In CouchDB, I am writing to an array and keep getting the message "[Circular]". I am using Node.js to create the data to be written like this.
Say I have an two email objects in the same document in CouchDB:
unverifiedEmail = [{"address":"john#example.com","dateAdded":"1389215329484"}]
verifiedEmail = []
Now in Node.js I do this before writing.
var oldData = readFromCouchDb();
var newData = oldData;
newData.verifiedEmail.unshift(newData.unverifiedEmail[0]);
writeToCouchDb(newData);
Then when I view the document in Futon I see this:
unverifiedEmail = [{"address":"john#example.com","dateAdded":"1389215329484"}]
verifiedEmail = "[Circular]"
What's going on here?
I found out the issue has to do with the depth of the way to set Javascript objects equal to each other.
To solve this, I used the following code in place of the unshift above:
newData.verifiedEmail.unshift(JSON.parse(JSON.stringify(newData.unverifiedEmail[0])));
Related
How I could append an element to an array like that ?.
Adding an item to an array structure like that, requires three steps:
Read the existing data.
Determine the key of the new item.
Write the new item.
In code that'd be something like:
const ref = admin.database().ref("javascript");
ref.once("value").then((snapshot) => {
let numChildren = parseInt(snapshot.numChildren());
ref.child(""+(numChildren+1)).set(4);
});
Note that this type of data structure is fairly non-idiomatic when it comes to Firebase, and I recommend reading:
Best Practices: Arrays in Firebase.
I'm trying to add new names to the address book programmatically but I'm getting the following error:
[TypeError] Exception occurred calling method NotesDocument.replaceItemValue(string, Array)
Unknown or unsupported object type in Vector
Code snippet below:
var addressBook = session.getDatabase("","names.nsf");
var gView:NotesView = addressBook.getView("($VIMGroups)");
var gDoc:NotesDocument = gView.getDocumentByKey("groupName", true);
var newg:java.util.Vector = [];
var mems:java.util.Vector = new Array(gDoc.getItemValue('Members'));
newg.push(mems);
var newNames:java.util.Vector = new Array(getComponent("NewMems").getValue());
newg.push(newNames);
gDoc.replaceItemValue("Members", newg);
gDoc.save();
Adding a single user works fine, but then it does not save users in the required canonical format below:
CN=John Doe/O=Org
Instead it is saved in the original format below:
John Doe/Org
I look forward to your suggestions. Thanks.
You can't store an Array in a field. Make newg a java.util.Vector instead and integrate with that.
For OpenNTF Domino API the team wrote a lot of code to auto-convert to Vectors, which may cover Arrays.
Don't use an Array (which is a JS thing). Initialize it as a Vector.
var newg:java.util.Vector = new java.util.Vectory();
Then look up the Vector methods to see how to add to that vector. Not sure if you will have to convert the names using the Name method but I would store them as "CN=Joe Smith/O=Test Org" to be sure you got the right format.
I was able to solve the issue using a forloop to loop through the list and push it into a newly created array. Using the forloop seems to make the difference.
var newg = [];
var group = new Array(getComponent("NewMems").getValue()), lenGA = group.length;
for(i = 0; i < lenGA; i++){
newg.push(group[i]);
}
gDoc.replaceItemValue("Members", newg);
gDoc.save();
An explanation about this behaviour will be appreciated.
I have a coucdb database which contains about 200000 tweets, keys are tweet ID. I have a query which needs to retrieve all documents to look for some information. I'm using lightcouch to work with couchdb in a java web app. If I create a dbClient like this:
List<JsonObject>tweets = dbClient.view("_all_docs").query(JsonObject.class);
and then loop through tweets, for each JsonObject in tweets, use
JsonObject tweetJson = dbClient.find(JsonObject.class, tweet.get("id").toString().replaceAll("\"", ""));
to retrieve each tweet one by one it took extremely long time for 200000 documents. If I load all documents in one single query using includeDocs(true)
List<JsonObject>allTweets = dbClient.view("_all_docs").includeDocs(true).query(JsonObject.class);
it caused outofmemory exception since the number of documents are too large. So how can i deal with this problem? I'm thinking about using limit(5000) to retrieve 5000 documents for each time and loop through whole database, but I don't know how to write the loop to continue to retrieve the next 5000 after the first 5000 docs. One possible solution is using startKey and endKey but I'm confused how to use them when the key is tweet ID.
Use queryPage but make sure to use a String as the Key
See: https://github.com/lightcouch/LightCouch/issues/26#event-122327174
0.1.6 still seems to show this behaviour.
A workaround that I found for this goes something like this:
changes = DbClient.changes()
.since(null) // or... since(since) if you want an offset
.includeDocs(true);
int size = 1;
getCursor("0");
while (size > 0 ) {
ChangesResult resultSet = changes.limit(40000).getChanges();
List<ChangesResult.Row> rowList = resultSet.getResults();
for (ChangesResult.Row feed: rowList) {
<instantiate your object via gson>
.
.
.
}
getCursor(resultSet.getLastSeq());
size = rowList.size();
}
So I am trying to use a list of input strings to isolate them in a view using Revit API. I got this far, but I am getting stuck where I am trying to create a set that takes all elements in a view and removes ones that are created from input IDs. I am doing this to end up with a set of all elements except ones that i want to isolate.
dataEnteringNode = IN0
view = IN0
str_ids = IN1
doc = __doc__
collector = FilteredElementCollector(doc, view.Id)
for i in str_ids:
int_id = int(i)
id = ElementId(int_id)
element = doc.GetElement(id)
element_set = ElementSet()
element_set.Insert(element)
elements_to_hide = collector.WhereElementIsNotElementType().Excluding(element_set).ToElements()
#Assign your output to the OUT variable
OUT = elements_to_hide
I would greatly appreciate a help in solving this error. I am getting that "expected ICollection[ElementId], got set". I am guessing the problem lies in a Excluding filter where i need to create a collection of Ids to exclude but I dont know how. Thank you in advance. Thank you for help in advance!
The reason your code doesn't work is that ElementSet in the Revit API does not implement the ICollection<T> interface - just the IEnumerable<T>. So, to get your code working, you will need to create an ICollection<T> object from your set.
Try something like this:
# ...
from System.Collections.Generic import List
element_collection = List[ElementId](element_set)
elements_to_hide = collector.WhereElementIsNotElementType().Excluding(element_collection).ToElements()
I have a custom view that I set up in drupal. What I would like to do is make a function call of some kind, and then assign the results to a php variable. I would like the contents of the view (as opposed to the results of a view export) in this new variable. Is this feasible? If it is a function call, I would appreciate a small example too. Thanks!
I haven't done too much hacking around in views, but it looks like maybe views_embed_view() might be what you are looking for. I found a good overview of the views API here: http://www.trellon.com/content/blog/view-views-api
You can get the view object with function views_get_view($view_name).
If what you mean by contents of the view is the view object itself you'll need simply:
$view = views_get_view('name_of_the_view');
However, if you mean the data returned by your view you'll need a little bit more.
$results = views_get_view_result('name_of_the_view', 'display_id');
At last, if you wish to have more control you can try another approach, creating the view object and working on it afterwards.
//variables for your view, display and resulting array
$my_view_name = 'yourview';
$my_display_name = 'yourdisplay';
$my_arguments = array();
//Creating the view object and configuring it
$view = views_get_view($my_view_name);
if ($my_arguments){
$view->set_arguments($my_arguments);
}
$view->get_total_rows = True;
$view->set_items_per_page(0);
$view->build($my_display_name);
$view->execute($my_display_name);
//now you have your data array
$view_results_array = $view->result;