NextGraph
/
nextgraph-rs
1
3
Fork 1
Code Issues 3 Pull Requests Packages Projects 2 Releases 3 Activity

JS SDK: doc_subscribe

Browse Source
master
Niko PLP 6 days ago
parent fed970b55d
commit 3916dbbfd2
3 changed files with 83 additions and 34 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Show Stats Download Patch File Download Diff File
  1. 102
      ng-sdk-js/app-node/index.js
  2. 2
      ng-sdk-js/prepare-node.js
  3. 13
      ng-sdk-js/src/lib.rs

102
ng-sdk-js/app-node/index.js
Unescape View File

@ -58,8 +58,8 @@ ng.wallet_read_file(buffer).then(async (wallet)=>{
console.log(connection_status);
let dump = await ng.rdf_dump(session_id);
console.log("==== DUMP ====");
let dump = await ng.rdf_dump(session_id);
console.log(dump);
console.log("==== END of DUMP ====");
@ -71,53 +71,89 @@ ng.wallet_read_file(buffer).then(async (wallet)=>{
let base = nuri.substring(0,53);
console.log("base=",base);
await ng.sparql_update(session_id, "INSERT DATA { <> <example:predicate> \"An example value1000\". }", nuri );
// EXAMPLE OF SUBSCRIBING TO A DOCUMENT. base is the Nuri half first part (the document ID proper).
// SELECT
// we use base to replace <> in the subject
//call unsub when you are done subscribing you don't want to receive updates anymore
let unsub = await ng.doc_subscribe(base, session_id,
async (response) => {
let sparql_result = await ng.sparql_query(session_id, "SELECT ?p ?o ?g WHERE { GRAPH ?g { <> ?p ?o } }", base);
console.log(sparql_result);
for (const q of sparql_result.results.bindings) {
console.log(q);
}
if (response.V0.State?.graph) {
let json_str = new TextDecoder().decode(response.V0.State.graph.triples);
triples = JSON.parse(json_str);
// specifying a nuri in the query arguments, is equivalent to settings the GRAPH in the WHERE
sparql_result = await ng.sparql_query(session_id, "SELECT ?s ?p ?o WHERE { ?s ?p ?o }", undefined, nuri);
console.log(sparql_result);
for (const q of sparql_result.results.bindings) {
console.log(q);
for (const triple of triples){
// deal with each triple
console.log("STATE",triple);
}
// base can be omitted if it isn't used
} else if (response.V0.Patch?.graph) {
sparql_result = await ng.sparql_query(session_id, "SELECT ?s ?p ?o ?g WHERE { GRAPH ?g { ?s ?p ?o } }");
console.log(sparql_result);
for (const q of sparql_result.results.bindings) {
console.log(q);
}
let inserts_json_str = new TextDecoder().decode(response.V0.Patch.graph.inserts);
let inserts = JSON.parse(inserts_json_str);
let removes_json_str = new TextDecoder().decode(response.V0.Patch.graph.removes);
let removes = JSON.parse(removes_json_str);
// CONSTRUCT
for (const insert of inserts){
// deal with each insert
console.log("INSERT",insert);
}
for (const remove of removes){
// deal with each remove
console.log("REMOVE",remove);
}
let triples = await ng.sparql_query(session_id, `CONSTRUCT { ?s ?p ?o } WHERE { GRAPH <${nuri}> { ?s ?p ?o } }`, base);
for (const q of triples) {
console.log(q.subject.toString(), q.predicate.toString(), q.object.toString())
}
}
);
// is equivalent to
//await ng.sparql_update(session_id, "INSERT DATA { <> <example:predicate> \"An example value1000\". }", nuri );
triples = await ng.sparql_query(session_id, "CONSTRUCT { ?s ?p ?o } WHERE { ?s ?p ?o }", base, nuri);
for (const q of triples) {
console.log(q.subject.toString(), q.predicate.toString(), q.object.toString())
}
// SELECT
// we use base to replace <> in the subject
// let sparql_result = await ng.sparql_query(session_id, "SELECT ?p ?o ?g WHERE { GRAPH ?g { <> ?p ?o } }", base);
// console.log(sparql_result);
// for (const q of sparql_result.results.bindings) {
// console.log(q);
// }
// // specifying a nuri in the query arguments, is equivalent to settings the GRAPH in the WHERE
// sparql_result = await ng.sparql_query(session_id, "SELECT ?s ?p ?o WHERE { ?s ?p ?o }", undefined, nuri);
// console.log(sparql_result);
// for (const q of sparql_result.results.bindings) {
// console.log(q);
// }
// // base can be omitted if it isn't used
// sparql_result = await ng.sparql_query(session_id, "SELECT ?s ?p ?o ?g WHERE { GRAPH ?g { ?s ?p ?o } }");
// console.log(sparql_result);
// for (const q of sparql_result.results.bindings) {
// console.log(q);
// }
// // CONSTRUCT
// let triples = await ng.sparql_query(session_id, `CONSTRUCT { ?s ?p ?o } WHERE { GRAPH <${nuri}> { ?s ?p ?o } }`, base);
// for (const q of triples) {
// console.log(q.subject.toString(), q.predicate.toString(), q.object.toString())
// }
// // is equivalent to
// triples = await ng.sparql_query(session_id, "CONSTRUCT { ?s ?p ?o } WHERE { ?s ?p ?o }", base, nuri);
// for (const q of triples) {
// console.log(q.subject.toString(), q.predicate.toString(), q.object.toString())
// }
// cleaning up
// // cleaning up
await ng.user_disconnect(user_id_string);
// await ng.user_disconnect(user_id_string);
await ng.session_stop(user_id_string);
// await ng.session_stop(user_id_string);
await ng.wallet_close(wallet_name);
// await ng.wallet_close(wallet_name);
console.log("the end");
} catch (e) {

2
ng-sdk-js/prepare-node.js
Unescape View File

@ -6,7 +6,7 @@ const PATH_README = './pkg-node/README.md';
const pkg_json = fs.readFileSync(PATH);
let pkg = JSON.parse(pkg_json)
pkg.name = "nextgraph";
pkg.version = "0.1.1-alpha.1";
pkg.version = "0.1.1-alpha.3";
pkg.description = "nodeJS SDK of NextGraph";
pkg.files.push("ng_sdk_js_bg.wasm.d.ts");
pkg.files.push("snippets/**/*.js");

13
ng-sdk-js/src/lib.rs
Unescape View File

@ -1688,6 +1688,19 @@ pub async fn doc_fetch_repo_subscribe(repo_o: String) -> Result<JsValue, String>
.unwrap())
}
#[wasm_bindgen]
pub async fn doc_subscribe(
repo_o: String,
session_id: JsValue,
callback: &js_sys::Function,
) -> Result<JsValue, String> {
let session_id: u64 = serde_wasm_bindgen::from_value::<u64>(session_id)
.map_err(|_| "Deserialization error of session_id".to_string())?;
let mut request = AppRequest::doc_fetch_repo_subscribe(repo_o).map_err(|e| e.to_string())?;
request.set_session_id(session_id);
app_request_stream_(request, callback).await
}
// // #[wasm_bindgen]
// pub async fn get_readcap() -> Result<JsValue, String> {
// let request = ObjectRef::nil();

Write Preview
Loading…
Cancel
Save