/// <summary>
/// Initializes a new instance of the <see cref="IndexDocument"/> class.
/// </summary>
public IndexDocument()
{
this.luceneDoc = new Lucene29.Net.Documents.Document();
this.luceneDoc.SetBoost(StaticValues.DefaultBoost);
}
/// <summary>
/// Retrieves data from this index.
/// </summary>
/// <param name="topNResults">The number of results to return from this index</param>
/// <param name="buildFieldFiltersFromAllData">Specifies whether distinct values from all fields should be stored, even if all actual results are not returned from the index</param>
/// <param name="filterFieldNames">The field names to build filters from</param>
/// <returns>A <see cref="IndexLibrary.SearchResultDataSet"/> that contains all data from this index</returns>
/// <remarks>
/// filterFieldNames was added as a parameter to allow you to only pull data from specific fields into the filters,
/// this can significantly increase the performance and the total amount of time required by this method.
/// </remarks>
public virtual SearchResultDataSet ReadDocuments(int topNResults, bool buildFieldFiltersFromAllData, string[] filterFieldNames)
{
if (this.isDisposed)
{
throw new ObjectDisposedException("IndexReader", "You cannot call RetrieveIndex(int, string[], bool) from a disposed IndexReader");
}
if (topNResults == -1)
{
topNResults = this.TotalDocuments;
}
if (topNResults <= 0)
{
return(new SearchResultDataSet());
}
bool filterAll = (filterFieldNames == null || filterFieldNames.Length == 0);
SearchResultDataSet dataSet = new SearchResultDataSet();
int resultsToCollect = this.TotalDocuments;
if (OnBeginRead(new ReaderEventArgs(this.index.IndexDirectory.FullName, topNResults, buildFieldFiltersFromAllData, filterFieldNames)))
{
OnEndRead(new ReaderEventArgs(this.index.IndexDirectory.FullName, topNResults, buildFieldFiltersFromAllData, filterFieldNames));
LibraryAnalysis.Fire(new ReadInfo(this.index.IndexDirectory.FullName, resultsToCollect, this.TotalDocuments, buildFieldFiltersFromAllData, this.IsOptimized));
return(dataSet);
}
if (!buildFieldFiltersFromAllData && topNResults < this.TotalDocuments)
{
resultsToCollect = topNResults;
}
LibraryAnalysis.Fire(new ReadInfo(this.index.IndexDirectory.FullName, topNResults, this.TotalDocuments, buildFieldFiltersFromAllData, this.isDisposed));
for (int i = 0; i < resultsToCollect; i++)
{
bool pastWantedResults = (buildFieldFiltersFromAllData && i >= topNResults);
Lucene29.Net.Documents.Document document = this.luceneReader.Document(i);
System.Collections.IList fieldList = document.GetFields();
Dictionary <string, string> values = new Dictionary <string, string>();
int totalValues = 0;
int totalFields = fieldList.Count;
for (int j = 0; j < totalFields; j++)
{
if (fieldList[j] == null)
{
continue;
}
Lucene29.Net.Documents.Field field = fieldList[j] as Lucene29.Net.Documents.Field;
string name = field.Name();
string value = field.StringValue();
if (filterAll || filterFieldNames.Contains(name))
{
SearchResultFilter filter = null;
if (!dataSet.ContainsFilter(name))
{
filter = new SearchResultFilter(name);
dataSet.AddFilter(filter);
}
else
{
filter = dataSet.GetFilter(name);
}
if (!filter.ContainsKey(value))
{
filter.AddValue(new KeyValuePair <string, bool>(value, true));
}
}
if (values.ContainsKey(name))
{
int revision = 1;
while (values.ContainsKey(name + "(" + revision.ToString() + ")"))
{
revision++;
}
name += "(" + revision.ToString() + ")";
}
values.Add(name, value);
if (OnReadResultFound(new ReaderEventArgs(this.index.IndexDirectory.FullName, topNResults, buildFieldFiltersFromAllData, filterFieldNames)))
{
OnEndRead(new ReaderEventArgs(this.index.IndexDirectory.FullName, topNResults, buildFieldFiltersFromAllData, filterFieldNames));
LibraryAnalysis.Fire(new ReadInfo(this.index.IndexDirectory.FullName, resultsToCollect, this.TotalDocuments, buildFieldFiltersFromAllData, this.IsOptimized));
return(dataSet);
}
++totalValues;
}
if (totalValues > 0 && !pastWantedResults)
{
dataSet.AddSearchResult(new SearchResult(values, this.index.IndexDirectory.FullName, 1f));
}
}
OnEndRead(new ReaderEventArgs(this.index.IndexDirectory.FullName, topNResults, buildFieldFiltersFromAllData, filterFieldNames));
return(dataSet);
}
/// <summary>
/// Initializes a new instance of the <see cref="IndexDocument"/> class.
/// </summary>
public IndexDocument()
{
this.luceneDoc = new Lucene29.Net.Documents.Document();
this.luceneDoc.SetBoost(StaticValues.DefaultBoost);
}
