Google pagination used to find initial and final index for the search done using google3 for website application.
GoogleAppSearch.java
PaginationUtil.java
PaginationVO.java
Search.java
GoogleAppSearch.java
Code: Java
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;
}
}
Code: Java
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;
}
}
Code: Java
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;
}
}
Code: Java
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);
}
}
