org.dbunit.dataset.NoSuchTableException: Did not find table 'xxx' in schema 'null'

Question

I know there have been discussions wrt to dbunit here. I have read most of them but I cant seem to find a solution to my problem.

I have set up hibernate and spring. I am doing TDD so I had to wire up a proper DAO testing framework before writing code. Dbunit came to mind and I got to setting it up. Here is ma testdataset.xml

    <?xml version='1.0' encoding='UTF-8'?>
    <dataset>
        <table name="status">
            <column>statusId</column>
            <column>status</column>
            <row>
                <value>0</value>
                <value>Available</value>
            </row>
        </table>
        <table name="user">
            <column>userId</column>
            <column>firstName</column>
            <column>lastName</column>
            <column>username</column>
            <column>password</column>
            <column>email</column>
            <row>
                <value>0</value>
                <value>system</value>
                <value>admin</value>
                <value>admin</value>
                <value>admin</value>
                <value>[email protected]</value>
            </row>
        </table>
        <table name="reservation">
            <column>reservationId</column>
            <column>userId</column>
            <column>reservationDate</column>
            <column>startDate</column>
            <column>endDate</column>
            <column>statusId</column>
            <row>
                <value>0</value>
                <value>0</value>
                <value>2011-02-20 12:46:00.0</value>
                <value>2011-03-01 12:00:00.0</value>
                <value>2011-04-01 12:00:00.0</value>
                <value>0</value>
            </row>
        </table>
    </dataset>

All seems well until i try to wire up some code using a base class that loads the dataset. Here is my code:

@Transactional
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = { "classpath:test-applicationContext.xml" })
@TransactionConfiguration(transactionManager = "transactionManager", defaultRollback = true)
public class BaseContextSensitiveTest {

    @BeforeClass
public static void setUpDatabase() throws Exception {
    URL file = getInitalDatasetURL();
    testDataset = createDataset(file);
}

   @Before
public void init() throws Exception {
    log.info("Initializing Data Set");
    connection = createDBUnitConnection();

    DatabaseOperation.CLEAN_INSERT.execute(connection, testDataset);
}

private static URL getInitalDatasetURL() throws FileNotFoundException {
    URL file = ClassLoader.getSystemResource(TEST_DATASET_LOCATION);
    if (file == null) {
        throw new FileNotFoundException("Unable to find '"
                + TEST_DATASET_LOCATION + "' in the classpath");
    }
    return file;
}

private static IDataSet createDataset(URL file) throws IOException,
        DataSetException {

    return new XmlDataSet(file.openStream());
}

private IDatabaseConnection createDBUnitConnection()
        throws DatabaseUnitException, SQLException {

    Connection connection = getConnection();
    IDatabaseConnection dbUnitConn = new DatabaseConnection(connection);

    // use the hsql datatypefactory so that boolean properties work
    // correctly
    DatabaseConfig config = dbUnitConn.getConfig();
    config.setProperty(DatabaseConfig.PROPERTY_DATATYPE_FACTORY,
            new HsqldbDataTypeFactory());

    return dbUnitConn;
}

As soon as it hits the DatabaseOperation.CLEAN_INSERT.execute(connection, testDataset); it throws the following exception:

org.dbunit.dataset.NoSuchTableException: Did not find table 'USER' in schema 'null'
at org.dbunit.database.DatabaseTableMetaData.<init>(DatabaseTableMetaData.java:142)
at org.dbunit.database.DatabaseDataSet.getTableMetaData(DatabaseDataSet.java:290)
at org.dbunit.operation.DeleteAllOperation.execute(DeleteAllOperation.java:109)
at org.dbunit.operation.CompositeOperation.execute(CompositeOperation.java:79)
at com.cottage.test.BaseContextSensitiveTest.init(BaseContextSensitiveTest.java:64)

I have all the hibernate mapping files in place and the database is already set up with no data. Funny thing (or annoying thing depending on how you look at it) is that if I change the order of the tables in the dataset, the missingtableexception complains of another table... either user, reservation or status.

Any suggestions on what I might be doing wrong?

Answer 1

I've also come across this same error and the accepted fix above did not fix my problems. However I was able to find the solution.

My setup consisted of DBUnit(2.4), EclipseLink(2.1) as my JPA provider, and Postgres as my backend database. Also, in my scenario I was not dropping and recreating the tables for each test run. My test data already existed. Bad practice I know, but it was more of a test/prototyping scenario. The code below illustrates the DBUnit configuration used to fix my problem.

54    // ctx represents a spring context
55    DataSource ds = (DataSource)ctx.getBean("myDatasourceBean");
56    Connection conn = DataSourceUtils.getConnection(ds);
57    IDatabaseConnection dbUnitConn = new DatabaseConnection(conn, "public");
58    DatabaseConfig dbCfg = dbUnitConn.getConfig();
59    dbCfg.setFeature(DatabaseConfig.FEATURE_CASE_SENSITIVE_TABLE_NAMES, Boolean.TRUE);
60    IDataSet dataSet = new FlatXmlDataSet(ClassLoader.getSYstemResourceAsStream("mydbunitdata.xml"));
61    DatabaseOperation.REFRESH.execute(dbUnitConn, dataSet);

Two things in the code above fixed my problem. First I needed to define the schema DBUnit should use. That is done on line 57 above. When the new DatabaseConnection is set, the schema("public") should be passed in if it is not null.

Secondly, I needed DBUnit to be case sensitive about the database table names. In my DBUnit xml file("mydbunitdata.xml") the table names are all lowercase like they are in the database. However, if you don't tell DBUnit to use case sensitive table names it looks for uppercase table names which Postgres didn't like. Therefore I needed to set the case sensitive feature in DBUnit which is done on line 59.