为rowStore增加了mergeMultipleResults接口

lib/types/RowStore.d.ts

@@ -19,4 +19,5 @@ export declare abstract class RowStore<ED extends EntityDict, Cxt extends Contex
     abstract rollback(txnId: string): Promise<void>;
     getSchema(): StorageSchema<ED>;
     mergeOperationResult(result: OperationResult<ED>, toBeMerged: OperationResult<ED>): void;
+    mergeMultipleResults(toBeMerged: OperationResult<ED>[]): OperationResult<ED>;
 }

lib/types/RowStore.js

@@ -22,6 +22,12 @@ var RowStore = /** @class */ (function () {
             }
         }
     };
+    RowStore.prototype.mergeMultipleResults = function (toBeMerged) {
+        var _this = this;
+        var result = {};
+        toBeMerged.forEach(function (ele) { return _this.mergeOperationResult(result, ele); });
+        return result;
+    };
     RowStore.$$LEVEL = 'store';
     RowStore.$$CODES = {
         primaryKeyConfilict: [1, '主键重复'],

src/types/RowStore.ts

@@ -68,4 +68,11 @@ export abstract class RowStore<ED extends EntityDict, Cxt extends Context<ED>> {
         }
     }
 
+    mergeMultipleResults(toBeMerged: OperationResult<ED>[]) {
+        const result: OperationResult<ED> = {};
+        toBeMerged.forEach(
+            ele => this.mergeOperationResult(result, ele)
+        );
+        return result;
+    }
 }