Support _deleted selector in RxDB queries

dist/types/rx-query-helper.d.ts

@@ -1,4 +1,4 @@
-import type { DeterministicSortComparator, FilledMangoQuery, MangoQuery, QueryMatcher, RxDocument, RxDocumentData, RxJsonSchema, RxQuery } from './types/index.d.ts';
+import type { DeterministicSortComparator, FilledMangoQuery, MangoQuery, MangoQuerySelector, QueryMatcher, RxDocument, RxDocumentData, RxJsonSchema, RxQuery } from './types/index.d.ts';
 /**
  * Normalize the query to ensure we have all fields set
  * and queries that represent the same query logic are detected as equal by the caching.
@@ -17,3 +17,9 @@ export declare function getSortComparator<RxDocType>(schema: RxJsonSchema<RxDocu
  */
 export declare function getQueryMatcher<RxDocType>(_schema: RxJsonSchema<RxDocType> | RxJsonSchema<RxDocumentData<RxDocType>>, query: FilledMangoQuery<RxDocType>): QueryMatcher<RxDocumentData<RxDocType>>;
 export declare function runQueryUpdateFunction<RxDocType, RxQueryResult>(rxQuery: RxQuery<RxDocType, RxQueryResult>, fn: (doc: RxDocument<RxDocType>) => Promise<RxDocument<RxDocType>>): Promise<RxQueryResult>;
+/**
+ * Checks if a given selector includes deleted documents.
+ * @param selector The MangoQuerySelector to check
+ * @returns True if the selector includes deleted documents, false otherwise
+ */
+export declare function selectorIncludesDeleted<RxDocType>(selector: MangoQuerySelector<RxDocType> | undefined): boolean;

dist/types/rx-query.d.ts

@@ -29,6 +29,7 @@ export declare class RxQueryBase<RxDocType, RxQueryResult, OrmMethods = {}, Reac
     constructor(op: RxQueryOP, mangoQuery: Readonly<MangoQuery<RxDocType>>, collection: RxCollection<RxDocType>, other?: any);
     get $(): BehaviorSubject<RxQueryResult>;
     get $$(): Reactivity;
+    get includesDeleted(): boolean;
     _latestChangeEvent: -1 | number;
     _lastExecStart: number;
     _lastExecEnd: number;

examples/vite-vanilla-ts/package.json

@@ -14,6 +14,7 @@
     "test:e2e": "testcafe chrome -e test/ --hostname localhost --selector-timeout 8000 --retry-test-pages"
   },
   "devDependencies": {
+    "@swc/core": "1.6.0",
     "async-test-util": "2.5.0",
     "concurrently": "8.2.2",
     "copyfiles": "2.4.1",

src/rx-query-helper.ts

@@ -5,7 +5,10 @@ import type {
     DeterministicSortComparator,
     FilledMangoQuery,
     MangoQuery,
+    MangoQueryOperators,
+    MangoQuerySelector,
     MangoQuerySortDirection,
+    PropertyType,
     QueryMatcher,
     RxDocument,
     RxDocumentData,
@@ -248,3 +251,61 @@ export async function runQueryUpdateFunction<RxDocType, RxQueryResult>(
         return result as any;
     }
 }
+
+/**
+ * Checks if a given selector includes deleted documents.
+ * @param selector The MangoQuerySelector to check
+ * @returns True if the selector includes deleted documents, false otherwise
+ */
+export function selectorIncludesDeleted<RxDocType>(
+    selector: MangoQuerySelector<RxDocType> | undefined
+): boolean {
+    if (!selector) {
+        return false;
+    }
+
+    const isTrue = (value: unknown): boolean =>
+        value === true ||
+        (typeof value === 'object' &&
+            value !== null &&
+            '$eq' in value &&
+            (value as MangoQueryOperators<boolean>).$eq === true);
+
+
+    const isNotFalse = (value: unknown): boolean =>
+        value === true ||
+        (typeof value === 'object' &&
+            value !== null &&
+            '$ne' in value &&
+            (value as MangoQueryOperators<boolean>).$ne === false);
+
+    const hasDeletedTrue = (
+        condition: MangoQuerySelector<RxDocType>
+    ): boolean =>
+        '_deleted' in condition &&
+        (isTrue(condition._deleted as PropertyType<RxDocType, '_deleted'>) ||
+            isNotFalse(
+                condition._deleted as PropertyType<RxDocType, '_deleted'>
+            ));
+
+    if ('_deleted' in selector) {
+        return (
+            isTrue(selector._deleted as PropertyType<RxDocType, '_deleted'>) ||
+            isNotFalse(selector._deleted as PropertyType<RxDocType, '_deleted'>)
+        );
+    }
+
+    if ('$or' in selector && Array.isArray(selector.$or)) {
+        return selector.$or.some(hasDeletedTrue);
+    }
+
+    if ('$and' in selector && Array.isArray(selector.$and)) {
+        return selector.$and.some(hasDeletedTrue);
+    }
+
+    if ('$nor' in selector && Array.isArray(selector.$nor)) {
+        return !selector.$nor.every((condition) => !hasDeletedTrue(condition));
+    }
+
+    return false;
+}

src/rx-query.ts

@@ -49,7 +49,8 @@ import {
     getQueryMatcher,
     getSortComparator,
     normalizeMangoQuery,
-    runQueryUpdateFunction
+    runQueryUpdateFunction,
+    selectorIncludesDeleted
 
 } from './rx-query-helper.ts';
 import { RxQuerySingleResult } from './rx-query-single-result.ts';
@@ -199,6 +200,10 @@ export class RxQueryBase<
         ) as any;
     }
 
+    get includesDeleted(): boolean {
+        return selectorIncludesDeleted(this.mangoQuery.selector);
+    }
+
     // stores the changeEvent-number of the last handled change-event
     public _latestChangeEvent: -1 | number = -1;
 
@@ -418,7 +423,14 @@ export class RxQueryBase<
             )
         };
 
-        (hookInput.mangoQuery.selector as any)._deleted = { $eq: false };
+        // Set _deleted to false if not explicitly set in selector
+        if (!this.includesDeleted) {
+            hookInput.mangoQuery.selector = {
+                ...hookInput.mangoQuery.selector,
+                _deleted: { $eq: false },
+            };
+        }
+
         if (hookInput.mangoQuery.index) {
             hookInput.mangoQuery.index.unshift('_deleted');
         }
@@ -816,7 +828,12 @@ async function __ensureEqual<RxDocType>(rxQuery: RxQueryBase<RxDocType, any>): P
                 }
             }
 
-            if (rxQuery.op === 'count') {
+            if (rxQuery.includesDeleted) {
+                return rxQuery._execOverDatabase().then((newResultData) => {
+                    rxQuery._setResultData(newResultData);
+                    return true;
+                });
+            } else if (rxQuery.op === 'count') {
                 // 'count' query
                 const previousCount = ensureNotFalsy(rxQuery._result).count;
                 let newCount = previousCount;