Class IfExecutor

java.lang.Object

ai.nervemind.app.executor.IfExecutor

All Implemented Interfaces:

NodeExecutor

@Component
public class IfExecutor
extends Object
implements NodeExecutor

Executor for the "if" node type - provides conditional branching in workflows.

Evaluates a condition expression and routes execution to different branches based on the result. Uses Spring Expression Language (SpEL) for condition evaluation with support for template interpolation.

Node Parameters

If node configuration parameters

Parameter	Type	Default	Description
condition	String	"true"	SpEL expression to evaluate

Template Variables

Use {{ variableName }} syntax to reference input data:

• {{ status }} == 'active' - Simple variable comparison
• {{ data.count }} > 10 - Nested path access
• {{ items[0].value }} - Array index access

SpEL Expression Examples

• {{ price }} > 100 and {{ stock }} > 0 - Logical AND
• {{ status }} == 'active' or {{ status }} == 'pending' - Logical OR
• #input['response'] != null - Null check with SpEL syntax

Output Data

Output keys added by this executor

Key	Type	Description
conditionResult	Boolean	The evaluated condition result
branch	String	"true" or "false" - indicates which branch to take

See Also:

• For multi-branch routing
• SpelExpressionParser

Constructor Summary

Constructors

Constructor	Description
IfExecutor()	Default constructor.

Method Summary

Modifier and Type	Method	Description
Map<String,Object>	execute(ai.nervemind.common.domain.Node node, Map<String,Object> input, ExecutionService.ExecutionContext context)	Executes the business logic for this node type.
String	getNodeType()	Unique identifier for the node type this executor handles.

Methods inherited from class Object

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

Constructor Details

IfExecutor

public IfExecutor()

Default constructor.

Method Details

execute

public Map<String,Object> execute(ai.nervemind.common.domain.Node node,
 Map<String,Object> input,
 ExecutionService.ExecutionContext context)

Description copied from interface: NodeExecutor

Executes the business logic for this node type.

Specified by:

execute in interface NodeExecutor

Parameters:

node - The node definition containing parameters and configuration. Use Node.parameters() to access user settings.

input - Combined output from all upstream nodes that connected to this node. For simple flows, this contains the direct predecessor's output. For merge nodes, it contains combined data.

context - Verification context providing access to workflow-scoped services, logger, and execution metadata.

Returns:

A Map containing the results of this node's execution. Keys in this map become available variables for downstream nodes.
Note: Returning null is treated as an empty map.

getNodeType

public String getNodeType()

Description copied from interface: NodeExecutor

Unique identifier for the node type this executor handles. This must match the 'type' field in the JSON definition of the node.

Specified by:

getNodeType in interface NodeExecutor

Returns:

The unique type string (e.g., "httpRequest", "llmChat").