http://git-wip-us.apache.org/repos/asf/jena/blob/2fb788d3/jena-fuseki2/src/main/webapp/js/lib/remote-sparql-service.js
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diff --git a/jena-fuseki2/src/main/webapp/js/lib/remote-sparql-service.js
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--- a/jena-fuseki2/src/main/webapp/js/lib/remote-sparql-service.js
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-/** A simple interface to a remote SPARQL service */
-
-/** This class provides a duck-typed API for accessing the content of a value
- * returned from a SPARQL service. The key methods are:
- *
- * asText - returns the result as a suitably formatted text string
- * asJSON - returns the result as a suitably formatted JSON string
- * asXML - returns the result as a suitable formatted XML string
- * asTable - returns the result as an array of objects, with one key per
object per query variable
- */
-var RemoteSparqlServiceResult = function( val, format ) {
- this._val = val;
- this._format = format;
-}
-
-_.extend( RemoteSparqlServiceResult.prototype, {
- asText: function() {
- var data = this._val;
- return {
- count: data.split('\n').length - 5,
- data: data,
- mime: "text/plain"
- };
- },
-
- asJSON: function() {
- var json, data = this._val;
-
- if (_.isString( data )) {
- json = data;
- data = JSON.parse(data);
- }
- else {
- // en bas le Internet Explorer
- json = JSON.stringify( data, null, 2 );
- }
-
- return {
- count: data.results.bindings.length,
- data: json,
- mime: "application/json"
- };
- },
-
- asXML: function() {
- var count, xml, data = this._val;
-
- if (_.isString( data )) {
- xml = data;
- data = $.parseXML( data );
- }
- else {
- xml = xmlToString( data );
- }
-
- return {
- count: $( data ).find("results").children().length,
- data: xml,
- mime: "application/xml"
- };
- },
-
- asTable: function( config ) {
- /* Shorten a URI to qname form, if possible */
- var toQName = function( prefixes, uri ) {
- var result = uri, qname, u = uri;
-
- if (u.substring( 0, 1 ) === '<') {
- u = u.substring( 1, u.length - 1 );
- }
-
- $.each( prefixes, function( prefix, prefURI ) {
- if (u.indexOf( prefURI ) === 0) {
- qname = sprintf( "%s:%s", prefix, u.substring( prefURI.length ) );
-
- if (qname.length < result.length) {
- result = qname;
- }
- }
- } );
- return result;
- };
-
- /** Format a value for display in the table view */
- var dataTableValue = function( v ) {
- var f, parts;
-
- if (_.isNumber( v )) {
- f = parseFloat( v );
- }
- else if (v.match( /\^\^/ )) {
- parts = v.match( /^"*([^\\^\\""]*)"*\^\^<*(.*)>*$/m )
- f = sprintf( "<span title='Type: %s'>%s</span>", parts[2], parts[1])
- }
- else if (v.match( /@/ )) {
- parts = v.match( /^"(.*)"@([^@]*)/ );
- f = sprintf( "<span title='Language: %s'>%s</span>", parts[2],
parts[1] );
- }
- else {
- f = toQName( config.prefixes, v );
-
- if (f.match( /^</ )) {
- f = f.slice( 1, -1 );
- }
-
- f = _.escape(f );
- }
-
- return f;
- };
-
- var data = this._val;
- var lines = _.compact(data.split( "\n" ));
-
- var columnHeaders = _.map( lines.shift().split("\t"), function( header) {
- return {sTitle: header};
- } );
-
- var rows = _.map( lines, function( line ) {
- var values = _.flatten( [line.split("\t")] );
- return _.map( values, dataTableValue );
- } );
-
- return {
- count: lines.length,
- aoColumns: columnHeaders,
- aaData: rows,
- table: true
- };
- },
-
- asFormat: function( format, config ) {
- switch (format) {
- case "text":
- return this.asText();
- case "json":
- return this.asJSON();
- case "xml":
- return this.asXML();
- case "tsv":
- return this.asTable( config );
- }
-
- return null;
- }
-
-} );
-
-
-/** This class proxies a service which is behind a remote SPARQL endpoint URL
*/
-var RemoteSparqlService = function() {
-};
-
-
-_.extend( RemoteSparqlService.prototype, {
- execute: function( query, options ) {
-
- var ajaxDataType = function( format ) {
- return {
- tsv: "html",
- csv: "html",
- }[format] || format;
- };
-
- var url = options.url;
- var format = options.format;
- var onSuccess = options.success;
-
- var ajaxOptions = {
- data: {query: query, output: format},
- success: function( data ) {
- onSuccess.call( null, new RemoteSparqlServiceResult( data, format ) );
- },
- error: options.error,
- dataType: ajaxDataType( format )
- };
-
- return $.ajax( url, ajaxOptions );
- }
-} );
