allowing resource template for new resources

Author: ali1k

components/dataset/Dataset.js

@@ -79,11 +79,15 @@ class Dataset extends React.Component {
         let self = this;
         let createResourceDIV = '';
         let dcnf = this.state.config;
+        let templateResource = '';
         if(dcnf && !this.props.readOnly && dcnf.allowResourceNew){
+            if(dcnf.templateResource){
+                templateResource = dcnf.templateResource[0];
+            }
             createResourceDIV =
             <div className="ui list">
                 <div className="item">
-                    <div  className="medium ui basic icon labeled button" onClick={this.props.onCreateResource.bind(this, this.props.datasetURI)}>
+                    <div  className="medium ui basic icon labeled button" onClick={this.props.onCreateResource.bind(this, this.props.datasetURI, templateResource)}>
                         <i className="cube square large blue icon "></i> <i className="add black icon"></i> Add a New Resource
                     </div>
                 </div>

components/reactors/DatasetReactor.js

@@ -19,9 +19,10 @@ class DatasetReactor extends React.Component {
             resourceURI: resourceURI
         });
     }
-    handleCreateResource(datasetURI) {
+    handleCreateResource(datasetURI, templateResource) {
         this.context.executeAction(createResource, {
-            dataset: datasetURI
+            dataset: datasetURI,
+            templateResource: templateResource
         });
     }
     //removes properties from an object

configs/reactor.sample.js

@@ -141,6 +141,11 @@ export default {
                     isHidden: 0,
                     shortenURI: 0
                 },
+                'https://github.com/ali1k/ld-reactor/blob/master/vocabulary/index.ttl#templateResource': {
+                    label: ['The Template Resource'],
+                    hint: ['If set, this resource will be used as template for new resources.'],
+                    allowNewValue: 0
+                },
                 'https://github.com/ali1k/ld-reactor/blob/master/vocabulary/index.ttl#scope': {
                     hint: ['Determines the type of scope in LD-R'],
                     objectIEditor: ['BasicOptionInput'],

data/autocompletes.js

@@ -44,6 +44,7 @@ module.exports = {
             {title: 'ldr:resourceImageProperty'},
             {title: 'ldr:resourceLabelProperty'},
             {title: 'ldr:maxNumberOfResourcesOnPage'},
+            {title: 'ldr:templateResource'},
             {title: 'ldr:readOnly'},
             {title: 'ldr:readOnlyProperty'},
             {title: 'ldr:readOnlyResource'},

services/resource.js

@@ -354,7 +354,7 @@ export default {
             }
             getDynamicEndpointParameters(user, datasetURI, (endpointParameters)=>{
                 graphName = endpointParameters.graphName;
-                query = queryObject.getPrefixes() + queryObject.newResource(endpointParameters, user, graphName, newResourceURI);
+                query = queryObject.getPrefixes() + queryObject.newResource(endpointParameters, user, graphName, newResourceURI, params.templateResource);
                 HTTPQueryObject = getHTTPQuery('update', query, endpointParameters, outputFormat);
                 rp.post({uri: HTTPQueryObject.uri, form: HTTPQueryObject.params}).then(function(res){
                     if(enableLogs){

services/sparql/ResourceQuery.js

@@ -79,7 +79,7 @@ class ResourceQuery{
         `;
         return this.query;
     }
-    newResource(endpointParameters, user, graphName, newResourceURI) {
+    newResource(endpointParameters, user, graphName, newResourceURI, templateResourceURI) {
         //todo: consider different value types
         let {gStart, gEnd} = this.prepareGraphName(graphName);
         let userSt = '';
@@ -88,16 +88,37 @@ class ResourceQuery{
         }
         let date = new Date();
         let currentDate = date.toISOString(); //"2011-12-19T15:28:46.493Z"
-        this.query = `
-        INSERT DATA {
-            ${gStart}
-                <${newResourceURI}> a ldr:Resource ;
-                ldr:createdOn "${currentDate}"^^xsd:dateTime;
-                ${userSt}
-                rdfs:label "New Resource" .
-            ${gEnd}
+        // use a template for resource if set
+        if(templateResourceURI){
+            this.query = `
+            INSERT {
+                ${gStart}
+                    <${newResourceURI}> ?p ?o ;
+                    ldr:createdOn "${currentDate}"^^xsd:dateTime;
+                    ${userSt}
+                ${gEnd}
+            } WHERE {
+                ${gStart}
+                    <${templateResourceURI}> ?p ?o .
+                    FILTER (?p != ldr:cloneOf && ?p != ldr:createdOn && ?p != ldr:createdBy)
+                ${gEnd}
+            }
+            `;
+        } else {
+            // create an empty resource
+            this.query = `
+            INSERT DATA {
+                ${gStart}
+                    <${newResourceURI}> a ldr:Resource ;
+                    ldr:createdOn "${currentDate}"^^xsd:dateTime;
+                    ${userSt}
+                    rdfs:label "New Resource" .
+                ${gEnd}
+            }
+            `;
         }
-        `;
+
+
         return this.query;
     }
     annotateResource(endpointParameters, user, datasetURI, graphName, resourceURI, propertyURI, annotations, inNewDataset) {