sqlmongoose/dist/esm/QueryBuilder.js

Mongoose-like schemas and models for SQLite3

export class QueryBuilder {
    constructor(tableName) {
        this.tableName = tableName;
        this.conditions = [];
        this.values = [];
        this.orderByValues = {};
        this.includeFields = [];
    }
    where(condition) {
        // ...existing query building logic...
        return this;
    }
    select(...fields) {
        this.includeFields = fields;
        return this;
    }
    limit(limit) {
        this.limitValue = limit;
        return this;
    }
    offset(offset) {
        this.offsetValue = offset;
        return this;
    }
    orderBy(field, direction) {
        this.orderByValues[field] = direction;
        return this;
    }
    build() {
        const fields = this.includeFields.length > 0
            ? this.includeFields.join(', ')
            : '*';
        let sql = `SELECT ${fields} FROM ${this.tableName}`;
        if (this.conditions.length > 0) {
            sql += ` WHERE ${this.conditions.join(' AND ')}`;
        }
        if (Object.keys(this.orderByValues).length > 0) {
            const orderClauses = Object.entries(this.orderByValues)
                .map(([field, direction]) => `${field} ${direction}`)
                .join(', ');
            sql += ` ORDER BY ${orderClauses}`;
        }
        if (this.limitValue !== undefined) {
            sql += ` LIMIT ${this.limitValue}`;
            if (this.offsetValue !== undefined) {
                sql += ` OFFSET ${this.offsetValue}`;
            }
        }
        return { sql, values: this.values };
    }
}