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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 | 1x 1x 16x 18x 82x 82x 53x 1x 52x 2x 50x 1x 49x 1x 4x 4x 4x 8x 8x 1x 7x 7x 47x 47x 1x 6x | import 'reflect-metadata';
import type { ObjectLike } from './lib/props';
import type { ColumnProps, EntityProps } from './lib/types';
const columnKey = Symbol('column');
const entityKey = Symbol('entity');
function getEntityMeta<T extends ObjectLike>(
target: T,
): EntityProps | undefined {
return Reflect.getMetadata(entityKey, target.constructor.prototype);
}
function Column(props: ColumnProps): PropertyDecorator {
return Reflect.metadata(columnKey, props);
}
function getColumnMeta<T>(
target: T,
propertyKey: keyof T,
): ColumnProps | undefined {
Iif (typeof propertyKey === 'number') {
throw new Error('no numeric objkey is allowed');
}
return Reflect.getMetadata(columnKey, target as object, propertyKey);
}
function validateColumnMeta(props?: ColumnProps): boolean {
if (!props) {
return false;
}
if (props.canBeNull && props.primaryKey) {
return false;
}
if (
props.foreignKey &&
(!props.dataType ||
props.dataType === 'float' ||
props.dataType === 'double' ||
props.dataType === 'blob' ||
props.dataType === 'boolean')
) {
return false;
}
return true;
}
const Entity = (name: string, version = 0): ClassDecorator => {
return (target) => {
const metadata = {
name,
version,
};
Reflect.defineMetadata(entityKey, metadata, target.prototype);
};
};
function validateEntity<T extends ObjectLike>(target: T): boolean {
const meta = getEntityMeta(target);
if (!meta) {
return false;
}
const keys = Object.keys(target) as (keyof T)[];
for (const key of keys) {
const cMeta = getColumnMeta(target, key);
if (cMeta && !validateColumnMeta(cMeta)) {
return false;
}
}
return true;
}
export {
Entity,
getEntityMeta,
validateEntity,
Column,
getColumnMeta,
validateColumnMeta,
columnKey,
entityKey,
};
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