Fix "dot-separated" paths by making paths type string[] (instead of string)

packages/core/src/actions/actions.ts

@@ -72,7 +72,7 @@ export type CoreActions =
 
 export interface UpdateAction {
   type: 'jsonforms/UPDATE';
-  path: string;
+  path: string[];
   updater(existingData?: any): any;
 }
 
@@ -167,7 +167,7 @@ export const setAjv = (ajv: AJV) => ({
 });
 
 export const update = (
-  path: string,
+  path: string[],
   updater: (existingData: any) => any
 ): UpdateAction => ({
   type: UPDATE_DATA,

packages/core/src/i18n/i18nUtil.ts

@@ -15,19 +15,18 @@ export const getI18nKeyPrefixBySchema = (
  * Transforms a given path to a prefix which can be used for i18n keys.
  * Returns 'root' for empty paths and removes array indices
  */
-export const transformPathToI18nPrefix = (path: string) => {
+export const transformPathToI18nPrefix = (path: string[]) => {
   return (
     path
-      ?.split('.')
-      .filter(segment => !/^\d+$/.test(segment))
+      ?.filter(segment => !/^\d+$/.test(segment))
       .join('.') || 'root'
   );
 };
 
 export const getI18nKeyPrefix = (
   schema: i18nJsonSchema | undefined,
   uischema: UISchemaElement | undefined,
-  path: string | undefined
+  path: string[] | undefined
 ): string | undefined => {
   return (
     getI18nKeyPrefixBySchema(schema, uischema) ??
@@ -38,7 +37,7 @@ export const getI18nKeyPrefix = (
 export const getI18nKey = (
   schema: i18nJsonSchema | undefined,
   uischema: UISchemaElement | undefined,
-  path: string | undefined,
+  path: string[] | undefined,
   key: string
 ): string | undefined => {
   return `${getI18nKeyPrefix(schema, uischema, path)}.${key}`;
@@ -89,7 +88,7 @@ export const getCombinedErrorMessage = (
   t: Translator,
   schema?: i18nJsonSchema,
   uischema?: UISchemaElement,
-  path?: string
+  path?: string[],
 ) => {
   if (errors.length > 0 && t) {
     // check whether there is a special message which overwrites all others

packages/core/src/reducers/core.ts

@@ -39,12 +39,12 @@ import {
   SET_SCHEMA,
   SET_UISCHEMA,
   SET_VALIDATION_MODE,
+  UPDATE_CORE,
   UPDATE_DATA,
   UPDATE_ERRORS,
-  UPDATE_CORE,
   UpdateCoreAction
 } from '../actions';
-import { createAjv, Reducer } from '../util';
+import { pathsAreEqual, createAjv, pathStartsWith, Reducer } from '../util';
 import { JsonSchema, UISchemaElement } from '../models';
 
 export const validate = (validator: ValidateFunction | undefined, data: any): ErrorObject[] => {
@@ -184,7 +184,7 @@ export const coreReducer: Reducer<JsonFormsCore, CoreActions> = (
         state.ajv !== thisAjv ||
         state.errors !== errors ||
         state.validator !== validator ||
-        state.validationMode !== validationMode
+        state.validationMode !== validationMode;
       return stateChanged
         ? {
             ...state,
@@ -230,7 +230,8 @@ export const coreReducer: Reducer<JsonFormsCore, CoreActions> = (
     case UPDATE_DATA: {
       if (action.path === undefined || action.path === null) {
         return state;
-      } else if (action.path === '') {
+      }
+      if (action.path.length === 0) {
         // empty path is ok
         const result = action.updater(cloneDeep(state.data));
         const errors = validate(state.validator, result);
@@ -317,32 +318,29 @@ export const getControlPath = (error: ErrorObject) => {
     return dataPath.replace(/\//g, '.').substr(1);
   }
   // dataPath was renamed to instancePath in AJV v8
-  var controlPath: string = error.instancePath;
+  const controlPath = error.instancePath
+    .replace(/^\//, '') // remove leading slash
+    .split('/'); // convert to string[]
 
-  // change '/' chars to '.'
-  controlPath = controlPath.replace(/\//g, '.');
-
   const invalidProperty = getInvalidProperty(error);
-  if (invalidProperty !== undefined && !controlPath.endsWith(invalidProperty)) {
-    controlPath = `${controlPath}.${invalidProperty}`;
+  if (invalidProperty !== undefined && controlPath.at(-1) !== invalidProperty) {
+    controlPath.push(invalidProperty);
   }
-
-  // remove '.' chars at the beginning of paths
-  controlPath = controlPath.replace(/^./, '');
+
   return controlPath;
-}
+};
 
 export const errorsAt = (
-  instancePath: string,
+  instancePath: string[],
   schema: JsonSchema,
-  matchPath: (path: string) => boolean
+  matchPath: (path: string[]) => boolean
 ) => (errors: ErrorObject[]): ErrorObject[] => {
   // Get data paths of oneOf and anyOf errors to later determine whether an error occurred inside a subschema of oneOf or anyOf.
   const combinatorPaths = filter(
     errors,
     error => error.keyword === 'oneOf' || error.keyword === 'anyOf'
     ).map(error => getControlPath(error));
-    
+
     return filter(errors, error => {
       // Filter errors that match any keyword that we don't want to show in the UI
       if (filteredErrorKeywords.indexOf(error.keyword) !== -1) {
@@ -360,8 +358,8 @@ export const errorsAt = (
     // because the parent schema can never match the property schema (e.g. for 'required' checks).
     const parentSchema: JsonSchema | undefined = error.parentSchema;
     if (result && !isObjectSchema(parentSchema)
-      && combinatorPaths.findIndex(p => instancePath.startsWith(p)) !== -1) {
-      result = result && isEqual(parentSchema, schema);
+      && combinatorPaths.some(combinatorPath => pathStartsWith(instancePath, combinatorPath))) {
+      result = isEqual(parentSchema, schema);
     }
     return result;
   });
@@ -372,7 +370,7 @@ export const errorsAt = (
  */
 const isObjectSchema = (schema?: JsonSchema): boolean => {
   return schema?.type === 'object' || !!schema?.properties;
-}
+};
 
 /**
  * The error-type of an AJV error is defined by its `keyword` property.
@@ -388,13 +386,16 @@ const isObjectSchema = (schema?: JsonSchema): boolean => {
 const filteredErrorKeywords = ['additionalProperties', 'allOf', 'anyOf', 'oneOf'];
 
 const getErrorsAt = (
-  instancePath: string,
+  instancePath: string[],
   schema: JsonSchema,
-  matchPath: (path: string) => boolean
+  matchPath: (path: string[]) => boolean
 ) => (state: JsonFormsCore): ErrorObject[] =>
-  errorsAt(instancePath, schema, matchPath)(state.validationMode === 'ValidateAndHide' ? [] : state.errors);
+  errorsAt(instancePath, schema, matchPath)(
+    state.validationMode === 'ValidateAndHide' ? [] : state.errors
+  );
+
+export const errorAt = (instancePath: string[], schema: JsonSchema) =>
+  getErrorsAt(instancePath, schema, path => pathsAreEqual(path, instancePath));
 
-export const errorAt = (instancePath: string, schema: JsonSchema) =>
-  getErrorsAt(instancePath, schema, path => path === instancePath);
-export const subErrorsAt = (instancePath: string, schema: JsonSchema) =>
-  getErrorsAt(instancePath, schema, path => path.startsWith(instancePath));
+export const subErrorsAt = (instancePath: string[], schema: JsonSchema) =>
+  getErrorsAt(instancePath, schema, path => pathStartsWith(path, instancePath));

packages/core/src/reducers/reducers.ts

@@ -74,7 +74,7 @@ export const findUISchema = (
   uischemas: JsonFormsUISchemaRegistryEntry[],
   schema: JsonSchema,
   schemaPath: string,
-  path: string,
+  path: string[],
   fallbackLayoutType = 'VerticalLayout',
   control?: ControlElement,
   rootSchema?: JsonSchema
@@ -104,13 +104,13 @@ export const findUISchema = (
   return uiSchema;
 };
 
-export const getErrorAt = (instancePath: string, schema: JsonSchema) => (
+export const getErrorAt = (instancePath: string[], schema: JsonSchema) => (
   state: JsonFormsState
 ) => {
   return errorAt(instancePath, schema)(state.jsonforms.core);
 };
 
-export const getSubErrorsAt = (instancePath: string, schema: JsonSchema) => (
+export const getSubErrorsAt = (instancePath: string[], schema: JsonSchema) => (
   state: JsonFormsState
 ) => subErrorsAt(instancePath, schema)(state.jsonforms.core);
 

packages/core/src/reducers/uischemas.ts

@@ -33,7 +33,7 @@ import { Reducer } from '../util';
 export type UISchemaTester = (
   schema: JsonSchema,
   schemaPath: string,
-  path: string
+  path: string[],
 ) => number;
 
 export interface JsonFormsUISchemaRegistryEntry {
@@ -64,7 +64,7 @@ export const findMatchingUISchema = (
 ) => (
   jsonSchema: JsonSchema,
   schemaPath: string,
-  path: string
+  path: string[],
 ): UISchemaElement => {
   const match = maxBy(state, entry =>
     entry.tester(jsonSchema, schemaPath, path)

packages/core/src/util/combinators.ts

@@ -70,7 +70,7 @@ export const createCombinatorRenderInfos = (
   rootSchema: JsonSchema,
   keyword: CombinatorKeyword,
   control: ControlElement,
-  path: string,
+  path: string[],
   uischemas: JsonFormsUISchemaRegistryEntry[]
 ): CombinatorSubSchemaRenderInfo[] =>
   combinatorSubSchemas.map((subSchema, subSchemaIndex) => ({

packages/core/src/util/path.ts

@@ -27,19 +27,8 @@ import isEmpty from 'lodash/isEmpty';
 import range from 'lodash/range';
 import { Scopable } from '../models';
 
-export const compose = (path1: string, path2: string) => {
-  let p1 = path1;
-  if (!isEmpty(path1) && !isEmpty(path2) && !path2.startsWith('[')) {
-    p1 = path1 + '.';
-  }
-
-  if (isEmpty(p1)) {
-    return path2;
-  } else if (isEmpty(path2)) {
-    return p1;
-  } else {
-    return `${p1}${path2}`;
-  }
+export const compose = (path1: string[], path2: string[] | string) => {
+  return path1?.concat(path2 ?? []);
 };
 
 export { compose as composePaths };
@@ -66,25 +55,47 @@ export const toDataPathSegments = (schemaPath: string): string[] => {
   const startIndex = startFromRoot ? 2 : 1;
   return range(startIndex, segments.length, 2).map(idx => segments[idx]);
 };
-
+// TODO: `toDataPathSegments` and `toDataPath` are the same!
 /**
  * Remove all schema-specific keywords (e.g. 'properties') from a given path.
  * @example
- * toDataPath('#/properties/foo/properties/bar') === '#/foo/bar')
+ * toDataPath('#/properties/foo/properties/bar') === ['foo', 'bar'])
  *
  * @param {string} schemaPath the schema path to be converted
- * @returns {string} the path without schema-specific keywords
+ * @returns {string[]} the path without schema-specific keywords
  */
-export const toDataPath = (schemaPath: string): string => {
-  return toDataPathSegments(schemaPath).join('.');
-};
+export const toDataPath = (schemaPath: string): string[] => toDataPathSegments(schemaPath);
 
-export const composeWithUi = (scopableUi: Scopable, path: string): string => {
+export const composeWithUi = (scopableUi: Scopable, path: string[]): string[] => {
   const segments = toDataPathSegments(scopableUi.scope);
 
   if (isEmpty(segments) && path === undefined) {
-    return '';
+    return [];
   }
 
-  return isEmpty(segments) ? path : compose(path, segments.join('.'));
+  return isEmpty(segments) ? path : compose(path, segments);
 };
+
+/**
+ * Check if two paths are equal (section by section)
+ */
+export const pathsAreEqual = (path1: string[], path2: string[]) =>
+  path2.length === path1.length && path2.every((section, i) => section === path1[i]);
+
+/**
+ * Check if a path starts with another path (`subPath`)
+ */
+export const pathStartsWith = (path: string[], subPath: string[]) =>
+  subPath.length <= path.length && subPath.every((section, i) => section === path[i]);
+
+/**
+ * Convert path `array` to a `string`, injectively (in a reversible way)
+ */
+export const stringifyPath = (path: string[]) =>
+  path.map(segment => ajvInstancePathEncoder(segment)).join('/');
+
+export const ajvInstancePathEncoder = (pathSegment: string) =>
+  pathSegment.replace(/[~\/]/g, match => match === '~' ? '~0' : '~1');
+
+export const ajvInstancePathDecoder = (pathSegment: string) =>
+  pathSegment.replace(/~0|~1/g, match => match === '~0' ? '~' : '/');