Java DBUnit AmbiguousTableNameException incorrectly thrown

Question

I'm experimenting with DBUnit (2.6.0) and I'm trying to export my full database (PostgreSQL). However the following exception is thrown:

Exception in thread "main" org.dbunit.database.AmbiguousTableNameException: FLYWAY_SCHEMA_HISTORY

This is correct behaviour since I have two tables in different schemas with the same name:

I then read that you can set a property Qualified Table Names (http://dbunit.sourceforge.net/properties.html#qualifiedtablenames) that will take into account the schema name. So my code now is the following:

public class DbUnitExportTool {

public static void main(String[] args) throws Exception {
    // database connection
    Class.forName("org.postgresql.Driver");

    Connection jdbcConnection = DriverManager.getConnection("jdbc:postgresql://localhost:5432/*******", "********", "********");
    IDatabaseConnection connection = new DatabaseConnection(jdbcConnection);
    connection.getConfig().setProperty(DatabaseConfig.FEATURE_QUALIFIED_TABLE_NAMES, true);

    exportDatabase(connection);
}

private static void exportDatabase(IDatabaseConnection connection) throws Exception {
    // full database export
    IDataSet fullDataSet = connection.createDataSet();
    FlatXmlDataSet.write(fullDataSet, new FileOutputStream("full.xml"));
}
}

The problem is that I still get the same error and I don't know why since it should be resolved by setting the qualified table names to true? Does anybody know what I'm doing wrong?

score 0 · Accepted Answer · answered Jul 05 '19 at 14:22

The problem was the JDBC driver has a faulty comparison in method: haveMinimumServerVersion(String ver) (link to bug). I solved this by using an exclusion in my maven dependencies:

<dependency>
    <groupId>org.dbunit</groupId>
    <artifactId>dbunit</artifactId>
    <version>2.6.0</version>
    <exclusions>
        <exclusion>
            <groupId>postgresql</groupId>
            <artifactId>postgresql</artifactId>
        </exclusion>
    </exclusions>
</dependency>

This solved my problem. I hope it can help somebody else.

Java DBUnit AmbiguousTableNameException incorrectly thrown

1 Answers1