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FlowableElementState,
FlowableProcessExtensionState,
XmlIdentified,
} from '../types';
const EMPTY_RECORD: Record<string, unknown> = {};
function cloneArray<T>(items: T[] | undefined): T[] {
return items?.map((item) => ({ ...item })) || [];
}
function cloneRecord<T extends object>(value: T | undefined): T | Record<string, never> {
return value ? { ...value } : {};
}
function cloneOptionalObject<T extends object>(value: T | null | undefined): T | null {
if (value === null) {
return null;
}
return value ? { ...value } : null;
}
function preferValue<T>(incomingValue: T | undefined, originalValue: T | undefined, fallbackValue: T): T {
return incomingValue ?? originalValue ?? fallbackValue;
}
function preferOptionalObject<T extends object>(incomingValue: T | null | undefined, originalValue: T | null | undefined): T | null {
Eif (incomingValue !== undefined) {
return cloneOptionalObject(incomingValue);
}
return cloneOptionalObject(originalValue);
}
function preferExtensionElements(incomingValue: string[] | undefined, originalValue: string[] | undefined): string[] {
if (incomingValue && incomingValue.length > 0) {
return [...incomingValue];
}
return [...(originalValue || [])];
}
export function mergeElementState(
originalState: FlowableElementState | undefined,
incomingState: FlowableElementState | undefined,
): FlowableElementState | undefined {
Iif (!originalState && !incomingState) {
return undefined;
}
const base = originalState || incomingState;
Iif (!base) {
return undefined;
}
return {
id: preferValue(incomingState?.id, originalState?.id, base.id),
type: preferValue(incomingState?.type, originalState?.type, base.type),
activitiAttributes: cloneRecord(incomingState?.activitiAttributes ?? originalState?.activitiAttributes),
fieldExtensions: cloneArray(incomingState?.fieldExtensions ?? originalState?.fieldExtensions),
taskListeners: cloneArray(incomingState?.taskListeners ?? originalState?.taskListeners),
executionListeners: cloneArray(incomingState?.executionListeners ?? originalState?.executionListeners),
formProperties: cloneArray(incomingState?.formProperties ?? originalState?.formProperties),
inputParameters: cloneArray(incomingState?.inputParameters ?? originalState?.inputParameters),
outputParameters: cloneArray(incomingState?.outputParameters ?? originalState?.outputParameters),
multiInstance: preferOptionalObject(incomingState?.multiInstance, originalState?.multiInstance),
conditionExpression: preferValue(incomingState?.conditionExpression, originalState?.conditionExpression, ''),
script: preferValue(incomingState?.script, originalState?.script, ''),
timerDefinition: preferOptionalObject(incomingState?.timerDefinition, originalState?.timerDefinition),
errorRef: preferValue(incomingState?.errorRef, originalState?.errorRef, ''),
signalRef: preferValue(incomingState?.signalRef, originalState?.signalRef, ''),
messageRef: preferValue(incomingState?.messageRef, originalState?.messageRef, ''),
terminateAll: preferValue(incomingState?.terminateAll, originalState?.terminateAll, ''),
compensateActivityRef: preferValue(incomingState?.compensateActivityRef, originalState?.compensateActivityRef, ''),
isForCompensation: preferValue(incomingState?.isForCompensation, originalState?.isForCompensation, ''),
failedJobRetryTimeCycle: preferValue(incomingState?.failedJobRetryTimeCycle, originalState?.failedJobRetryTimeCycle, ''),
exceptionMaps: cloneArray(incomingState?.exceptionMaps ?? originalState?.exceptionMaps),
documentation: preferValue(incomingState?.documentation, originalState?.documentation, ''),
preservedAttributes: {
...originalState?.preservedAttributes,
...incomingState?.preservedAttributes,
},
preservedExtensionElements: preferExtensionElements(incomingState?.preservedExtensionElements, originalState?.preservedExtensionElements),
};
}
function cloneIdentifiedCollection<T extends XmlIdentified>(items: T[]): T[] {
return items.map((item) => ({ ...item }));
}
function cloneValue<T>(value: T): T {
Iif (Array.isArray(value)) {
return [...value] as T;
}
if (value && typeof value === 'object') {
return { ...value } as T;
}
return value;
}
function areValuesEquivalent<T>(left: T, right: T): boolean {
return JSON.stringify(left) === JSON.stringify(right);
}
export function mergeSerializedValue<T>(originalValue: T, serializedValue: T, incomingValue: T): T {
if (!areValuesEquivalent(incomingValue, originalValue)) {
return cloneValue(incomingValue);
}
return cloneValue(serializedValue);
}
export function mergeSerializedOverlayValue<T>(
originalValue: T,
serializedValue: T,
incomingValue: T,
preserveOriginalOnEmptySerialized: boolean,
isEmpty: (value: T) => boolean,
): T {
if (!areValuesEquivalent(incomingValue, originalValue)) {
return cloneValue(incomingValue);
}
if (preserveOriginalOnEmptySerialized && isEmpty(serializedValue)) {
return cloneValue(originalValue);
}
return cloneValue(serializedValue);
}
function stripXmlIdentity<T extends XmlIdentified>(item: T): Omit<T, 'xmlIdentity'> {
const { xmlIdentity: _xmlIdentity, ...rest } = item;
return rest;
}
function areCollectionsEquivalent<T extends XmlIdentified>(left: T[], right: T[]): boolean {
if (left.length !== right.length) {
return false;
}
return left.every((item, index) => {
const other = right[index];
Iif (!other) {
return false;
}
return JSON.stringify(stripXmlIdentity(item)) === JSON.stringify(stripXmlIdentity(other));
});
}
function areItemsEquivalent<T extends XmlIdentified>(left: T | undefined, right: T | undefined): boolean {
Iif (!left || !right) {
return left === right;
}
return JSON.stringify(stripXmlIdentity(left)) === JSON.stringify(stripXmlIdentity(right));
}
function areCollectionKeysEquivalent<T extends XmlIdentified>(
left: T[],
right: T[],
getKey: (item: T) => string,
): boolean {
if (left.length !== right.length) {
return false;
}
return left.every((item, index) => {
const other = right[index];
return Boolean(other) && getKey(item) === getKey(other);
});
}
function createMergedRecordBase<T extends XmlIdentified>(
originalItem: T | undefined,
serializedItem: T | undefined,
incomingItem: T,
): Record<string, unknown> {
return {
...((serializedItem ?? originalItem ?? incomingItem) as unknown as Record<string, unknown>),
};
}
function collectMergeKeys(
originalRecord: Record<string, unknown>,
serializedRecord: Record<string, unknown>,
incomingRecord: Record<string, unknown>,
): Set<string> {
return new Set([
...Object.keys(originalRecord),
...Object.keys(serializedRecord),
...Object.keys(incomingRecord),
]);
}
function mergeSerializedCollectionItem<T extends XmlIdentified>(
originalItem: T | undefined,
serializedItem: T | undefined,
incomingItem: T,
): T {
const originalRecord = (originalItem ?? EMPTY_RECORD) as Record<string, unknown>;
const serializedRecord = (serializedItem ?? EMPTY_RECORD) as Record<string, unknown>;
const incomingRecord = incomingItem as unknown as Record<string, unknown>;
const mergedRecord = createMergedRecordBase(originalItem, serializedItem, incomingItem);
const keys = collectMergeKeys(originalRecord, serializedRecord, incomingRecord);
for (const key of keys) {
if (key === 'xmlIdentity') {
continue;
}
if (!originalItem) {
mergedRecord[key] = incomingRecord[key];
continue;
}
if (incomingRecord[key] !== originalRecord[key]) {
mergedRecord[key] = incomingRecord[key];
continue;
}
if (serializedItem && key in serializedRecord) {
mergedRecord[key] = serializedRecord[key];
continue;
}
mergedRecord[key] = incomingRecord[key];
}
mergedRecord.xmlIdentity = incomingItem.xmlIdentity || serializedItem?.xmlIdentity || originalItem?.xmlIdentity;
return mergedRecord as T;
}
function mergeAlignedSerializedCollectionState<T extends XmlIdentified>(
originalByKey: Map<string, T>,
serializedItems: T[],
incomingItems: T[],
incomingByKey: Map<string, T>,
serializedByKey: Map<string, T>,
getKey: (item: T) => string,
): T[] {
const mergedItems: T[] = [];
const includedKeys = new Set<string>();
for (const serializedItem of serializedItems) {
const key = getKey(serializedItem);
const originalItem = originalByKey.get(key);
const incomingItem = incomingByKey.get(key);
Iif (!incomingItem) {
if (!originalItem) {
mergedItems.push({ ...serializedItem });
includedKeys.add(key);
}
continue;
}
mergedItems.push(mergeSerializedCollectionItem(originalItem, serializedItem, incomingItem));
includedKeys.add(key);
}
for (const incomingItem of incomingItems) {
const key = getKey(incomingItem);
if (includedKeys.has(key)) {
continue;
}
const originalItem = originalByKey.get(key);
Iif (originalItem && areItemsEquivalent(incomingItem, originalItem)) {
continue;
}
mergedItems.push(mergeSerializedCollectionItem(originalItem, serializedByKey.get(key), incomingItem));
}
return mergedItems;
}
function mergeReorderedSerializedCollectionState<T extends XmlIdentified>(
originalByKey: Map<string, T>,
serializedItems: T[],
incomingItems: T[],
serializedByKey: Map<string, T>,
getKey: (item: T) => string,
): T[] {
const mergedItems: T[] = [];
const includedKeys = new Set<string>();
for (const incomingItem of incomingItems) {
const key = getKey(incomingItem);
const originalItem = originalByKey.get(key);
const serializedItem = serializedByKey.get(key);
Iif (!serializedItem && originalItem && areItemsEquivalent(incomingItem, originalItem)) {
continue;
}
mergedItems.push(mergeSerializedCollectionItem(originalItem, serializedItem, incomingItem));
includedKeys.add(key);
}
for (const serializedItem of serializedItems) {
const key = getKey(serializedItem);
Iif (!includedKeys.has(key) && !originalByKey.has(key)) {
mergedItems.push({ ...serializedItem });
}
}
return mergedItems;
}
export function mergeSerializedCollectionState<T extends XmlIdentified>(
originalItems: T[],
serializedItems: T[],
incomingItems: T[],
getKey: (item: T) => string,
): T[] {
if (areCollectionsEquivalent(incomingItems, originalItems)) {
return cloneIdentifiedCollection(serializedItems);
}
const originalByKey = new Map(originalItems.map((item) => [getKey(item), item]));
const serializedByKey = new Map(serializedItems.map((item) => [getKey(item), item]));
const incomingByKey = new Map(incomingItems.map((item) => [getKey(item), item]));
const incomingStructureMatchesOriginal = areCollectionKeysEquivalent(incomingItems, originalItems, getKey);
if (incomingStructureMatchesOriginal) {
return mergeAlignedSerializedCollectionState(
originalByKey,
serializedItems,
incomingItems,
incomingByKey,
serializedByKey,
getKey,
);
}
return mergeReorderedSerializedCollectionState(originalByKey, serializedItems, incomingItems, serializedByKey, getKey);
}
export function mergePreservedExtensionElements(
baseElements: string[],
serializedElements: string[],
serializedHadExtensionContainer = serializedElements.length > 0,
preserveMissingContainerElements = true,
): string[] {
if (serializedElements.length === 0 && !serializedHadExtensionContainer && preserveMissingContainerElements) {
return [...baseElements];
}
return [...serializedElements];
}
export function mergeSerializedProcessExtensionStates(
originalItems: FlowableProcessExtensionState[],
serializedItems: FlowableProcessExtensionState[],
incomingItems: FlowableProcessExtensionState[],
serializedProcessIdsWithExtensionElements: Set<string>,
preserveMissingContainerElements = true,
): FlowableProcessExtensionState[] {
const originalByProcessId = new Map(originalItems.map((item) => [item.processId || '', item] as const));
const serializedByProcessId = new Map(serializedItems.map((item) => [item.processId || '', item] as const));
const incomingByProcessId = new Map(incomingItems.map((item) => [item.processId || '', item] as const));
const processIds = new Set<string>([
...originalByProcessId.keys(),
...serializedByProcessId.keys(),
...incomingByProcessId.keys(),
]);
const mergedItems: FlowableProcessExtensionState[] = [];
for (const processId of processIds) {
const originalPreserved = originalByProcessId.get(processId)?.preservedExtensionElements || [];
const incomingPreserved = incomingByProcessId.get(processId)?.preservedExtensionElements || originalPreserved;
const serializedPreserved = serializedByProcessId.get(processId)?.preservedExtensionElements || [];
const serializedHadExtensionContainer = serializedProcessIdsWithExtensionElements.has(processId);
const mergedPreserved = areValuesEquivalent(incomingPreserved, originalPreserved)
? mergePreservedExtensionElements(
originalPreserved,
serializedPreserved,
serializedHadExtensionContainer,
preserveMissingContainerElements,
)
: [...incomingPreserved];
if (mergedPreserved.length > 0) {
mergedItems.push({
processId,
preservedExtensionElements: mergedPreserved,
});
}
}
return mergedItems;
}
export function getStableCollectionKey<T extends XmlIdentified>(item: T, fallbackKey: string): string {
return item.xmlIdentity || fallbackKey;
} |