io.lettuce.core.search.arguments

Class PostProcessingArgs.Builder<K,V>

java.lang.Object

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

Type Parameters:

K - Key type.

V - Value type.

Enclosing class:

PostProcessingArgs<K,V>

public static class PostProcessingArgs.Builder<K,V>
extends Object

Builder for PostProcessingArgs.

Constructor Summary

Constructors

Constructor and Description
Builder()

Method Summary

Modifier and Type	Method and Description
PostProcessingArgs.Builder<K,V>	addOperation(PostProcessingArgs.PostProcessingOperation<K,?> operation) Add a post-processing operation to the pipeline.
PostProcessingArgs<K,V>	build() Build the PostProcessingArgs.
PostProcessingArgs.Builder<K,V>	load(K... fields) Request loading of document attributes.

Methods inherited from class java.lang.Object

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

Constructor Detail

Builder

public Builder()

Method Detail

load

@SafeVarargs
public final PostProcessingArgs.Builder<K,V> load(K... fields)

Request loading of document attributes.

Parameters:

fields - the field identifiers

Returns:

this builder

addOperation

public PostProcessingArgs.Builder<K,V> addOperation(PostProcessingArgs.PostProcessingOperation<K,?> operation)

Add a post-processing operation to the pipeline.

Operations are applied in the order they are added. Supported operations include:

• PostProcessingArgs.GroupBy - Group results by properties with optional reducers
• PostProcessingArgs.Apply - Apply expressions to create computed fields
• PostProcessingArgs.SortBy - Sort results by properties
• PostProcessingArgs.Filter - Filter results by expressions

Example Usage:

 
 PostProcessingArgs.<String, String> builder()
     .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();
 
 

Parameters:

operation - the operation to add (GroupBy, Apply, SortBy, Filter, etc.)

Returns:

this builder

build

public PostProcessingArgs<K,V> build()

Build the PostProcessingArgs.

Returns:

the built PostProcessingArgs