objection-paginator/dist/mjs/column.js

Paginated queries for Objection.js

import { ConfigurationError } from "./configuration-error.js";
export class Column {
    constructor(columnName, tableName) {
        this.columnName = columnName;
        this.tableName = tableName;
    }
    static validate(str) {
        if (this._columnPattern.test(str))
            return str;
        throw new ConfigurationError(`Invalid column identifier '${str}'`);
    }
    static parse(str) {
        const [columnName, tableName] = str.split(".").reverse();
        return new this(columnName, tableName);
    }
    static extractFromSql(sql, omitTableName = false) {
        const match = this._sqlPattern.exec(sql);
        if (!match)
            return null;
        const [, columnName, tableName] = match;
        if (omitTableName)
            return new this(columnName);
        return new this(columnName, tableName);
    }
    static toRaw(str, qry) {
        return this.parse(str).toRaw(qry).serialize();
    }
    clone() {
        return new Column(this.columnName, this.tableName);
    }
    getMappingQuery(qry) {
        return qry.clone().clear(/.*/)
            .select(this.columnName)
            .from(this.tableName || "some_table");
    }
    getMappingSql(qry) {
        return this.getMappingQuery(qry).toKnexQuery().toSQL().sql;
    }
    toRaw(qry) {
        const sql = this.getMappingSql(qry);
        const raw = Column.extractFromSql(sql, !this.tableName);
        return raw || this.clone();
    }
    serialize() {
        const terms = [this.columnName];
        if (this.tableName)
            terms.unshift(this.tableName);
        return terms.join(".");
    }
}
Column._columnPattern = /^(?:[^.]+\.)?[^.]+$/;
Column._sqlPattern = /^select (["`].*?["`]) from (["`].*?["`])$/;
//# sourceMappingURL=column.js.map