MultiDatabaseBuilder.java

/*
 * 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 de.softwareforge.testing.postgres.junit5;

import de.softwareforge.testing.postgres.embedded.DatabaseManager;
import de.softwareforge.testing.postgres.embedded.EmbeddedPostgres;
import de.softwareforge.testing.postgres.embedded.EmbeddedPostgresPreparer;

import javax.sql.DataSource;

import edu.umd.cs.findbugs.annotations.NonNull;

/**
 * Create a new PostgreSQL server that supports multiple databases. Each database is cloned from a template.
 */
public final class MultiDatabaseBuilder {

    private MultiDatabaseBuilder() {
        throw new AssertionError("MultiDatabaseBuilder can not be instantiated");
    }

    /**
     * Create a builder without any customizations applied.
     *
     * @return A {@link DatabaseManager.Builder<EmbeddedPgExtension>} instance that can be customized further.
     */
    @NonNull
    public static DatabaseManager.Builder<EmbeddedPgExtension> instance() {
        return EmbeddedPgExtension.multiDatabase();
    }

    /**
     * Create a builder with standard initializations ({@link EmbeddedPostgres.Builder#withDefaults()}) applied.
     *
     * @return A {@link DatabaseManager.Builder<EmbeddedPgExtension>} instance that can be customized further.
     */
    @NonNull
    public static DatabaseManager.Builder<EmbeddedPgExtension> instanceWithDefaults() {
        return EmbeddedPgExtension.multiDatabase().withInstancePreparer(EmbeddedPostgres.Builder::withDefaults);
    }

    /**
     * Create a builder and register a {@link EmbeddedPostgresPreparer<DataSource>} to set up the template database.
     *
     * @param databasePreparer A {@link EmbeddedPostgresPreparer<DataSource>} instance. Must not be null.
     * @return A {@link DatabaseManager.Builder<EmbeddedPgExtension>} instance that can be customized further.
     * @since 3.0
     */
    @NonNull
    public static DatabaseManager.Builder<EmbeddedPgExtension> preparedInstance(@NonNull EmbeddedPostgresPreparer<DataSource> databasePreparer) {
        return EmbeddedPgExtension.multiDatabase().withDatabasePreparer(databasePreparer);
    }

    /**
     * Create a builder with standard initializations ({@link EmbeddedPostgres.Builder#withDefaults()}) applied and register a {@link
     * EmbeddedPostgresPreparer<DataSource>} to set up the template database.
     *
     * @param databasePreparer A {@link EmbeddedPostgresPreparer<DataSource>} instance. Must not be null.
     * @return A {@link DatabaseManager.Builder<EmbeddedPgExtension>} instance that can be customized further.
     * @since 3.0
     */
    @NonNull
    public static DatabaseManager.Builder<EmbeddedPgExtension> preparedInstanceWithDefaults(@NonNull EmbeddedPostgresPreparer<DataSource> databasePreparer) {
        return EmbeddedPgExtension.multiDatabase().withDatabasePreparer(databasePreparer).withInstancePreparer(EmbeddedPostgres.Builder::withDefaults);
    }
}