---
name: "Catmandu::Fix::aref_query"
section: "3pm"
platform: "linux"
package: "libcatmandu-rdf-perl"
version: "0.32-3"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/Catmandu::Fix::aref_query"
---

# Catmandu::Fix::aref\_query(3pm)

copy values of RDF in aREF to a new field

## NAME

Catmandu::Fix::aref\_query - copy values of RDF in aREF to a new field

## SYNOPSIS

In Catmandu Fix language

```
    aref_query( dc_title => title )
    aref_query( query => 'dc_title', field => 'title' )
    aref_query( 'http://example.org/subject', dc_title => title )
```

In Perl code

```
    use Catmandu::Fix::aref_query as => 'my_query';
    use RDF::aREF;

    my $rdf = encode_aref("example.ttl");
    my_query( $rdf, dc_title => 'title' );
```

## DESCRIPTION

This Catmandu::Fix can be used to map values of imported RDF, given in aREF \<http://gbv.github.io/aREF/\> structure

## ARGUMENTS

- subject

  Optional subject URI (first argument). By default, the fields `"_uri"` and `"_uri"` are used.

- query

  aREF query expression (first or second argument)

- path

  Field name to map RDF data to (last argument). Existing values are also kept.

## SEE ALSO

Function `"aref_query"` in RDF::aREF