@flavoai/fastfold/dist/database/adapters/base.js

Zero-boilerplate backend for React apps with auto-generated CRUD and declarative security

export class BaseDatabaseAdapter {
    connected = false;
    ensureConnected() {
        if (!this.connected) {
            throw new Error('Database not connected. Call connect() first.');
        }
    }
    mapFieldType(fieldType) {
        // Override in specific adapters
        switch (fieldType) {
            case 'string': return 'TEXT';
            case 'number': return 'REAL';
            case 'boolean': return 'BOOLEAN';
            case 'date': return 'DATETIME';
            case 'json': return 'JSON';
            default: return 'TEXT';
        }
    }
    buildWhereClause(where) {
        if (!where || Object.keys(where).length === 0) {
            return { sql: '', values: [] };
        }
        const conditions = [];
        const values = [];
        for (const [key, value] of Object.entries(where)) {
            if (value === null) {
                conditions.push(`${key} IS NULL`);
            }
            else if (Array.isArray(value)) {
                conditions.push(`${key} IN (${value.map(() => '?').join(', ')})`);
                values.push(...value);
            }
            else {
                conditions.push(`${key} = ?`);
                values.push(value);
            }
        }
        return {
            sql: `WHERE ${conditions.join(' AND ')}`,
            values
        };
    }
    buildOrderByClause(orderBy) {
        if (!orderBy || Object.keys(orderBy).length === 0) {
            return '';
        }
        const orders = Object.entries(orderBy)
            .map(([field, direction]) => `${field} ${direction.toUpperCase()}`)
            .join(', ');
        return `ORDER BY ${orders}`;
    }
}
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