io.lettuce.core.search.arguments.hybrid

Class PostProcessingArgs<K,V>

java.lang.Object

io.lettuce.core.search.arguments.hybrid.PostProcessingArgs<K,V>

Type Parameters:

K - Key type.

V - Value type.

@Experimental
public class PostProcessingArgs<K,V>
extends Object

Argument list builder for FT.HYBRID and FT.AGGREGATE post-processing operations. Operations are applied in user-specified order after the COMBINE clause.

The builder provides dedicated methods for each operation type with validation:

• PostProcessingArgs.Builder.groupBy(GroupBy) - Only one GROUPBY allowed
• PostProcessingArgs.Builder.sortBy(SortBy) - Only one SORTBY allowed
• PostProcessingArgs.Builder.limit(Limit) - Only one LIMIT allowed
• PostProcessingArgs.Builder.apply(Apply) - Multiple APPLY operations allowed
• PostProcessingArgs.Builder.filter(Filter) - Only one FILTER allowed

Basic Usage:

 
 {
     @code
     PostProcessingArgs args = PostProcessingArgs. builder().load("@price", "@category")
             .groupBy(GroupBy.of("@category").reduce(Reducers.count().as("total")))
             .apply(Apply.of("@price * 0.9", "discounted_price")).sortBy(SortBy.of("@discounted_price", SortDirection.DESC))
             .filter(Filter.of("@discounted_price > 100")).limit(Limit.of(0, 10)).build();
 }
 

Since:

7.2

Author:

Aleksandar Todorov

See Also:

GroupBy, Apply, SortBy, Filter, Limit

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	PostProcessingArgs.Builder<K,V> Builder for PostProcessingArgs.

Constructor Summary

Constructors

Constructor and Description
PostProcessingArgs()

Method Summary

Modifier and Type	Method and Description
void	build(CommandArgs<K,V> args) Build the post-processing command arguments.
static <K,V> PostProcessingArgs.Builder<K,V>	builder()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

PostProcessingArgs

public PostProcessingArgs()

Method Detail

builder

public static <K,V> PostProcessingArgs.Builder<K,V> builder()

Returns:

a new PostProcessingArgs.Builder for PostProcessingArgs.

build

public void build(CommandArgs<K,V> args)

Build the post-processing command arguments.

LOAD is built first (if specified), then post-processing operations are built in user-specified order.

Parameters:

args - the CommandArgs to append to