Class SearcherFactory

Factory class used by SearcherManager to create new IndexSearchers. The default implementation just creates an IndexSearcher with no custom behavior:

public IndexSearcher NewSearcher(IndexReader r)
{
    return new IndexSearcher(r);
}

You can pass your own factory instead if you want custom behavior, such as:

• Setting a custom scoring model: Similarity
• Parallel per-segment search: IndexSearcher(IndexReader, TaskScheduler?)
• Return custom subclasses of IndexSearcher (for example that implement distributed scoring)
• Run queries to warm your IndexSearcher before it is used. Note: when using near-realtime search you may want to also set MergedSegmentWarmer to warm newly merged segments in the background, outside of the reopen path.

Note

This API is experimental and might change in incompatible ways in the next release.

Inheritance

object

SearcherFactory

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Namespace: Lucene.Net.Search

Assembly: Lucene.Net.dll

Syntax

public class SearcherFactory

Methods

NewSearcher(IndexReader)

Returns a new IndexSearcher over the given reader.

Declaration

public virtual IndexSearcher NewSearcher(IndexReader reader)

Parameters

Type	Name	Description
IndexReader	reader

Returns

Type	Description
IndexSearcher