I hope you guys could help me come up with a new solution for a customer. The scope of the project detailed getting data from me. So I created a user interface where the user could select the data they wanted and I would create an xml file that automatically sent it to the user through email. I limited the user to only be able to select 5 items at a time so that the tool would not time out b/c there is a lot of data in the xml that needs to be generated based on the selection. Now the user is asking not to be limited to 5 and wants to be able to select how many he/she desires. My question is are there any other solutions to handle this problem.
one little hack to reuse your current solution would be to write a wrapper so as to accept any number of items as selection, then process them by chunks of 5 ( or whichever limit you choose)
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I'm currently working through my A Level computer science controlled assessment, and am making an application designed to help Scout Leaders manage their group. This is my first time working in Java, SQLite, Android Studio and XML so I've run into a few problems along the way. At this point in time, I'm in the process of creating a login system, part of which involves editing login details. I was wondering if there's a way of loading multiple values from one record into different EditTexts at once, so the user only needs to edit the already-existing username and password, rather than type it in again with a slight edit? Thanks in advance. I didn't think it necessary to include any code in this question, as I'm only looking for an example, however if it would help please don't hesitate to ask - I just couldn't find a guide on this anywhere else.
You retrieve the data into a Cursor via a query that selects the required columns.
You then move to the appropriate row (record) in the Cursor (probably the first and only row).
For each EditText you set the text, using the setText method with the data from the respective column using an appropriate get???? method passing the column offset to the method (e.g. your_cursor.getString(<the_column_offset>)).
Rather than calculating and hard coding an offset, it is more reliable and flexible to use the getColumnIndex(<the_column_name_as_string>) method.
After all have been set you then close the Cursor
Note and would be replaced with respective values specific to the App.
In a handful of circumstances, I'd like to allow the Current User to be able view a list of records filtered by Owners of each record that are Direct Reports that they manage or even by the Manager they report to via our global directory.
I'm comfortable making a new Datasource for CurrentUser in a Directory model. However, I'm tripping over myself trying to find the best way to match an Ownership (email) field from a record, with an array of the direct reports associated with the current user.
A specific example would be on the Travel Approval template. The table on the Dashboard page has a filter for "My Requests | All" and I'd love to add a third option for "Direct Report Requests".
My assumption is that I would adjust the onClick event to filter results accordingly:
widget.datasource.query.pageIndex = 1;
widget.datasource.query.filters.Owner._equals = app.user.email;
widget.datasource.query.filters.Owner._in = null;
widget.datasource.load();
updateUrlForDashboard();
That's one small example, but more importantly, I'd like to get a better understanding of how best to reference/store those additional relationships about the Current User.
Ideally, a current user is able to have greater ability to manage (approve/deny/comment on) resources tied to their Direct Reports and generate records that provide a similar level of control to the Users that Manage them.
I'm not sure if that's best handle by some use of Roles or another approach. Any advice on how best to plan out that kind of setup would be much appreciated.
funny thing ... I had the same question a couple of months ago. I think you will find Pavel's solution on this very interesting. You can find it here.
This is a typical situation for 1 to many relationships: a chat group iOS app, a group table to record all the group chat related information, like group id, create time, thread title, etc.
To record the participants, of course, I would assume there is another 1:m table. So I was rather surprised to see the app just added another column called "participants" to record it, with each participant is separated by a delimiter (':' to be exact). The problem with that is quite obvious, mixing application code with sql code, e.g. no way to see how many groups a specific user is in with sql code, violated 1NF/2NF, etc.
But they said we understood all your points. But
as this is a mobile app, you always need to use objective c code to access sqlite tables, you won't use sql codes alone. So not a "big deal" to mix them together.
participants don't change often and normally are set when a group is created. If we have 100 participants we would rather just insert 1 record to group table instead of insert 100 records into another group-participants table.
The participant data will be used when someone wants to see who are in this chat group (by several taps on the menu) and when someone joins or leaves the chat group, assume it won't happen often.
So my question is in this particular situation what is the advantage I will gain if I use another 1:m table?
----- update -----
Except for the answer I got, Renzo kindly pointed this discussion to me, which is also very helpful!
It's hard to respond to "is this design better/worse" style questions without understanding the full context. I'm going to make some assumptions based on your question.
You appear to be building a mobile application, supporting "many to many" user chat. I'm picturing something like Slack.
Your application design is using the SQLite database for local storage.
Your local sqlite database on the phone is some kind of subset of the overall application data - like a cache, only showing the data for the current user.
If all that is true, the question really is down to style/maintainability on the one hand, and performance and scalability on the other.
From a "style" point of view, storing the data in a comma-separated value in a column is ugly. A new developer who joins the project, with a background in "regular" database design will consider it at best a hack. On the other hand, iOS developers may consider it perfectly normal.
From a performance point of view, it's probably not worth arguing about - parsing the CSV is probably just as slow as reading/writing from the database.
From a scalability point of view, you may have a problem. If the application design needs to capture in which order users joined the chat, or capture some kind of status (active/asleep, for instance), or provide a bit of history (user x exited at 21:20), you almost certainly end up re-designing the database.
In my multi-user meteor application design I want to enable users to be able to create and store their own reactive dashboards to visualize data that they own within the applications database. For example, a user may have an object in the database representing the real-time disk usage of a processor. I want them to be able to submit/store html say to represent a dynamic dial as their dashboard. Another user may have their own weather station and want a dashboard with a last 24 hours thermometer and pressure trend. When they call up one of their stored dashboards it is rendered and would update as their data changes.
Can anyone point to example code or explain how to accomplish this? Or, authoritatively explain why it cannot be done in the framework. I have come across various dynamic API's but nothing that fits the bill. I.e. UI.renderWithData and Meteor._def_template.
The following topic was very similar to my questions and it got me a good start and I figured it out and posted and answer there.
How to make meteor evaluate user defined template text
Can anyone help or provide me with some suggestions for the below query.
I have a web form (Minutes of Meeting) and 8 users that need to access this web page and update their area. A user may have more than one area to update and essentially i would like to some how lock down the web page if possible when a user is using it so that no other user can update this web page till joe bloggs has finished with it.
I have a Active Directory security group set up to restrict the site to that group of users only, but i need to think of a solution to the above?
Is there a way i can do this via a web control or via SQL?
There must be better ways to do it. However, Is it possible for you to introduce a sql table column similar to "UpdateInProgress" (bit). Any update process sees that column, If 0 then It updates to 1 and after It saves the changes and updates back to 0 so that the form is available for other to update. If update process sees 1, It can't update the web form because update is in progress.
I also suggest to introduce another column named "UpdateInProgressBy" to check who has opened it for editing.
First of all we must note that there is a big time from the moment the user reads the data, get it in a page, change them and then try to write them back. So we are not talking for the lock command on SQL, nether any other lock that happens in milliseconds and help to synchronize threads, but here we must synchronize people and what they write.
There is also a problem if the user leave the page for any reason and this can make the data lock for ever.
This problem can solve with two approaches.
the easy one, when a user try to save data you must check if the same data have been change in the middle, and warn him, or show a merge dialog, or merge programmaticall, or something similar - I do not know what you won.
the difficult way is to constantly monitor the page that read and change the data, and keep this monitor results on a common table in the data base, and there if a user have been and stay on page, the rest users get a warning and read only data, until the user go.
This monitor must be made with javasript and must know even if a user abandon the page.
SET TRANSACTION ISOLATION LEVEL as SERIALIZABLE
for more information check this link:
http://msdn.microsoft.com/en-us/library/ms173763.aspx