+ client.disconnect();
+ } catch(IOException f) {
+ // do nothing
+ }
+ }
+ throw new ServletModuleFailure(e);
+ }
+ }
+ }
+
+
+
+
+ /**
+ * Method for querying a lucene index
+ *
+ * @param req
+ * @param res
+ * @throws ServletModuleExc
+ * @throws ServletModuleUserExc
+ * @throws ServletModuleFailure
+ */
+
+ public void search(HttpServletRequest req, HttpServletResponse res)
+ throws ServletModuleExc, ServletModuleUserExc, ServletModuleFailure {
+ try {
+ final String[] search_variables = { "search_content", "search_boolean", "search_creator",
+ "search_topic", "search_hasImages", "search_hasAudio", "search_hasVideo", "search_sort",
+ "search_submit", "search_back", "search_forward" };
+ HTTPRequestParser requestParser = new HTTPRequestParser(req);
+
+ int increment=10;
+
+ HttpSession session = req.getSession(false);
+
+ String queryString="";
+
+ Map mergeData = new HashMap();
+
+ KeywordSearchTerm dateTerm = new KeywordSearchTerm("date_formatted","search_date","webdb_create_formatted","webdb_create_formatted","webdb_create_formatted");
+ UnIndexedSearchTerm whereTerm = new UnIndexedSearchTerm("","","","where","where");
+ TextSearchTerm creatorTerm = new TextSearchTerm("creator","search_creator","creator","creator","creator");
+ TextSearchTerm titleTerm = new TextSearchTerm("title","search_content","title","title","title");
+ TextSearchTerm descriptionTerm = new TextSearchTerm("description","search_content","description","description","description");
+ ContentSearchTerm contentTerm = new ContentSearchTerm("content_data","search_content","content","","");
+ TopicSearchTerm topicTerm = new TopicSearchTerm();
+ ImagesSearchTerm imagesTerm = new ImagesSearchTerm();
+ AudioSearchTerm audioTerm = new AudioSearchTerm();
+ VideoSearchTerm videoTerm = new VideoSearchTerm();
+
+ //make the query available to subsequent iterations
+
+ Iterator j = Arrays.asList(search_variables).iterator();
+ while (j.hasNext()) {
+ String variable = (String) j.next();
+
+ mergeData.put(variable, requestParser.getParameter(variable));
+ }
+
+ try{
+ mergeData.put("topics", topicsModule.getTopicsAsSimpleList());
+ }
+ catch(Throwable e) {
+ logger.debug("Can't get topics: " + e.toString());
+ }
+
+ String searchBackValue = req.getParameter("search_back");
+ String searchForwardValue = req.getParameter("search_forward");
+
+ if (searchBackValue != null){
+ int totalHits = ((Integer) session.getAttribute("numberOfHits")).intValue();
+ int newPosition=((Integer)session.getAttribute("positionInResults")).intValue()-increment;
+ if (newPosition<0)
+ newPosition=0;
+ if (newPosition >= totalHits)
+ newPosition=totalHits-1;
+ session.setAttribute("positionInResults",new Integer(newPosition));
+ }
+ else {
+ if (searchForwardValue != null){
+ int totalHits = ((Integer) session.getAttribute("numberOfHits")).intValue();
+ int newPosition=((Integer)session.getAttribute("positionInResults")).intValue()+increment;
+ if (newPosition<0)
+ newPosition=0;
+ if (newPosition >= totalHits)
+ newPosition=totalHits-1;
+
+ session.setAttribute("positionInResults",new Integer(newPosition));
+ }
+ else {
+ String indexPath=configuration.getString("IndexPath");
+
+
+ String creatorFragment = creatorTerm.makeTerm(req);
+ if (creatorFragment != null){
+ queryString = queryString + " +" + creatorFragment;
+ }
+
+ // search title, description, and content for something
+ // the contentTerm uses param "search_boolean" to combine its terms
+ String contentFragment = contentTerm.makeTerm(req);
+ if (contentFragment != null){
+ logger.debug("contentFragment: " + contentFragment);
+ queryString = queryString + " +" + contentFragment;
+ }
+
+ String topicFragment = topicTerm.makeTerm(req);
+ if (topicFragment != null){
+ queryString = queryString + " +" + topicFragment;
+ }
+
+ String imagesFragment = imagesTerm.makeTerm(req);
+ if (imagesFragment != null){
+ queryString = queryString + " +" + imagesFragment;
+ }
+
+ String audioFragment = audioTerm.makeTerm(req);
+ if (audioFragment != null){
+ queryString = queryString + " +" + audioFragment;
+ }
+
+ String videoFragment = videoTerm.makeTerm(req);
+ if (videoFragment != null){
+ queryString = queryString + " +" + videoFragment;
+ }
+
+ if (queryString == null || queryString == ""){
+ queryString = "";
+ }
+ else{
+ try{
+ Searcher searcher = null;
+ try {
+ searcher = new IndexSearcher(indexPath);
+ }
+ catch(IOException e) {
+ logger.debug("Can't open indexPath: " + indexPath);
+ throw new ServletModuleExc("Problem with Search Index! : "+ e.toString());
+ }
+
+ Query query = null;
+ try {
+ query = QueryParser.parse(queryString, "content", new StandardAnalyzer());
+ }
+ catch(Exception e) {
+ searcher.close();
+ logger.debug("Query don't parse: " + queryString);
+ throw new ServletModuleExc("Problem with Query String! (was '"+queryString+"')");
+ }
+
+ Hits hits = null;
+ try {
+ hits = searcher.search(query);
+ }
+ catch(IOException e) {
+ searcher.close();
+ logger.debug("Can't get hits: " + e.toString());
+ throw new ServletModuleExc("Problem getting hits!");
+ }
+
+ int start = 0;
+ int end = hits.length();
+
+ String sortBy=req.getParameter("search_sort");
+ if (sortBy == null || sortBy.equals("")){
+ throw new ServletModuleExc("Please let me sort by something!(missing search_sort)");
+ }
+
+ // here is where the documents will go for storage across sessions
+ ArrayList theDocumentsSorted = new ArrayList();
+
+ if (sortBy.equals("score")){
+ for(int i = start; i < end; i++) {
+ theDocumentsSorted.add(hits.doc(i));
+ }
+ }
+ else{
+ // then we'll sort by date!
+ Map dateToPosition = new HashMap(end,1.0F); //we know how big it will be
+ for(int i = start; i < end; i++) {
+ String creationDate=(hits.doc(i)).get("creationDate");
+ // do a little dance in case two contents created at the same second!
+ if (dateToPosition.containsKey(creationDate)){
+ ((ArrayList) (dateToPosition.get(creationDate))).add(new Integer(i));
+ }
+ else{
+ ArrayList thePositions = new ArrayList();
+ thePositions.add(new Integer(i));
+ dateToPosition.put(creationDate,thePositions);
+ }
+ }
+ Set keys = dateToPosition.keySet();
+ ArrayList keyList= new ArrayList(keys);
+ Collections.sort(keyList);
+ if (sortBy.equals("date_desc")){
+ Collections.reverse(keyList);
+ }
+ else{
+ if (!sortBy.equals("date_asc")){
+ throw new ServletModuleExc("don't know how to sort by: "+ sortBy);
+ }
+ }
+ ListIterator keyTraverser = keyList.listIterator();
+ while (keyTraverser.hasNext()){
+ ArrayList positions = (ArrayList)dateToPosition.get((keyTraverser.next()));
+ ListIterator positionsTraverser=positions.listIterator();
+ while (positionsTraverser.hasNext()){
+ theDocumentsSorted.add(hits.doc(((Integer)(positionsTraverser.next())).intValue()));
+ }
+ }
+ }
+
+ try{
+ searcher.close();
+ }
+ catch (IOException e){
+ logger.debug("Can't close searcher: " + e.toString());
+ throw new ServletModuleFailure("Problem closing searcher(normal):" + e.getMessage(), e);
+ }
+
+
+ session.removeAttribute("numberOfHits");
+ session.removeAttribute("theDocumentsSorted");
+ session.removeAttribute("positionInResults");
+
+ session.setAttribute("numberOfHits",new Integer(end));
+ session.setAttribute("theDocumentsSorted",theDocumentsSorted);
+ session.setAttribute("positionInResults",new Integer(0));
+