BaseLangChain<RunInput extends Object, CallOptions extends RunnableOptions, RunOutput extends Object> class abstract

Base class for LangChain components (language models, chains, tools, etc.).

Inheritance
Implementers
Available extensions

Constructors

BaseLangChain({required CallOptions defaultOptions})
Base class for LangChain components (language models, chains, tools, etc.).
const

Properties

defaultOptions → CallOptions
The default options to use when invoking the Runnable.
finalinherited
hashCode → int
The hash code for this object.
no setterinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

batch(List<RunInput> inputs, {List<CallOptions>? options}) → Future<List<RunOutput>>
Batches the invocation of the Runnable on the given inputs.
inherited
bind(CallOptions options) → RunnableBinding<RunInput, CallOptions, RunOutput>
Binds the Runnable to the given options.
inherited
close() → void
Cleans up any resources associated with it the Runnable.
inherited
getCompatibleOptions(RunnableOptions? options) → CallOptions?
Returns the given options if they are compatible with the Runnable, otherwise returns null.
inherited
invoke(RunInput input, {CallOptions? options}) → Future<RunOutput>
Invokes the Runnable on the given input.
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
pipe<NewRunOutput extends Object?, NewCallOptions extends RunnableOptions>(Runnable<RunOutput, NewCallOptions, NewRunOutput> next) → RunnableSequence<RunInput, NewRunOutput>
Pipes the output of this Runnable into another Runnable using a RunnableSequence.
inherited
stream(RunInput input, {CallOptions? options}) → Stream<RunOutput>
Streams the output of invoking the Runnable on the given input.
inherited
streamFromInputStream(Stream<RunInput> inputStream, {CallOptions? options}) → Stream<RunOutput>
Streams the output of invoking the Runnable on the given inputStream.
inherited
toString() → String
A string representation of this object.
inherited
withFallbacks(List<Runnable<RunInput, RunnableOptions, RunOutput>> fallbacks) → RunnableWithFallback<RunInput, RunOutput>
Adds fallback runnables to be invoked if the primary runnable fails.
inherited
withRetry({int maxRetries = 3, FutureOr<bool> retryIf(Object e)?, List<Duration?>? delayDurations, bool addJitter = false}) → RunnableRetry<RunInput, RunOutput>
Adds retry logic to an existing runnable.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited
operator |(Runnable<RunOutput, RunnableOptions, NewRunOutput> next) → RunnableSequence<RunInput, NewRunOutput>

Available on Runnable<RunInput, CallOptions, RunOutput>, provided by the RunnableX extension

Pipes the output of this Runnable into another Runnable.