@nivinjoseph/n-data/src/exceptions/db-exception.ts

Data access library for Postgres based on Knex

import { Exception } from "@nivinjoseph/n-exception";
import { OperationType } from "./operation-type.js";
import { given } from "@nivinjoseph/n-defensive";


export class DbException extends Exception
{
    private readonly _operation: string;
    private readonly _sql: string;
    private readonly _params: Array<any>;


    public get operation(): string { return this._operation; }
    public get sql(): string { return this._sql; }
    // eslint-disable-next-line @typescript-eslint/no-unsafe-return
    public get params(): ReadonlyArray<any> { return this._params; }


    public constructor(operationType: OperationType, sql: string, params: ReadonlyArray<any>, err?: Error)
    {
        given(operationType, "operationType").ensureHasValue();
        given(sql, "sql").ensureHasValue();
        given(params, "params").ensureHasValue();

        const operation = operationType === OperationType.query ? "query" : "command";
        let paramsString = null;
        try
        {
            paramsString = JSON.stringify(params);
        }
        catch
        {
            // deliberate suppress?
        }
        if (paramsString == null)
            paramsString = `[${params}]`;

        const  message = `Error during ${operation} operation with sql "${sql}" and params ${paramsString}.`;
        super(message, err);

        this._operation = operation;
        this._sql = sql;
        this._params = [...params];
    }
}