Cache common result set names

This caches the common result set names and moves the common result set
names from the `SetComparisonsMessage` to the
`SetComparisonQueryInfoMessage`.

extensions/ql-vscode/src/common/interface-types.ts

@@ -356,6 +356,7 @@ export interface SetComparisonQueryInfoMessage {
     };
   };
   readonly databaseUri: string;
+  readonly commonResultSetNames: string[];
 }
 
 /**
@@ -363,7 +364,6 @@ export interface SetComparisonQueryInfoMessage {
  */
 export interface SetComparisonsMessage {
   readonly t: "setComparisons";
-  readonly commonResultSetNames: string[];
   readonly currentResultSetName: string;
   readonly result: RawQueryCompareResult | undefined;
   readonly message: string | undefined;

extensions/ql-vscode/src/compare/compare-view.ts

@@ -22,13 +22,18 @@ import {
 import { telemetryListener } from "../common/vscode/telemetry";
 import { redactableError } from "../common/errors";
 import { App } from "../common/app";
-import { findResultSetNames } from "./result-set-names";
+import {
+  findCommonResultSetNames,
+  findResultSetNames,
+} from "./result-set-names";
 
 interface ComparePair {
   from: CompletedLocalQueryInfo;
   fromSchemas: BQRSInfo;
   to: CompletedLocalQueryInfo;
   toSchemas: BQRSInfo;
+
+  commonResultSetNames: readonly string[];
 }
 
 export class CompareView extends AbstractWebview<
@@ -62,11 +67,17 @@ export class CompareView extends AbstractWebview<
       to.completedQuery.query.resultsPaths.resultsPath,
     );
 
+    const commonResultSetNames = await findCommonResultSetNames(
+      fromSchemas,
+      toSchemas,
+    );
+
     this.comparePair = {
       from,
       fromSchemas,
       to,
       toSchemas,
+      commonResultSetNames,
     };
 
     await this.postMessage({
@@ -87,6 +98,7 @@ export class CompareView extends AbstractWebview<
         },
       },
       databaseUri: to.initialInfo.databaseInfo.databaseUri,
+      commonResultSetNames,
     });
 
     await this.showResultsInternal(selectedResultSetName);
@@ -101,15 +113,11 @@ export class CompareView extends AbstractWebview<
     panel.reveal(undefined, true);
 
     await this.waitForPanelLoaded();
-    const {
-      commonResultSetNames,
-      currentResultSetDisplayName,
-      fromResultSet,
-      toResultSet,
-    } = await this.findResultSetsToCompare(
-      this.comparePair,
-      selectedResultSetName,
-    );
+    const { currentResultSetDisplayName, fromResultSet, toResultSet } =
+      await this.findResultSetsToCompare(
+        this.comparePair,
+        selectedResultSetName,
+      );
     if (currentResultSetDisplayName) {
       let result: RawQueryCompareResult | undefined;
       let message: string | undefined;
@@ -122,7 +130,6 @@ export class CompareView extends AbstractWebview<
       await this.postMessage({
         t: "setComparisons",
         result,
-        commonResultSetNames,
         currentResultSetName: currentResultSetDisplayName,
         message,
       });
@@ -192,15 +199,16 @@ export class CompareView extends AbstractWebview<
   }
 
   private async findResultSetsToCompare(
-    { from, fromSchemas, to, toSchemas }: ComparePair,
+    { from, fromSchemas, to, toSchemas, commonResultSetNames }: ComparePair,
     selectedResultSetName: string | undefined,
   ) {
-    const {
-      commonResultSetNames,
-      currentResultSetDisplayName,
-      fromResultSetName,
-      toResultSetName,
-    } = await findResultSetNames(fromSchemas, toSchemas, selectedResultSetName);
+    const { currentResultSetDisplayName, fromResultSetName, toResultSetName } =
+      await findResultSetNames(
+        fromSchemas,
+        toSchemas,
+        commonResultSetNames,
+        selectedResultSetName,
+      );
 
     const fromResultSet = await this.getResultSet(
       fromSchemas,
@@ -213,7 +221,6 @@ export class CompareView extends AbstractWebview<
       to.completedQuery.query.resultsPaths.resultsPath,
     );
     return {
-      commonResultSetNames,
       currentResultSetDisplayName,
       fromResultSet,
       toResultSet,

extensions/ql-vscode/src/compare/result-set-names.ts

@@ -1,17 +1,27 @@
 import { BQRSInfo } from "../common/bqrs-cli-types";
 
+export async function findCommonResultSetNames(
+  fromSchemas: BQRSInfo,
+  toSchemas: BQRSInfo,
+): Promise<string[]> {
+  const fromSchemaNames = fromSchemas["result-sets"].map(
+    (schema) => schema.name,
+  );
+  const toSchemaNames = toSchemas["result-sets"].map((schema) => schema.name);
+
+  return fromSchemaNames.filter((name) => toSchemaNames.includes(name));
+}
+
 export async function findResultSetNames(
   fromSchemas: BQRSInfo,
   toSchemas: BQRSInfo,
+  commonResultSetNames: readonly string[],
   selectedResultSetName: string | undefined,
 ) {
   const fromSchemaNames = fromSchemas["result-sets"].map(
     (schema) => schema.name,
   );
   const toSchemaNames = toSchemas["result-sets"].map((schema) => schema.name);
-  const commonResultSetNames = fromSchemaNames.filter((name) =>
-    toSchemaNames.includes(name),
-  );
 
   // Fall back on the default result set names if there are no common ones.
   const defaultFromResultSetName = fromSchemaNames.find((name) =>
@@ -35,7 +45,6 @@ export async function findResultSetNames(
   const toResultSetName = currentResultSetName || defaultToResultSetName!;
 
   return {
-    commonResultSetNames,
     currentResultSetDisplayName:
       currentResultSetName ||
       `${defaultFromResultSetName} <-> ${defaultToResultSetName}`,

extensions/ql-vscode/src/stories/compare/CompareTable.stories.tsx

@@ -32,10 +32,10 @@ CompareTable.args = {
       },
     },
     databaseUri: "file:///java",
+    commonResultSetNames: ["edges", "nodes", "subpaths", "#select"],
   },
   comparison: {
     t: "setComparisons",
-    commonResultSetNames: ["edges", "nodes", "subpaths", "#select"],
     currentResultSetName: "edges",
     result: {
       columns: [

extensions/ql-vscode/src/view/compare/Compare.tsx

@@ -75,7 +75,7 @@ export function Compare(_: Record<string, never>): JSX.Element {
         <Header>
           <HeaderTitle>Comparing:</HeaderTitle>
           <CompareSelector
-            availableResultSets={comparison.commonResultSetNames}
+            availableResultSets={queryInfo.commonResultSetNames}
             currentResultSetName={comparison.currentResultSetName}
             updateResultSet={(newResultSetName: string) =>
               vscode.postMessage({ t: "changeCompare", newResultSetName })