linked-data-reactor
Version:
Linked Data Reactor
201 lines (200 loc) • 9.14 kB
JavaScript
;
import Configurator from './Configurator';
class ResourceUtil{
getPropertyLabel(uri) {
var property='';
var tmp=uri;
var tmp2=tmp.split('#');
if(tmp2.length>1){
property=tmp2[1];
}else{
tmp2=tmp.split('/');
property=tmp2[tmp2.length-1];
}
return property;
}
parseProperties(body, graphName, resourceURI, category, propertyPath, usePropertyCategories, propertyCategories) {
let configurator = new Configurator();
let configExceptional = {}, config = {}, title = '', resourceType = '';
//handle properties config in different levels
//todo: now only handles level 2 properties should be extended later if needed
let exceptional = 0;
if(propertyPath && propertyPath.length){
//it is only for property path
configExceptional = configurator.preparePropertyConfig(graphName, resourceURI, propertyPath[1]);
exceptional = 1;
}
let filterByCategory=0, self=this;
let parsed = JSON.parse(body);
let output=[], propIndex={}, finalOutput=[];
if(usePropertyCategories){
//allow filter by category
if(!category){
//get first category as default
category = propertyCategories[0];
}
filterByCategory=1;
}
if(parsed.head.vars[0]=== 'callret-0'){
//no results!
return [];
}else{
parsed.results.bindings.forEach(function(el) {
//see if we can find a suitable title for resource
if(el.p.value === 'http://purl.org/dc/terms/title'){
title = el.o.value;
}else if(el.p.value === 'http://www.w3.org/2000/01/rdf-schema#label'){
title = el.o.value;
}else if (el.p.value === 'http://www.w3.org/1999/02/22-rdf-syntax-ns#type') {
resourceType = el.o.value;
}
//-------------------
config = configurator.preparePropertyConfig(graphName, resourceURI, el.p.value);
if(exceptional){
if(configExceptional && configExceptional.extensions){
configExceptional.extensions.forEach(function(ex){
if(ex.spec.propertyURI === el.p.value){
for(let cp in ex.config) {
//overwrite config with extension config
config[cp] = ex.config[cp];
}
}
});
}
}
//handle categories
if(filterByCategory){
if(!config || !config.category || category !== config.category[0]){
//skip property
return;
}
}
let property=self.getPropertyLabel(el.p.value);
//group by properties
//I put the valueType into instances because we might have cases (e.g. subject property) in which for different instances, we have different value types
if(propIndex[el.p.value]){
propIndex[el.p.value].push({value: el.o.value, valueType: el.o.type, dataType:(el.o.type==='typed-literal'?el.o.datatype:''), extended:parseInt(el.hasExtendedValue.value)});
}else{
propIndex[el.p.value]=[{value: el.o.value, valueType: el.o.type, dataType:(el.o.type==='typed-literal'?el.o.datatype:''), extended:parseInt(el.hasExtendedValue.value)}];
}
output.push({propertyURI:el.p.value, property: property, instances:[], config: config});
});
output.forEach(function(el) {
if(propIndex[el.propertyURI]){
finalOutput.push({propertyURI: el.propertyURI, property: el.property, config: el.config, instances: propIndex[el.propertyURI]});
propIndex[el.propertyURI]=null;
}
});
return {props: finalOutput, title: title, resourceType: resourceType};
}
}
buildConfigFromExtensions(extensions) {
let config = {};
extensions.forEach(function(el, i) {
config[el.spec.propertyURI] = el.config;
});
return config;
}
findExtensionIndex(extensions, propertyURI) {
let index = -1;
extensions.forEach(function(el, i) {
if(el.spec.propertyURI === propertyURI){
index = i;
}
});
return index;
}
getExtensionConfig(extensions, propertyURI){
let index = this.findExtensionIndex(extensions, propertyURI);
if(index === -1){
return {};
}
return extensions[index].config;
}
parseObjectProperties(body, graphName, resourceURI, propertyURI) {
let title, objectType = '';
let configurator = new Configurator();
let config = {}, configExceptional = configurator.preparePropertyConfig(graphName, resourceURI, propertyURI);
let self=this;
let parsed = JSON.parse(body);
let output=[], propIndex={}, finalOutput=[];
if(parsed.results.bindings.length){
parsed.results.bindings.forEach(function(el) {
config = configurator.preparePropertyConfig(graphName, resourceURI, el.p.value);
if(el.p.value === 'http://purl.org/dc/terms/title'){
title = el.o.value;
}else if(el.p.value === 'http://www.w3.org/2000/01/rdf-schema#label'){
title = el.o.value;
}else if (el.p.value === 'http://www.w3.org/1999/02/22-rdf-syntax-ns#type') {
objectType = el.o.value;
}
if(configExceptional && configExceptional.extensions){
configExceptional.extensions.forEach(function(ex){
if(ex.spec.propertyURI === el.p.value){
for(let cp in ex.config) {
//overwrite config with extension config
config[cp] = ex.config[cp];
}
}
});
}
let property=self.getPropertyLabel(el.p.value);
if(propIndex[el.p.value]){
propIndex[el.p.value].push({value: el.o.value, valueType: el.o.type, dataType:(el.o.type==='typed-literal'?el.o.datatype:''), extended:parseInt(el.hasExtendedValue.value)});
}else{
propIndex[el.p.value]=[{value: el.o.value, valueType: el.o.type, dataType:(el.o.type==='typed-literal'?el.o.datatype:''), extended:parseInt(el.hasExtendedValue.value)}];
}
output.push({propertyURI:el.p.value, property: property, instances:[], config: config});
});
output.forEach(function(el) {
if(propIndex[el.propertyURI]){
finalOutput.push({config: el.config, spec:{propertyURI: el.propertyURI, property: el.property, instances: propIndex[el.propertyURI]}});
propIndex[el.propertyURI]=null;
}
});
return {props: finalOutput, title: title, objectType: objectType};
}
}
//------ permission check functions---------------
deleteAdminProperties(list) {
let out = []
const adminProps = ['https://github.com/ali1k/ld-reactor/blob/master/vocabulary/index.ttl#isSuperUser', 'https://github.com/ali1k/ld-reactor/blob/master/vocabulary/index.ttl#isActive', 'https://github.com/ali1k/ld-reactor/blob/master/vocabulary/index.ttl#editorOfGraph', 'https://github.com/ali1k/ld-reactor/blob/master/vocabulary/index.ttl#editorOfResource', 'https://github.com/ali1k/ld-reactor/blob/master/vocabulary/index.ttl#editorOfProperty', 'http://purl.org/dc/terms/created'];
list.forEach(function(el) {
if (adminProps.indexOf(el.propertyURI) === -1){
out.push(el);
}
});
return out;
}
includesProperty(list, resource, property) {
let out = false;
list.forEach(function(el) {
if (el.r === resource && el.p === property){
out = true;
return out;
}
});
return out;
}
checkAccess(user, graph, resource, property) {
if(parseInt(user.isSuperUser)){
return {access: true, type: 'full'};
}else{
if(graph && user.editorOfGraph.indexOf(graph) !==-1){
return {access: true, type: 'full'};
}else{
if(resource && user.editorOfResource.indexOf(resource) !==-1){
return {access: true, type: 'full'};
}else{
if(property && this.includesProperty(user.editorOfProperty, resource, property)){
return {access: true, type: 'partial'};
}else{
return {access: false};
}
}
}
}
}
//--------------------------------------------------------
}
export default ResourceUtil;