LookupAttribute

Description

Lookup attributes from a lookup service

Tags

Attribute Expression Language, attributes, cache, enrich, join, lookup

Properties

In the list below required Properties are shown with an asterisk (*). Other properties are considered optional. The table also indicates any default values, and whether a property supports the NiFi Expression Language.

Display Name	API Name	Default Value	Allowable Values	Description
Lookup Service *	lookup-service		Controller Service: StringLookupService Implementations: DistributedMapCacheLookupService ElasticSearchStringLookupService PropertiesFileLookupService SimpleCsvFileLookupService SimpleDatabaseLookupService SimpleKeyValueLookupService SimpleScriptedLookupService XMLFileLookupService	The lookup service to use for attribute lookups
Include Empty Values *	include-empty-values	true	true false	Include null or blank values for keys that are null or blank

Dynamic Properties

Name	Value	Description
The name of the attribute to add to the FlowFile	The name of the key or property to retrieve from the lookup service	Adds a FlowFile attribute specified by the dynamic property's key with the value found in the lookup service using the the dynamic property's value Supports Expression Language: Yes, evaluated using FlowFile Attributes and Environment variables.

Relationships

Name	Description
failure	FlowFiles with failing lookups are routed to this relationship
matched	FlowFiles with matching lookups are routed to this relationship
unmatched	FlowFiles with missing lookups are routed to this relationship

Reads Attributes

This processor does not read attributes.

Writes Attributes

This processor does not write attributes.

State Management

This component does not store state.

Restricted

This component is not restricted.

Input Requirement

This component requires an incoming relationship.

System Resource Considerations

This component does not specify system resource considerations.

See Also