MNALIB::MnaGraphExecutor Class Reference

Graph executor for MNA pipelines. More...

#include <mna_graph_executor.h>

Classes
struct	Context
struct	StreamContext

Public Types
using	ProgressCallback
	Progress callback type.
using	PluginFactory = std::function<QObject*(const QString& opType)>

Static Public Member Functions
static Context	execute (MnaGraph &graph, const QVariantMap &graphInputs)
static Context	executeIncremental (MnaGraph &graph, Context &existing)
static QVariantMap	executeNode (const MnaNode &node, const QVariantMap &inputs)
static void	setProgressCallback (ProgressCallback cb)
static StreamContext	startStream (MnaGraph &graph, PluginFactory factory)
static void	stopStream (StreamContext &ctx)

Detailed Description

Graph executor for MNA pipelines.

Executes a computational graph by traversing nodes in topological order and invoking registered operation functions.

Definition at line 79 of file mna_graph_executor.h.

Member Typedef Documentation

PluginFactory

using MNALIB::MnaGraphExecutor::PluginFactory = std::function<QObject*(const QString& opType)>

Factory callback: given a node's opType, create the corresponding live plugin. Returns nullptr if the opType is unknown. The host app provides this callback.

Definition at line 150 of file mna_graph_executor.h.

ProgressCallback

using MNALIB::MnaGraphExecutor::ProgressCallback

Initial value:

std::function<void(const QString& nodeId,
                                                int current, int total)>

Progress callback type.

Definition at line 136 of file mna_graph_executor.h.

Member Function Documentation

execute()

MnaGraphExecutor::Context MnaGraphExecutor::execute ( MnaGraph & graph, const QVariantMap & graphInputs )

static

Execute the full graph (all nodes in topological order).

Parameters

graph	The graph to execute.
graphInputs	Named inputs fed into graph-level input ports.

Returns

Execution context with all results.

Definition at line 65 of file mna_graph_executor.cpp.

executeIncremental()

MnaGraphExecutor::Context MnaGraphExecutor::executeIncremental ( MnaGraph & graph, Context & existing )

static

Execute only dirty nodes and their downstream dependents.

Parameters

graph	The graph to execute.
existing	Existing context with prior results.

Returns

Updated context.

Definition at line 135 of file mna_graph_executor.cpp.

executeNode()

QVariantMap MnaGraphExecutor::executeNode ( const MnaNode & node, const QVariantMap & inputs )

static

Execute a single node (for testing/debugging).

Parameters

node	The node to execute.
inputs	Input data keyed by port name.

Returns

Output data keyed by port name.

Definition at line 194 of file mna_graph_executor.cpp.

setProgressCallback()

void MnaGraphExecutor::setProgressCallback ( ProgressCallback cb )

static

Set a progress callback invoked for each node execution.

Definition at line 328 of file mna_graph_executor.cpp.

startStream()

MnaGraphExecutor::StreamContext MnaGraphExecutor::startStream ( MnaGraph & graph, PluginFactory factory )

static

Start stream-mode execution of a graph.

1. Validates the graph
2. Performs topological sort
3. For each node, calls factory to instantiate a live plugin
4. Applies MnaParamTree values to node attributes
5. Wires connections based on port dataKind matching

The mna library does NOT depend on MNE Scan — the host app provides the factory and is responsible for wiring Qt signal/slot connections between the returned QObject* instances.

Parameters

[in,out]	graph	The pipeline graph.
[in]	factory	Callback that maps opType → live QObject* plugin.

Returns

Stream context. Check ctx.running to see if startup succeeded.

Definition at line 337 of file mna_graph_executor.cpp.

stopStream()

void MnaGraphExecutor::stopStream ( StreamContext & ctx )

static

Stop a running stream. Iterates nodes in reverse topological order and deletes the live plugin objects.

Parameters

[in,out]

ctx

The stream context to stop.

Definition at line 395 of file mna_graph_executor.cpp.

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The documentation for this class was generated from the following files:

• src/libraries/mna/mna_graph_executor.h
• src/libraries/mna/mna_graph_executor.cpp