I have two fields on my web page ie: BookAuthor and BookDescription.On submit,the page searches against lucene index using the given search criteria.
If the user does not type in anything in the two fields and submits the page, how do make Lucene.Net return all the books from my index irrespective of BookAuthor and BookDescription field values?
Thanks!
the correct way to do this is to use a MatchAllDocsQuery:
http://lucene.apache.org/java/2_9_4/api/core/org/apache/lucene/search/MatchAllDocsQuery.html
I'm not sure if this is the correct way but you could add another non nullable term to the index (say BookIsPublished) with a default value and if no search term is entered by the user return all matching items on the BookIsPublished constant field.
Related
Hi I'm trying to get a sorted Collection from the Domino Rest Api. My database name is "Test/JSON_Views.nsf" and my views name "List".
The endpoint I use is
**/Test/JSON_Views.nsf/api/data/collections/name/List?sortcolumn=title&sortorder=ascending&count=20
But the JSON-Response entries aren't sorting by title in ascending order.
Should I make any settings to the column properties in the designer? If I set descending there for the title-column it works. But I want to change the sorting in my external java-application.
Is my endpoint correct? I use this Domino API Docu as Reference.
Add an additional sorting to your title column:
This gives the API the possibility to sort by title in both directions. You can do this with other columns too so you are very flexible in sorting this way.
The doc says that if the column isn't sorted in design then the sortcolumn parameter has no effect, so the answer is "Yes" you should change the design of the desired column. If doing that is unworkable in whatever context you use it, then create a second view and use that instead.
Hi: I am looking at the standard SAPUI 5 Smart Field demo:
https://sapui5.hana.ondemand.com/#/sample/sap.ui.comp.sample.smartfield/preview
I would like a field with a value helper, such as Currency on this screen, which displays the field description inside the input box instead of the field id.
Example:
Change the Category field from combo into a value helper (popup)
Get the field to display the CategoryName - or from the related table the LTXT field instead of the ID.
HowTo
That is easy: delete the line
from the metadata.xml file.
??? I have tried many, many things.
I doubt that anyone will reply, because there is most probably no good answer.I do not find this good functionality.
I think that I will need to change my ID field values for popup (value helper) fields to Description (ID) . Description need not be unique (one can have two relations to the same company with different ID's.)
By doing this we also "fix" the problem with the search ODATA command which searches the ID field. Of course users will want to search the descriptions.
In general SAPUI's value helper is not great. It is normal practice to use numerical ID's and descriptive descriptions. The description should be displayed and searched and not the ID. I found their filter generator on the popup screen nice - it is not all doom.
I am using Sphinx (with Thinking Sphinx v2.0 for RoR plugin),
Lets say I have several indexes on User model, lets say on 'name', 'address' and its one-to-many associations like 'posts' , 'comments' etc.
This means searching by post content would return me the User who made the post, and using :fieldmask 'rank mode' of sphinx, I am able to determine that the user was searched due to matching of 'posts'. But user has 'many' posts. So how to determine which 'post' it matched.
Is there any way, while indexing I can specify the index dynamically.?
For e.g. If I can specify index 'post_1'='< post1content >' , 'post_5'='< post5content >' as different 'fields' for user1; similarly 'post_2', 'post_7' for user2, Thus after searching It would return me user2 matched with matching fields as post_7...
Sphinx can't have different fields for each record, I'm afraid, so what you're hoping to do isn't possible with that approach.
If you need to know which posts match a query, I'd recommend conducting the search on the Post model instead, and then you can refer to a post's user? You could sort by user_id before weight, or group by user_id (so only one post per user is returned)? You'd be able to bring in user data into the Post index definition (and if a post has one user, then that data is kept to single values, instead of many, per record).
Hope this gives you some clarity with your options.
If you know, you want to search for post_5 in one query, and for post_7 in another query, you may use json as {post_1:, post_2:}.
Problem is that you have to know number of post you are searching for.
Maybe look to: https://stackoverflow.com/a/24505347/1444576 -if it is similar to your example.
sql_query=SELECT id,headline,summary,body,tags,issues,published_at
FROM sphinx_search
I am working on the search feature of my Web site and I am using Sphinx, Perl and Sphinx::Search. As long as I want to search in all the attributes and I don't restrict it to just one, everything goes well. However when the user searches for a specific tag, I can't just give the result of a fuzzy search, I want to use the power of Sphinx to search only on tags or issues, maybe sometimes the user wants to search on headline and issues.
How can I perform such a task?
You need to put it in Extended Match Mode
https://metacpan.org/module/JJSCHUTZ/Sphinx-Search-0.27.2/lib/Sphinx/Search.pm#SetMatchMode
Then you can use Extended Query syntax
http://sphinxsearch.com/docs/current.html#extended-syntax
Which includes the field search operator
#tags keyword1
(Be careful with sphinx, the word "attribute" has a specific meaning - values attached to the document, useful for sorting/grouping/filtering and returning with the resultset. Whereas I think you are talking about fields. All the columns from the sql_query you dont mark as an attribute, are a field - and full text searchable)
Hi am developing my first grails application now i want to put search method in my application.. Is it possible to match the single entered keyword with all the fields of the table.Like when i use findById it will search only on id or if i use findByName it will search only on name or findByDescription find only on description..
Is it possible to use findall or findBy* to match with all the fields like id, name, description..
If you are using a RDBMS, you can issue a query on the following lines:
SELECT .... FROM .... WHERE name like '%value%' OR description like '%value%' OR id like '%value%'
But this is going to be very inefficient. You can instead use a full text search API lucene/ solr and index entire content as part of one field and issue queries on that.