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FunctionToolFactory

This docs was updated at: 2026-02-23

com.paragon.responses.spec.FunctionToolFactory  ยท  Class

A factory for creating FunctionTool instances with a shared JsonSchemaProducer.

This factory simplifies dependency injection by providing a centralized way to create function tools with a consistent JSON schema producer configuration.

Example usage:

// Create factory with custom ObjectMapper
var factory = FunctionToolFactory.withObjectMapper(objectMapper);
// Create tools using the factory
var weatherTool = factory.create(GetWeatherTool.class);
var calculatorTool = factory.create(CalculatorTool.class);
// Add to store
var store = FunctionToolStore.create(objectMapper)
    .addAll(weatherTool, calculatorTool);

See Also

  • FunctionTool
  • FunctionToolStore

Methods

create

public static @NonNull FunctionToolFactory create()

Creates a new factory with a default JacksonJsonSchemaProducer.

Returns

a new factory

withObjectMapper

public static @NonNull FunctionToolFactory withObjectMapper(@NonNull ObjectMapper objectMapper)

Creates a new factory with a JacksonJsonSchemaProducer using the provided ObjectMapper.

Parameters

Name Description
objectMapper the ObjectMapper to use for JSON schema generation

Returns

a new factory

withProducer

public static @NonNull FunctionToolFactory withProducer(
      @NonNull JsonSchemaProducer jsonSchemaProducer)

Creates a new factory with the provided JsonSchemaProducer.

Parameters

Name Description
jsonSchemaProducer the JSON schema producer to use

Returns

a new factory

create

public <T extends FunctionTool<?>> @NonNull T create(@NonNull Class<T> toolClass)

Creates a new instance of the specified FunctionTool class.

The tool class must have a constructor that accepts a JsonSchemaProducer.

Parameters

Name Description
toolClass the class of the function tool to create
<T> the type of the function tool

Returns

a new instance of the function tool

Throws

Type Condition
IllegalArgumentException if the tool cannot be instantiated

getJsonSchemaProducer

public @NonNull JsonSchemaProducer getJsonSchemaProducer()

Returns the JsonSchemaProducer used by this factory.

Returns

the JSON schema producer