Add filter, add READMES

backend_go/selection_query.go

@@ -0,0 +1,33 @@
+package main
+
+import (
+	"context"
+	"fmt"
+
+	selectionqueries "visualizador_instanciados/backend_go/selection_queries"
+)
+
+func runSelectionQuery(
+	ctx context.Context,
+	sparql *AnzoGraphClient,
+	snapshot GraphResponse,
+	queryID string,
+	selectedIDs []int,
+	includeBNodes bool,
+) ([]int, error) {
+	def, ok := selectionqueries.Get(queryID)
+	if !ok {
+		return nil, fmt.Errorf("unknown query_id: %s", queryID)
+	}
+
+	idToNode := make(map[int]selectionqueries.NodeRef, len(snapshot.Nodes))
+	keyToID := make(map[string]int, len(snapshot.Nodes))
+	for _, n := range snapshot.Nodes {
+		nr := selectionqueries.NodeRef{ID: n.ID, TermType: n.TermType, IRI: n.IRI}
+		idToNode[n.ID] = nr
+		keyToID[n.TermType+"\x00"+n.IRI] = n.ID
+	}
+
+	return def.Run(ctx, sparql, selectionqueries.Index{IDToNode: idToNode, KeyToID: keyToID}, selectedIDs, includeBNodes)
+}
+