db-conn-pgsql/dist/PgSqlConnection.js

Database Connecton Postgres SQL

import { PgQueryUtils } from "./PgQueryUtils.js";
import { PgSqlResultSet } from "./PgSqlResultSet.js";
import Cursor from 'pg-cursor';
import { toAnsiTypeColumns, toAnsiValueRows } from "./PgSqlUtils.js";
export class PgSqlConnection {
    client;
    oUtils;
    constructor(client) {
        this.client = client;
        this.oUtils = new PgQueryUtils();
    }
    async close() {
        if (this.client.release) {
            this.client.release();
            delete this.client;
            return;
        }
        await this.client.end();
        delete this.client;
    }
    async execute(sql, params) {
        const retParams = this.oUtils.formatParams(sql, params);
        const newSql = retParams.sql;
        const newParams = retParams.params;
        return new Promise((resolve, reject) => {
            this.client.query(newSql, newParams, (error, result) => {
                if (error) {
                    reject(error);
                    return;
                }
                let rt = {};
                rt.metadata = toAnsiTypeColumns(result.fields);
                rt.affectedRows = result.rowCount;
                rt.data = toAnsiValueRows(result.rows, rt.metadata);
                resolve(rt);
            });
        });
    }
    async executeQuery(sql, params) {
        const rt = await this.execute(sql, params);
        if (rt.data === undefined) {
            throw new Error("No data returned");
        }
        return rt.data;
    }
    async executeQueryStream(sql, params) {
        const cursor = this.client.query(new Cursor(sql, params));
        const rs = new PgSqlResultSet(cursor, this.client);
        await rs.init();
        return rs;
    }
    async setAutoCommit(autoCommit) {
        if (!autoCommit) {
            const rt = await this.execute("begin");
        }
    }
    async commit() {
        const rt = await this.execute("commit");
    }
    async rollback() {
        const rt = await this.execute("rollback");
    }
}
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