Squashed 'vendor/ruvector/' content from commit b64c2172

git-subtree-dir: vendor/ruvector
git-subtree-split: b64c21726f2bb37286d9ee36a7869fef60cc6900

crates/rvlite/examples/dashboard/scripts/debug-sparql.mjs

@@ -0,0 +1,74 @@
+#!/usr/bin/env node
+/**
+ * Debug SPARQL execution to understand why results are empty
+ */
+
+import { readFile } from 'fs/promises';
+import { fileURLToPath } from 'url';
+import { dirname, join } from 'path';
+
+const __dirname = dirname(fileURLToPath(import.meta.url));
+
+async function test() {
+  console.log('=== Debug SPARQL Execution ===\n');
+
+  // Load WASM
+  const wasmPath = join(__dirname, '../public/pkg/rvlite_bg.wasm');
+  const wasmBytes = await readFile(wasmPath);
+  const rvliteModule = await import('../public/pkg/rvlite.js');
+  const { default: initRvLite, RvLite, RvLiteConfig } = rvliteModule;
+  await initRvLite(wasmBytes);
+
+  const config = new RvLiteConfig(384);
+  const db = new RvLite(config);
+  console.log('✓ WASM initialized');
+
+  // Add triples
+  console.log('\n=== Adding Triples ===');
+  const triples = [
+    ['<http://example.org/Alice>', '<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>', '<http://example.org/Person>'],
+    ['<http://example.org/Alice>', '<http://example.org/name>', '"Alice"'],
+    ['<http://example.org/Bob>', '<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>', '<http://example.org/Person>'],
+    ['<http://example.org/Bob>', '<http://example.org/name>', '"Bob"'],
+    ['<http://example.org/Alice>', '<http://example.org/knows>', '<http://example.org/Bob>'],
+  ];
+
+  for (const [s, p, o] of triples) {
+    try {
+      db.add_triple(s, p, o);
+      console.log(`  Added: ${s} ${p} ${o}`);
+    } catch (e) {
+      console.log(`  ERROR adding triple: ${e.message}`);
+    }
+  }
+  console.log(`Triple count: ${db.triple_count()}`);
+
+  // Test queries with full debug output
+  console.log('\n=== Testing SPARQL Queries ===');
+
+  const queries = [
+    // Simple SELECT with variable predicate
+    "SELECT ?s ?p ?o WHERE { ?s ?p ?o }",
+    // SELECT with specific predicate
+    "SELECT ?s WHERE { ?s <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://example.org/Person> }",
+    // SELECT with specific predicate (no angle brackets in predicate)
+    "SELECT ?s WHERE { ?s <http://example.org/knows> ?o }",
+    // ASK query
+    "ASK { <http://example.org/Alice> <http://example.org/knows> <http://example.org/Bob> }",
+  ];
+
+  for (const query of queries) {
+    console.log(`\nQuery: ${query}`);
+    try {
+      const result = db.sparql(query);
+      console.log('Result type:', typeof result);
+      console.log('Result:', JSON.stringify(result, null, 2));
+    } catch (e) {
+      console.log('ERROR:', e.message || e);
+    }
+  }
+
+  db.free();
+}
+
+test().catch(console.error);