io.lettuce.core.search.arguments.hybrid

Class PostProcessingArgs

java.lang.Object

io.lettuce.core.search.arguments.hybrid.PostProcessingArgs

@Experimental
public class PostProcessingArgs
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 Builder for PostProcessingArgs.

Constructor Summary

Constructors

Constructor and Description
PostProcessingArgs()

Method Summary

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

Returns:

a new PostProcessingArgs.Builder for PostProcessingArgs.

build

public void build(CommandArgs<?,?> 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