* @param accessGroup String group to use with requests to the Oracle
* @param proxyHostPort String proxyHost:proxyPort to use for robots.txt
*/
public OracleExclusionFilter(String oracleUrl, String accessGroup,
String proxyHostPort) {
client = new AccessControlClient(oracleUrl);
if(proxyHostPort != null) {
int colonIdx = proxyHostPort.indexOf(':');
if(colonIdx > 0) {
String host = proxyHostPort.substring(0,colonIdx);
int port = Integer.valueOf(proxyHostPort.substring(colonIdx+1));