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Put named graphs work #54

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5098828
Put named graphs work
jmatsushita Jan 14, 2017
fd5e0cd
Test inserting multiple graphs in one doc
jmatsushita Jan 14, 2017
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76 changes: 46 additions & 30 deletions index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -37,6 +37,7 @@ function levelgraphJSONLD(db, jsonldOpts) {
}

jsonld.toRDF(expanded, options, function(err, triples) {

if (err || triples.length === 0) {
return callback(err, null);
}
Expand Down Expand Up @@ -86,42 +87,57 @@ function levelgraphJSONLD(db, jsonldOpts) {
}
});

triples['@default'].map(function(triple) {
Object.keys(triples).forEach(function(graph_key) {
var graph_name;

return ['subject', 'predicate', 'object'].reduce(function(acc, key) {
var node = triple[key];
// generate UUID to identify blank nodes
// uses type field set to 'blank node' by jsonld.js toRDF()
if (node.type === 'blank node') {
if (!blanks[node.value]) {
blanks[node.value] = '_:' + uuid.v1();
}
node.value = blanks[node.value];
}
// preserve object data types using double quotation for literals
// and don't keep data type for strings without defined language
if(key === 'object' && triple.object.datatype){
if(triple.object.datatype.match(XSDTYPE)){
if(triple.object.datatype === 'http://www.w3.org/2001/XMLSchema#string'){
node.value = '"' + triple.object.value + '"';
} else {
node.value = '"' + triple.object.value + '"^^' + triple.object.datatype;
}
} else if(triple.object.datatype.match(RDFLANGSTRING)){
node.value = '"' + triple.object.value + '"@' + triple.object.language;
var store_keys;
if (graph_key === '@default') {
// Do empty graph is @default for now.
store_keys = ['subject', 'predicate', 'object'];
} else {
store_keys = ['subject', 'predicate', 'object', 'graph'];
}

triples[graph_key].map(function(triple) {

return store_keys.reduce(function(acc, key) {
if(key === 'graph') {
acc[key] = graph_key;
} else {
node.value = '"' + triple.object.value + '"^^' + triple.object.datatype;
var node = triple[key];
// generate UUID to identify blank nodes
// uses type field set to 'blank node' by jsonld.js toRDF()
if (node.type === 'blank node') {
if (!blanks[node.value]) {
blanks[node.value] = '_:' + uuid.v1();
}
node.value = blanks[node.value];
}
// preserve object data types using double quotation for literals
// and don't keep data type for strings without defined language
if(key === 'object' && triple.object.datatype){
if(triple.object.datatype.match(XSDTYPE)){
if(triple.object.datatype === 'http://www.w3.org/2001/XMLSchema#string'){
node.value = '"' + triple.object.value + '"';
} else {
node.value = '"' + triple.object.value + '"^^' + triple.object.datatype;
}
} else if(triple.object.datatype.match(RDFLANGSTRING)){
node.value = '"' + triple.object.value + '"@' + triple.object.language;
} else {
node.value = '"' + triple.object.value + '"^^' + triple.object.datatype;
}
}
acc[key] = node.value;
}
}
acc[key] = node.value;
return acc;
}, {});
}).forEach(function(triple) {
stream.write(triple);
return acc;
}, {});
}).forEach(function(triple) {
stream.write(triple);
});
});
stream.end();
});

});
}

Expand Down
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