modelling/lib/Persistent.ts

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import { Assignable, Serializable } from './interfaces';
export abstract class Persistent implements Assignable, Serializable {
private _data: Record<string, unknown> = {};
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protected readonly properties: Record<string, string> = {};
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public assign (a: Assignable): void {
this.assign_object (a.to_object ());
}
public assign_to (a: Assignable): void {
a.assign (this);
}
public assign_object (obj: Record<string, unknown>): void {
for (const key of Object.keys (obj)) {
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const prop = this.properties[key];
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if (typeof prop !== 'undefined' && typeof obj[key] === prop)
this._data[key] = obj[key];
}
}
public to_object (): Record<string, unknown> {
return this._data;
}
public serialize (formatted = false): string {
if (formatted)
return JSON.stringify (this.to_object ());
return JSON.stringify (this.to_object (), null, 2);
}
public set (key: string, value: unknown): void {
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const prop = this.properties[key];
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if (typeof prop !== 'undefined' && typeof value === prop)
this._data[key] = value;
}
public get (key: string): unknown {
return this._data[key];
}
}