io.lettuce.core.search.arguments

Class PostProcessingArgs<K,V>

java.lang.Object

io.lettuce.core.search.arguments.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.

Basic Usage:

 {
     @code
     PostProcessingArgs args = PostProcessingArgs. builder().load("@price", "@category")
             .addOperation(GroupBy.of("@category").reduce(Reducer.of(ReduceFunction.COUNT).as("total")))
             .addOperation(Apply.of("@price * 0.9", "discounted_price"))
             .addOperation(SortBy.of("@discounted_price", SortDirection.DESC))
             .addOperation(Filter.of("@discounted_price > 100")).build();
 }
 

Since:

7.2

Author:

Aleksandar Todorov

See Also:

PostProcessingArgs.GroupBy, PostProcessingArgs.Apply, PostProcessingArgs.SortBy, PostProcessingArgs.Filter, PostProcessingArgs.Limit

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	PostProcessingArgs.Apply<K,V> APPLY post-processing operation.
static class	PostProcessingArgs.Builder<K,V> Builder for PostProcessingArgs.
static class	PostProcessingArgs.Filter<K,V> FILTER post-processing operation.
static class	PostProcessingArgs.GroupBy<K,V> GROUPBY post-processing operation.
static class	PostProcessingArgs.Limit<K,V> LIMIT post-processing operation.
static interface	PostProcessingArgs.PostProcessingOperation<K,V> Interface for post-processing operations applied in user-specified order.
static class	PostProcessingArgs.ReduceFunction Enumeration of REDUCE functions for GROUPBY operations.
static class	PostProcessingArgs.Reducer<K,V> REDUCE function for GROUPBY operations.
static class	PostProcessingArgs.SortBy<K> SORTBY post-processing operation.
static class	PostProcessingArgs.SortDirection Sort direction enumeration for SORTBY operations.
static class	PostProcessingArgs.SortProperty<K> Represents a sort property with direction for SORTBY operations.

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, then post-processing operations are built in user-specified order.

Parameters:

args - the CommandArgs to append to