Skip to content

Sparql looping #1269

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
3ach wants to merge 6 commits into
base: master
Choose a base branch
from
Open

Sparql looping #1269

Changes from all commits
Commits
Show all changes
6 commits
Select commit Hold shift + click to select a range
71b2611
Loop over sparql results
3ach May 27, 2020
afc2ee3
Merge branch 'master' into sparql-looping
cjmyers May 27, 2020
b07cfe6
Add sorting
3ach May 29, 2020
2ef83f7
Merge branch 'master' into sparql-looping
3ach May 30, 2020
546f607
Merge branch 'master' into sparql-looping
cjmyers Jun 11, 2025
2eec31f
Merge branch 'master' into sparql-looping
cjmyers Jun 11, 2025
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
17 changes: 14 additions & 3 deletions lib/sparql/sparql.js
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -127,7 +127,11 @@ function query (sparql, graphUri, accept, explorer = false) {
function queryJson (sparql, graphUri, explorer = false) {
// const timer = Timer('sparql query')

return query(sparql, graphUri, 'application/sparql-results+json', explorer).then(parseResult, handleError)
if (sparql.includes('LIMIT')) {
return query(sparql, graphUri, 'application/sparql-results+json', explorer).then(parseResult, handleError)
} else {
return queryJsonStaggered(sparql, graphUri, explorer)
}

function parseResult (res) {
// timer()
Expand All @@ -154,18 +158,25 @@ function queryJson (sparql, graphUri, explorer = false) {
}
}

function queryJsonStaggered (sparql, graphUri) {
function queryJsonStaggered (sparql, graphUri, explorer = false) {
var offset = 0
var limit = config.get('staggeredQueryLimit')

var resultsUnion = []
if (!sparql.includes('ORDER BY')) {
let bound = sparql.match(/\?[A-Za-z0-9_]+/)
if (bound !== null) {
let term = bound[0]
sparql = sparql + ' ORDER BY ' + term
}
}

return performQuery()

function performQuery () {
console.log('queryJsonStaggered: offset ' + offset + ', limit ' + limit + ', ' + resultsUnion.length + ' results so far')

return queryJson(sparql + ' OFFSET ' + offset + ' LIMIT ' + limit, graphUri).then((results) => {
return queryJson(sparql + ' OFFSET ' + offset + ' LIMIT ' + limit, graphUri, explorer).then((results) => {
// console.log('qj results')
// console.log(JSON.stringify(results))

Expand Down
Loading