Solr: calculate age in number of years from DOB - solr

I am storing DOB in MySQL DB and while indexing data in SOLR I want to calculate age in years and store it another field
Is there a way to do this.
I can calculate the age when the user first registers and enters the DOB but then there is no way for me to know to update the age of a user every year.
Can you suggest me ways to do this if the doing it while indexing is not the right approach
Thanks

Don't think you can get the calculated field returned with the response.
The calculation can be easily done on the client side, consuming the Solr response.
Function queries allow you to use the field values with a lot of operations on it.
e.g. milli second between the current date and dob
ms(NOW,dob)
But they are we used just in queries and not be effect the response.

As mentioned previously you can use function queries to calculate the age. You can also use a field name alias to return a new field in the Solr response, for example:
&fl=age:div(ms(NOW,dob_dt),86400000)
would return a new field called age with the difference between the dob_dt field and the current date. The function query ms(NOW,dob_dt) will return the milliseconds from dob_dt until the current date. The div() function converts this value to days (i.e, 1000606024). Extending this to convert to years (1000606024*365):
&fl=age:div(ms(NOW,dob_dt),31536000000)

Related

ValueFilter for DateTime Attributes

I'm working with the Blog app and I see how to filter the Blog posts by year using the Visual Query Designer. I use the querystring value that has the year and in the ValueFilter and my properties are as follows:
Attribute: PublicationMoment
Value: [QueryString:year]-01-01 and [QueryString:year]-12-31
Operation: between
How would I get the posts from a specific month and year, if those values are passed via query string parameters. Because the months of the year have a varying number of days, I'm not sure how you would accomplish this in the Value field of the ValueFilter. Currently I'm passing the 2 digit month as the parameter.
I tried something like: [QueryString:year]-[Querystring:month]
Operation: contains
but the above operation doesn't really work because the datatype is a DateTime object.
I could do it in the razor view but I'm afraid that the paging datasource would have too many pages in it since it would be based on the larger subset of posts for the given year that was passed in the querystring parameter.
Is there any way to do this with the filter?
Basically dates are not perfectly handled yet, but there are a few ways to do it using the visual query:
Use the correct date in the query like between [QueryString:Start] and [QueryString:End] and calculate the correct dates there where you generate the links
Since your main problem with the "between" filter is actually that it would include the last day too, you could also use a two filters a >= first date and another < second date, so the first-date would be the year/month and day 1; the second one is year-month and day 1 as well
Last but not least: if you do it with razor and LINQ you shouldn't run into any performance issues - it's technically the same thing the pipeline does and it's been tested to perform well with tens of thousands of records.

Modify Time Utility Component in WebRatio

I am new to using WebRatio and IFML. I need to build a small web application where at a certain point it is necessary to do some validation based on the timestamp a user provides. This timestamp should be between the range of minimum 24hours from now and maximum 14 days.
I hoped to find a way to adapt the values passed from a Time Utility component, add 24 hours or 14 days to it and then use a Compare Validation Rule to validate what the user has entered.
Can someone please explain how I can accomplish my goal here?
the best way to make this validation is to model in the form two hidden fields containing the minimum and maximum value allowed for the timestamp. In this way you can model on the timestamp field two Compare Validation Rules. Each Compare Validation Rule uses the Value Field property filled in with one of the hidden field. So, at the end, the validations on the field express these conditions
timestamp field greater than minimum timestamp
timestamp field lower than maximum timestamp
To fill the hidden fields with the correct value, given the current timestamp, you can use the Dates Function component. You can download it from the WebRatio Addons

Criteria to get last not null record present

I have a daily record table where records are stored date wise. I am using hibernate criteria to access data. How do i get the last date till which records are present continuously (date wise continuity) by providing a date range. For example, say records are there from 21-09-2012 to 25-09-2012 , again from 27-09-2012 to 31-09-2012. I want to form a query using criteria to get record of date 25-09-2012 because for 26-09-2012 there are no records (by passing date ge 21-09-2012 and date le 31-09-2012) . I want to know the last date till which records are present continuously. Say the table has three fields - 1.recordId (AI) 2.date 3.Integer record.
Its not a proper solution to your question. But it may be scenario specific.
How about getting the data for a date range and show then on a calender. Change the color of date if the corresponding value is null.
I think HQL will be better way to this in Hibernate:
http://docs.jboss.org/hibernate/orm/3.3/reference/en/html/queryhql.html

strange appengine query result

What am I doing wrong in this query?
SELECT * FROM TreatmentPlanDetails
WHERE
accountId = 'ag5zfmRvbW9kZW50d2ViMnIRCxIIQWNjb3VudHMYtcjdAQw' AND
status = 'done' AND
category = 'chirurgia orale' AND
setDoneCalendarEventStartTimestamp >= [timestamp for 6 june 2012] AND
setDoneCalendarEventStartTimestamp <= [timestamp for 11 june 2012] AND
deleteStatus = 'notDeleted'
ORDER BY setDoneCalendarEventStartTimestamp ASC
I am not getting any record and I am sure there are records meeting the where clause conditions. To get the correct records I have to widen the timestamp interval by 1 millisecond. Is it normal? Furthermore, if I modify this query by removing the category filter, I am getting the correct results. This is definitely weird.
I also asked on google groups, but I got no answer. Anyway, for details:
https://groups.google.com/forum/?fromgroups#!searchin/google-appengine/query/google-appengine/ixPIvmhCS3g/d4OP91yTkrEJ
Let's talk specifically about creating timestamps to go into the query. What code are you using to create the timestamp record? Apparently that's important, because fuzzing with it a little bit affects the query. It may be relevant that in the datastore, timestamps are recorded as integers representing posix timestamps with microseconds, i.e. the number of microseconds since 1/1/1970 UTC (not counting leap seconds). It's also relevant that dates (i.e. without a time) are represented as midnight, i.e. the earliest time on that day. But please show us the exact code. (It may also be important to show the actual content of the record that you're attempting to retrieve.)
An aside that is not specific to your question: Entity property names count as part of your storage quota. If this is going to be a huge dataset, you might pay more $$ than you'd like for property names like setDoneCalendarEventStartTimestamp.
Because you write :
if I modify this query by removing the category filter, I am getting
the correct results
this probably means that the category was not indexed at the time you write the matching records to the data store. You have to re-write your records to the data store if you want them added to the newly created index.

Sum field by date range

I'm using solr 3.6 and I'm kinda stuck trying to perform a special query.
I'm actually using facets by date range, the face.date.gap is set to +1DAY. Of course, the facet is supposed to return the count of docs at a date range but I also need to get the sum of a special field at the same ranges used in facet. It's like I need to count how many votes I have daily monthly, weekly, whatever... it depends on the gap params.
Any ideas? Should I use the group.query or facet.query?
One suggestion I have is to treat the weeks, days separately, and index them. For ex. Today is part of 24th week. Another suggestion is not to rule out multiple searches to service one request. One to calculate all oth facets and one to return counts for given date range (based on search results from first query).

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