/*
* 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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* limitations under the License.
*
* Other licenses:
* -----------------------------------------------------------------------------
* Commercial licenses for this work are available. These replace the above
* ASL 2.0 and offer limited warranties, support, maintenance, and commercial
* database integrations.
*
* For more information, please visit: http://www.jooq.org/licenses
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package org.jooq.academy.section2;
import static org.jooq.academy.tools.Tools.connection;
import static org.jooq.example.db.h2.Tables.BOOK;
import java.sql.Connection;
import java.sql.SQLException;
import org.jooq.DSLContext;
import org.jooq.academy.tools.Tools;
import org.jooq.conf.Settings;
import org.jooq.example.db.h2.tables.records.BookRecord;
import org.jooq.exception.DataChangedException;
import org.jooq.impl.DSL;
import org.junit.Test;
public class Example_2_2_OptimisticLocking {
@Test
public void run() throws SQLException {
Connection connection = connection();
DSLContext dsl = DSL.using(connection, new Settings().withExecuteWithOptimisticLocking(true));
try {
Tools.title("Applying optimistic locking");
BookRecord book1 = dsl.selectFrom(BOOK).where(BOOK.ID.eq(1)).fetchOne();
BookRecord book2 = dsl.selectFrom(BOOK).where(BOOK.ID.eq(1)).fetchOne();
book1.setTitle("New Title");
book1.store();
book2.setTitle("Another Title");
book2.store();
}
catch (DataChangedException expected) {
expected.printStackTrace();
}
// Don't store the changes
finally {
connection.rollback();
}
}
}