Examples with NamedDataSchema com.linkedin.data.schema.NamedDataSchema used on opensource projects

Example 46 with NamedDataSchema

use of com.linkedin.data.schema.NamedDataSchema in project rest.li by linkedin.

the class RestLiResourceRelationship method findDataModels.

private void findDataModels() {
    final ResourceSchemaVisitior visitor = new BaseResourceSchemaVisitor() {

        @Override
        public void visitResourceSchema(VisitContext visitContext, ResourceSchema resourceSchema) {
            final String schema = resourceSchema.getSchema();
            // ActionSet resources do not have a schema
            if (schema != null) {
                final NamedDataSchema schemaSchema = extractSchema(schema);
                if (schemaSchema != null) {
                    connectSchemaToResource(visitContext, schemaSchema);
                }
            }
        }

        @Override
        public void visitCollectionResource(VisitContext visitContext, CollectionSchema collectionSchema) {
            final IdentifierSchema id = collectionSchema.getIdentifier();
            final NamedDataSchema typeSchema = extractSchema(id.getType());
            if (typeSchema != null) {
                connectSchemaToResource(visitContext, typeSchema);
            }
            final String params = id.getParams();
            if (params != null) {
                final NamedDataSchema paramsSchema = extractSchema(params);
                if (paramsSchema != null) {
                    connectSchemaToResource(visitContext, paramsSchema);
                }
            }
        }

        @Override
        public void visitAssociationResource(VisitContext visitContext, AssociationSchema associationSchema) {
            for (AssocKeySchema key : associationSchema.getAssocKeys()) {
                final NamedDataSchema keyTypeSchema = extractSchema(key.getType());
                if (keyTypeSchema != null) {
                    connectSchemaToResource(visitContext, keyTypeSchema);
                }
            }
        }

        @Override
        public void visitParameter(VisitContext visitContext, RecordTemplate parentResource, Object parentMethodSchema, ParameterSchema parameterSchema) {
            String parameterTypeString = parameterSchema.getType();
            if (// the parameter type field contains a inline schema, so we traverse into it
            isInlineSchema(parameterTypeString)) {
                visitInlineSchema(visitContext, parameterTypeString);
            } else {
                final NamedDataSchema schema;
                // grab the schema name from it
                if (parameterSchema.hasItems()) {
                    schema = extractSchema(parameterSchema.getItems());
                } else // the only remaining possibility is that the type field contains the name of a data schema
                {
                    schema = extractSchema(parameterTypeString);
                }
                if (schema != null) {
                    connectSchemaToResource(visitContext, schema);
                }
            }
        }

        @Override
        public void visitFinder(VisitContext visitContext, RecordTemplate parentResource, FinderSchema finderSchema) {
            final MetadataSchema metadata = finderSchema.getMetadata();
            if (metadata != null) {
                final NamedDataSchema metadataTypeSchema = extractSchema(metadata.getType());
                if (metadataTypeSchema != null) {
                    connectSchemaToResource(visitContext, metadataTypeSchema);
                }
            }
        }

        @Override
        public void visitAction(VisitContext visitContext, RecordTemplate parentResource, ResourceLevel resourceLevel, ActionSchema actionSchema) {
            final String returns = actionSchema.getReturns();
            if (returns != null) {
                if (// the parameter type field contains a inline schema, so we traverse into it
                isInlineSchema(returns)) {
                    visitInlineSchema(visitContext, returns);
                } else // otherwise the type field contains the name of a data schema
                {
                    final NamedDataSchema returnsSchema = extractSchema(returns);
                    if (returnsSchema != null) {
                        connectSchemaToResource(visitContext, returnsSchema);
                    }
                }
            }
            final StringArray throwsArray = actionSchema.getThrows();
            if (throwsArray != null) {
                for (String errorName : throwsArray) {
                    final NamedDataSchema errorSchema = extractSchema(errorName);
                    if (errorSchema != null) {
                        connectSchemaToResource(visitContext, errorSchema);
                    }
                }
            }
        }

        private boolean isInlineSchema(String schemaString) {
            return schemaString.startsWith("{");
        }

        private void visitInlineSchema(VisitContext visitContext, String schemaString) {
            DataSchema schema = DataTemplateUtil.parseSchema(schemaString, _schemaResolver);
            if (schema instanceof ArrayDataSchema) {
                DataSchema itemSchema = ((ArrayDataSchema) schema).getItems();
                if (itemSchema instanceof NamedDataSchema) {
                    connectSchemaToResource(visitContext, (NamedDataSchema) itemSchema);
                }
            }
            if (schema instanceof MapDataSchema) {
                DataSchema valueSchema = ((MapDataSchema) schema).getValues();
                if (valueSchema instanceof NamedDataSchema) {
                    connectSchemaToResource(visitContext, (NamedDataSchema) valueSchema);
                }
            }
        }

        private void connectSchemaToResource(VisitContext visitContext, final NamedDataSchema schema) {
            final Node<NamedDataSchema> schemaNode = _relationships.get(schema);
            _dataModels.put(schema.getFullName(), schema);
            final DataSchemaTraverse traveler = new DataSchemaTraverse();
            traveler.traverse(schema, new DataSchemaTraverse.Callback() {

                @Override
                public void callback(List<String> path, DataSchema nestedSchema) {
                    if (nestedSchema instanceof RecordDataSchema && nestedSchema != schema) {
                        final RecordDataSchema nestedRecordSchema = (RecordDataSchema) nestedSchema;
                        _dataModels.put(nestedRecordSchema.getFullName(), nestedRecordSchema);
                        final Node<RecordDataSchema> node = _relationships.get(nestedRecordSchema);
                        schemaNode.addAdjacentNode(node);
                    }
                }
            });
            final Node<ResourceSchema> resourceNode = _relationships.get(visitContext.getParentSchema());
            resourceNode.addAdjacentNode(schemaNode);
            schemaNode.addAdjacentNode(resourceNode);
        }
    };
    ResourceSchemaCollection.visitResources(_resourceSchemas.getResources().values(), visitor);
}