On Monday, January 28, 2019 at 12:49:41 AM UTC+1, rhodebump wrote:
Thanks, I did make some progress. I dug around a little in the javadoc and found the IndexedDbGlobal, which I was able to use to create a new database.
elemental2.indexeddb.
IDBFactory indexedDB = elemental2.indexeddb. IndexedDbGlobal.indexedDB; elemental2.indexeddb.
IDBOpenDBRequest openDBRequest = indexedDB.open("mydbtest", 1.0);
So far so good.
With a open database call, I get a returned object of elemental2.indexeddb.
IDBOpenDBRequest (https://static.javadoc.io/ com.google.elemental2/ )elemental2-indexeddb/1.0.0- RC1/elemental2/indexeddb/ IDBOpenDBRequest.html
In the google documentation that I have found that describes the indexedDB open operation, https://developers.
google.com/web/ilt/pwa/ working-with-indexeddb# opening_a_database
They provide the following code:
var dbPromise = idb.open('test-db2', 1, function(upgradeDb) {
console.log('making a new object store');
if (!upgradeDb.objectStoreNames.contains ('firstOS')) {
upgradeDb.createObjectStore('firstOS' );
}
});
I want to register a function to execute when the database is upgraded. I see there is a openDBRequest.onupgradeneeded(), but I just can't the syntax right.
elemental2.indexeddb.IDBFactory indexedDB = elemental2.indexeddb. IndexedDbGlobal.indexedDB; elemental2.indexeddb.
IDBOpenDBRequest openDBRequest= indexedDB.open("mydbtest", 1.0);
//how to i call a function for upgrade? I want to create some object stores.
openDBRequest. onupgradeneeded = doUpgrade();
openDBRequest.onupgradeneeded = new OnupgradeneededFn() {
@Override
public Object onInvoke(IDBVersionChangeEvent event) {
doUpgrade();
return Js.undefined(); // that value will likely be ignored anyway
}
};openDBRequest.onupgradeneeded = event -> {
doUpgrade();
return Js.undefined();
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