mongo perspective fixes

packages/web/src/utility/usePerspectiveDataPatterns.ts

@@ -11,6 +11,38 @@ import {
 import { PerspectiveDataLoader } from 'dbgate-datalib/lib/PerspectiveDataLoader';
 import { writable, Readable } from 'svelte/store';
 
+export function getPerspectiveDataPatternsFromCache(
+  databaseConfig: PerspectiveDatabaseConfig,
+  config: PerspectiveConfig,
+  cache: PerspectiveCache,
+  dbInfos: MultipleDatabaseInfo
+): PerspectiveDataPatternDict {
+  const res = {};
+
+  for (const node of config.nodes) {
+    const conid = node.conid || databaseConfig.conid;
+    const database = node.database || databaseConfig.database;
+    const { schemaName, pureName } = node;
+
+    const cached = cache.dataPatterns.find(
+      x => x.conid == conid && x.database == database && x.schemaName == schemaName && x.pureName == pureName
+    );
+    if (cached) {
+      res[node.designerId] = cached;
+      continue;
+    }
+
+    const db = dbInfos?.[conid]?.[database];
+
+    if (!db) continue;
+
+    const collection = db.collections?.find(x => x.pureName == pureName && x.schemaName == schemaName);
+    if (!collection) continue;
+  }
+
+  return res;
+}
+
 export async function getPerspectiveDataPatterns(
   databaseConfig: PerspectiveDatabaseConfig,
   config: PerspectiveConfig,
@@ -45,6 +77,10 @@ export async function getPerspectiveDataPatterns(
       engineType: 'docdb',
       pureName,
       orderBy: [],
+      range: {
+        offset: 0,
+        limit: 10,
+      },
     };
     const rows = await dataLoader.loadData(props);
     const pattern = analyseDataPattern(
@@ -71,7 +107,9 @@ export function usePerspectiveDataPatterns(
   dbInfos: MultipleDatabaseInfo,
   dataLoader: PerspectiveDataLoader
 ): Readable<PerspectiveDataPatternDict> {
-  const res = writable({});
-  getPerspectiveDataPatterns(databaseConfig, config, cache, dbInfos, dataLoader).then(value => res.set(value));
+  const cached = getPerspectiveDataPatternsFromCache(databaseConfig, config, cache, dbInfos);
+  const promise = getPerspectiveDataPatterns(databaseConfig, config, cache, dbInfos, dataLoader);
+  const res = writable(cached);
+  promise.then(value => res.set(value));
   return res;
 }