Class: PersistenceRegistration

Methods

addEventListener(type, listener)

Add an event listener for how an event will be handled. Currently, the only supported event is the "fetch" event.

Parameters:

Name	Type	Description
type	string	A string representing the event type to listen for. Supported value is "fetch" which will trigger the function with a FetchEvent once a fetch occurs.
listener	function	The object that receives a notification when an event of the specified type occurs

Examples

// Using Default Response Proxy
var ResponseProxy = defaultResponseProxy.getResponseProxy(
   {
      fetchStrategy: fetchStrategies.getCacheFirstStrategy()
});
PersistenceManager.register({scope:'/employee'}).then(function(registration){
   PersistenceRegistration.addEventListener('fetch',ResponseProxy.getFetchEventListener());
});

// Using a custom event listener

//using defaultResponseProxy.getResponseProxy to set up a shreading method
var defaultItemResponseProxy = defaultResponseProxy.getResponseProxy(
  {
    jsonProcessor:
      {
        shredder: simpleJsonShredding.getShredder('item', 'ID'),
        unshredder: simpleJsonShredding.getUnshredder()
      },
    queryHandler: queryHandlers.getSimpleQueryHandler('item', 'limit')
  });
persistenceManager.register({
  scope: '/item'
}).then(function (registration) {
  registration.addEventListener('fetch', function (event) {
    // Using the event's respondWith method, return a new promise
    // that will resolve into the response from the persistence framework
    event.respondWith(new Promise(function (resolve, reject) {
      defaultItemResponseProxy.processRequest(event.request).then(function (response) {
        if (response != null) {
          // Check to see if the response from the cache is stale
          if ((new Date(response.headers.get('x-oracle-jscpt-cache-expiration-date'))).getTime() < (new Date()).getTime()) {
            // handle response
          } else {
            // handle stale response
          }
        }
        resolve(response);
      });
    }));
  })});

unregister() → {Promise.<Boolean>}

Unregisters the registration. Will finish any ongoing operations before it is unregistered.

Returns:

Promise resolves with a boolean indicating whether the scope has been unregistered or not

• true if successfully unregistered
• false if unsuccessful

Type

Promise.<Boolean>

Example

PersistenceManager.getRegistration('https://www.oracle.com/location').then(function(registration){
    registration.unregister().then(function(registrationStatus){
     // registrationStatus is boolean based on if it was succuessful or not
   })
})