OpenAIChatHelper

El asistente de chat permite conservar una lista de mensajes en memoria y efectuar avisos consecutivos.

Propiedades

Nombre de la propiedad	Tipo	Valor por defecto	Descripción
chat	OpenAIChatAPI	-	La instancia API de chat utilizada para la comunicación con OpenAI.
systemPrompt	OpenAIMessage	-	El mensaje del sistema que guía las respuestas del asistente de chat.
numberOfMessages	Integer	15	El número máximo de mensajes a conservar en el historial de chat.
parámetros	OpenAIChatCompletionsParameters	-	Los parámetros para la solicitud de terminación del chat OpenAI.
messages	Colección de OpenAIMessage	[]	La colección de mensajes intercambiados en la sesión de chat.
herramientas	Collection of OpenAITool	[]	List of registered OpenAI tools for function calling.
autoHandleToolCalls	Boolean	True	Boolean indicating whether tool calls are handled automatically using registered tools.
lastErrors	Collection	-	Collection containing the last errors encountered during chat operations.

Constructor

To create a new OpenAIChatHelper instance, it's best to use the create() method from the OpenAI client's chat API:

var $chatHelper:=$client.chat.create("You are a helpful assistant.")

This method creates a new chat helper with the specified system prompt and initializes it with default parameters. The system prompt defines the assistant's role and behavior throughout the conversation.

Funciones

prompt()

prompt(prompt : Text) : OpenAIChatCompletionsResult

Parámetros	Tipo	Descripción
prompt	Text	Texto a enviar al chat de OpenAI.
Resultado	OpenAIChatCompletionsResult	El resultado de finalización devuelto por el chat.

Envía una consulta de usuario al chat y devuelve el resultado de finalización correspondiente.

Ejemplo de Uso

var $result:=$chatHelper.prompt("Hello, how can I help you today?")
$result:=$chatHelper.prompt("Why 42?")

reset()

reset()

Resets the chat context by clearing all messages and unregistering all tools. This effectively starts a fresh conversation while keeping the system prompt and parameters intact.

Ejemplo de reinicio

$chatHelper.prompt("Hello!")
$chatHelper.reset()  // Clear all previous messages and tools

registerTool()

registerTool(tool : Object; handler : Object)

Parámetros	Tipo	Descripción
tool	Object	The tool definition object (or OpenAITool instance)
handler	Object	The function to handle tool calls (4D.Function or Object), optional if defined inside tool as handler property

Registers a tool with its handler function for automatic tool call handling.

The handler parameter can be:

• A 4D.Function: Direct handler function
• Un Objeto: un objeto que contiene una propiedad formula que coincide con el nombre de la función de la herramienta

The handler function receives an object containing the parameters passed from the OpenAI tool call. This object contains key-value pairs where the keys match the parameter names defined in the tool's schema, and the values are the actual arguments provided by the AI model.

Register Tool Example

// Example 1: Simple registration with direct handler
var $tool:={type: "function"; function: {name: "get_weather"; description: "Get current weather"; parameters: {type: "object"; properties: {location: {type: "string"; description: "City name"}}}}}
var $handler:=Formula(return "Sunny, 25°C in "+$1.location)

$chatHelper.registerTool($tool; $handler)

// Example 2: Tool with handler property (no second parameter needed)
var $tool:={name: "calculate"; description: "Perform calculations"; handler: Formula(return String(Num($1.expression)))}
$chatHelper.registerTool($tool)

// Example 3: Using object notation
$chatHelper.registerTool({tool: $tool; handler: $handler})

// Example 4: Handler as object with formula matching tool name
var $tool:={name: "getTime"; description: "Get current time"}
var $handlerObj:=cs.MyTimeTool.new() // class with a getTime function
$chatHelper.registerTool($tool; $handlerObj)

registerTools()

registerTools(toolsWithHandlers : Variant)

Parámetros	Tipo	Descripción
toolsWithHandlers	Variant	Object or Collection containing tools and their handlers

Registers multiple tools at once. The parameter can be:

• Collection: Array of tool objects (with handlers embedded or separate)
• Object: Object with function names as keys mapping to tool definitions
• Object with tools attribute: Object containing a tools collection and formula properties matching tool names

Register Multiple Tools Example

Example 1: Collection format with handlers in tools

var $weatherTool:={name: "getWeather"; description: "Get current weather"; handler: Formula(return "Sunny, 25°C in "+$1.location)}
var $calculatorTool:={name: "calculate"; description: "Perform calculations"; handler: Formula(return String(Num($1.expression)))}

$chatHelper.registerTools([$weatherTool; $calculatorTool])

Example 2: Object format with separate tool and handler

var $toolsWithSeparateHandlers:={}
$toolsWithSeparateHandlers.getWeather:={tool: $weatherToolDefinition; handler: $weatherHandler}
$toolsWithSeparateHandlers.calculate:={tool: $calculatorToolDefinition; handler: $calculatorHandler}

$chatHelper.registerTools($toolsWithSeparateHandlers)

Example 3: Object with tools collection attribute and formula properties

MyTools class:

Class constructor
    this.tools:=[{name: "getWeather"; description: "Get current weather"}; \
                 {name: "getTime"; description: "Get current time"}]  // Collection of tool definitions

Function getWeather($parameters: Object)
    return "Sunny, 25°C"

Function getTime($parameters: Object)
    return String(Current time)

$chatHelper.registerTools(cs.MyTools.new())

Example 4: Simple object format with tools as properties

var $tools:={}
$tools.getWeather:=$weatherTool  // Tool with handler property
$tools.calculate:=$calculatorTool  // Tool with handler property

$chatHelper.registerTools($tools)

unregisterTool()

unregisterTool(functionName : Text)

Parámetros	Tipo	Descripción
functionName	Text	The name of the function tool to unregister

Unregisters a specific tool by its function name. This removes the tool from the registered tools collection, clears its handler, and removes it from the parameters.

Unregister Tool Example

$chatHelper.registerTool($weatherTool; $weatherHandler)
$chatHelper.unregisterTool("get_weather")  // Remove the weather tool

unregisterTools()

unregisterTools()

Unregisters all tools at once. This clears all tool handlers, empties the tools collection, and removes all tools from the parameters.

Unregister All Tools Example

$chatHelper.registerTools($multipleTools)
$chatHelper.unregisterTools()  // Remove all tools