How to get Google Indexed Pages Count, and/or do Google searches through AJAX/programmatically

Hi,
Recently i had to get the count of the Pages Google has Indexed for a perticular web Site progmatically.
In the process i found that Google offers an AJAX Search API to perform Google Searches.
.
Hence i Implemented a Class which does the same for me easily(Ajax Search in Google).
And this Solution Does Google Searches programmatically and Also Give us the Indexed Pages Count.
Note: Its Groovy Implementation, Similar can be done in JavaScript using Ajax though intent will remain the same.
The class has been named GoogleAjaxSearch because it uses the Google AJAX Search API 😉

Use Cases Are As Follows:
[java]
//Case 1 Simple Search
String searchQuery = "my search Query"
GoogleAjaxSearch googleAjaxSearch = new GoogleAjaxSearch(searchQuery)
println googleAjaxSearch.results //Type List<Expando>, Just print it to see available properties
[/java]

[java]
//Case 2: Get Number Of Indexed Pages in Google
String searchQuery = "site:intelligrape.com"
GoogleAjaxSearch googleAjaxSearch = new GoogleAjaxSearch(searchQuery)
println googleAjaxSearch.estimatedResultCount
[/java]

[java]
//Case 3: Redo a search with same SearchQuery or a different Search Query
String searchQuery = "search string"
GoogleAjaxSearch googleAjaxSearch = new GoogleAjaxSearch(searchQuery)
googleAjaxSearch.redo() //Re-Search with same query
googleAjaxSearch.redo("New Query") // Re-Search With New Query
[/java]

[java]
//Case 4: All Details Available
String searchQuery = "site:intelligrape.com"
GoogleAjaxSearch googleAjaxSearch = new GoogleAjaxSearch(searchQuery)
println googleAjaxSearch.estimatedResultCount //Gives the result count, indexed pages count
println googleAjaxSearch.currentPageIndex //Search result server side pagination – current page
println googleAjaxSearch.results //List<Expando> containing results
println googleAjaxSearch.responseStatus //HTTP Status Code
println googleAjaxSearch.responseDetails //Details for response, if any
println googleAjaxSearch.searchQuery //Search Query
println googleAjaxSearch.moreResultsUrl // Url to hit for next Page of results
println googleAjaxSearch.jsonResult // Complete raw JSON Result from google
println googleAjaxSearch.pages // Pagination Pages Details
[/java]

The Class Code Is As Follows:

[java]
package myPackage.googleSearch

import grails.converters.JSON

class GoogleAjaxSearch {

public String searchQuery
public String responseDetails
public String moreResultsUrl
public String jsonResult

public Integer responseStatus
public Integer currentPageIndex
public Integer estimatedResultCount

public def pages

public List<Expando> results = []

private static final String ajaxSearchTarget = "http://ajax.googleapis.com/ajax/services/search/web?v=1.0&q=###SEARCHQUERY###&filter=0"

public GoogleAjaxSearch(String searchQuery) {
this.searchQuery = searchQuery
search()
}

public GoogleAjaxSearch() {
this(null)
}

public void redo() {
search()
}

public void redo(String newSearchQuery) {
this.searchQuery = newSearchQuery
search()
}

private void search() {
if (searchQuery) {
URL url = new URL(ajaxSearchTarget.replace(‘###SEARCHQUERY###’, searchQuery))
URLConnection connection = url.openConnection()
connection.setDoInput(true)
InputStream inStream = connection.getInputStream()
BufferedReader searchResultContent = new BufferedReader(new InputStreamReader(inStream))
jsonResult = searchResultContent.getText()
parseJsonAndPopulateObject()
}
}

private void parseJsonAndPopulateObject() {
def jsonArray = JSON.parse(jsonResult)
this.responseStatus = Integer.parseInt(jsonArray.responseStatus as String, 10)
this.responseDetails = jsonArray.responseDetails
this.moreResultsUrl = jsonArray.responseData.cursor.moreResultsUrl
this.currentPageIndex = Integer.parseInt(jsonArray.responseData.cursor.currentPageIndex as String, 10)
this.pages = jsonArray.responseData.cursor.pages
this.estimatedResultCount = Integer.parseInt(jsonArray.responseData.cursor.estimatedResultCount as String, 10)
results = jsonArray.responseData.results.collect {
new Expando(
content: it.content,
GsearchResultClass: it.GsearchResultClass,
titleNoFormatting: it.titleNoFormatting,
title: it.title,
cacheUrl: it.cacheUrl,
unescapedUrl: it.unescapedUrl,
url: it.url,
visibleUrl: it.visibleUrl
)
}
}
}

[/java]

Hope That Helps 🙂
Regards
Kushal Likhi