link Queries} that describe a single
     * version increment.
     *
     * @param ctx The context containing information about the migration.
     */
    default void queriesEnd(MigrationContext ctx) {}

    /**
     * Invoked at the start of an individual {@link Query}.
     *
     * @param ctx The context containing information about the migration.
     */
    default void queryStart(MigrationContext ctx) {}

    /**
     * Invoked at the start of an individual {@link Query}.
     *
     * @param ctx The context containing information about the migration.
     */
    default void queryEnd(MigrationContext ctx) {}
}
