/**
* {@inheritDoc}
*/
protected Database readModel()
{
DatabaseIO reader = new DatabaseIO();
Database model = null;
reader.setValidateXml(_validateXml);
reader.setUseInternalDtd(_useInternalDtd);
if ((_singleSchemaFile != null) && !_fileSets.isEmpty())
{
throw new BuildException("Please use either the schemafile attribute or the sub fileset element, but not both");
}
if (_singleSchemaFile != null)