Google pagination used to find initial and final index for the search done using google3 for website application. GoogleAppSearch.java Code: import net.sf.gsaapi.GSAClient; import net.sf.gsaapi.GSAQuery; import net.sf.gsaapi.GSAResponse; import net.sf.gsaapi.GSAQuery.GSAQueryTerm; import net.sf.gsaapi.constants.Filter; import net.sf.gsaapi.constants.OutputFormat; /* public class GoogleAppSearch { // target GSA's hostname private static final String HOSTNAME = "google3"; // The value for the frontend configured for the GSA private static final String SETTING_FRONTEND = "default_frontend"; private static final String LANG1 = "lang_"; private static GSAClient client = new GSAClient(HOSTNAME); private GSAQuery query = new GSAQuery(); // TODO have to change from default to fido when google3 is ready for fido private String siteCollection[] = { "default_collection" }; /** * default constructor * */ public GoogleAppSearch() { } /** * This method calls the google3 search thru API and returns the Response Object * @param search * @param language * @return GSAResponse */ public GSAResponse searchFromGoogleApps(String search, String language, int index) { String searchStr = getFormattedString(search); GSAResponse response = null; GSAQueryTerm term = new GSAQueryTerm(searchStr); query.setSiteCollections(siteCollection); query.setQueryTerm(term); query.setInputEncoding("UTF-8"); query.setLanguage(LANG1 + language);// lang_en,lang_fr query.setFilter(Filter.DUPLICATE_SNIPPET_FILTER); query.setFrontend(SETTING_FRONTEND); // required! query.setOutputFormat(OutputFormat.XML_NO_DTD); System.out.println("google query :"+query.getValue()); query.setScrollAhead(index); try { response = client.getGSAResponse(query); } catch (Exception e) { System.out.println(" Exception while in google appliance search: " + e.getMessage()); } return response; } /** * This method adds the escape characters to the search string for exact * match * * @param search * @return string */ private String getFormattedString(String search) { //search = search.trim(); search = search!=null?search.trim():""; search = "\\" + search + "\\"; return search; } } PaginationUtil.java Code: public class PaginationUtil { /** * This method populates final and intila index for the pagination * @param pages * @param endIndex * @param currentPage * @return */ public PaginationVO getSearchIndex(int pages,long endIndex,int currentPage) { PaginationVO paginatinVO=new PaginationVO(); int noOfPages=pages; long endInd =endIndex; int currentInd=currentPage; System.out.println(" end index "+endInd); System.out.println(" current index "+currentInd); System.out.println(" noOfPages "+noOfPages); int initalIndex=0; int finalIndex=0; //assign initial page index as 1 and final page index as no. of pages if(noOfPages <=10) { initalIndex=1; finalIndex=noOfPages; }else { //endInd is the one we will get from google API by calling getEndIndex() if(endInd%10 !=0) { //System.out.println("got the end index "+endInd); finalIndex=((int)(endInd/10))+1; if (finalIndex>20){ initalIndex=finalIndex-19; } }else{ finalIndex=currentInd+9; if(finalIndex >noOfPages) { finalIndex=noOfPages; } System.out.println("add the final index logic "+finalIndex); } if(currentInd<12 || finalIndex<20) { // System.out.println("sets initalIndex ==1"); initalIndex=1; } else { System.out.println("sets initalIndex ==1"); initalIndex=currentInd-10; } } paginatinVO.setInitialIndex(initalIndex); paginatinVO .setFinallIndex(finalIndex); return paginatinVO; } /** * Used for Testing * @param args */ public static void main(String args[]) { int noOfResults =Integer.parseInt(args[0]); int currentPage =Integer.parseInt(args[1]); long endIndex =Long.parseLong(args[2]); PaginationUtil util=new PaginationUtil(); PaginationVO paginatinVO=new PaginationVO(); paginatinVO= util.getSearchIndex(noOfResults,endIndex,currentPage); System.out.println("init index "+paginatinVO.getInitialIndex()); System.out.println("final index "+paginatinVO.getFinalIndex()); //for next int nextPage=currentPage+1; paginatinVO= util.getSearchIndex(noOfResults,endIndex,nextPage); System.out.println("init index "+paginatinVO.getInitialIndex()); System.out.println("final index "+paginatinVO.getFinalIndex()); //for prev int prevPage=currentPage-1; paginatinVO= util.getSearchIndex(noOfResults,endIndex,prevPage); System.out.println("init index "+paginatinVO.getInitialIndex()); System.out.println("final index "+paginatinVO.getFinalIndex()); } } public class PaginationVO { int initialIndex; int finalIndex; /** * Sets the intial index * @param initialIndex */ public void setInitialIndex(int initialIndex) { this.initialIndex=initialIndex; } /** * gives the final index * @return int */ public int getInitialIndex() { return initialIndex; } /** * sets final index * @param finalIndex */ public void setFinallIndex(int finalIndex) { this.finalIndex=finalIndex; } /** * Gives final index * @return int */ public int getFinalIndex() { return finalIndex; } } PaginationVO.java Code: package com.fido.portal.search; /** * @Description :This class is value object for Pagination * */ public class PaginationVO { int initialIndex; int finalIndex; /** * Sets the intial index * @param initialIndex */ public void setInitialIndex(int initialIndex) { this.initialIndex=initialIndex; } /** * gives the final index * @return int */ public int getInitialIndex() { return initialIndex; } /** * sets final index * @param finalIndex */ public void setFinallIndex(int finalIndex) { this.finalIndex=finalIndex; } /** * Gives final index * @return int */ public int getFinalIndex() { return finalIndex; } } Search.java Code: public class Search { public void begin() { String initialIndexStr = null; String maxIndexStr = null; String currentIndexStr = null; String numPages = null; String resultSizeStr = null; searchText = "tcs"; String language = "en"; GoogleAppSearch appsearch = new GoogleAppSearch(); GSAResponse resp = appsearch.searchFromGoogleApps(searchText, language, searchIndex); long endIndex = resp.getEndIndex(); long resultSize = resp.getNumResults(); pages = resultSize/10; if (resultSize%10 >0) pages = pages+1; if (endIndex%10 !=0){ pages= currentIndex+1; } PaginationUtil util=new PaginationUtil(); paginatinVO= util.getSearchIndex((int)pages,(int)endIndex,currentIndex); } }
There are 4 different java files, I have posted all 4 code diff. I dnt knw hw they got combine. Below are 4 diff. Java files. GoogleAppSearch.java PaginationUtil.java PaginationVO.java Search.java
our requirement was that, we will do internal search of our web applicaition and show the results. i uploaded pagniation logic code component, basically, the search also powered by google. The program which i uploaded will give the logic to get first , prev next values, which helps to show it in the search page.
