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    <title>JSDoc: Source: entities/entity.js</title>

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    <h1 class="page-title">Source: entities/entity.js</h1>

    
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        <article>
            <pre class="prettyprint source linenums"><code>"use strict";

const utils = require('../services/utils');

class Entity {
    /**
     * @param {object} [row] - database row representing given entity
     */
    constructor(row = {}) {
        for (const key in row) {
            // ! is used when joint-fetching notes and note_contents objects for performance
            if (!key.startsWith('!')) {
                this[key] = row[key];
            }
        }

        if ('isDeleted' in this) {
            this.isDeleted = !!this.isDeleted;
        }
    }

    beforeSaving() {
        this.generateIdIfNecessary();

        const origHash = this.hash;

        this.hash = this.generateHash();

        if (this.forcedChange) {
            this.isChanged = true;
            delete this.forcedChange;
        }
        else {
            this.isChanged = origHash !== this.hash;
        }
    }

    generateIdIfNecessary() {
        if (!this[this.constructor.primaryKeyName]) {
            this[this.constructor.primaryKeyName] = utils.newEntityId();
        }
    }

    generateHash() {
        let contentToHash = "";

        for (const propertyName of this.constructor.hashedProperties) {
            contentToHash += "|" + this[propertyName];
        }

        return utils.hash(contentToHash).substr(0, 10);
    }

    async save() {
        await require('../services/repository').updateEntity(this);

        return this;
    }
}

module.exports = Entity;</code></pre>
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