public long GetTotalDocumentsInIndex()
{
// okay, open reader or searcher and get max docs
DirectoryInfo searchDirectory = null;
bool hasIndexFiles = false;
switch (index.IndexStructure)
{
case IndexType.SingleIndex:
IIndex singleIndex = (IIndex)index;
searchDirectory = singleIndex.IndexDirectory;
hasIndexFiles = singleIndex.HasIndexFiles();
break;
case IndexType.DoubleIndex:
case IndexType.CyclicalIndex:
IDoubleIndex doubleIndex = (IDoubleIndex)index;
searchDirectory = doubleIndex.GetReadDirectory();
hasIndexFiles = doubleIndex.HasIndexFiles();
break;
default:
throw new NotImplementedException(index.IndexStructure.ToString() + " not supported");
}
if (!hasIndexFiles)
{
return(-1L);
}
Lucene29.Net.Store.Directory directory = null;
Lucene29.Net.Search.IndexSearcher searcher = null;
try {
directory = Lucene29.Net.Store.FSDirectory.Open(searchDirectory);
searcher = new Lucene29.Net.Search.IndexSearcher(directory, true);
return(searcher.MaxDoc());
}
catch {
return(-2L);
}
finally {
if (searcher != null)
{
searcher.Close();
}
if (directory != null)
{
directory.Close();
}
}
}
/// <summary>
/// Performs a search against an index.
/// </summary>
/// <param name="builder">The query to run against the index.</param>
/// <param name="totalResultsRequested">The total number of results to return.</param>
/// <returns>a list of <see cref="IndexLibrary.SearchResult"/>, one for each result found.</returns>
/// <remarks>
/// Designed to be used for the majority of searches. The functionality contained in this
/// method is used for a normal search, i.e. enter a term, search, get results.
/// </remarks>
public virtual IEnumerable <SearchResult> Search(QueryBuilder builder, int totalResultsRequested)
{
if (builder == null)
{
throw new ArgumentNullException("builder", "builder cannot be null");
}
List <SearchResult> results = new List <SearchResult>();
if (OnBeginSearch(new SearcherEventArgs(this.index.IndexDirectory.Name, this.index.IndexStructure, SearchMethodType.Normal, SearchMethodLocation.Beginning, null)))
{
OnEndSearch(new SearcherEventArgs(this.index.IndexDirectory.Name, this.index.IndexStructure, SearchMethodType.Normal, SearchMethodLocation.Ending, null));
LibraryAnalysis.Fire(new SearchInfo(this.index.IndexDirectory.Name, builder.ToString(), SearchMethodType.Normal, 0, true));
return(results);
}
this.index.Refresh();
DirectoryInfo searchDirectory = null;
bool hasIndexFiles = GetIndexReadDirectory(out searchDirectory);
if ((totalResultsRequested < -1 || totalResultsRequested == 0) || (!hasIndexFiles))
{
OnEndSearch(new SearcherEventArgs(this.index.IndexDirectory.Name, this.index.IndexStructure, SearchMethodType.Normal, SearchMethodLocation.Ending, null));
LibraryAnalysis.Fire(new SearchInfo(this.index.IndexDirectory.Name, builder.ToString(), SearchMethodType.Normal, 0, true));
return(results);
}
Lucene29.Net.Store.Directory directory = null;
Lucene29.Net.Search.IndexSearcher searcher = null;
int hitsLength = 0;
bool canceled = false;
try {
directory = Lucene29.Net.Store.FSDirectory.Open(searchDirectory);
searcher = new Lucene29.Net.Search.IndexSearcher(directory, true);
Lucene29.Net.Search.TopDocs topDocs = searcher.Search(builder.GetLuceneQuery, (totalResultsRequested == -1) ? StaticValues.DefaultDocsToReturn : totalResultsRequested);
hitsLength = (totalResultsRequested == -1) ? topDocs.totalHits : Math.Min(topDocs.totalHits, totalResultsRequested);
if (hitsLength > 5000)
{
hitsLength = 5000;
}
int resultsFound = 0;
for (int i = 0; i < hitsLength; i++)
{
int docID = topDocs.scoreDocs[i].doc;
Document document = searcher.Doc(docID);
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;
}
Field field = fieldList[j] as Field;
string name = field.Name();
int renameCount = 1;
while (values.ContainsKey(name))
{
name = field.Name() + "(" + renameCount.ToString() + ")";
renameCount++;
}
values.Add(name, field.StringValue());
++totalValues;
}
if (totalValues > 0)
{
SearchResult result = new SearchResult(values, this.index.IndexDirectory.Name, topDocs.scoreDocs[i].score);
results.Add(result);
resultsFound++;
if (OnSearchResultFound(new SearcherEventArgs(this.index.IndexDirectory.Name, this.index.IndexStructure, SearchMethodType.Normal, SearchMethodLocation.ResultFound, result)))
{
canceled = true;
break;
}
}
}
}
finally {
if (searcher != null)
{
searcher.Close();
}
if (directory != null)
{
directory.Close();
}
OnEndSearch(new SearcherEventArgs(this.index.IndexDirectory.Name, this.index.IndexStructure, SearchMethodType.Normal, SearchMethodLocation.Ending, null));
LibraryAnalysis.Fire(new SearchInfo(this.index.IndexDirectory.Name, builder.ToString(), SearchMethodType.Normal, hitsLength, canceled));
}
return(results);
}
/// <summary>
/// Performs a quick search against an index.
/// </summary>
/// <param name="builder">The query to run against the index.</param>
/// <param name="fieldName">Name of the field to return from the index.</param>
/// <param name="totalResultsRequested">The total number of results to return.</param>
/// <returns>A list of strings, one for each result found</returns>
/// <remarks>
/// Designed to be used for 'quick' type searches such as those used for type-ahead features or
/// searches where only a single column needs to be returned.
/// </remarks>
public IEnumerable <string> QuickSearch(QueryBuilder builder, string fieldName, int totalResultsRequested)
{
if (builder == null)
{
throw new ArgumentNullException("builder", "builder cannot be null");
}
List <string> results = new List <string>();
if (OnBeginSearch(new SearcherEventArgs(this.index.IndexDirectory.Name, this.index.IndexStructure, SearchMethodType.Quick, SearchMethodLocation.Beginning, null)))
{
OnEndSearch(new SearcherEventArgs(this.index.IndexDirectory.Name, this.index.IndexStructure, SearchMethodType.Quick, SearchMethodLocation.Ending, null));
LibraryAnalysis.Fire(new SearchInfo(this.index.IndexDirectory.Name, builder.ToString(), SearchMethodType.Quick, 0, true));
return(results);
}
this.index.Refresh();
DirectoryInfo searchDirectory = null;
bool hasIndexFiles = GetIndexReadDirectory(out searchDirectory);
if ((totalResultsRequested < -1 || totalResultsRequested == 0) || (!hasIndexFiles))
{
OnEndSearch(new SearcherEventArgs(this.index.IndexDirectory.Name, this.index.IndexStructure, SearchMethodType.Quick, SearchMethodLocation.Ending, null));
LibraryAnalysis.Fire(new SearchInfo(this.index.IndexDirectory.Name, builder.ToString(), SearchMethodType.Quick, 0, true));
return(results);
}
Lucene29.Net.Store.Directory directory = null;
Lucene29.Net.Search.IndexSearcher searcher = null;
int hitsLength = 0;
bool canceled = false;
try {
directory = Lucene29.Net.Store.FSDirectory.Open(searchDirectory);
searcher = new Lucene29.Net.Search.IndexSearcher(directory, true);
Lucene29.Net.Search.TopDocs topDocs = searcher.Search(builder.GetLuceneQuery, (totalResultsRequested == -1) ? StaticValues.DefaultDocsToReturn : totalResultsRequested);
hitsLength = (totalResultsRequested == -1) ? topDocs.totalHits : Math.Min(topDocs.totalHits, totalResultsRequested);
if (hitsLength > 5000)
{
hitsLength = 5000;
}
int resultsFound = 0;
for (int i = 0; i < hitsLength; i++)
{
int docID = topDocs.scoreDocs[i].doc;
Document document = searcher.Doc(docID);
System.Collections.IList fieldList = document.GetFields();
//Dictionary<string, string> values = new Dictionary<string, string>();
int totalFields = fieldList.Count;
Field collectedField = null;
for (int j = 0; j < totalFields; j++)
{
if (fieldList[j] == null)
{
continue;
}
collectedField = fieldList[j] as Field;
if (collectedField.Name().Equals(fieldName, StringComparison.CurrentCultureIgnoreCase))
{
break;
}
collectedField = null;
}
if (collectedField != null)
{
results.Add(collectedField.StringValue());
resultsFound++;
if (OnSearchResultFound(new SearcherEventArgs(this.index.IndexDirectory.Name, this.index.IndexStructure, SearchMethodType.Quick, SearchMethodLocation.ResultFound, collectedField.Name(), collectedField.StringValue(), topDocs.scoreDocs[i].score)))
{
canceled = true;
break;
}
}
}
}
finally {
if (searcher != null)
{
searcher.Close();
}
if (directory != null)
{
directory.Close();
}
OnEndSearch(new SearcherEventArgs(this.index.IndexDirectory.Name, this.index.IndexStructure, SearchMethodType.Quick, SearchMethodLocation.Ending, null));
LibraryAnalysis.Fire(new SearchInfo(this.index.IndexDirectory.Name, builder.ToString(), SearchMethodType.Quick, hitsLength, canceled));
}
return(results);
}
