Right now the solr package works with standard Solr input params and output structure. The Europeana input params somewhat match standard Solr input params, so only some work. Output: the output from Europeana isn't standard Solr that I'm used to - so use `parsetype="list"` instead of giving back a data frame

europeana_solr.md

Europeana API via the solr R package

Install solr from github since I pushed a small change to accomodate the query param instead of the typical q param

devtools::install_github("ropensci/solr")
library("solr")

Define the base URL

url <- "http://europeana.eu/api/v2/search.json"

Search for metadata

solr_search(query='Westminster', base = url, wskey='<key>', parsetype = "list", rows = 2)

Gives

http://europeana.eu/api/v2/search.json?rows=2&wt=json&query=Westminster&wskey=<key>
$apikey
[1] "<key>"

$action
[1] "search.json"

$success
[1] TRUE

$requestNumber
[1] 119

$itemsCount
[1] 2

$totalResults
[1] 12250

$items
$items[[1]]
$items[[1]]$id
[1] "/92022/E9FDF1DFE34CAA7B667BF65ACFD87EF0E196537D"

$items[[1]]$completeness
[1] 6

$items[[1]]$europeanaCollectionName
[1] "92022_Ag_EU_TEL_a0430E"

$items[[1]]$index
[1] 0

...cutoff

Search for metadata

solr_search(query='YEAR:[1525 TO 1527]', base = url, wskey='<key>', parsetype = "list", rows = 2)

Gives

http://europeana.eu/api/v2/search.json?rows=2&wt=json&query=YEAR:[1525 TO 1527]&wskey=<key>
$apikey
[1] "<key>"

$action
[1] "search.json"

$success
[1] TRUE

$requestNumber
[1] 121

$itemsCount
[1] 2

$totalResults
[1] 7770

$items
$items[[1]]
$items[[1]]$id
[1] "/08504/0C0F3702A3192793FED95C3CDAD9B37453562120"

$items[[1]]$completeness
[1] 6

$items[[1]]$europeanaCollectionName
[1] "08504_Ag_EU_ATHENA_Ministry_for_Cultural_Heritage_and_Activities"

$items[[1]]$index
[1] 0

...cutoff

Search for metadata

library("plyr")
out <- solr_search(query='Mona Lisa', profile = 'facets', base = url, wskey='<key>', parsetype = "list", rows = 2)
rbind.fill(lapply(out$facets[[1]]$fields, data.frame))

Gives

   label count
1    mul    67
2     de    42
3     en    39
4     it    36
5     nl    25
6     hu    17
7    swe    13
8     sv    12
9     da    11
10    no     6
11    et     5
12    pl     4
13    sk     4
14    fr     3
15    ro     1