/// <summary>
/// Generates a merged BrowseResult from the supplied <see cref="T:BrowseRequest"/>.
/// The results are put into a Lucene.Net <see cref="T:Lucene.Net.Search.Collector"/> and a <see cref="T:System.Collections.Generic.IDictionary{System.String, IFacetAccessible}"/>.
/// </summary>
/// <param name="req"><see cref="T:BrowseRequest"/> for generating the facets.</param>
/// <param name="hitCollector">A <see cref="T:Lucene.Net.Search.Collector"/> for the hits generated during a search.</param>
/// <param name="facetMap">A dictionary of all of the facet collections (output).</param>
/// <param name="start">The offset value for the document number.</param>
public virtual void Browse(
BrowseRequest req,
ICollector hitCollector,
IDictionary <string, IFacetAccessible> facetMap,
int start)
{
// index empty
if (m_subBrowsers == null || m_subBrowsers.Length == 0)
{
return;
}
try
{
var q = req.Query;
MatchAllDocsQuery matchAllDocsQuery = new MatchAllDocsQuery();
if (q == null)
{
q = matchAllDocsQuery;
}
else if (!(q is MatchAllDocsQuery))
{
//MatchAllQuery is needed to filter out the deleted docids, that reside in ZoieSegmentReader and are not visible on Bobo level
matchAllDocsQuery.Boost = 0f;
q = QueriesSupport.CombineAnd(matchAllDocsQuery, q);
}
req.Query = q;
}
catch (Exception ioe)
{
throw new BrowseException(ioe.Message, ioe);
}
var mergedMap = new Dictionary <string, IList <IFacetAccessible> >();
try
{
var facetColMap = new Dictionary <string, IFacetAccessible>();
for (int i = 0; i < m_subBrowsers.Length; i++)
{
try
{
m_subBrowsers[i].Browse(req, hitCollector, facetColMap, (start + ReaderBase(i)));
}
finally
{
foreach (var entry in facetColMap)
{
string name = entry.Key;
IFacetAccessible facetAccessor = entry.Value;
var list = mergedMap.Get(name);
if (list == null)
{
list = new List <IFacetAccessible>(m_subBrowsers.Length);
mergedMap.Put(name, list);
}
list.Add(facetAccessor);
}
facetColMap.Clear();
}
}
}
finally
{
if (req.MapReduceWrapper != null)
{
req.MapReduceWrapper.FinalizePartition();
}
foreach (var entry in mergedMap)
{
string name = entry.Key;
IFacetHandler handler = GetFacetHandler(name);
try
{
IList <IFacetAccessible> subList = entry.Value;
if (subList != null)
{
IFacetAccessible merged = handler.Merge(req.GetFacetSpec(name), subList);
facetMap.Put(name, merged);
}
}
catch (Exception e)
{
logger.ErrorException(e.Message, e);
}
}
}
}
/// <summary>
/// Generates a merged BrowseResult from the supplied <see cref="T:BrowseRequest"/> and a <see cref="T:Lucene.Net.Search.Weight"/>.
/// The results are put into a Lucene.Net <see cref="T:Lucene.Net.Search.Collector"/> and a <see cref="T:System.Collections.Generic.IDictionary{System.String, IFacetAccessible}"/>.
/// </summary>
/// <param name="req"><see cref="T:BrowseRequest"/> for generating the facets.</param>
/// <param name="weight">A <see cref="T:Lucene.Net.Search.Weight"/> instance to alter the score of the queries in a multiple index scenario.</param>
/// <param name="hitCollector">A <see cref="T:Lucene.Net.Search.Collector"/> for the hits generated during a search.</param>
/// <param name="facetMap">A dictionary of all of the facet collections (output).</param>
/// <param name="start">The offset value for the document number.</param>
public virtual void Browse(
BrowseRequest req,
Weight weight,
Collector hitCollector,
IDictionary <string, IFacetAccessible> facetMap,
int start)
{
IBrowsable[] browsers = this.GetSubBrowsers();
// index empty
if (browsers == null || browsers.Length == 0)
{
return;
}
int[] starts = GetStarts();
var mergedMap = new Dictionary <string, IList <IFacetAccessible> >();
try
{
var facetColMap = new Dictionary <string, IFacetAccessible>();
for (int i = 0; i < browsers.Length; i++)
{
try
{
browsers[i].Browse(req, weight, hitCollector, facetColMap, (start + starts[i]));
}
finally
{
foreach (var entry in facetColMap)
{
string name = entry.Key;
IFacetAccessible facetAccessor = entry.Value;
var list = mergedMap.Get(name);
if (list == null)
{
list = new List <IFacetAccessible>(browsers.Length);
mergedMap.Put(name, list);
}
list.Add(facetAccessor);
}
facetColMap.Clear();
}
}
}
finally
{
if (req.MapReduceWrapper != null)
{
req.MapReduceWrapper.FinalizePartition();
}
foreach (var entry in mergedMap)
{
string name = entry.Key;
IFacetHandler handler = GetFacetHandler(name);
try
{
IList <IFacetAccessible> subList = entry.Value;
if (subList != null)
{
IFacetAccessible merged = handler.Merge(req.GetFacetSpec(name), subList);
facetMap.Put(name, merged);
}
}
catch (Exception e)
{
logger.Error(e.Message, e);
}
}
}
}