
package persistence;

public class StringAttribute extends Attribute
{
	public StringAttribute()
	{
	}
	
	public StringAttribute(final AttributeMapping mapping)
	{
		super(mapping);
	}
	
}


package persistence;

public final class StringAttribute extends Attribute
{
	public StringAttribute()
	{
	}
	
	public StringAttribute(final AttributeMapping mapping)
	{
		super(mapping);
	}
	
}

make it final