Add support for 'then/else' paths

packages/core/src/util/path.ts

@@ -57,9 +57,8 @@ export { compose as composePaths };
  */
 export const toDataPathSegments = (schemaPath: string): string[] => {
   const s = schemaPath
-    .replace(/anyOf\/[\d]\//g, '')
-    .replace(/allOf\/[\d]\//g, '')
-    .replace(/oneOf\/[\d]\//g, '');
+    .replace(/(anyOf|allOf|oneOf)\/[\d]\//g, '')
+    .replace(/(then|else)\//g, '');
   const segments = s.split('/');
 
   const decodedSegments = segments.map(decode);
@@ -79,7 +78,7 @@ export const toDataPathSegments = (schemaPath: string): string[] => {
  */
 export const toDataPath = (schemaPath: string): string => {
   return toDataPathSegments(schemaPath).join('.');
-};
+    };
 
 export const composeWithUi = (scopableUi: Scopable, path: string): string => {
   const segments = toDataPathSegments(scopableUi.scope);

packages/core/src/util/resolvers.ts

@@ -25,8 +25,8 @@
 
 import isEmpty from 'lodash/isEmpty';
 import get from 'lodash/get';
-import { JsonSchema } from '../models';
-import { decode, encode } from './path';
+import { JsonSchema, JsonSchema7 } from '../models';
+import { decode } from './path';
 
 /**
  * Map for storing refs and the respective schemas they are pointing to.
@@ -112,50 +112,67 @@ export const resolveSchema = (
   schema: JsonSchema,
   schemaPath: string,
   rootSchema: JsonSchema
+): JsonSchema => {
+  const segments = schemaPath?.split('/').map(decode);
+  return resolveSchemaWithSegments(schema, segments, rootSchema);
+};
+
+const resolveSchemaWithSegments = (
+  schema: JsonSchema,
+  pathSegments: string[],
+  rootSchema: JsonSchema
 ): JsonSchema => {
   if (isEmpty(schema)) {
     return undefined;
   }
-  const validPathSegments = schemaPath.split('/').map(decode);
-  let resultSchema = schema;
-  for (let i = 0; i < validPathSegments.length; i++) {
-    let pathSegment = validPathSegments[i];
-    resultSchema =
-      resultSchema === undefined || resultSchema.$ref === undefined
-        ? resultSchema
-        // use rootSchema as value for schema, since schema is undefined or a ref
-        : resolveSchema(rootSchema, resultSchema.$ref, rootSchema);
-    if (invalidSegment(pathSegment)) {
-      // skip invalid segments
-      continue;
-    }
-    let curSchema = get(resultSchema, pathSegment);
-    if (!curSchema) {
-      // resolving was not successful, check whether the scope omitted an oneOf, allOf or anyOf and resolve anyway
-      const schemas = [].concat(
-        resultSchema?.oneOf ?? [],
-        resultSchema?.allOf ?? [],
-        resultSchema?.anyOf ?? []
+
+  if (schema.$ref) {
+    schema = resolveSchema(rootSchema, schema.$ref, rootSchema);
+  }
+
+  if (!pathSegments || pathSegments.length === 0) {
+    return schema;
+  }
+
+  const [segment, ...remainingSegments] = pathSegments;
+
+  if (invalidSegment(segment)) {
+    return resolveSchemaWithSegments(schema, remainingSegments, rootSchema);
+  }
+
+  const singleSegmentResolveSchema = get(schema, segment);
+
+  const resolvedSchema = resolveSchemaWithSegments(singleSegmentResolveSchema, remainingSegments, rootSchema);
+  if (resolvedSchema) {
+    return resolvedSchema;
+  }
+
+  if (segment === 'properties' || segment === 'items') {
+    // Let's try to resolve the path, assuming oneOf/allOf/anyOf/then/else was omitted.
+    // We only do this when traversing an object or array as we want to avoid
+    // following a property which is named oneOf, allOf, anyOf, then or else.
+    let alternativeResolveResult = undefined;
+
+    const subSchemas = [].concat(
+      schema.oneOf ?? [],
+      schema.allOf ?? [],
+      schema.anyOf ?? [],
+      (schema as JsonSchema7).then ?? [],
+      (schema as JsonSchema7).else ?? []
+    );
+
+    for (const subSchema of subSchemas) {
+      alternativeResolveResult = resolveSchemaWithSegments(
+        subSchema,
+        [segment, ...remainingSegments],
+        rootSchema
       );
-      for (let item of schemas) {
-        curSchema = resolveSchema(item, validPathSegments.slice(i).map(encode).join('/'), rootSchema);
-        if (curSchema) {
-          break;
-        }
-      }
-      if (curSchema) {
-        // already resolved rest of the path
-        resultSchema = curSchema;
+      if (alternativeResolveResult) {
         break;
       }
     }
-    resultSchema = curSchema;
+    return alternativeResolveResult;
   }
 
-  if (resultSchema !== undefined && resultSchema.$ref !== undefined) {
-    return resolveSchema(rootSchema, resultSchema.$ref, rootSchema)
-      ?? schema;
-  }
-
-  return resultSchema;
-};
+  return undefined;
+}

packages/core/test/util/path.test.ts

@@ -46,12 +46,39 @@ test('toDataPath ', t => {
 test('toDataPath replace anyOf', t => {
   t.is(toDataPath('/anyOf/1/properties/foo/anyOf/1/properties/bar'), 'foo.bar');
 });
+test('toDataPath replace anyOf in combination with conditional schema compositions', t => {
+  t.is(toDataPath('/anyOf/1/then/properties/foo'), 'foo');
+});
+test('toDataPath replace multiple directly nested anyOf in combination with conditional schema compositions', t => {
+  t.is(toDataPath('/anyOf/1/then/anyOf/0/then/properties/foo'), 'foo');
+});
+test('toDataPath replace multiple nested properties with anyOf in combination with conditional schema compositions', t => {
+  t.is(toDataPath('/anyOf/1/properties/foo/anyOf/0/then/properties/bar'), 'foo.bar');
+});
 test('toDataPath replace allOf', t => {
   t.is(toDataPath('/allOf/1/properties/foo/allOf/1/properties/bar'), 'foo.bar');
 });
+test('toDataPath replace allOf in combination with conditional schema compositions', t => {
+  t.is(toDataPath('/allOf/1/then/properties/foo'), 'foo');
+});
+test('toDataPath replace multiple directly nested allOf in combination with conditional schema compositions', t => {
+  t.is(toDataPath('/allOf/1/then/allOf/0/then/properties/foo'), 'foo');
+});
+test('toDataPath replace multiple nested properties with allOf in combination with conditional schema compositions', t => {
+  t.is(toDataPath('/allOf/1/properties/foo/allOf/0/then/properties/bar'), 'foo.bar');
+});
 test('toDataPath replace oneOf', t => {
   t.is(toDataPath('/oneOf/1/properties/foo/oneOf/1/properties/bar'), 'foo.bar');
 });
+test('toDataPath replace oneOf in combination with conditional schema compositions', t => {
+  t.is(toDataPath('/oneOf/1/then/properties/foo'), 'foo');
+});
+test('toDataPath replace multiple directly nested oneOf in combination with conditional schema compositions', t => {
+  t.is(toDataPath('/oneOf/1/then/oneOf/0/then/properties/foo'), 'foo');
+});
+test('toDataPath replace multiple nested properties with oneOf in combination with conditional schema compositions', t => {
+  t.is(toDataPath('/oneOf/1/properties/foo/oneOf/0/then/properties/bar'), 'foo.bar');
+});
 test('toDataPath replace all combinators', t => {
   t.is(
     toDataPath(

packages/core/test/util/resolvers.test.ts

@@ -84,15 +84,58 @@ test('resolveSchema - resolves schema with any ', t => {
           }
         }]
       }
-    }
+    },
+    anyOf: [
+      {
+        if: {
+          properties: {
+            exist: {
+              const: true
+            }
+          }
+        },
+        then: {
+          properties: {
+            lastname: {
+              type: 'string'
+            }
+          }
+        },
+        else: {
+          properties: {
+            firstname: {
+              type: 'string'
+            },
+            address: {
+              type: 'object',
+              anyOf: [
+                {
+                  properties: {
+                    street: {
+                      type: 'string'
+                    }
+                  }
+                }
+              ]
+            }
+          }
+        }
+      }
+    ]
   };
   // test backward compatibility
   t.deepEqual(resolveSchema(schema, '#/properties/description/oneOf/0/properties/name', schema), {type: 'string'});
   t.deepEqual(resolveSchema(schema, '#/properties/description/oneOf/1/properties/index', schema), {type: 'number'});
+  t.deepEqual(resolveSchema(schema, '#/anyOf/0/then/properties/lastname', schema), {type: 'string'});
+  t.deepEqual(resolveSchema(schema, '#/anyOf/0/else/properties/firstname', schema), {type: 'string'});
+  t.deepEqual(resolveSchema(schema, '#/anyOf/0/else/properties/address/anyOf/0/properties/street', schema), {type: 'string'});
   // new simple approach
   t.deepEqual(resolveSchema(schema, '#/properties/description/properties/name', schema), {type: 'string'});
   t.deepEqual(resolveSchema(schema, '#/properties/description/properties/index', schema), {type: 'number'});
   t.deepEqual(resolveSchema(schema, '#/properties/description/properties/exist', schema), {type: 'boolean'});
+  t.deepEqual(resolveSchema(schema, '#/properties/lastname', schema), {type: 'string'});
+  t.deepEqual(resolveSchema(schema, '#/properties/firstname', schema), {type: 'string'});
+  t.deepEqual(resolveSchema(schema, '#/properties/address/properties/street', schema), {type: 'string'});
   t.is(resolveSchema(schema, '#/properties/description/properties/notfound', schema), undefined);
   // refs
   t.deepEqual(resolveSchema(schema, '#/properties/description/properties/element/properties/geometry', schema), {type: 'string'});

packages/examples/src/examples/conditional-schema-compositions.ts

@@ -0,0 +1,118 @@
+/*
+  The MIT License
+
+  Copyright (c) 2017-2019 EclipseSource Munich
+  https://github.com/eclipsesource/jsonforms
+
+  Permission is hereby granted, free of charge, to any person obtaining a copy
+  of this software and associated documentation files (the "Software"), to deal
+  in the Software without restriction, including without limitation the rights
+  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+  copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+  THE SOFTWARE.
+*/
+import { registerExamples } from '../register';
+
+export const schema = {
+  type: 'object',
+  properties: {
+    name: {
+      type: 'string',
+      minLength: 1,
+      description: 'The task\'s name',
+    },
+    recurrence: {
+      type: 'string',
+      enum: ['Never', 'Daily', 'Weekly', 'Monthly'],
+    },
+  },
+  anyOf: [
+    {
+      if: {
+        properties: {
+          recurrence: {
+            const: 'Never'
+          }
+        }
+      },
+      then: {
+        properties: {
+          lastname: {
+            type: 'string'
+          },
+          age: {
+            type: 'number'
+          }
+        }
+      }
+    },
+  ]
+};
+
+export const uischema = {
+  type: 'HorizontalLayout',
+  elements: [
+    {
+      type: 'VerticalLayout',
+      elements: [
+        {
+          type: 'Control',
+          scope: '#/properties/name',
+        },
+        {
+          type: 'Control',
+          scope: '#/properties/recurrence',
+        },
+        {
+          type: 'Control',
+          scope: '#/anyOf/0/then/properties/lastname',
+          rule: {
+            effect: 'SHOW',
+            condition: {
+              scope: '#/properties/recurrence',
+              schema: {
+                const: 'Never'
+              }
+            }
+          }
+        },
+        {
+          type: 'Control',
+          scope: '#/properties/age',
+          rule: {
+            effect: 'SHOW',
+            condition: {
+              scope: '#/properties/recurrence',
+              schema: {
+                const: 'Never'
+              }
+            }
+          }
+        },
+      ],
+    },
+  ],
+};
+
+const data = {};
+
+registerExamples([
+  {
+    name: 'conditional-schema-compositions',
+    label: 'Conditional Schema Compositions',
+    data,
+    schema,
+    uischema
+  }
+]);

packages/examples/src/index.ts

@@ -75,6 +75,7 @@ import * as enumInArray from './examples/enumInArray';
 import * as readonly from './examples/readonly';
 import * as bug_1779 from './examples/1779';
 import * as bug_1645 from './examples/1645';
+import * as conditionalSchemaComposition from './examples/conditional-schema-compositions';
 export * from './register';
 export * from './example';
 
@@ -134,5 +135,6 @@ export {
   enumInArray,
   readonly,
   bug_1779,
-  bug_1645
+  bug_1645,
+  conditionalSchemaComposition
 };