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es/store.js

@@ -569,11 +569,16 @@ export default class TreeStore extends CascadeStore {
             case '$length': {
                 // json中的数组长度查询
                 const length = value;
-                assert(typeof length === 'number');
                 return (row) => {
                     const data = path ? get(row, path) : row;
                     assert(data instanceof Array, '$length operator can only used on array attribute');
-                    return data.length === length;
+                    if (typeof length === 'number') {
+                        return data.length === length;
+                    }
+                    else {
+                        const op = Object.keys(length)[0];
+                        return this.translatePredicate(entity, length, op, length[op], option)(data);
+                    }
                 };
             }
             default: {

lib/store.js

@@ -571,11 +571,16 @@ class TreeStore extends CascadeStore_1.CascadeStore {
             case '$length': {
                 // json中的数组长度查询
                 const length = value;
-                (0, assert_1.assert)(typeof length === 'number');
                 return (row) => {
                     const data = path ? (0, lodash_1.get)(row, path) : row;
                     (0, assert_1.assert)(data instanceof Array, '$length operator can only used on array attribute');
-                    return data.length === length;
+                    if (typeof length === 'number') {
+                        return data.length === length;
+                    }
+                    else {
+                        const op = Object.keys(length)[0];
+                        return this.translatePredicate(entity, length, op, length[op], option)(data);
+                    }
                 };
             }
             default: {

src/store.ts

@@ -710,11 +710,16 @@ export default class TreeStore<ED extends EntityDict & BaseEntityDict> extends C
             case '$length': {
                 // json中的数组长度查询
                 const length = value;
-                assert (typeof length === 'number');
                 return (row) => {
                     const data = path ? get(row, path) : row;
                     assert(data instanceof Array, '$length operator can only used on array attribute');
-                    return data.length === length;
+                    if (typeof length === 'number') {
+                        return data.length === length;
+                    }
+                    else {
+                        const op = Object.keys(length)[0];
+                        return this.translatePredicate(entity, length, op, length[op], option)(data);
+                    }
                 }
             }
             default: {

test/test.ts

@@ -1317,7 +1317,6 @@ describe('基础测试', function () {
             }
         }, context, {});
 
-        
         const row12 = store.select('oper', {
             data: {
                 id: 1,
@@ -1335,6 +1334,26 @@ describe('基础测试', function () {
                 }
             }
         }, context, {});
+        
+        const row13 = store.select('oper', {
+            data: {
+                id: 1,
+                data: {
+                    name: 1,
+                    price: 1,
+                },
+            },
+            filter: {
+                id,
+                data: {
+                    price: {
+                        $length: {
+                            $gt: 3,
+                        },
+                    },
+                }
+            }
+        }, context, {});
         context.commit();
         assert(row.length === 1);
         assert(row2.length === 0);
@@ -1348,6 +1367,7 @@ describe('基础测试', function () {
         assert(row10.length === 1);
         assert(row11.length === 0);
         assert(row12.length === 1);
+        assert(row13.length === 0);
         // console.log(JSON.stringify(row7));
     });