Comunica Quadpattern Membership Filter Query Operation Actor


A Query Operation actor that
handles SPARQL triple/quad pattern operations
and filter out fully materialized patterns that are guaranteed to have no matches based on any available approximate membership filters.

This module is part of the Comunica framework,
and should only be used by developers that want to build their own query engine.

Click here if you just want to query with Comunica.

This module is part of the Comunica framework.

Install

``bash
$ yarn add @comunica/actor-query-operation-quadpattern-membership-filter
`

Configure

After installing, this package can be added to your engine's configuration as follows:
`text
{
"@context": [
...
"https://linkedsoftwaredependencies.org/bundles/npm/@comunica/actor-query-operation-quadpattern-membership-filter/^1.0.0/components/context.jsonld"
],
"actors": [
...
{
"@id": "config-setsa:rdf-membership-filter.json#myTripleMembershipFilterOperator",
"@type": "ActorQueryOperationQuadpatternMembershipFilter",
"cbqo:mediatorQueryOperation": {
"@id": "config-setsa:rdf-membership-filter.json#mediatorQueryOperation",
"@type": "MediatorNumberMin",
"field": "httpRequests",
"ignoreErrors": true,
"cc:Mediator/bus": { "@id": "cbqo:Bus/QueryOperation" }
}
}
]
}
`

$3

* cbqo:mediatorQueryOperation`: A mediator over the Query Operation bus.