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QueryResultCacheFactory.ts
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36 lines (27 loc) · 1.27 KB
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import {RedisQueryResultCache} from "./RedisQueryResultCache";
import {DbQueryResultCache} from "./DbQueryResultCache";
import {QueryResultCache} from "./QueryResultCache";
import {Connection} from "../connection/Connection";
/**
* Caches query result into Redis database.
*/
export class QueryResultCacheFactory {
// -------------------------------------------------------------------------
// Constructor
// -------------------------------------------------------------------------
constructor(protected connection: Connection) {
}
// -------------------------------------------------------------------------
// Public Methods
// -------------------------------------------------------------------------
/**
* Creates a new query result cache based on connection options.
*/
create(): QueryResultCache {
if (!this.connection.options.cache)
throw new Error(`To use cache you need to enable it in connection options by setting cache: true or providing some caching options. Example: { host: ..., username: ..., cache: true }`);
if ((this.connection.options.cache as any).type === "redis")
return new RedisQueryResultCache(this.connection);
return new DbQueryResultCache(this.connection);
}
}