@orbit/record-cache
Version:
Orbit base classes used to access and maintain a set of records.
99 lines • 17.3 kB
JavaScript
import { SyncOperationProcessor } from '../sync-operation-processor';
import { getInverseRelationship, getInverseRelationships, getAllInverseRelationships, getInverseRelationshipRemovalOps } from './utils/cache-integrity-utils';
/**
* An operation processor that ensures that a cache's data is consistent and
* doesn't contain any dead references.
*
* This is achieved by maintaining a mapping of reverse relationships for each
* record. When a record is removed, any references to it can also be identified
* and removed.
*/
export class SyncCacheIntegrityProcessor extends SyncOperationProcessor {
after(operation) {
switch (operation.op) {
case 'replaceRelatedRecord':
this.removeInverseRelationship(operation.record, operation.relationship, this.accessor.getRelatedRecordSync(operation.record, operation.relationship));
return [];
case 'replaceRelatedRecords':
this.removeInverseRelationships(operation.record, operation.relationship, this.accessor.getRelatedRecordsSync(operation.record, operation.relationship));
return [];
case 'removeFromRelatedRecords':
this.removeInverseRelationship(operation.record, operation.relationship, operation.relatedRecord);
return [];
case 'removeRecord':
this.removeAllInverseRelationships(operation.record);
return [];
case 'updateRecord':
this.removeAllInverseRelationships(operation.record);
return [];
default:
return [];
}
}
finally(operation) {
switch (operation.op) {
case 'replaceRelatedRecord':
this.addInverseRelationship(operation.record, operation.relationship, operation.relatedRecord);
return [];
case 'replaceRelatedRecords':
this.addInverseRelationships(operation.record, operation.relationship, operation.relatedRecords);
return [];
case 'addToRelatedRecords':
this.addInverseRelationship(operation.record, operation.relationship, operation.relatedRecord);
return [];
case 'addRecord':
this.addAllInverseRelationships(operation.record);
return [];
case 'updateRecord':
this.addAllInverseRelationships(operation.record);
return [];
case 'removeRecord':
return this.clearInverseRelationshipOps(operation.record);
default:
return [];
}
}
addInverseRelationship(record, relationship, relatedRecord) {
let inverseRelationship = getInverseRelationship(this.accessor.schema, record, relationship, relatedRecord);
if (inverseRelationship) {
this.accessor.addInverseRelationshipsSync([inverseRelationship]);
}
}
addInverseRelationships(record, relationship, relatedRecords) {
let inverseRelationships = getInverseRelationships(this.accessor.schema, record, relationship, relatedRecords);
if (inverseRelationships) {
this.accessor.addInverseRelationshipsSync(inverseRelationships);
}
}
addAllInverseRelationships(record) {
let inverseRelationships = getAllInverseRelationships(this.accessor.schema, record);
if (inverseRelationships.length > 0) {
this.accessor.addInverseRelationshipsSync(inverseRelationships);
}
}
removeInverseRelationship(record, relationship, relatedRecord) {
let inverseRelationship = getInverseRelationship(this.accessor.schema, record, relationship, relatedRecord);
if (inverseRelationship) {
this.accessor.removeInverseRelationshipsSync([inverseRelationship]);
}
}
removeInverseRelationships(record, relationship, relatedRecords) {
let inverseRelationships = getInverseRelationships(this.accessor.schema, record, relationship, relatedRecords);
if (inverseRelationships.length > 0) {
this.accessor.removeInverseRelationshipsSync(inverseRelationships);
}
}
removeAllInverseRelationships(record) {
const currentRecord = this.accessor.getRecordSync(record);
if (currentRecord) {
const inverseRelationships = getAllInverseRelationships(this.accessor.schema, currentRecord);
if (inverseRelationships.length > 0) {
this.accessor.removeInverseRelationshipsSync(inverseRelationships);
}
}
}
clearInverseRelationshipOps(record) {
return getInverseRelationshipRemovalOps(this.accessor.schema, this.accessor.getInverseRelationshipsSync(record));
}
}
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When a record is removed, any references to it can also be identified\n * and removed.\n */\nexport class SyncCacheIntegrityProcessor extends SyncOperationProcessor {\n  after(operation: RecordOperation): RecordOperation[] {\n    switch (operation.op) {\n      case 'replaceRelatedRecord':\n        this.removeInverseRelationship(\n          operation.record,\n          operation.relationship,\n          this.accessor.getRelatedRecordSync(\n            operation.record,\n            operation.relationship\n          )\n        );\n        return [];\n\n      case 'replaceRelatedRecords':\n        this.removeInverseRelationships(\n          operation.record,\n          operation.relationship,\n          this.accessor.getRelatedRecordsSync(\n            operation.record,\n            operation.relationship\n          )\n        );\n        return [];\n\n      case 'removeFromRelatedRecords':\n        this.removeInverseRelationship(\n          operation.record,\n          operation.relationship,\n          operation.relatedRecord\n        );\n        return [];\n\n      case 'removeRecord':\n        this.removeAllInverseRelationships(operation.record);\n        return [];\n\n      case 'updateRecord':\n        this.removeAllInverseRelationships(operation.record);\n        return [];\n\n      default:\n        return [];\n    }\n  }\n\n  finally(operation: RecordOperation): RecordOperation[] {\n    switch (operation.op) {\n      case 'replaceRelatedRecord':\n        this.addInverseRelationship(\n          operation.record,\n          operation.relationship,\n          operation.relatedRecord\n        );\n        return [];\n\n      case 'replaceRelatedRecords':\n        this.addInverseRelationships(\n          operation.record,\n          operation.relationship,\n          operation.relatedRecords\n        );\n        return [];\n\n      case 'addToRelatedRecords':\n        this.addInverseRelationship(\n          operation.record,\n          operation.relationship,\n          operation.relatedRecord\n        );\n        return [];\n\n      case 'addRecord':\n        this.addAllInverseRelationships(operation.record);\n        return [];\n\n      case 'updateRecord':\n        this.addAllInverseRelationships(operation.record);\n        return [];\n\n      case 'removeRecord':\n        return this.clearInverseRelationshipOps(operation.record);\n\n      default:\n        return [];\n    }\n  }\n\n  protected addInverseRelationship(\n    record: RecordIdentity,\n    relationship: string,\n    relatedRecord: RecordIdentity | null\n  ): void {\n    let inverseRelationship = getInverseRelationship(\n      this.accessor.schema,\n      record,\n      relationship,\n      relatedRecord\n    );\n    if (inverseRelationship) {\n      this.accessor.addInverseRelationshipsSync([inverseRelationship]);\n    }\n  }\n\n  protected addInverseRelationships(\n    record: RecordIdentity,\n    relationship: string,\n    relatedRecords: RecordIdentity[]\n  ): void {\n    let inverseRelationships = getInverseRelationships(\n      this.accessor.schema,\n      record,\n      relationship,\n      relatedRecords\n    );\n    if (inverseRelationships) {\n      this.accessor.addInverseRelationshipsSync(inverseRelationships);\n    }\n  }\n\n  protected addAllInverseRelationships(record: InitializedRecord): void {\n    let inverseRelationships = getAllInverseRelationships(\n      this.accessor.schema,\n      record\n    );\n    if (inverseRelationships.length > 0) {\n      this.accessor.addInverseRelationshipsSync(inverseRelationships);\n    }\n  }\n\n  protected removeInverseRelationship(\n    record: RecordIdentity,\n    relationship: string,\n    relatedRecord?: RecordIdentity | null\n  ): void {\n    let inverseRelationship = getInverseRelationship(\n      this.accessor.schema,\n      record,\n      relationship,\n      relatedRecord\n    );\n    if (inverseRelationship) {\n      this.accessor.removeInverseRelationshipsSync([inverseRelationship]);\n    }\n  }\n\n  protected removeInverseRelationships(\n    record: RecordIdentity,\n    relationship: string,\n    relatedRecords?: RecordIdentity[]\n  ): void {\n    let inverseRelationships = getInverseRelationships(\n      this.accessor.schema,\n      record,\n      relationship,\n      relatedRecords\n    );\n    if (inverseRelationships.length > 0) {\n      this.accessor.removeInverseRelationshipsSync(inverseRelationships);\n    }\n  }\n\n  protected removeAllInverseRelationships(record: RecordIdentity): void {\n    const currentRecord = this.accessor.getRecordSync(record);\n    if (currentRecord) {\n      const inverseRelationships = getAllInverseRelationships(\n        this.accessor.schema,\n        currentRecord\n      );\n      if (inverseRelationships.length > 0) {\n        this.accessor.removeInverseRelationshipsSync(inverseRelationships);\n      }\n    }\n  }\n\n  protected clearInverseRelationshipOps(\n    record: RecordIdentity\n  ): RecordOperation[] {\n    return getInverseRelationshipRemovalOps(\n      this.accessor.schema,\n      this.accessor.getInverseRelationshipsSync(record)\n    );\n  }\n}\n"]}