This is how to search for a single exact match:

IndexHits<Node> hits = actors.get( "name", "Keanu Reeves" );
Node reeves = hits.getSingle();

IndexHits is an Iterable with some additional useful methods. For example getSingle() returns the first and only item from the result iterator, or null if there isn’t any hit.

Here’s how to get a single relationship by exact matching and retrieve its start and end nodes:

Relationship persephone = roles.get( "name", "Persephone" ).getSingle();
Node actor = persephone.getStartNode();
Node movie = persephone.getEndNode();

Finally, we can iterate over all exact matches from a relationship index:

for ( Relationship role : roles.get( "name", "Neo" ) )
{
    // this will give us Reeves twice
    Node reeves = role.getStartNode();
}

	Important
	In case you don’t iterate through all the hits, IndexHits.close() must be called explicitly.

There are two query methods, one which uses a key-value signature where the value represents a query for values with the given key only. The other method is more generic and supports querying for more than one key-value pair in the same query.

Here’s an example using the key-query option:

for ( Node actor : actors.query( "name", "*e*" ) )
{
    // This will return Reeves and Bellucci
}

In the following example the query uses multiple keys:

for ( Node movie : movies.query( "title:*Matrix* AND year:1999" ) )
{
    // This will return "The Matrix" from 1999 only.
}

	Note
	Beginning a wildcard search with "*" or "?" is discouraged by Lucene, but will nevertheless work.

	Caution
	You can’t have any whitespace in the search term with this syntax. See Section 19.11.3, “Querying with Lucene Query objects” for how to do that.