LuceneIndexScope (Hibernate Search 6.1.8.Final)

```
public interface LuceneIndexScope
```
The LuceneIndexScope exposes IndexReaders directly, making it possible to query the Lucene indexes directly bypassing Hibernate Search.
The returned IndexReader instances must be closed using the IndexReader.close() method.
This API is intended for power users intending to extract information directly.

Author:

Sanne Grinovero (C) 2011 Red Hat Inc.

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`default IndexReader`	`openIndexReader()`	Opens an IndexReader for all indexes containing the entities of the search scope.
`IndexReader`	`openIndexReader(Set<String> routingKeys)`	Opens an IndexReader on shards assigned to the given routing keys for all indexes containing the entities of the search scope.

- Method Detail
  - openIndexReader
```
default IndexReader openIndexReader()
```
    Opens an IndexReader for all indexes containing the entities of the search scope.
    The instance must be closed after its use by the client of this class using IndexReader.close().
    If sharding is enabled, the returned reader will read all shards. If you need to read specific shards only, use openIndexReader(Set).
    WARNING: Even if multi-tenancy is enabled, the returned reader exposes documents of *all* tenants.
    
    Returns:
    
    an IndexReader containing the entities of the index scope
  - openIndexReader
```
IndexReader openIndexReader(Set<String> routingKeys)
```
    Opens an IndexReader on shards assigned to the given routing keys for all indexes containing the entities of the search scope.
    The instance must be closed after its use by the client of this class using IndexReader.close().
    WARNING: Even if multi-tenancy is enabled, the returned reader exposes documents of *all* tenants.
    
    Parameters:
    
    routingKeys - A collection containing zero, one or multiple string keys.
    
    Returns:
    
    an IndexReader containing the entities of the index scope