LINK

The LINK field specifier (case sensitive) allows you to link a query to a document of a different type to find results. For example, it allows you to link a query to interests in a user profile.

You use the LINK specifier to specify a ReferenceMemoryMappedType field that references the documents that you want to link the query to. The LINK specifier links result documents that have one value in this field to documents that have the same value in a ReferenceType field. You must also specify the LinkFieldText parameter, to specify the field values that you want to find in the documents that the LINK field references.

Format

FieldText=LINK{}:yourField

yourField

A single ReferenceMemoryMappedType field, which references the documents that you want to link your query to.

Example

Text=Brazil&FieldText=LINK{}:USERREF&LinkFieldText=MATCH{FOOTBALL}:INTEREST

This query returns documents that contain the term Brazil. In the matching documents, it links the value of the USERREF field to documents that have the same value in the reference field. The final results set contains only documents that contain the term Brazil, where the linked document contains an INTEREST field with the value FOOTBALL.

For example, if the USERREF field contains a username, which also occurs in the reference field of a user profile, this query finds documents about Brazil by users whose user profile lists FOOTBALL as an interest. This method might help restrict results to documents about the Brazilian world cup, rather than the film Brazil.


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