Package org.jooq.example

Source Code of org.jooq.example.TransactionTest

/**
* Copyright (c) 2009-2013, Data Geekery GmbH (http://www.datageekery.com)
* All rights reserved.
*
* This work is dual-licensed
* - under the Apache Software License 2.0 (the "ASL")
* - under the jOOQ License and Maintenance Agreement (the "jOOQ License")
* =============================================================================
* You may choose which license applies to you:
*
* - If you're using this work with Open Source databases, you may choose
*   either ASL or jOOQ License.
* - If you're using this work with at least one commercial database, you must
*   choose jOOQ License
*
* For more information, please visit http://www.jooq.org/licenses
*
* Apache Software License 2.0:
* -----------------------------------------------------------------------------
* 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.
*
* jOOQ License and Maintenance Agreement:
* -----------------------------------------------------------------------------
* Data Geekery grants the Customer the non-exclusive, timely limited and
* non-transferable license to install and use the Software under the terms of
* the jOOQ License and Maintenance Agreement.
*
* This library is distributed with a LIMITED WARRANTY. See the jOOQ License
* and Maintenance Agreement for more details: http://www.jooq.org/licensing
*/
package org.jooq.example;

import static org.jooq.example.db.h2.Tables.BOOK;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;

import java.util.concurrent.atomic.AtomicBoolean;

import org.jooq.DSLContext;
import org.jooq.example.spring.BookService;
import org.jooq.example.spring.SpringTransactionProvider;

import org.junit.After;
import org.junit.Assert;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.dao.DataAccessException;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import org.springframework.test.context.transaction.TransactionConfiguration;
import org.springframework.transaction.TransactionStatus;
import org.springframework.transaction.support.DefaultTransactionDefinition;

/**
* @author Petri Kainulainen
* @author Lukas Eder
*
* @see <a
*      href="http://www.petrikainulainen.net/programming/jooq/using-jooq-with-spring-configuration/">http://www.petrikainulainen.net/programming/jooq/using-jooq-with-spring-configuration/</a>
*/
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = {"/jooq-spring.xml"})
@TransactionConfiguration(transactionManager="transactionManager")
public class TransactionTest {

    @Autowired DSLContext                   dsl;
    @Autowired DataSourceTransactionManager txMgr;
    @Autowired SpringTransactionProvider    txProvider;
    @Autowired BookService                  books;

    @After
    public void teardown() {

        // Delete all books that were created in any test
        dsl.delete(BOOK).where(BOOK.ID.gt(4)).execute();
    }

    @Test
    public void testExplicitTransactions() {
        boolean rollback = false;

        TransactionStatus tx = txMgr.getTransaction(new DefaultTransactionDefinition());
        try {

            // This is a "bug". The same book is created twice, resulting in a
            // constraint violation exception
            for (int i = 0; i < 2; i++)
                dsl.insertInto(BOOK)
                   .set(BOOK.ID, 5)
                   .set(BOOK.AUTHOR_ID, 1)
                   .set(BOOK.TITLE, "Book 5")
                   .execute();

            Assert.fail();
        }

        // Upon the constraint violation, we explicitly roll back the transaction.
        catch (DataAccessException e) {
            txMgr.rollback(tx);
            rollback = true;
        }

        assertEquals(4, dsl.fetchCount(BOOK));
        assertTrue(rollback);
    }

    @Test
    public void testDeclarativeTransactions() {
        boolean rollback = false;

        try {
            books.create(5, 1, "Book 5");
            Assert.fail();
        }
        catch (DataAccessException ignore) {
            rollback = true;
        }

        assertEquals(4, dsl.fetchCount(BOOK));
        assertTrue(rollback);
    }

    @Test
    public void testjOOQTransactionsSimple() {
        boolean rollback = false;

        try {
            dsl.transaction(c -> {

                // This is a "bug". The same book is created twice, resulting in a
                // constraint violation exception
                for (int i = 0; i < 2; i++)
                    dsl.insertInto(BOOK)
                       .set(BOOK.ID, 5)
                       .set(BOOK.AUTHOR_ID, 1)
                       .set(BOOK.TITLE, "Book 5")
                       .execute();

                Assert.fail();
            });
        }

        // Upon the constraint violation, the transaction must already have been rolled back
        catch (DataAccessException e) {
            rollback = true;
        }

        assertEquals(4, dsl.fetchCount(BOOK));
        assertTrue(rollback);
    }

    @Test
    public void testjOOQTransactionsNested() {
        AtomicBoolean rollback1 = new AtomicBoolean(false);
        AtomicBoolean rollback2 = new AtomicBoolean(false);

        try {

            // If using Spring transactions, we don't need the c1 reference
            dsl.transaction(c1 -> {

                // The first insertion will work
                dsl.insertInto(BOOK)
                   .set(BOOK.ID, 5)
                   .set(BOOK.AUTHOR_ID, 1)
                   .set(BOOK.TITLE, "Book 5")
                   .execute();

                assertEquals(5, dsl.fetchCount(BOOK));

                try {

                    // Nest transactions using Spring. This should create a savepoint, right here
                    // If using Spring transactions, we don't need the c2 reference
                    dsl.transaction(c2 -> {

                        // The second insertion shouldn't work
                        for (int i = 0; i < 2; i++)
                            dsl.insertInto(BOOK)
                               .set(BOOK.ID, 6)
                               .set(BOOK.AUTHOR_ID, 1)
                               .set(BOOK.TITLE, "Book 6")
                               .execute();

                        Assert.fail();
                    });
                }

                catch (DataAccessException e) {
                    rollback1.set(true);
                }

                // We should've rolled back to the savepoint
                assertEquals(5, dsl.fetchCount(BOOK));

                throw new org.jooq.exception.DataAccessException("Rollback");
            });
        }

        // Upon the constraint violation, the transaction must already have been rolled back
        catch (org.jooq.exception.DataAccessException e) {
            assertEquals("Rollback", e.getMessage());
            rollback2.set(true);
        }

        assertEquals(4, dsl.fetchCount(BOOK));
        assertTrue(rollback2.get());
        assertTrue(rollback2.get());
    }
}
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