Client-side SPARQL query execution uses POST instead of GET

namedgraph · namedgraph · commit 1d6c07df8fec · 2026-02-28T15:19:27.000+01:00
XPath function optimizations
diff --git a/src/main/webapp/static/com/atomgraph/linkeddatahub/xsl/bootstrap/2.3.2/client/block.xsl b/src/main/webapp/static/com/atomgraph/linkeddatahub/xsl/bootstrap/2.3.2/client/block.xsl
@@ -445,8 +445,6 @@ exclude-result-prefixes="#all"
         <xsl:param name="ignored" as="item()?"/>
               
         <xsl:variable name="container" select="$context('container')" as="element()"/>
-
-        <xsl:message>ldh:hide-block-progress-bar</xsl:message>
         
         <!-- hide the progress bar -->
         <xsl:for-each select="$container/ancestor::div[contains-token(@class, 'span12')][contains-token(@class, 'progress')][contains-token(@class, 'active')]">
diff --git a/src/main/webapp/static/com/atomgraph/linkeddatahub/xsl/bootstrap/2.3.2/client/block/chart.xsl b/src/main/webapp/static/com/atomgraph/linkeddatahub/xsl/bootstrap/2.3.2/client/block/chart.xsl
@@ -776,18 +776,16 @@ exclude-result-prefixes="#all"
                         <xsl:variable name="service-uri" select="xs:anyURI(key('resources', $query-uri)/ldh:service/@rdf:resource)" as="xs:anyURI?"/>
                         <xsl:variable name="service" select="if ($service-uri) then key('resources', $service-uri, document(ac:build-uri(ac:document-uri($service-uri), map{ 'accept': 'application/rdf+xml' }))) else ()" as="element()?"/> <!-- TO-DO: refactor asynchronously -->
                         <xsl:variable name="endpoint" select="($service/sd:endpoint/@rdf:resource/xs:anyURI(.), sd:endpoint())[1]" as="xs:anyURI"/>
-                        <xsl:variable name="results-uri" select="ac:build-uri($endpoint, map{ 'query': $query-string })" as="xs:anyURI"/>
-                        <xsl:variable name="request-uri" select="ldh:href($results-uri, map{})" as="xs:anyURI"/>
+                        <xsl:variable name="request-uri" select="ldh:href($endpoint, map{})" as="xs:anyURI"/>
 
                         <!-- Mark query response as complete -->
                         <xsl:sequence select="ldh:update-progress-counter($context('cache'), $context, 'complete', ())"/>
 
-                        <xsl:variable name="request" select="map{ 'method': 'GET', 'href': $request-uri, 'headers': map{ 'Accept': 'application/sparql-results+xml,application/rdf+xml;q=0.9' } }" as="map(*)"/>
+                        <xsl:variable name="request" select="map{ 'method': 'POST', 'href': $request-uri, 'media-type': 'application/sparql-query', 'body': $query-string, 'headers': map{ 'Accept': 'application/sparql-results+xml,application/rdf+xml;q=0.9' } }" as="map(*)"/>
                         <xsl:sequence select="
                           map{
                             'request': $request,
                             'endpoint': $endpoint,
-                            'results-uri': $results-uri,
                             'block': $block,
                             'container': $container,
                             'chart-canvas-id': $canvas-id,
@@ -833,7 +831,6 @@ exclude-result-prefixes="#all"
         <xsl:variable name="response" select="$context('response')" as="map(*)"/>
         <xsl:variable name="block" select="$context('block')" as="element()"/>
         <xsl:variable name="container" select="$context('container')" as="element()"/>
-        <xsl:variable name="results-uri" select="$context('results-uri')" as="xs:anyURI"/>
         <xsl:variable name="chart-canvas-id" select="$context('chart-canvas-id')" as="xs:string"/>
         <xsl:variable name="chart-type" select="$context('chart-type')" as="xs:anyURI"/>
         <xsl:variable name="category" select="$context('category')" as="xs:string?"/>
diff --git a/src/main/webapp/static/com/atomgraph/linkeddatahub/xsl/bootstrap/2.3.2/client/block/query.xsl b/src/main/webapp/static/com/atomgraph/linkeddatahub/xsl/bootstrap/2.3.2/client/block/query.xsl
@@ -273,9 +273,8 @@ exclude-result-prefixes="#all"
         <xsl:variable name="container" select="$block" as="element()"/> <!-- since we're not in content mode -->
         <xsl:variable name="block-id" select="$block/@id" as="xs:string"/>
         <xsl:variable name="block-uri" select="if ($block/@about) then $block/@about else xs:anyURI(ac:absolute-path(ldh:base-uri(.)) || '#' || $block-id)" as="xs:anyURI"/>
-        <xsl:variable name="results-uri" select="ac:build-uri($endpoint, map{ 'query': $query-string })" as="xs:anyURI"/>
-        <xsl:variable name="request-uri" select="ldh:href($results-uri, map{})" as="xs:anyURI"/>
-        <xsl:variable name="request" select="map{ 'method': 'GET', 'href': $request-uri, 'headers': map{ 'Accept': 'application/sparql-results+xml,application/rdf+xml;q=0.9' } }" as="map(xs:string, item())"/>
+        <xsl:variable name="request-uri" select="ldh:href($endpoint, map{})" as="xs:anyURI"/>
+        <xsl:variable name="request" select="map{ 'method': 'POST', 'href': $request-uri, 'media-type': 'application/sparql-query', 'body': $query-string, 'headers': map{ 'Accept': 'application/sparql-results+xml,application/rdf+xml;q=0.9' } }" as="map(xs:string, item())"/>
         <xsl:variable name="results-container-id" select="$block-id || '-query-results'" as="xs:string"/>
         <xsl:variable name="results-container-class" select="'sparql-query-results'" as="xs:string"/>
         <xsl:variable name="results-container-about" select="xs:anyURI(ac:absolute-path(ldh:base-uri(.)) || '#' || $results-container-id)" as="xs:anyURI"/>
@@ -330,7 +329,6 @@ exclude-result-prefixes="#all"
             <ixsl:schedule-action http-request="$request">
                 <xsl:call-template name="onSPARQLResultsLoad">
                     <xsl:with-param name="endpoint" select="$endpoint"/>
-                    <xsl:with-param name="results-uri" select="$results-uri"/>
                     <xsl:with-param name="cache" select="$cache"/>
                     <xsl:with-param name="container" select="$container"/>
                     <xsl:with-param name="chart-canvas-id" select="$block-id || '-chart-canvas'"/>
@@ -507,19 +505,18 @@ exclude-result-prefixes="#all"
                 <xsl:message>Can only open DESCRIBE or CONSTRUCT query results</xsl:message>
             </xsl:when>
             <xsl:otherwise>
-                <xsl:variable name="results-uri" select="ac:build-uri($endpoint, map{ 'query': $query-string })" as="xs:anyURI"/>
-                <xsl:variable name="href" select="ldh:href($results-uri, map{})" as="xs:anyURI"/>
+                <xsl:variable name="href" select="ldh:href($endpoint, map{})" as="xs:anyURI"/>
 
                 <ixsl:set-style name="cursor" select="'progress'" object="ixsl:page()//body"/>
-                
+
                 <xsl:if test="ixsl:contains(ixsl:get(ixsl:window(), 'LinkedDataHub'), 'saxonController')">
                     <xsl:message>Aborting HTTP request that has already been sent</xsl:message>
                     <xsl:sequence select="ixsl:call(ixsl:get(ixsl:window(), 'LinkedDataHub.saxonController'), 'abort', [])"/>
                 </xsl:if>
                 <xsl:variable name="controller" select="ixsl:abort-controller()"/>
                 <ixsl:set-property name="saxonController" select="$controller" object="ixsl:get(ixsl:window(), 'LinkedDataHub')"/>
 
-                <xsl:variable name="request" select="map{ 'method': 'GET', 'href': $href, 'headers': map{ 'Accept': 'application/xhtml+xml' } }" as="map(*)"/>
+                <xsl:variable name="request" select="map{ 'method': 'POST', 'href': $href, 'media-type': 'application/sparql-query', 'body': $query-string, 'headers': map{ 'Accept': 'application/xhtml+xml' } }" as="map(*)"/>
                 <xsl:variable name="context" select="
                   map{
                     'request': $request,
@@ -541,7 +538,6 @@ exclude-result-prefixes="#all"
     <xsl:template name="onSPARQLResultsLoad">
         <xsl:context-item as="map(*)" use="required"/>
         <xsl:param name="container" as="element()"/>
-        <xsl:param name="results-uri" as="xs:anyURI"/>
         <xsl:param name="cache" as="item()"/>
         <xsl:param name="chart-canvas-id" as="xs:string"/>
         <xsl:param name="chart-type" select="xs:anyURI('&ac;Table')" as="xs:anyURI"/>
diff --git a/src/main/webapp/static/com/atomgraph/linkeddatahub/xsl/bootstrap/2.3.2/client/block/view.xsl b/src/main/webapp/static/com/atomgraph/linkeddatahub/xsl/bootstrap/2.3.2/client/block/view.xsl
@@ -380,9 +380,8 @@ exclude-result-prefixes="#all"
         <xsl:variable name="select-json-string" select="xml-to-json($select-xml)" as="xs:string"/>
         <xsl:variable name="select-json" select="ixsl:call(ixsl:get(ixsl:window(), 'JSON'), 'parse', [ $select-json-string ])"/>
         <xsl:variable name="query-string" select="ixsl:call(ixsl:call(ixsl:get(ixsl:get(ixsl:window(), 'SPARQLBuilder'), 'SelectBuilder'), 'fromQuery', [ $select-json ]), 'toString', [])" as="xs:string"/>
-        <xsl:variable name="results-uri" select="ac:build-uri($endpoint, map{ 'query': $query-string })" as="xs:anyURI"/>
-        <xsl:variable name="request-uri" select="ldh:href($results-uri, map{})" as="xs:anyURI"/>       
-        <xsl:variable name="request" select="map{ 'method': 'GET', 'href': $request-uri,  'headers': map { 'Accept': 'application/sparql-results+xml' } }" as="map(*)"/>
+        <xsl:variable name="request-uri" select="ldh:href($endpoint, map{})" as="xs:anyURI"/>
+        <xsl:variable name="request" select="map{ 'method': 'POST', 'href': $request-uri, 'media-type': 'application/sparql-query', 'body': $query-string, 'headers': map{ 'Accept': 'application/sparql-results+xml' } }" as="map(*)"/>
         <xsl:variable name="context" as="map(*)" select="
           map {
             'request': $request,
@@ -530,18 +529,17 @@ exclude-result-prefixes="#all"
         <xsl:variable name="query-json-string" select="xml-to-json($query-xml)" as="xs:string"/>
         <xsl:variable name="query-json" select="ixsl:call(ixsl:get(ixsl:window(), 'JSON'), 'parse', [ $query-json-string ])"/>
         <xsl:variable name="query-string" select="ixsl:call(ixsl:call(ixsl:get(ixsl:get(ixsl:window(), 'SPARQLBuilder'), 'SelectBuilder'), 'fromQuery', [ $query-json ]), 'toString', [])" as="xs:string"/>
-        <xsl:variable name="results-uri" select="ac:build-uri($endpoint, map{ 'query': $query-string })" as="xs:anyURI"/>
-        <xsl:variable name="request-uri" select="ldh:href($results-uri, map{})" as="xs:anyURI"/>
+        <xsl:variable name="request-uri" select="ldh:href($endpoint, map{})" as="xs:anyURI"/>
         <xsl:variable name="headers" as="map(xs:string, xs:string)">
             <xsl:map>
                 <xsl:map-entry key="'Accept'" select="'application/rdf+xml'"/>
-                
+
                 <xsl:if test="$refresh-content">
                     <xsl:map-entry key="'Cache-Control'" select="'no-cache, no-store, must-revalidate'"/>
                 </xsl:if>
             </xsl:map>
         </xsl:variable>
-        <xsl:variable name="request" select="map{ 'method': 'GET', 'href': $request-uri, 'headers': $headers }" as="map(*)"/>
+        <xsl:variable name="request" select="map{ 'method': 'POST', 'href': $request-uri, 'media-type': 'application/sparql-query', 'body': $query-string, 'headers': $headers }" as="map(*)"/>
         <xsl:sequence select="
           map{
             'request': $request,
@@ -1141,9 +1139,8 @@ exclude-result-prefixes="#all"
             <xsl:variable name="query-json-string" select="xml-to-json($select-xml)" as="xs:string"/>
             <xsl:variable name="query-json" select="ixsl:call(ixsl:get(ixsl:window(), 'JSON'), 'parse', [ $query-json-string ])"/>
             <xsl:variable name="query-string" select="ixsl:call(ixsl:call(ixsl:get(ixsl:get(ixsl:window(), 'SPARQLBuilder'), 'SelectBuilder'), 'fromQuery', [ $query-json ]), 'toString', [])" as="xs:string"/>
-            <xsl:variable name="results-uri" select="ac:build-uri($endpoint, map{ 'query': $query-string })" as="xs:anyURI"/>
-            <xsl:variable name="request-uri" select="ldh:href($results-uri, map{})" as="xs:anyURI"/>
-            <xsl:variable name="request" select="map{ 'method': 'GET', 'href': $request-uri, 'headers': map{ 'Accept': 'application/sparql-results+xml' } }" as="map(*)"/>
+            <xsl:variable name="request-uri" select="ldh:href($endpoint, map{})" as="xs:anyURI"/>
+            <xsl:variable name="request" select="map{ 'method': 'POST', 'href': $request-uri, 'media-type': 'application/sparql-query', 'body': $query-string, 'headers': map{ 'Accept': 'application/sparql-results+xml' } }" as="map(*)"/>
             <xsl:variable name="context" as="map(*)" select="
               map{
                 'request': $request,
@@ -1540,9 +1537,8 @@ exclude-result-prefixes="#all"
                     <xsl:variable name="select-json-string" select="xml-to-json($select-xml)" as="xs:string"/>
                     <xsl:variable name="select-json" select="ixsl:call(ixsl:get(ixsl:window(), 'JSON'), 'parse', [ $select-json-string ])"/>
                     <xsl:variable name="query-string" select="ixsl:call(ixsl:call(ixsl:get(ixsl:get(ixsl:window(), 'SPARQLBuilder'), 'SelectBuilder'), 'fromQuery', [ $select-json ]), 'toString', [])" as="xs:string"/>
-                    <xsl:variable name="results-uri" select="ac:build-uri($endpoint, map{ 'query': $query-string })" as="xs:anyURI"/>
-                    <xsl:variable name="request-uri" select="ldh:href($results-uri, map{})" as="xs:anyURI"/>
-                    <xsl:variable name="request" select="map{ 'method': 'GET', 'href': $request-uri, 'headers': map{ 'Accept': 'application/sparql-results+xml' } }" as="map(*)"/>
+                    <xsl:variable name="request-uri" select="ldh:href($endpoint, map{})" as="xs:anyURI"/>
+                    <xsl:variable name="request" select="map{ 'method': 'POST', 'href': $request-uri, 'media-type': 'application/sparql-query', 'body': $query-string, 'headers': map{ 'Accept': 'application/sparql-results+xml' } }" as="map(*)"/>
                     <xsl:variable name="context" as="map(*)" select="
                       map{
                         'request': $request,
diff --git a/src/main/webapp/static/com/atomgraph/linkeddatahub/xsl/bootstrap/2.3.2/client/functions.xsl b/src/main/webapp/static/com/atomgraph/linkeddatahub/xsl/bootstrap/2.3.2/client/functions.xsl
@@ -153,12 +153,10 @@ exclude-result-prefixes="#all"
             </xsl:value-of>
         </xsl:variable>
         
-        <xsl:variable name="js-statement" as="element()">
-            <root statement="new google.visualization.DataTable(JSON.parse(String.raw`{$json}`))"/>
-        </xsl:variable>
-        <xsl:sequence select="ixsl:eval(string($js-statement/@statement))"/>
+        <xsl:variable name="json-obj" select="ixsl:call(ixsl:get(ixsl:window(), 'JSON'), 'parse', [ $json ])"/>
+        <xsl:sequence select="ixsl:new('google.visualization.DataTable', [ $json-obj ])"/>
     </xsl:function>
-    
+
     <xsl:function name="ac:sparql-results-data-table">
         <xsl:param name="results" as="document-node()"/>
         <xsl:param name="category" as="xs:string?"/>
@@ -172,12 +170,10 @@ exclude-result-prefixes="#all"
             </xsl:value-of>
         </xsl:variable>
 
-        <xsl:variable name="js-statement" as="element()">
-            <root statement="new google.visualization.DataTable(JSON.parse(String.raw`{$json}`))"/>
-        </xsl:variable>
-        <xsl:sequence select="ixsl:eval(string($js-statement/@statement))"/>
+        <xsl:variable name="json-obj" select="ixsl:call(ixsl:get(ixsl:window(), 'JSON'), 'parse', [ $json ])"/>
+        <xsl:sequence select="ixsl:new('google.visualization.DataTable', [ $json-obj ])"/>
     </xsl:function>
-    
+
     <xsl:function name="ldh:parse-html" as="document-node()">
         <xsl:param name="string" as="xs:string"/>
         <xsl:param name="mime-type" as="xs:string"/>
