@cyber-rom/nestjs-scylladb/lib/orm/decorators/column.decorator.ts

Based on https://www.npmjs.com/package/@ouato/nestjs-express-cassandra With support columns name mapping

import {Logger} from '@nestjs/common';
import {BeforeSave} from './listeners';
import {ColumnOptions} from '../interfaces';
import {uuid, timeuuid} from '../utils/db.utils';
import {
    addOptions,
    getOptions,
    hasAttribute,
    addAttribute,
    getColumnName,
    setTransformMapping,
} from '../utils/decorator.utils';

export function Column(options: ColumnOptions): PropertyDecorator {
    return (target: object, propertyName: string) => {
        addAttribute(target, propertyName, options);
    };
}

export function GeneratedUUidColumn(type: 'uuid' | 'timeuuid' = 'uuid', name?: string): PropertyDecorator {
    return (target: object, propertyName: string) => {
        if (hasAttribute(target, propertyName)) {
            Logger.warn(`Already exist attribute for property`, undefined, 'ScyllaModule');
        }
        Column({
            name,
            type,
            default: {$db_function: type === 'timeuuid' ? 'now()' : 'uuid()'},
        })(target, propertyName);
        BeforeSave()(target, propertyName, {
            value: (...args: any[]) => {
                const instance = args[0];
                if (instance !== null && !instance[propertyName]) {
                    instance[propertyName] = type === 'timeuuid' ? timeuuid() : uuid();
                }
            },
        });
    };
}

export function VersionColumn(columnName?: string): PropertyDecorator {
    return (target: object, propertyName: string) => {
        if (hasAttribute(target, propertyName)) {
            Logger.warn(`Already exist attribute for property (version column)`, undefined, 'ScyllaModule');
        }
        if (columnName) {
            setTransformMapping(target, propertyName, columnName);
        }
        addOptions(target, {options: {versions: {key: columnName || propertyName}}});
    };
}

export function CreateDateColumn(columnName?: string): PropertyDecorator {
    return (target: object, propertyName: string) => {
        if (hasAttribute(target, propertyName)) {
            Logger.warn(`Already exist attribute for property (create date column)`, undefined, 'ScyllaModule');
        }
        if (columnName) {
            setTransformMapping(target, propertyName, columnName);
        }
        addOptions(target, {
            options: {timestamps: {createdAt: columnName || propertyName}},
        });
    };
}

export function UpdateDateColumn(columnName?: string): PropertyDecorator {
    return (target: object, propertyName: string) => {
        if (hasAttribute(target, propertyName)) {
            Logger.warn(`Already exist attribute for property (update date column)`, undefined, 'ScyllaModule');
        }
        if (columnName) {
            setTransformMapping(target, propertyName, columnName);
        }
        addOptions(target, {
            options: {timestamps: {updatedAt: columnName || propertyName}},
        });
    };
}

export function IndexColumn(): PropertyDecorator {
    return (target: object, propertyName: string) => {
        const columnName = getColumnName(target, propertyName);
        const {indexes = []} = getOptions(target) || {indexes: []};
        if ((indexes as string[]).some((value) => value === columnName)) {
            return;
        }
        addOptions(target, {indexes: [...indexes, columnName]});
    };
}