I am working on a CLI app based on ActiveRecord migration, and I am trying to set one of the table columns to have a t.date property so that the users can check open availability during certain dates. The trouble I am having is how to format my date when I create a new instance of my class. Created instance
As of now, I just have 2020 integer in there so I can test out my other methods but I will need to get this situated before I move on to the more advanced methods. I have tried to use mm/dd/yyyy format in "" and without, as well as mm-dd-yyyy and some other fomrats. Not sure it should be a string, or just integer values.
I hope I am asking my question correctly.
I'd suggest that you would be able to create the date in a variety of different ways before passing it to your function.
Please see the below image for some examples of ways you could create a date object.
Ruby date and datetime class - Tadayoshi Funaba 1998-2011
Related
TLDR; is there a way to understand at runtime which format is ADF using for dates behind the scenes? In particular the format used to render dates in dynamically generated sql code?
In the Oracle ADF Application I'm working on there are several table filters (by that I mean the field over the column in which I can write text/number/dates to query the table).
Filtering this way, the framework modifies the query of the View Object, adding the appropriate where clause. On the page there's also a button "Select all" that allows me to select all the data that's rendered in the table (there is a selection checkbox).
In the specific case, the query from the VO is used to aim two different goals:
update the rendered data in the table
if I press the "select all" button a function in the backend database is called (callable statement calling the function), passing as a parameter the query.
The first task is successfully reached (as the table is visually updated), but we had an issue with the second one.
The backend function uses the query to select all the extracted data (as iterating in ADF with java would be too slow).
The problem is that the where clause isn't correctly generated for the backend database (which is also oracle).
Basically the generated WHERE clause (which was added to VO's query automatically by the framework) was
WHERE record_date = '2020-10-12'
which I had to change to
WHERE record_date = to_date('2020-10-12', 'YYYY-MM-DD')
in order to have it correctly executed by the Oracle Db.
So now it's working (yay), but my concern is: isn't it dangerous to assume the date format will be 'YYYY-MM-DD' on every application's instance?
I think this 'YYYY-MM-DD' is the format in which ADF is managing dates (as the value is written as '2020-10-12' in the query).
But is there a way to understand at runtime which format is ADF using for dates behind the scenes? Or does it always use 'YYYY-MM-DD', or am I completely off-road and the storage format is another and I should ask which format does it use to render dates? But dates on page are visually rendered in another way :/
Sorry for my lack of expertise and have a nice day!
Update
The value of the query field, which I'm getting by calling
this.getNamedWhereClauseParams().getAttribute('vc_temp_1');
is of class
oracle.jbo.domain.Date
and by printing it I obtain the date in format YYYY-MM-DD.
Would it be possible that the framework was simply using Date.toString?
This would raise another question: how can I be sure of the pattern used by Date.toString? The documentation isn't clear about it (and it says that it should be used only in development, so this is quite a remote scenario).
What you named 'Filter' is called 'Query by Example' or QBE in short. See the doc for more info.
You can change the query passed to the server using a bean method. Look at e.g. JDev 12.2.1.3: Multi select component table filter for a sample.
Using dates in ADF is always dependent on the current user's settings. If the user don'T use a specific locale the default is 'yyyy-mm-dd'. This can be changed at different points, starting by the entity objects, view objects a,d finally in the UI by using converters.
The best way to use dates depends on the use case.
I am working on an entity view that displays billing records with associated date. This date field needs to be displayed as "Month - Year". Unfortunately, I am not able to find a way to format this date field outside of modifying the entity and even then, I only have the option for date only or date and time.
I have noticed that I can select the field and click on Change Properties. There I have "Web Resource" and Function Name. I have tried creating a web resource with a function that returns some data. Set everything up, saved and published. This function is not even found in dev tools. Only examples that I have for it are dealing with using this method for icons:https://www.c-sharpcorner.com/article/view-customization-with-javascript-in-dynamics-365/
In another example the suggestion is to use calculated fields, but this would cause me to lose date sorting and filtering on the form.
That view-based JavaScript seems to be to choose an icon. I'm not sure it would allow you to reformat actual data in the view. And if you're looking for assistance with trying to do that, you'd probably get more help if you posted the code.
Besides the JavaScript approach, you might want to think about creating a separate text field to hold the "Month - Year" value. Then you could use a workflow, plugin, or JavaScript to populate it when the datetime field changes.
One of the free workflow tool packages (Jason Lattimer's, Aiden Kaskela's, or Andrew Butenko's) probably has the ability to parse the date so you can format the month and year, and store the string in the separate field. This would be a no-code option.
Alternatively, you could write a plugin to reformat the datetime values and register it on the RetrieveMultiple message of the entity.
I'd probably go with a separate field and an off-the-shelf workflow utility to populate it.
There are several ways:
1. Setting->Administration->System Setting->Format->Customize,
2. http://prntscr.com/ph42nc,
3. or use on load with js to change date format more on this subject here: How to change date format in JavaScript
I have sheet in Qlik Cloud, where I have dataset from whole month. I would like to filter this dataset by date or time - 1 day, 1 week, 12 hours... column with date/time in format yyyy/mm/dd hh:mm:ss is in dataset for each row. Is possible insert some calendar? Or have you any idea?
Thanks for your answers ;)
Provided that your data is loaded correctly, drag the field directly onto the sheet. This will create a look-up box that can be searched.
You can see if the field has been identified correctly as a date as it will appear like this on the field selector
Another Option
Create a filter box option and add your date field to it, the benefit of this is that you can have multiple filters in one place. Allowing users to pick the part of the date relevant to them. For example showing the year field, the month field and the date field in one
one more option
Using non-standard Qlik extensions you can achieve the functionality that you require. SenseDateRangePicker is an extension that provides extended date selection functionality.
I have a dilemma, we are a multi subsidiary company with subsidiaries in different countries/jurisdictions. All of which requires specific language and formatting for invoices/credit memos depending on the subsidiary. Currently our global date format is mm/dd/yyyy and it is flowing correctly to the template, we want to show the Transaction and Due (${record.trandate} +${record.duedate})in DD-Mon-YYYY (01-Jan-20015) without changing the global date preference. AS per NS support if we change the date preference globally it may effect our existing forms and scripts.
Is there any Free Marker syntax that can translate the date format for those to fields from mm/dd/yyyy to DD-Mon-YY, any help is appreciated.
Sam Azad
Also by adding <#setting date_format="dd-MMM-yyyy"/> in the head section also does the trick.
I'm storing a simple java.util.date in an Oracle XE database via hibernate.
When testing with JUnit if I can retrieve the correct value, I get an error like this:
junit.framework.AssertionFailedError:
expected:<Sun Dec 28 11:20:27 CET 2008>
but was:<2008-12-28 11:20:27.0>
The value is stored in an Oracle Date column (which should have a second-precision) which looks okay to me. Also, I'm surprised that 11:20:27 is not equal to 11:20:27.0. Or does this have to do with timezones?
Any help is welcome.
Thorsten
Okay, worked some more on it ...
Oracle Date columns only store values with an accuracy of a second.
Java Dates do contain milliseconds, but they are typically not printed. So
expected:
was actually created by a date like 11:20:27,345, which is of course not equal to 11:20:27.0
Solution:
either only use full second dates to store and retrieve
or
get hibernate to create the correct Oracle Datatype (TIMESTAMP) - this is very dependent on the dialect specified in the hibernate config (OracleDialect and Oracle10gDialect create different types).
If you compare a java.util.Date to a java.sql.Date that both represent the same instant in time, equals(Object) will return false (it considers two objects of different classes to never be equal).
Your tests need to account for that. The easiest way to do this is to convert the dates to UNIX time (e.g. java.util.Date.getTime()) and compare those values.