public DataSourceSupport() 
{

}

 public DataSourceSupport(DataSource dataSource) 
{
        this.dataSource = dataSource;
}

 protected DataSource createDataSource() throws IOException 
{
        // Setup the Derby datasource.
        System.setProperty("derby.system.home", getDataDirectoryFile().getCanonicalPath());
        System.setProperty("derby.storage.fileSyncTransactionLog", "true");
        System.setProperty("derby.storage.pageCacheSize", "100");
        final EmbeddedDataSource ds = new EmbeddedDataSource();
        ds.setDatabaseName("derbydb");
        ds.setCreateDatabase("create");
        return ds;
}

 public String getDataDirectory() 
{
        return dataDirectory;
}

 public File getDataDirectoryFile() 
{
        if (dataDirectoryFile == null) {
            dataDirectoryFile = new File(getDataDirectory());
        }
        return dataDirectoryFile;
}

 public DataSource getDataSource() throws IOException 
{
        if (dataSource == null) {
            dataSource = createDataSource();
            if (dataSource == null) {
                throw new IllegalArgumentException("No dataSource property has been configured");
            }
        }
        return dataSource;
}

 public  void setDataDirectory(String dataDirectory) 
{
        this.dataDirectory = dataDirectory;
}

 public  void setDataDirectoryFile(File dataDirectory) 
{
        this.dataDirectoryFile = dataDirectory;
}

 public  void setDataSource(DataSource dataSource) 
{
        this.dataSource = dataSource;
}

 public String toString() 
{
        return "" + dataSource;
}