[ML] Transforms: Data grid fixes. (#59538)

- Fixes data grid schemas to avoid crashing the page.
- Fixes date formatting.
- Uses data grid for preview table in transform list.

x-pack/plugins/transform/common/utils/object_utils.test.ts

@@ -0,0 +1,70 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License;
+ * you may not use this file except in compliance with the Elastic License.
+ */
+
+import { getNestedProperty } from './object_utils';
+
+describe('object_utils', () => {
+  test('getNestedProperty()', () => {
+    const testObj = {
+      the: {
+        nested: {
+          value: 'the-nested-value',
+        },
+      },
+    };
+
+    const falseyObj = {
+      the: {
+        nested: {
+          value: false,
+        },
+        other_nested: {
+          value: 0,
+        },
+      },
+    };
+
+    const test1 = getNestedProperty(testObj, 'the');
+    expect(typeof test1).toBe('object');
+    expect(Object.keys(test1)).toStrictEqual(['nested']);
+
+    const test2 = getNestedProperty(testObj, 'the$');
+    expect(typeof test2).toBe('undefined');
+
+    const test3 = getNestedProperty(testObj, 'the$', 'the-default-value');
+    expect(typeof test3).toBe('string');
+    expect(test3).toBe('the-default-value');
+
+    const test4 = getNestedProperty(testObj, 'the.neSted');
+    expect(typeof test4).toBe('undefined');
+
+    const test5 = getNestedProperty(testObj, 'the.nested');
+    expect(typeof test5).toBe('object');
+    expect(Object.keys(test5)).toStrictEqual(['value']);
+
+    const test6 = getNestedProperty(testObj, 'the.nested.vaLue');
+    expect(typeof test6).toBe('undefined');
+
+    const test7 = getNestedProperty(testObj, 'the.nested.value');
+    expect(typeof test7).toBe('string');
+    expect(test7).toBe('the-nested-value');
+
+    const test8 = getNestedProperty(testObj, 'the.nested.value.doesntExist');
+    expect(typeof test8).toBe('undefined');
+
+    const test9 = getNestedProperty(testObj, 'the.nested.value.doesntExist', 'the-default-value');
+    expect(typeof test9).toBe('string');
+    expect(test9).toBe('the-default-value');
+
+    const test10 = getNestedProperty(falseyObj, 'the.nested.value');
+    expect(typeof test10).toBe('boolean');
+    expect(test10).toBe(false);
+
+    const test11 = getNestedProperty(falseyObj, 'the.other_nested.value');
+    expect(typeof test11).toBe('number');
+    expect(test11).toBe(0);
+  });
+});

x-pack/plugins/transform/common/utils/object_utils.ts

@@ -11,5 +11,9 @@ export const getNestedProperty = (
   accessor: string,
   defaultValue?: any
 ) => {
-  return accessor.split('.').reduce((o, i) => o?.[i], obj) || defaultValue;
+  const value = accessor.split('.').reduce((o, i) => o?.[i], obj);
+
+  if (value === undefined) return defaultValue;
+
+  return value;
 };

x-pack/plugins/transform/public/app/components/pivot_preview/common.test.ts

@@ -0,0 +1,117 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License;
+ * you may not use this file except in compliance with the Elastic License.
+ */
+
+import { EuiDataGridSorting } from '@elastic/eui';
+
+import {
+  getPreviewRequestBody,
+  PivotAggsConfig,
+  PivotGroupByConfig,
+  PIVOT_SUPPORTED_AGGS,
+  PIVOT_SUPPORTED_GROUP_BY_AGGS,
+  SimpleQuery,
+} from '../../common';
+
+import { multiColumnSortFactory, getPivotPreviewDevConsoleStatement } from './common';
+
+describe('Transform: Define Pivot Common', () => {
+  test('multiColumnSortFactory()', () => {
+    const data = [
+      { s: 'a', n: 1 },
+      { s: 'a', n: 2 },
+      { s: 'b', n: 3 },
+      { s: 'b', n: 4 },
+    ];
+
+    const sortingColumns1: EuiDataGridSorting['columns'] = [{ id: 's', direction: 'desc' }];
+    const multiColumnSort1 = multiColumnSortFactory(sortingColumns1);
+    data.sort(multiColumnSort1);
+
+    expect(data).toStrictEqual([
+      { s: 'b', n: 3 },
+      { s: 'b', n: 4 },
+      { s: 'a', n: 1 },
+      { s: 'a', n: 2 },
+    ]);
+
+    const sortingColumns2: EuiDataGridSorting['columns'] = [
+      { id: 's', direction: 'asc' },
+      { id: 'n', direction: 'desc' },
+    ];
+    const multiColumnSort2 = multiColumnSortFactory(sortingColumns2);
+    data.sort(multiColumnSort2);
+
+    expect(data).toStrictEqual([
+      { s: 'a', n: 2 },
+      { s: 'a', n: 1 },
+      { s: 'b', n: 4 },
+      { s: 'b', n: 3 },
+    ]);
+
+    const sortingColumns3: EuiDataGridSorting['columns'] = [
+      { id: 'n', direction: 'desc' },
+      { id: 's', direction: 'desc' },
+    ];
+    const multiColumnSort3 = multiColumnSortFactory(sortingColumns3);
+    data.sort(multiColumnSort3);
+
+    expect(data).toStrictEqual([
+      { s: 'b', n: 4 },
+      { s: 'b', n: 3 },
+      { s: 'a', n: 2 },
+      { s: 'a', n: 1 },
+    ]);
+  });
+
+  test('getPivotPreviewDevConsoleStatement()', () => {
+    const query: SimpleQuery = {
+      query_string: {
+        query: '*',
+        default_operator: 'AND',
+      },
+    };
+    const groupBy: PivotGroupByConfig = {
+      agg: PIVOT_SUPPORTED_GROUP_BY_AGGS.TERMS,
+      field: 'the-group-by-field',
+      aggName: 'the-group-by-agg-name',
+      dropDownName: 'the-group-by-drop-down-name',
+    };
+    const agg: PivotAggsConfig = {
+      agg: PIVOT_SUPPORTED_AGGS.AVG,
+      field: 'the-agg-field',
+      aggName: 'the-agg-agg-name',
+      dropDownName: 'the-agg-drop-down-name',
+    };
+    const request = getPreviewRequestBody('the-index-pattern-title', query, [groupBy], [agg]);
+    const pivotPreviewDevConsoleStatement = getPivotPreviewDevConsoleStatement(request);
+
+    expect(pivotPreviewDevConsoleStatement).toBe(`POST _transform/_preview
+{
+  "source": {
+    "index": [
+      "the-index-pattern-title"
+    ]
+  },
+  "pivot": {
+    "group_by": {
+      "the-group-by-agg-name": {
+        "terms": {
+          "field": "the-group-by-field"
+        }
+      }
+    },
+    "aggregations": {
+      "the-agg-agg-name": {
+        "avg": {
+          "field": "the-agg-field"
+        }
+      }
+    }
+  }
+}
+`);
+  });
+});

x-pack/plugins/transform/public/app/components/pivot_preview/common.ts

@@ -0,0 +1,60 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License;
+ * you may not use this file except in compliance with the Elastic License.
+ */
+
+import { EuiDataGridSorting } from '@elastic/eui';
+
+import { getNestedProperty } from '../../../../common/utils/object_utils';
+
+import { PreviewRequestBody } from '../../common';
+
+/**
+ * Helper to sort an array of objects based on an EuiDataGrid sorting configuration.
+ * `sortFn()` is recursive to support sorting on multiple columns.
+ *
+ * @param sortingColumns - The EUI data grid sorting configuration
+ * @returns The sorting function which can be used with an array's sort() function.
+ */
+export const multiColumnSortFactory = (sortingColumns: EuiDataGridSorting['columns']) => {
+  const isString = (arg: any): arg is string => {
+    return typeof arg === 'string';
+  };
+
+  const sortFn = (a: any, b: any, sortingColumnIndex = 0): number => {
+    const sort = sortingColumns[sortingColumnIndex];
+    const aValue = getNestedProperty(a, sort.id, null);
+    const bValue = getNestedProperty(b, sort.id, null);
+
+    if (typeof aValue === 'number' && typeof bValue === 'number') {
+      if (aValue < bValue) {
+        return sort.direction === 'asc' ? -1 : 1;
+      }
+      if (aValue > bValue) {
+        return sort.direction === 'asc' ? 1 : -1;
+      }
+    }
+
+    if (isString(aValue) && isString(bValue)) {
+      if (aValue.localeCompare(bValue) === -1) {
+        return sort.direction === 'asc' ? -1 : 1;
+      }
+      if (aValue.localeCompare(bValue) === 1) {
+        return sort.direction === 'asc' ? 1 : -1;
+      }
+    }
+
+    if (sortingColumnIndex + 1 < sortingColumns.length) {
+      return sortFn(a, b, sortingColumnIndex + 1);
+    }
+
+    return 0;
+  };
+
+  return sortFn;
+};
+
+export const getPivotPreviewDevConsoleStatement = (request: PreviewRequestBody) => {
+  return `POST _transform/_preview\n${JSON.stringify(request, null, 2)}\n`;
+};

x-pack/plugins/transform/public/app/components/pivot_preview/index.ts

@@ -0,0 +1,7 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License;
+ * you may not use this file except in compliance with the Elastic License.
+ */
+
+export { PivotPreview } from './pivot_preview';

x-pack/plugins/transform/public/app/sections/create_transform/components/step_define/pivot_preview.test.tsx → x-pack/plugins/transform/public/app/components/pivot_preview/pivot_preview.test.tsx

@@ -8,20 +8,19 @@ import React from 'react';
 import { render, wait } from '@testing-library/react';
 import '@testing-library/jest-dom/extend-expect';
 
-import { Providers } from '../../../../app_dependencies.mock';
+import { Providers } from '../../app_dependencies.mock';
 import {
   getPivotQuery,
   PivotAggsConfig,
   PivotGroupByConfig,
   PIVOT_SUPPORTED_AGGS,
   PIVOT_SUPPORTED_GROUP_BY_AGGS,
-} from '../../../../common';
-import { SearchItems } from '../../../../hooks/use_search_items';
+} from '../../common';
 
 import { PivotPreview } from './pivot_preview';
 
 jest.mock('ui/new_platform');
-jest.mock('../../../../../shared_imports');
+jest.mock('../../../shared_imports');
 
 describe('Transform: <PivotPreview />', () => {
   // Using the async/await wait()/done() pattern to avoid act() errors.
@@ -42,10 +41,7 @@ describe('Transform: <PivotPreview />', () => {
     const props = {
       aggs: { 'the-agg-name': agg },
       groupBy: { 'the-group-by-name': groupBy },
-      indexPattern: {
-        title: 'the-index-pattern-title',
-        fields: [] as any[],
-      } as SearchItems['indexPattern'],
+      indexPatternTitle: 'the-index-pattern-title',
       query: getPivotQuery('the-query'),
     };