Suppose I have an IndexedDB collection with name items. All items have fields:
id
name
revision
revision field is a number field. I need to retrieve an item with max value of revision (or at least just retrive max revision value). What is the best way to do it?
First thing you need to do is create index on the revision field.
Then you need a search function which will use that index and open the index with inverse order of the objects. Then the first object will be the object you are looking for.
var index = objectStore.index('revision');
index.openCursor(null, 'prev');
The null states that you are searching for all values not a specific one, and the second parameter is the direction of the search.
Here is the sample code:
function getMaxNumber (callback) {
var openReq = indexedDB.open(baseName);
openReq.onsuccess = function() {
var db = openReq.result;
var transaction = db.transaction(objectStoreName, 'readonly');
var objectStore = transaction.objectStore(objectStoreName);
var index = objectStore.index('revision');
var openCursorRequest = index.openCursor(null, 'prev');
var maxRevisionObject = null;
openCursorRequest.onsuccess = function (event) {
if (event.target.result) {
maxRevisionObject = event.target.result.value; //the object with max revision
}
};
transaction.oncomplete = function (event) {
db.close();
if(callback) //you'll need a calback function to return to your code
callback(maxRevisionObject);
};
}
}
Since the IndexedDB api is async you would need a callback function to return the value to your code.
Related
Have an array which is being compiled based on user input selection (checkbox and radio buttons)
This is being compiled using an input on change function.
The array is then used to check if values in the array match data attributes referenced within each card, and those which match, show the respective card.
This is working fine.
I am now trying to get the same functionality, but instead of being based on user input, the result is being compiled based on user query string (string is also compiled from the user input - effectively saving a query for using to return to page with results without having to enter the checkbox values again). This function has a lot of if true, push which I would like to re-use instead of re-write. I have simplified here.
Problem I am having is using the same function I built for show/hide the card based on user input with the query string.
// Set Globals:
var arr = []
function buildResults() {
// Build query based on input values and push into array:
$("input").on("change", function() {
var arr = [];
$(":checkbox").each(function() {
if ($(this).is(":checked")) {
arr.push($(this).val());
}
});
$(":radio").each(function() {
if ($(this).is(":checked")) {
arr.push($(this).val());
}
});
console.log(arr);
// Join array using unique string
var vals = arr.join("--");
// Set URL to pin query to and begin pushing values to string:
var urlBegin = "https://thisisatest/?results=";
var str = vals;
$("#val").text(urlBegin + vals);
$("#query").text(vals);
$("#copyTarget").val(urlBegin + vals);
userSelection = arr;
resRec();
});
}
buildResults();
function resRec() {
// Show div based on user checkbox values:
var user = userSelection;
var dataRec = [];
var recordResultCount = 0;
console.log(user);
var first = user.includes("123");
if (first == true) {
dataRec.push(123456);
}
var recordResults = [...new Set(dataRec)];
recordResultCount = recordResults.length;
console.log(recordResultCount);
// Show only the records needed:
$(".card").each(function() {
var recordFound = $.inArray($(this).data("recordid"), dataRec);
if (recordFound === -1) {
$(this).parent().addClass("destroy");
} else {
$(this).removeClass("destroy");
}
});
}
function resQuery() {
var urlQuery = window.location.href.match(/results=(.+)/)[1];
console.log(urlQuery);
user = urlQuery;
}
// If user enters page via unique query only, and not from page start:
$(function() {
if (window.location.pathname == "https://thisisatest/?results=") {
// reuse resRec() here, but using urlQuery and not userSelection;
var user = resQuery();
resRec();
// and show only the cards which match the results built from query
}
});
resQuery();
Function reuse is still new to me, and while I think my logic is on the correct path, I am still getting resRec() not defined.
Thank you.
Im using the following code,
jQuery.each(aDataSel, function(index, oData) {
oPushedObject = {};
aSelectedDataSet.push(fnCreateEnt(aProp, oData, oPushedObject));
});
This is aSelectedDataSet values
and this is the values of OData
What I need is that before I do the push is to fill the listTypeGroup & listTypeGroupDescription (with the red arrow ) with values that Are inside the oData -> ListTypeGroupAssigment -> result (listTypeGroup & listTypeGroupDescription) , The index is relevant since I want to add just the value of the index in each iteration (since this code is called inside outer loop and the index determine the current step of the loop) ,How it can be done nicely?
The result contain 100 entries (always) and the a selected data will have 100 entries at the end...
Update :)
Just to be clear In the pic I show the values which is hardcoded for this run but the values can be any values, we just need to find the match between the both objects values...
I mean to find a match between to_ListTypeGroupAssigment in both object (which in this case exist ) and if in oData there is result bigger then one entry start with the matching ...
UPDATE2 - when I try Dave code the following happen for each entry,
This happen in the Jquery.extend line...any idea how to overcome this?
The following hard-coded of Dave:-) work perfect but I need generic code which doesnt refer to specific field name
jQuery.each(aDataSet, function(index, oData) {
oPushedObject = {};
fnCreatePushedEntry(aProperties, oData, oPushedObject);
var result = oData.to_ListTypeGroupAssignment.results[index];
oPushedObject.to_ListTypeGroupAssignment = {
ListTypeGroup: result.ListTypeGroup,
ListTypeGroupDescription: result.ListTypeGroupDescription
};
aSelectedDataSet.push(oPushedObject);
});
Im stuck :(any idea how to proceed here ?what can be wrong with the extend ?
should I use something else ? Im new to jQuery...:)
I think that this happen(in Dave answer) because the oData[key] is contain the results and not the specified key (the keyValue = to_ListTypeGroupAssignment ) which is correct but we need the value inside the object result per index...
var needValuesForMatch = {
ListTypeGroup: 'undefined',
ListTypeGroupDescription: 'undefined',
}
//Just to show that oPushedObject can contain additional values just for simulation
var temp = {
test: 1
};
//------------------This object to_ListTypeGroupAssigment should be filled (in generic way :) ------
var oPushedObject = {
temp: temp,
to_ListTypeGroupAssignment: needValuesForMatch
};
oPushedObject is one instance in aSelectedDataSet
and after the matching I need to do the follwing:
aSelectedDataSet.push(oPushedObject);
Is this what you're after:
OPTION ONE - DEEP CLONE FROM oData TO aSelectedDataSet
aSelectedDataSet.forEach(function(currentObject,index){
for (var childObject in currentObject) {
if (! currentObject.hasOwnProperty(childObject))
continue;
var objectToClone = oData[childObject]['results'][index];
if(objectToClone)
$.extend(true,currentObject[childObject],objectToClone);
}
});
Here is your data in a fiddle with the function applied: https://jsfiddle.net/hyz0s5fe/
OPTION TWO - DEEP CLONE FROM oData ONLY WHERE PROPERTY EXISTS IN aSelectedDataSet
aSelectedDataSet.forEach(function(currentObject,index){
for (var childObject in currentObject) {
if (! currentObject.hasOwnProperty(childObject))
continue;
if(typeof currentObject[childObject] !== 'object')
continue;
for(var grandChildObject in currentObject[childObject]) {
var objectToClone = oData[childObject]['results'][index][grandChildObject];
if(typeof objectToClone === 'object') {
$.extend(true,currentObject[childObject][grandChildObject],objectToClone);
} else {
currentObject[childObject][grandChildObject] = objectToClone;
}
}
}
Fiddle for option 2: https://jsfiddle.net/4rh6tt25/
If I am understanding you correctly this should just be a small change:
jQuery.each(aDataSel, function(index, oData) {
oPushedObject = {};
fnCreateEnt(aProp, oData, oPushObj);
//get all the properties of oData and clone into matching properties of oPushObj
Object.getOwnPropertyNames(oData).forEach(function(key) {
if (oPushObj.hasOwnProperty(key)) {
//oPushObj has a matching property, start creating destination object
oPushObj[key] = {};
var source = oData[key];
var destination = oPushObj[key];
//can safely assume we are copying an object. iterate through source properties
Object.getOwnPropertyNames(source).forEach(function(sourceKey) {
var sourceItem = source[sourceKey];
//handle property differently for arrays
if (Array.isArray(sourceItem)) {
//just copy the array item from the appropriate index
destination[sourceKey] = sourceItem.slice(index, index + 1);
} else {
//use jQuery to make a full clone of sourceItem
destination[sourceKey] = $.extend(true, {}, sourceItem);
}
});
}
});
aSelectedDataSet.push(oPushedObject);
});
It is unclear what exactly your fnCreateEnt() function returns though. I am assuming it is the populated oPushObj but it's not entirely clear from your question.
I am using the SharePoint JavaScript Object Model within an Angular controller to retrieve data from the Taxonomy (term store). By using $scope.apply, I am able to bind the array to scope and use the values in a dropdown since SharePoint's JavaScript Object Model is not a normal Angular function understood by scope. This works as intended.
Now I need to set the value of the field to the current value stored in the database. This works with the following for dropdown/choice based fields where I retrieve the index of the item via a search of the array. Example:
var currentCategoryIndex = $scope.categoryValues.map(function (e) { return e.value; }).indexOf(currentCategoryValue);
$scope.vm.selectedCategory = $scope.categoryValues[currentCategoryIndex];
However, I can't access my array within the controller to check for the index (see code below). It does, however, bind the $scope for use in the dropdown via the $scope.$apply.
Something else really odd is if I add an alert, it will start working, like it somehow forces scope back. But using an alert on page load every time just to get the array working is not realistic.
I need to access the array so I can compare against it and get the index so I can set the field value to the correct item currently stored in the database.
Here is the function in my controller. Note that I need to run a sub function to get all the values. This works to create the $scope.termsArray binding that I use in my dropdown, it is the setting of $scope.vm.selectedCategory where the issue is occurring:
var termsArray = [];
// Query Term Store and get terms for use in Managed Metadata picker stored in an array named "termsArray".
function execOperation() {
// Current Context
var context = SP.ClientContext.get_current();
// Current Taxonomy Session
var taxSession = SP.Taxonomy.TaxonomySession.getTaxonomySession(context);
// Term Stores
var termStores = taxSession.get_termStores();
// Name of the Term Store from which to get the Terms. Note, that if you receive the following error "Specified argument was out of the range of valid values. Parameter name: index", you may need to check the term store name under Term Store Management to ensure it was not changed by Microsoft
var termStore = termStores.getByName("Taxonomy1234");
// GUID of Term Set from which to get the Terms
var termSet = termStore.getTermSet("1234");
var terms = termSet.getAllTerms();
context.load(terms);
context.executeQueryAsync(function () {
var termEnumerator = terms.getEnumerator();
while (termEnumerator.moveNext()) {
var currentTerm = termEnumerator.get_current();
var guid = currentTerm.get_id();
var guidString = guid.toString();
var termLabel = currentTerm.get_name();
// Get labels (synonyms) for each term and push values to array
getLabels(guid, guidString, termLabel);
}
// Set $scope to terms array
$scope.$apply(function () {
$scope.termsArray = termsArray;
console.log($scope.termsArray); // DOES NOT LOG ARRAY
});
var currentFacilityIndex = termsArray.map(function (e) { return e.termGUID; }).indexOf(currentFacilityGUID);
console.log(currentFacilityIndex);
$scope.term.selected = termsArray[currentFacilityIndex];
}, function (sender, args) {
console.log(args.get_message());
});
// Get labels (synonyms) for each term and push values to array
function getLabels(termguid, guidString, termLabel) {
var clientContext = SP.ClientContext.get_current();
var taxSession = SP.Taxonomy.TaxonomySession.getTaxonomySession(clientContext);
var termStores = taxSession.get_termStores();
// The name of the term store. Note, that if you receive the following error "Specified argument was out of the range of valid values. Parameter name: index", you may need to check the term store name under Term Store Management to ensure it was not changed by Microsoft
var termStore = termStores.getByName("Taxonomy1234");
// GUID of Term Set from which to get the Terms
var termSet = termStore.getTermSet("1234");
var term = termSet.getTerm(termguid);
var labelColl = term.getAllLabels(1033);
clientContext.load(labelColl);
clientContext.executeQueryAsync(function () {
var labelEnumerator = labelColl.getEnumerator();
var synonyms = "";
while (labelEnumerator.moveNext()) {
var label = labelEnumerator.get_current();
var value = label.get_value();
synonyms += value + " | ";
}
termsArray.push({
termName: termLabel,
termGUID: guidString,
termSynonyms: synonyms
});
}, function (sender, args) {
console.log(args.get_message());
});
}
};
// Execute function
execOperation();
UPDATE: I tried setting the $scope.termsArray = []; per the suggestion below, but it didn't work. What is really odd is that if I have an alert as follows, it somehow forces the console to log/grants me access to the array in the controller.
$scope.$apply(function () {
$scope.termsArray = termsArray;
alert("hey");
console.log($scope.termsArray);
});
I found a bit hard to follow your code.
My first guess would be to instantiate the array with empty value before anything else.
$scope.termsArray = [];
This trick tells Angular that this property exists and will exist at later stage.
In my Notes Database, I perform an audit when the document is saved. Pretty easy in LotusScript. I grab the original document (oDoc) from the server, then in the document I modified (mDoc), I do a Forall loop that gets the names of each item; forall item in mDoc.items. Grab the same item from oDoc, execute a function with the new item as an argument that will run down a case statement that will see if its a field we care about. if so, I update a set of list values in the document with "When", "Who", "What field", and the "New Value".
I'm doing this in a server side script. In trying this, I discovered a couple of interesting things;
currentDocument is the NotesXSPDocument that contains everything that was just changed.
currentDocument.getDocument() contains the pre-change values. It also returns a NotesDocument which has the "items" field that I can run through.
Thing is, I need something similar in the NotesXSPDocument. Is there a way in an iterative loop to grab the names and values of all items from there?
Here's the broken code. (Currently it's walking through the NotesDocument items, but those are the old values. I'd rather walk down the XSP document items)
function FInvoice_beginAudit() {
var original_doc:NotesDocument = currentDocument.getDocument();
var oItem:NotesItem;
var oItems:java.util.Vector = original_doc.getItems();
var iterator = oItems.iterator();
while (iterator.hasNext()) {
var oItem:NotesItem = iterator.next();
item = currentDocument.getItemValue(oItem.getName());
if (oItem == undefined) {
var MasterItem = ScreenAudit(doc,item,True)
if (MasterItem) { return true }
} else {
if (item.getValueString() != oItem.getValueString()) {
var MasterItem = ScreenAudit(doc,Item,True);
if (MasterItem) { return true }
}
}
}
}
You can get both versions of a document after submit - the original and the one with changed/new values:
original: var original_doc:NotesDocument = currentDocument.getDocument();
changed: var changed_doc:NotesDocument = currentDocument.getDocument(true);
This way you can compare the items for changes.
But, there is a pitfall: after assigning "changed_doc" to currentDocument.getDocument(true) the "original_doc" has the changed values too because both variables point to the same document. That's why we have to copy all items from currentDocument.getDocument() to a new temporary document first and only after get the changed values with currentDocument.getDocument(true). As an alternative you could read the original document from server like you do in LotusScript.
This is a code for detecting changed items as a starting point:
var original_doc:NotesDocument = database.createDocument();
currentDocument.getDocument().copyAllItems(original_doc, true);
var changed_doc:NotesDocument = currentDocument.getDocument(true);
var oItems:java.util.Vector = original_doc.getItems();
var iterator = oItems.iterator();
while (iterator.hasNext()) {
var oItem:NotesItem = iterator.next();
var itemName = oItem.getName();
var cItem:NotesItem = changed_doc.getFirstItem(itemName);
if (cItem.getText() !== oItem.getText()) {
print("changed: " + itemName);
}
oItem.recycle();
cItem.recycle();
}
original_doc.remove(true);
original_doc.recycle();
I've been trying to work with Trello and the Google Apps Script this week. I am trying to create an array of hashes that I can then use to load the spreadsheet. Google apps script doesn't like the typical javascript code of creating hashes. I've looked up the docs but they don't have anything like hashes...they say to:
var object = [];
var object1 = {};
object.push(object1);
This wont work because I'm essentially trying to do something like:
var hash={name: , label: };
var n= someNumber;
var l= someLabel
var hash.push(name: n, label: l);
Essentially that is the code I have right now. But here is my entire function:
function getData(){
var list={};
//get the list of delivered cards from Trello
var listRequest = authorizeToTrello(); // get authorization
var result = UrlFetchApp.fetch("https://trello.com/1/lists/4fea3a2c3a7038911ebff2d8/cards",
listRequest);//fetch list
var listOfCards = Utilities.jsonParse(result.getContentText());//Google app utility format json
//outer loop to iterate through list of Cards
for(var i=0; i < listOfCards.length; i++){
var cardId = listOfCards[i].id; //get the id of a single card
var l = listOfCards[i]["label"]; //get the label for the our structure
//get a json object for a single card within the list of cards iteration
var cardRequest = authorizeToTrello();
var getCard = UrlFetchApp.fetch("https://trello.com/1/cards/" + cardId + "/actions", cardRequest);
var singleCard = Utilities.jsonParse(getCard.getContentText());
//inner loop to iterate the single cards JSON objects
for(var j=0; j < singleCard.length; j++) {
if(singleCard[j].data != undefined && singleCard[j].data.listAfter != undefined)
{
var str = singleCard[j]["data"]["listAfter"]['name'];
if(str === "Delivered Q3 2012"){
var n = singleCard[j]['memberCreator']['fullName'];
}
}
}
//push the data to list
list.push(n,l);
}
return name, label; //return list for output
}
Reading the question, I understood that the author needs to know how to create an associative array in a GAS. If it is correct then here is a couple of links (here and here) and a sample code is bellow.
function testMap() {
var map = {};
map["name1"] = "value1";
map["name2"] = "value2";
return map;
}
If the author needs really
an array of hashes
then there are a couple of ways depending on which hash algorithm is required.
to use the Utilities.computeDigest method to calculate a hash of a string using one of available algorithms.
if the required hash calculation algorithm is not supported by the Utilities.computeDigest, then is possible to write own implementation as it is done for the BLAKE function.
Here is a sample of how to create an array of hashes using the MD5 hash.
function testHash() {
var array = [];
array.push(Utilities.computeDigest(Utilities.DigestAlgorithm.MD5, "value1"));
array.push(Utilities.computeDigest(Utilities.DigestAlgorithm.MD5, "value2"));
return array;
}
P.S. The return line of the author code return name, label; //return list for output
is not correct - only the label variable value is returned. To return a couple of variables as an array is necessary to write return [name, label];. Or may be the author needs to return the list variable and not name and label.
I know this is an old post / question, but i would like to update my answer since the original anwer (1st answer) is misleading. I was myself looking for how to return associative arrays back to a cell in the spreadsheet, but alas.. "YOU CANNOT". Google spreadsheet MUST want an numerically indexed array or an object. Otherwise it returns "#ERROR".
Here are the steps to replicate the issue.
function testMap() {
var map = {};
map["name1"] = "value1";
map["name2"] = "value2";
return map
Formula in your cell: =testMap()
Value in your cell: Thinking... #ERROR
Solution (rather a workaround)
1: Transfer your objects from your associative array into a numerically indexed array using for-each type loop.
var temp = new Array();
for (var i in map) {
temp.push([i,map[i]])
// optionally use activeSheet.getRange(X:X).setValue([i,map[i]])) function here.
// set values will not work in cell functions. To use it via cell functions, rerun / trigger the functions using an on_edit event.
}
If you used a temp like numerically indexed array, you can return "temp" back to the calling cell.
Summary: For onEdit() purposes, use Cache Service to define associative array data.
Here's a shared Gsheet demonstrating this curious behavior. I tried the following solution in programmatically defining an associative array based on data in a Google sheet.
var assocArr = {
labels: {},
init: function () {
var sheet = SpreadsheetApp.getActiveSpreadsheet().getSheetByName('sheetName');
var values = sheet.getDataRange().getValues();
for(var row in values) {
assocArr.labels[values[row][0]] = values[row][1];
};
for(var key in assocArr.labels) {
Logger.log("key: %s, value: %s",key, assocArr.labels[key]);
};
return(void(0));
},
};
To execute this, you run the init() method in the onOpen() event handler.
function onOpen() {
assocArr.init();
var key = 'test';
SpreadsheetApp.getUi().alert( assocArr.labels[key] );
Logger.log("onOpen: key: %s, value: %s",key, assocArr.labels[key]);
};
The logger message confirms that init() loads the data from the worksheet.
Now if I try to reference this assocArr object in onEdit() it returns undefined for all key values.
function onEdit(event) {
var key = 'test';
SpreadsheetApp.getUi().alert( assocArr.labels[key] );
Logger.log("onEdit: key: %s, value: %s",key, assocArr.labels[key]);
};
I infer that for security reasons, Google limited the simple-trigger onEdit() to not have global variable scope, same as they voided the utility of the event.user property.
Now instead if I simply put the key-value pair in the cache, it works! Here is the complete code that works using the Cache Service.
var cache = CacheService.getPrivateCache();
var assocArr = {
init: function () {
var sheet = SpreadsheetApp.getActiveSpreadsheet().getSheetByName('Account Labels');
var values = sheet.getDataRange().getValues();
for(var row in values) {
cache.put(values[row][0], values[row][1], 3600);
};
return(void(0));
},
};
function onOpen() {
assocArr.init();
var key = 'test';
SpreadsheetApp.getUi().alert( cache.get(key) );
Logger.log("onOpen: key: %s, value: %s",key, cache.get(key));
};
function onEdit(event) {
var key = 'test';
SpreadsheetApp.getUi().alert( cache.get(key) );
Logger.log("onEdit: key: %s, value: %s",key, cache.get(key));
};
Curiously, the onEdit() has the cache variable in its scope.
Here again is the shared Gsheet demonstrating this curious behavior.
I found this really quick way that is not listed
Create a json object (array style)
var myArray = {
1:{"id": "inprogress","title" : "in Progress"},
2:{"id": "notstarted","title" : "Not Started"},
3:{"id": "completed" ,"title" : "Completed"}
};
read the json
// get the lenght of the json object
var jsonSize = Object.keys(myArray).length;
// use this in a loop
for (var i = 1; i < Object.keys(jsonSize).length; i++) {
var title = myArray[i].title;
}
Works like a charm for me