RE: Convert Hits to XML

[Digy]

First of all, collecting large results using "Hits" object is too slow since
it re-executes the search internally when you need more than 100 hits.
It is better to use the "HitCollector".

Second, Why don't you return an array of a custom object and let the
WebServer make the serialization for you.
Like;

[Serializable]
public class MyClass
{
        public string RecipeID;
        public string RecipeTitle;
        .....

}


[WebMethod]
Public MyClass[] GetMyClasses()
{
        MyClass[] myclasses = new MyClass[resultCount];
        for(int i=0 ; i<resultCount ; i++){
                myclasses[i] = new MyClass();
                myclasses[i].RecipeID = ....
                myclasses[i].RecipeTitle = ....
                .....
        }
        return myclasses;
}


DIGY

-----Original Message-----
From: Scott Remiger [mailto:[EMAIL PROTECTED] 
Sent: Wednesday, March 12, 2008 6:47 PM
To: lucene-net-user@incubator.apache.org
Subject: Convert Hits to XML

We are currently converting the hits to a dataset then onto an XML
document which seems inefficient

Can someone suggest a better way of doing this?

 

The web service will time out when we get to about 36 thousands hits we
want to get the web service wide open(not limit the number of records to
return);

 

Hits _oRecipeHits = _oLuceneIndexSearch.ExecuteSearch(_bqQuery,
INDEXPATH);

 

            DataTable _dtSearchResults = new DataTable();

            _dtSearchResults.Columns.Add("RecipeID", typeof(string));

            _dtSearchResults.Columns.Add("RecipeTitle", typeof(string));

            _dtSearchResults.Columns.Add("Ingredients", typeof(string));

            _dtSearchResults.Columns.Add("Course", typeof(string));

            _dtSearchResults.Columns.Add("Equipment", typeof(string));

            _dtSearchResults.Columns.Add("Holiday", typeof(string));

            _dtSearchResults.Columns.Add("CookTime", typeof(string));

            _dtSearchResults.Columns.Add("SkillLevel", typeof(string));

            _dtSearchResults.Columns.Add("RecipeRating",
typeof(string));

            _dtSearchResults.Columns.Add("IsPublic", typeof(bool));

            _dtSearchResults.Columns.Add("relevance", typeof(float));

 

if (_oRecipeHits.Length() > 0)

            {

                for (int iResultsCount = 0; iResultsCount <
_oRecipeHits.Length(); iResultsCount++)

                {

                    Document _dResultsDoc =
_oRecipeHits.Doc(iResultsCount);

 

                    DataRow _rRecipe = _dtSearchResults.NewRow();

                    _rRecipe["RecipeID"] = _dResultsDoc.Get("RecipeID");

                    _rRecipe["RecipeTitle"] =
_dResultsDoc.Get("RecipeTitle");

                    _rRecipe["RecipeDescription"] =
_dResultsDoc.Get("RecipeDescription");

                    _rRecipe["Ingredients"] =
_dResultsDoc.Get("Ingredients");

                    _rRecipe["Course"] = _dResultsDoc.Get("Course");

                    _rRecipe["Equipment"] =
_dResultsDoc.Get("Equipment");

                    _rRecipe["Holiday"] = _dResultsDoc.Get("Holiday");

                    _rRecipe["CookTime"] = _dResultsDoc.Get("CookTime");

                    _rRecipe["SkillLevel"] =
_dResultsDoc.Get("SkillLevel");

                    _rRecipe["Region"] = _dResultsDoc.Get("Region");

                    _rRecipe["RecipeRating"] =
_dResultsDoc.Get("RecipeRating");

                    _rRecipe["IsPublic"] =
LUCENE_BOOL_TRUE.Equals(_dResultsDoc.Get("IsPublic"));

                    _rRecipe["relevance"] =
_oRecipeHits.Score(iResultsCount);

 

                    _dtSearchResults.Rows.Add(_rRecipe);

                }

            }

 

Scott Remiger

888 Lumber Exchange Building

10 South Fifth Street

Minneapolis, MN 55402

O: 612.238.4951

F: 612.746.4237