* Factory method to create the <code>TextExtractor</code> instance.
*
* @return the <code>TextExtractor</code> instance this index should use.
*/
protected TextExtractor createTextExtractor() {
TextExtractor txtExtr = new JackrabbitTextExtractor(textFilterClasses);
if (extractorPoolSize > 0) {
// wrap with pool
txtExtr = new PooledTextExtractor(txtExtr, extractorPoolSize,
extractorBackLog, extractorTimeout);
}