info.archinnov.achilles.annotations

Annotation Type ClusteringColumn

@Retention(value=RUNTIME)
 @Target(value=FIELD)
 @Documented
public @interface ClusteringColumn

Indicates that this component is a clustering column key. Please note that the ordering starts at 1

 @Table
 public class Entity {

 // Partition key component
 @PartitionKey
 private Long userId;

 // Clustering column 1. Date in YYYYMMDD
 @ClusteringColumn(1)
 private int date;

 // Clustering column 2. type
 @ClusteringColumn(2)
 private String type;
 }

 
 

See Also:

@ClusteringColumn

Optional Element Summary

Optional Elements

Modifier and Type	Optional Element and Description
boolean	asc Define the clustering order on a clustering column.
int	value The order of this clustering column, starting at 1

Element Detail

value

public abstract int value

The order of this clustering column, starting at 1

Returns:

Default:

1

asc

public abstract boolean asc

Define the clustering order on a clustering column. Default value is true

 @Table
 public class Entity {

 // Partition key
 @PartitionKey
 private Long userId;

 // Ascending clustering column. "asc" can be omitted because defaults to "true"
 @ClusteringColumn(value = 1, asc = true)
 private UUID time;

 // Descending clustering column.
 @ClusteringColumn(value = 2, asc = false)
 private int type;
 }

 

Default:

true