public makeTransformationRuleDescriptions()

in ui/src/app/connect/services/transformation-rule.service.ts [53:151]
93 lines of code
5 McCabe index (conditional complexity)

    public makeTransformationRuleDescriptions(
        originalSchema: EventSchema,
        targetSchema: EventSchema,
    ): TransformationRuleDescriptionUnion[] {
        let transformationRuleDescriptions: TransformationRuleDescriptionUnion[] =
            [];

        if (originalSchema == null || targetSchema == null) {
            console.log('Old and new schema must be defined');
        } else {
            const addedTimestampProperty = this.getTimestampProperty(
                targetSchema.eventProperties,
            );
            if (addedTimestampProperty) {
                // add to old event schema for the case users moved the property to a nested property
                originalSchema.eventProperties.push(addedTimestampProperty);

                const timestampRuleDescription: AddTimestampRuleDescription =
                    new AddTimestampRuleDescription();
                timestampRuleDescription['@class'] =
                    'org.apache.streampipes.model.connect.rules.value.AddTimestampRuleDescription';
                timestampRuleDescription.runtimeKey =
                    addedTimestampProperty.runtimeName;
                timestampRuleDescription.propertyScope =
                    addedTimestampProperty.propertyScope as PropertyScope;
                transformationRuleDescriptions.push(timestampRuleDescription);
            }
            const staticValueProperties = this.getStaticValueProperties(
                targetSchema.eventProperties,
            );
            for (const ep of staticValueProperties) {
                this.pushCopyToOriginalSchemaIfNotExists(originalSchema, ep);

                const rule = this.createAddValueTransformationRule(ep);
                transformationRuleDescriptions.push(rule);
            }

            // Scale
            transformationRuleDescriptions = transformationRuleDescriptions
                .concat(
                    this.getRegexTransformationRules(
                        targetSchema.eventProperties,
                        originalSchema,
                        targetSchema,
                    ),
                )
                .concat(
                    this.getCorrectionValueRules(
                        targetSchema.eventProperties,
                        originalSchema,
                        targetSchema,
                    ),
                )
                .concat(
                    this.getRenameRules(
                        targetSchema.eventProperties,
                        originalSchema,
                        targetSchema,
                    ),
                )
                .concat(
                    this.getCreateNestedRules(
                        targetSchema.eventProperties,
                        originalSchema,
                        targetSchema,
                    ),
                )
                .concat(
                    this.getMoveRules(
                        targetSchema.eventProperties,
                        originalSchema,
                        targetSchema,
                    ),
                )
                .concat(this.getDeleteRules(originalSchema, targetSchema))
                .concat(
                    this.getUnitTransformRules(
                        targetSchema.eventProperties,
                        originalSchema,
                        targetSchema,
                    ),
                )
                .concat(
                    this.getTimestampTransformRules(
                        targetSchema.eventProperties,
                        originalSchema,
                        targetSchema,
                    ),
                )
                .concat(
                    this.getDatatypeTransformRules(
                        targetSchema.eventProperties,
                        originalSchema,
                        targetSchema,
                    ),
                );
            return transformationRuleDescriptions;
        }
    }