/**
* QueryExecutedEvent Domain Event
*
* Represents an event that occurs when a query has been executed.
* Contains information about the execution result and performance metrics.
*/
export class QueryExecutedEvent {
constructor(
readonly queryId: string,
readonly sql: string,
readonly executionTime: number,
readonly rowCount: number,
readonly success: boolean,
readonly errorMessage?: string,
readonly timestamp: Date = new Date()
) {}
/**
* Checks if the query execution was slow based on a threshold.
* @param threshold Threshold in milliseconds
* @returns boolean indicating if the query was slow
*/
isSlow(threshold: number = 1000): boolean {
return this.executionTime > threshold;
}
/**
* Creates a summary of the execution event.
* @returns Summary string
*/
getSummary(): string {
return `Query ${this.success ? 'succeeded' : 'failed'} in ${this.executionTime}ms with ${this.rowCount} rows`;
}
}
