org.springframework.data.cassandra.core.mapping

Annotation Type SASI

@Documented
 @Retention(value=RUNTIME)
 @Target(value={FIELD,METHOD,ANNOTATION_TYPE})
public @interface SASI

Identifies a secondary index using SASI indexing on a single column.

SASI uses significantly using fewer memory, disk, and CPU resources. It enables querying with PREFIX and CONTAINS on strings, similar to the SQL implementation of LIKE = "foo*" or LIKE = "*foo*".

 @Table
 class Person {

        @SASI(analyzed = true, indexMode = CONTAINS) @StandardAnalyzed("en") String names; // allows LIKE queries
        @SASI int age // allows age >= … queries;
 }
 

SASI indexing can apply an analyzer that is applied during indexing. Annotation-based indexing supports standard analyzer and non-tokenizing analyzer.

Since:

2.0

Author:

Mark Paluch

See Also:

SASI.StandardAnalyzed, SASI.NonTokenizingAnalyzed

Optional Element Summary

Optional Elements

Modifier and Type	Optional Element and Description
SASI.IndexMode	indexMode The name of the index.
String	value The name of the index.

Element Detail

value

public abstract String value

The name of the index. If null or empty, then the index name will be generated by Cassandra and will be unknown unless column metadata is used to discover the generated index name.

Default:

""

indexMode

public abstract SASI.IndexMode indexMode

The name of the index. If null or empty, then the index name will be generated by Cassandra and will be unknown unless column metadata is used to discover the generated index name.

Default:

org.springframework.data.cassandra.core.mapping.SASI.IndexMode.PREFIX