@orbit/record-cache
Version:
Orbit base classes used to access and maintain a set of records.
182 lines • 25.1 kB
JavaScript
import { objectValues } from '@orbit/utils';
import { deserializeRecordIdentity, serializeRecordIdentity } from '@orbit/records';
import { SyncRecordCache } from './sync-record-cache';
function serializeRecordRelationshipIdentity(rri) {
return `${serializeRecordIdentity(rri.record)}::${rri.relationship}`;
}
function deserializeRecordRelationshipIdentity(rri) {
const [record, relationship] = rri.split('::');
return { record: deserializeRecordIdentity(record), relationship };
}
export class SimpleRecordTransformBuffer extends SyncRecordCache {
constructor(settings) {
super(settings);
this.resetState();
}
resetState() {
this._state = {
records: {},
inverseRelationships: {}
};
}
startTrackingChanges() {
this._delta = {
records: {},
inverseRelationships: {}
};
}
stopTrackingChanges() {
var _a, _b, _c, _d;
if (this._delta === undefined) {
throw new Error(`Changes are not being tracked. Call 'startTrackingChanges' before 'stopTrackingChanges'`);
}
let { records, inverseRelationships } = this._delta;
let changeset = {};
for (let rid of Object.keys(records)) {
let rv = records[rid];
if (rv === null) {
changeset.removeRecords = (_a = changeset.removeRecords) !== null && _a !== void 0 ? _a : [];
changeset.removeRecords.push(deserializeRecordIdentity(rid));
}
else {
changeset.setRecords = (_b = changeset.setRecords) !== null && _b !== void 0 ? _b : [];
changeset.setRecords.push(rv);
}
}
for (let rid of Object.keys(inverseRelationships)) {
let relatedRecord = deserializeRecordIdentity(rid);
let rels = inverseRelationships[rid];
for (let rel of Object.keys(rels)) {
let rv = rels[rel];
let { record, relationship } = deserializeRecordRelationshipIdentity(rel);
let rri = { relatedRecord, record, relationship };
if (rv === null) {
changeset.removeInverseRelationships =
(_c = changeset.removeInverseRelationships) !== null && _c !== void 0 ? _c : [];
changeset.removeInverseRelationships.push(rri);
}
else {
changeset.addInverseRelationships =
(_d = changeset.addInverseRelationships) !== null && _d !== void 0 ? _d : [];
changeset.addInverseRelationships.push(rri);
}
}
}
this._delta = undefined;
return changeset;
}
getRecordSync(identity) {
var _a;
return (_a = this._state.records[serializeRecordIdentity(identity)]) !== null && _a !== void 0 ? _a : undefined;
}
getRecordsSync(typeOrIdentities) {
if (typeof typeOrIdentities === 'string') {
return objectValues(this._state.records[typeOrIdentities]);
}
else if (Array.isArray(typeOrIdentities)) {
const records = [];
const identities = typeOrIdentities;
for (let i of identities) {
let record = this.getRecordSync(i);
if (record) {
records.push(record);
}
}
return records;
}
else {
throw new Error('typeOrIdentities must be specified in getRecordsSync');
}
}
setRecordSync(record) {
this._state.records[serializeRecordIdentity(record)] = record;
if (this._delta) {
this._delta.records[serializeRecordIdentity(record)] = record;
}
}
setRecordsSync(records) {
records.forEach((record) => this.setRecordSync(record));
}
removeRecordSync(recordIdentity) {
const record = this.getRecordSync(recordIdentity);
if (record) {
delete this._state.records[serializeRecordIdentity(record)];
if (this._delta) {
this._delta.records[serializeRecordIdentity(record)] = null;
}
return record;
}
else {
return undefined;
}
}
removeRecordsSync(recordIdentities) {
const records = [];
for (let recordIdentity of recordIdentities) {
let record = this.getRecordSync(recordIdentity);
if (record) {
records.push(record);
delete this._state.records[serializeRecordIdentity(record)];
if (this._delta) {
this._delta.records[serializeRecordIdentity(record)] = null;
}
}
}
return records;
}
getInverseRelationshipsSync(recordIdentityOrIdentities) {
if (Array.isArray(recordIdentityOrIdentities)) {
let relationships = [];
recordIdentityOrIdentities.forEach((record) => {
Array.prototype.push(relationships, this._getInverseRelationshipsSync(record));
});
return relationships;
}
else {
return this._getInverseRelationshipsSync(recordIdentityOrIdentities);
}
}
addInverseRelationshipsSync(relationships) {
var _a, _b;
for (let relationship of relationships) {
const ri = serializeRecordIdentity(relationship.relatedRecord);
const rri = serializeRecordRelationshipIdentity(relationship);
const rels = (_a = this._state.inverseRelationships[ri]) !== null && _a !== void 0 ? _a : {};
rels[rri] = relationship;
this._state.inverseRelationships[ri] = rels;
if (this._delta) {
const rels = (_b = this._delta.inverseRelationships[ri]) !== null && _b !== void 0 ? _b : {};
rels[rri] = relationship;
this._delta.inverseRelationships[ri] = rels;
}
}
}
removeInverseRelationshipsSync(relationships) {
var _a;
for (let relationship of relationships) {
const ri = serializeRecordIdentity(relationship.relatedRecord);
const rri = serializeRecordRelationshipIdentity(relationship);
const rels = this._state.inverseRelationships[ri];
if (rels) {
rels[rri] = null;
if (this._delta) {
const rels = (_a = this._delta.inverseRelationships[ri]) !== null && _a !== void 0 ? _a : {};
rels[rri] = null;
}
}
}
}
/////////////////////////////////////////////////////////////////////////////
// Protected methods
/////////////////////////////////////////////////////////////////////////////
_getInverseRelationshipsSync(recordIdentity) {
let relationships = this._state.inverseRelationships[serializeRecordIdentity(recordIdentity)];
if (relationships) {
return objectValues(relationships).filter((r) => r !== null);
}
else {
return [];
}
}
}
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{ Dict, objectValues } from '@orbit/utils';\nimport {\n  deserializeRecordIdentity,\n  InitializedRecord,\n  RecordIdentity,\n  serializeRecordIdentity\n} from '@orbit/records';\nimport { RecordChangeset, RecordRelationshipIdentity } from './record-accessor';\nimport { SyncRecordCache, SyncRecordCacheSettings } from './sync-record-cache';\nimport { RecordTransformBuffer } from './record-transform-buffer';\n\nfunction serializeRecordRelationshipIdentity(\n  rri: RecordRelationshipIdentity\n): string {\n  return `${serializeRecordIdentity(rri.record)}::${rri.relationship}`;\n}\n\nfunction deserializeRecordRelationshipIdentity(\n  rri: string\n): { record: RecordIdentity; relationship: string } {\n  const [record, relationship] = rri.split('::');\n  return { record: deserializeRecordIdentity(record), relationship };\n}\n\nexport interface SimpleRecordTransformBufferState {\n  records: Dict<InitializedRecord | null>;\n  inverseRelationships: Dict<Dict<RecordRelationshipIdentity | null>>;\n}\n\nexport class SimpleRecordTransformBuffer\n  extends SyncRecordCache\n  implements RecordTransformBuffer {\n  protected _state!: SimpleRecordTransformBufferState;\n  protected _delta?: SimpleRecordTransformBufferState;\n\n  constructor(settings: SyncRecordCacheSettings) {\n    super(settings);\n    this.resetState();\n  }\n\n  resetState(): void {\n    this._state = {\n      records: {},\n      inverseRelationships: {}\n    };\n  }\n\n  startTrackingChanges(): void {\n    this._delta = {\n      records: {},\n      inverseRelationships: {}\n    };\n  }\n\n  stopTrackingChanges(): RecordChangeset {\n    if (this._delta === undefined) {\n      throw new Error(\n        `Changes are not being tracked. Call 'startTrackingChanges' before 'stopTrackingChanges'`\n      );\n    }\n\n    let { records, inverseRelationships } = this._delta;\n    let changeset: RecordChangeset = {};\n\n    for (let rid of Object.keys(records)) {\n      let rv = records[rid];\n      if (rv === null) {\n        changeset.removeRecords = changeset.removeRecords ?? [];\n        changeset.removeRecords.push(deserializeRecordIdentity(rid));\n      } else {\n        changeset.setRecords = changeset.setRecords ?? [];\n        changeset.setRecords.push(rv);\n      }\n    }\n\n    for (let rid of Object.keys(inverseRelationships)) {\n      let relatedRecord = deserializeRecordIdentity(rid);\n      let rels = inverseRelationships[rid];\n      for (let rel of Object.keys(rels)) {\n        let rv = rels[rel];\n        let { record, relationship } = deserializeRecordRelationshipIdentity(\n          rel\n        );\n        let rri = { relatedRecord, record, relationship };\n        if (rv === null) {\n          changeset.removeInverseRelationships =\n            changeset.removeInverseRelationships ?? [];\n          changeset.removeInverseRelationships.push(rri);\n        } else {\n          changeset.addInverseRelationships =\n            changeset.addInverseRelationships ?? [];\n          changeset.addInverseRelationships.push(rri);\n        }\n      }\n    }\n\n    this._delta = undefined;\n\n    return changeset;\n  }\n\n  getRecordSync(identity: RecordIdentity): InitializedRecord | undefined {\n    return this._state.records[serializeRecordIdentity(identity)] ?? undefined;\n  }\n\n  getRecordsSync(\n    typeOrIdentities?: string | RecordIdentity[]\n  ): InitializedRecord[] {\n    if (typeof typeOrIdentities === 'string') {\n      return objectValues(this._state.records[typeOrIdentities]);\n    } else if (Array.isArray(typeOrIdentities)) {\n      const records: InitializedRecord[] = [];\n      const identities: RecordIdentity[] = typeOrIdentities;\n      for (let i of identities) {\n        let record = this.getRecordSync(i);\n        if (record) {\n          records.push(record);\n        }\n      }\n      return records;\n    } else {\n      throw new Error('typeOrIdentities must be specified in getRecordsSync');\n    }\n  }\n\n  setRecordSync(record: InitializedRecord): void {\n    this._state.records[serializeRecordIdentity(record)] = record;\n    if (this._delta) {\n      this._delta.records[serializeRecordIdentity(record)] = record;\n    }\n  }\n\n  setRecordsSync(records: InitializedRecord[]): void {\n    records.forEach((record) => this.setRecordSync(record));\n  }\n\n  removeRecordSync(\n    recordIdentity: RecordIdentity\n  ): InitializedRecord | undefined {\n    const record = this.getRecordSync(recordIdentity);\n    if (record) {\n      delete this._state.records[serializeRecordIdentity(record)];\n      if (this._delta) {\n        this._delta.records[serializeRecordIdentity(record)] = null;\n      }\n      return record;\n    } else {\n      return undefined;\n    }\n  }\n\n  removeRecordsSync(recordIdentities: RecordIdentity[]): InitializedRecord[] {\n    const records = [];\n    for (let recordIdentity of recordIdentities) {\n      let record = this.getRecordSync(recordIdentity);\n      if (record) {\n        records.push(record);\n        delete this._state.records[serializeRecordIdentity(record)];\n        if (this._delta) {\n          this._delta.records[serializeRecordIdentity(record)] = null;\n        }\n      }\n    }\n    return records;\n  }\n\n  getInverseRelationshipsSync(\n    recordIdentityOrIdentities: RecordIdentity | RecordIdentity[]\n  ): RecordRelationshipIdentity[] {\n    if (Array.isArray(recordIdentityOrIdentities)) {\n      let relationships: RecordRelationshipIdentity[] = [];\n      recordIdentityOrIdentities.forEach((record) => {\n        Array.prototype.push(\n          relationships,\n          this._getInverseRelationshipsSync(record)\n        );\n      });\n      return relationships;\n    } else {\n      return this._getInverseRelationshipsSync(recordIdentityOrIdentities);\n    }\n  }\n\n  addInverseRelationshipsSync(\n    relationships: RecordRelationshipIdentity[]\n  ): void {\n    for (let relationship of relationships) {\n      const ri = serializeRecordIdentity(relationship.relatedRecord);\n      const rri = serializeRecordRelationshipIdentity(relationship);\n      const rels = this._state.inverseRelationships[ri] ?? {};\n      rels[rri] = relationship;\n      this._state.inverseRelationships[ri] = rels;\n      if (this._delta) {\n        const rels = this._delta.inverseRelationships[ri] ?? {};\n        rels[rri] = relationship;\n        this._delta.inverseRelationships[ri] = rels;\n      }\n    }\n  }\n\n  removeInverseRelationshipsSync(\n    relationships: RecordRelationshipIdentity[]\n  ): void {\n    for (let relationship of relationships) {\n      const ri = serializeRecordIdentity(relationship.relatedRecord);\n      const rri = serializeRecordRelationshipIdentity(relationship);\n      const rels = this._state.inverseRelationships[ri];\n\n      if (rels) {\n        rels[rri] = null;\n        if (this._delta) {\n          const rels = this._delta.inverseRelationships[ri] ?? {};\n          rels[rri] = null;\n        }\n      }\n    }\n  }\n\n  /////////////////////////////////////////////////////////////////////////////\n  // Protected methods\n  /////////////////////////////////////////////////////////////////////////////\n\n  protected _getInverseRelationshipsSync(\n    recordIdentity: RecordIdentity\n  ): RecordRelationshipIdentity[] {\n    let relationships = this._state.inverseRelationships[\n      serializeRecordIdentity(recordIdentity)\n    ];\n    if (relationships) {\n      return objectValues(relationships).filter((r) => r !== null);\n    } else {\n      return [];\n    }\n  }\n}\n"]}