/*
* Append the supplied (chain of) referrals onto the
* end of the current (chain of) referrals.
*/
@Override
public void appendUnprocessedReferrals(LdapReferralException ex) {
if (refEx != null) {
refEx = refEx.appendUnprocessedReferrals(ex);
} else {
refEx = ex.appendUnprocessedReferrals(refEx);
}
}
/*
* Retrieve the next set of entries and/or referrals.
*/
private void getNextBatch() throws NamingException {
res = homeCtx.getSearchReply(enumClnt, res);
if (res == null) {
limit = posn = 0;
return;
}
entries = res.entries;
limit = (entries == null) ? 0 : entries.size(); // handle empty set
posn = 0; // reset
// minimize the number of calls to processReturnCode()
// (expensive when batchSize is small and there are many results)
if ((res.status != LdapClient.LDAP_SUCCESS)
|| ((res.status == LdapClient.LDAP_SUCCESS) && (res.referrals != null))) {
try {
// convert referrals into a chain of LdapReferralException
homeCtx.processReturnCode(res, listArg);
} catch (LimitExceededException | PartialResultException e) {
setNamingException(e);
}
}
// merge any newly received referrals with any current referrals
if (res.refEx != null) {
if (refEx == null) {
refEx = res.refEx;
} else {
refEx = refEx.appendUnprocessedReferrals(res.refEx);
}
res.refEx = null; // reset
}
if (res.resControls != null) {
homeCtx.respCtls = res.resControls;
}
}
/*
* Iterate through the URLs of a referral. If successful then perform
* a search operation and merge the received results with the current
* results.
*/
protected final boolean hasMoreReferrals() throws NamingException {
if ((refEx != null) && (refEx.hasMoreReferrals() || refEx.hasMoreReferralExceptions())) {
if (homeCtx.handleReferrals == LdapClient.LDAP_REF_THROW) {
throw (NamingException) (refEx.fillInStackTrace());
}
// process the referrals sequentially
while (true) {
LdapReferralContext refCtx =
(LdapReferralContext) refEx.getReferralContext(homeCtx.envprops, homeCtx.reqCtls);
try {
update(getReferredResults(refCtx));
break;
} catch (LdapReferralException re) {
// record a previous exception
if (errEx == null) {
errEx = re.getNamingException();
}
refEx = re;
continue;
} finally {
// Make sure we close referral context
refCtx.close();
}
}
return hasMoreImpl();
} else {
cleanup();
if (errEx != null) {
throw errEx;
}
return (false);
}
}
