@TOTVS/STORAGE

This Package @totvs/storage provides a service for storing data on the local device,

This package is compatible with Angular, React and Javascript projects.

Installation

Using npm:
``$ npm install --save @totvs/storage `

`js
// using ES6 modules
import { TotvsStorage } from @totvs/storage;
var storage = new TotvsStorage();

// using CommonJS modules
var storageInstance = require('@totvs/http')
var storage = new storageInstance.TotvsStorage('your bank name');
`

Methods

appendArrayToArray


Searches for a list stored by the key and concatenates it with the list passed by parameter.
` js

const clients = [ { name: 'Marie', age: 23 }, { name: 'Pether', age: 39 }];

this.storage.appendArrayToArray('myKey', clients).subscribe( res => {
console.log(res);
});
`

clear


Removes all items from the database and delete the storage
` js

this.storage.clear().subscribe( res => {
console.log(res);
});
`

exists


Checks whether a value exists within a given key.
` js

this.storage.exists('myKey').subscribe( res => {
console.log(res);
});
`

get


Returns the value stored in a given key.
` js

this.storage.get('myKey', false).subscribe( res => {
console.log(res);
});
`

getAll


Returns the value stored in a given key.
` js

this.storage.getAll().subscribe( res => {
console.log(res);
});
`

getItemAndRemove

Removes the first item from a list from the key.

getItemByField

Searches for the first object found within a list by the value of a field.
`js
const clients = [ { name: 'Marie', age: 23 }, { name: 'Pether', age: 39 }];

this.thfStorageService.set('clientKey', clients).then(() => {});

...

this.thfStorageService.getItemByField('clientKey', 'name', 'Marie').then(client => {
console.log(client);
// console.log result: { name: 'Marie', age: 23 }
});
`

keys

List with all keys stored.

` js

this.storage.keys().subscribe( res => {
console.log(res);
});
`

length

Number of keys stored.

` js

this.storage.length().subscribe( res => {
console.log(res);
});
`

limitedCallWrap

Used to manage the locking and unlocking of resources in the TotvsStorage. Waiting to release the resource that participates in this behavior and later involves the resource passed as a parameter in a lock and unlock behavior.

This method behaves the same as using the methods together: TotvsStorage.requestIdlePromise (), TotvsStorage.lock (), and TotvsStorage.unlook ().

lock

Increments a value in the Totvs Storage lock queue. Used in conjunction with the unlock method to be able to control the execution of a given task with TotvsStorage.requestIdlePromise ().

remove

Removes a value associated with a key.

` js

this.storage.remove('myKey').subscribe( res => {
console.log(res);
});
`

removeItemFromArray


Removes an object from a list stored by the value of a property.
` js

this.storage.removeItemFromArray('myKey', 'name', 'Marie').subscribe( res => {
console.log(res);
});
`

requestIdlePromise

Method that checks whether the access to the configured database is released.

Used in conjunction with the lock () and unlock () methods between tasks that can not be performed in parallel, so as not to cause inconsistencies in the data.

`js
// Waiting for release to continue
await this.storage.requestIdlePromise();

this.storage.lock();

// Performs a task that will read and / or write to the configured database.

this.storage.unlock();
`

It is important to always use it before executing the lock () and unlock () methods to ensure that the task will only be executed if access is free.

set


Writes a value to a given key.
` js

this.storage.set('myKey', 'this is my content').subscribe( res => {
console.log(res);
});
``

unlock

Decrements a value in the lock queue. Used in conjunction with the lock method to control the execution of a given task with TotvsStorage.requestIdlePromise ().