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==================== DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. Copyright 2008-2009 Sun Microsystems, Inc. All rights reserved. Copyright 2011-2013 Tirasa. All rights reserved. The contents of this file are subject to the terms of the Common Development and Distribution License("CDDL") (the "License"). You may not use this file except in compliance with the License. You can obtain a copy of the License at https://oss.oracle.com/licenses/CDDL See the License for the specific language governing permissions and limitations under the License. When distributing the Covered Code, include this CDDL Header Notice in each file and include the License file at https://oss.oracle.com/licenses/CDDL. If applicable, add the following below this CDDL Header, with the fields enclosed by brackets [] replaced by your own identifying information: "Portions Copyrighted [year] [name of copyright owner]" ====================
 
 package org.connid.bundles.ad.search;
 
 import static org.identityconnectors.common.StringUtil.isNotBlank;
 
 import java.util.List;
 
 
     private static final Log LOG =
             Log.getLog(ADVlvIndexSearchStrategy.class);
 
     private final String vlvIndexAttr;
 
     private final int blockSize;
 
     private int index;
 
     private int lastListSize;
 
     private byte[] cookie;
 
     static String searchControlsToString(SearchControls controls) {
         StringBuilder builder = new StringBuilder();
         builder.append("SearchControls: {returningAttributes=");
         String[] attrs = controls.getReturningAttributes();
         builder.append(attrs != null ? Arrays.asList(attrs) : "null");
         builder.append(", scope=");
         switch (controls.getSearchScope()) {
             case .:
                 builder.append("OBJECT");
                 break;
             case .:
                 builder.append("ONELEVEL");
                 break;
             case .:
                 builder.append("SUBTREE");
                 break;
         }
         builder.append('}');
         return builder.toString();
     }
 
     public ADVlvIndexSearchStrategy(String vlvSortAttrint blockSize) {
         super(vlvSortAttrblockSize);
         this. = isNotBlank(vlvSortAttr) ? vlvSortAttr : "uid";
         this. = blockSize;
     }
 
     @Override
     public void doSearch(final LdapContext initCtx,
             final List<StringbaseDNs,
             final String query,
             final SearchControls searchControls,
             final SearchResultsHandler handler)
             throws IOExceptionNamingException {
 
         if (.isOk()) {
             .ok("Searching in {0} with filter {1} and {2}",
                     baseDNsquerysearchControlsToString(searchControls));
         }
        Iterator<StringbaseDNIter = baseDNs.iterator();
        boolean proceed = true;
        LdapContext ctx = initCtx.newInstance(null);
        try {
            while (baseDNIter.hasNext() && proceed) {
                proceed = searchBaseDN(
                        ctxbaseDNIter.next(), querysearchControlshandler);
            }
        } finally {
            ctx.close();
        }
    }
    private boolean searchBaseDN(
            final LdapContext ctx,
            final String baseDN,
            final String query,
            final SearchControls searchControls,
            final SearchResultsHandler handler)
            throws IOExceptionNamingException {
        if (.isOk()) {
            .ok("Searching in {0}"baseDN);
        }
         = 1;
         = 0;
         = null;
        String lastResultName = null;
        for (;;) {
            SortControl sortControl =
                    new SortControl(.);
            int afterCount =  - 1;
            VirtualListViewControl vlvControl = new VirtualListViewControl(
                    , 0, afterCount.);
            vlvControl.setContextID();
            if (.isOk()) {
                .ok("New search: target = {0}, afterCount = {1}",
                        afterCount);
            }
            ctx.setRequestControls(new Control[]{sortControlvlvControl});
            // Need to process the response controls, which are available after
            // all results have been processed, before sending anything to the caller
            // (because processing the response controls might throw exceptions that
            // invalidate anything we might have sent otherwise).
            // So storing the results before actually sending them to the handler.
            List<SearchResultresultList =
                    new ArrayList<SearchResult>();
            NamingEnumeration<SearchResultresults =
                    ctx.search(baseDNquerysearchControls);
            try {
                // hasMore call for referral resolution ... it fails with AD
                // while (results.hasMore()) {
                while (results.hasMoreElements()) {
                    SearchResult result = results.next();
                    boolean overlap = false;
                    if (lastResultName != null) {
                        if (lastResultName.equals(result.getName())) {
                            .warn(
                                    "Working around rounding error overlap at "
                                    + "index " + );
                            overlap = true;
                        }
                        lastResultName = null;
                    }
                    if (!overlap) {
                        resultList.add(result);
                    }
                }
            } finally {
                results.close();
            }
            processResponseControls(ctx.getResponseControls());
            SearchResult result = null;
            Iterator<SearchResultresultIter = resultList.iterator();
            while (resultIter.hasNext()) {
                result = resultIter.next();
                ++;
                if (!handler.handle(baseDNresult)) {
                    return false;
                }
            }
            if (result != null) {
                lastResultName = result.getName();
            }
            if ( > ) {
                break;
            }
            // DSEE seems to only have a single VLV index (although it claims to support more).
            // It returns at the server content count the sum of sizes of all indexes,
            // but it only returns the entries in the base context we are asking for.
            // So, in this case, index will never reach lastListSize. To avoid an infinite loop,
            // ending search if we received no results in the last iteration.
            if (resultList.isEmpty()) {
                .warn("Ending search because received no results");
                break;
            }
        }
        return true;
    }
    private void processResponseControls(final Control[] controls)
            throws NamingException {
        if (controls != null) {
            for (Control control : controls) {
                if (control instanceof SortResponseControl) {
                    SortResponseControl sortControl =
                            (SortResponseControlcontrol;
                    if (!sortControl.isSorted()
                            || (sortControl.getResultCode() != 0)) {
                        throw sortControl.getException();
                    }
                }
                if (control instanceof VirtualListViewResponseControl) {
                    VirtualListViewResponseControl vlvControl =
                            (VirtualListViewResponseControlcontrol;
                    if (vlvControl.getResultCode() == 0) {
                         = vlvControl.getListSize();
                         = vlvControl.getContextID();
                        if (.isOk()) {
                            .ok("Response control: lastListSize = {0}",
                                    );
                        }
                    } else {
                        throw vlvControl.getException();
                    }
                }
            }
        }
    }
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