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d3_indexdb3.html
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d3_indexdb3.html
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<html>
<body>
<script>
function appDB(databaseName="appDatabase",objectStoreName="appObjectStore"){
this.databaseName = databaseName;
this.lastObjectStoreName = objectStoreName;
if(!this.objectStoreNameArray) this.objectStoreNameArray = [];this.objectStoreNameArray.push(objectStoreName);
if(!this.databaseVersion) this.databaseVersion = 1;
this.addObjectStore = function (objectStoreName=this.lastObjectStoreName){
if(!(this.objectStoreNameArray.includes(objectStoreName))) {this.objectStoreNameArray.push(objectStoreName); this.databaseVersion += 1;}
var that = this;
request = window.indexedDB.open(that.databaseName,that.databaseVersion);
request.onupgradeneeded = function(event){
var db = event.target.result;
if (!db.objectStoreNames.contains(objectStoreName)) {
var objectStore = db.createObjectStore(objectStoreName,{ autoIncrement : true });
console.log(`${objectStoreName} Object Store Successfully created with version number ${that.databaseVersion}`);
that.lastObjectStoreName = objectStoreName;
}
console.log(`${objectStoreName} Object Store Successfully added with version number ${that.databaseVersion}`);
};
request.onsuccess = function(event){
db = event.target.result;
console.log(`${objectStoreName} Object Store in ${that.databaseName} successfully opened with version number ${that.databaseVersion}`);
db.close();
};
request.onerror = function(event) {
console.log("Why didn't you allow my web app to use IndexedDB?!"+event.target.errorCode);
};
}
this.addObjectStore();
}
//Everything else will be prototype now. I will freeze appDB
//Data to be added has to be an array of objects, or a single object
appDB.prototype.addData = function (dataArray=[],objectStoreName=this.lastObjectStoreName){
var that = this;
request = window.indexedDB.open(that.databaseName,that.databaseVersion);
request.onsuccess = function(event){
db = event.target.result;
console.log(`${objectStoreName} Object Store in ${that.databaseName} successfully opened with version number ${that.databaseVersion}`);
var tx = db.transaction(objectStoreName, "readwrite");
var store = tx.objectStore(objectStoreName);
// dataArray=[`{title: "Quarry Memories", author: "Fred", isbn: 123456}`,`{title: "Water Buffaloes", author: "Fred", isbn: 234567}`,`title: "Bedrock Nights", author: "Barney", isbn: 345678}`];
if (dataArray.constructor===Array){
dataArray.forEach(function(value, key) {
store.add(value);
});
}
if (typeof dataArray == "object") {store.add(dataArray)};
db.close();
tx.oncomplete = function() {
console.log("All requests have succeeded and the transaction has committed");
};
};
}
appDB.prototype.getData = function (dataKey,objectStoreName=this.lastObjectStoreName){
var that = this;
request = window.indexedDB.open(that.databaseName,that.databaseVersion);
request.onsuccess = function(event){
db = event.target.result;
var tx = db.transaction(objectStoreName, "readwrite");
var store = tx.objectStore(objectStoreName);
var dataRequest = store.get(dataKey);
db.close();
dataRequest.onsuccess = function(dataEvent) {
console.log(dataRequest.result);
};
};
}
appDB.prototype.updateData = function (dataKey,updatedData,objectStoreName=this.lastObjectStoreName){
var that = this;
request = window.indexedDB.open(that.databaseName,that.databaseVersion);
request.onsuccess = function(event){
var db = event.target.result;
var tx = db.transaction(objectStoreName, "readwrite");
var store = tx.objectStore(objectStoreName);
var dataRequest = store.get(dataKey);
dataRequest.onsuccess = function(dataEvent) {
var oldData = dataEvent.target.result;
var newData = updatedData;
var requestUpdate = store.put(newData,dataKey);
requestUpdate.onsuccess = function(event) {
console.log("Data is successfully updated");
db.close();
};
};
};
}
appDB.prototype.getAllData = function (objectStoreName=this.lastObjectStoreName){
var that = this;
request = window.indexedDB.open(that.databaseName,that.databaseVersion);
request.onsuccess = function(event){
db = event.target.result;
var tx = db.transaction(objectStoreName, "readwrite");
var store = tx.objectStore(objectStoreName);
var dataRequest = store.getAll();
db.close();
dataRequest.onsuccess = function(dataEvent) {
console.log(dataRequest.result);
};
};
};
appDB.prototype.deleteData = function (dataKey,objectStoreName=this.lastObjectStoreName){
var that = this;
request = window.indexedDB.open(that.databaseName,that.databaseVersion);
request.onsuccess = function(event){
db = event.target.result;
var tx = db.transaction(objectStoreName, "readwrite");
var store = tx.objectStore(objectStoreName);
var dataRequest = store.delete(dataKey);
db.close();
dataRequest.onsuccess = function(dataEvent) {
console.log("Data was deleted");
};
};
}
</script>
</body>
</html>