I need to populate a dropdown with all field names in a lucene index and need to show those values. I was able to do it successfully using
var luceneIndexReader IndexReader.Open("D:\path_to\index_directory", true);
var allAvailableFieldNames = luceneIndexReader.GetFieldNames(IndexReader.FieldOption.ALL);
Only problem is I need to include only 'Stored' fields in the drop down. This list includes all 'Indexed' and/or 'Stored' fields in it. Is there a way to query/search the indexes if a field has any 'stored' values and thereby filter out this list?
The problem is that every document in the index can have different fields containing stored fields. Since those are not storef as inverted index (they are stored per document) you can't retrieve them from the IndexReader. You need to retrieve one specific document, e.g. Document doc = indexReader.document(1); and call Fieldable fields[] = doc.getFields();. Then iterate over them and checking: field.isStored();.
Late at the party, but in the meanwhile you can just call FieldInfos# GetEnumerator()
See https://github.com/Shazwazza/lucenenet/blob/docs-update-jan2020/src/Lucene.Net/Index/FieldInfos.cs/#L168
Related
I have an Azure SQL database, and my records inside table Spiderfood_RITMData in that database includes 13 different fields. Lots of stuff. I have confirmed in SQL-SMS that the records have data in each field.
There are way more items in the database than PowerApps can see using LOOKUP (1600-9000 records or more). However, I know FOR A FACT that there is only ONE record that has any given value in the NUMBER column. It's not a primary key, but it is unique in the table.
In PowerApps, I am trying to pull that field so that I can eventually parse out the individual items.
So, the commands I'm trying are:
ClearCollect(MLE_test1, Filter('Spiderfood_RITMData', "RITM2170467" in Number));
ClearCollect(MLE_test2, Search('Spiderfood_RITMData',"RITM2170467", "Number"));
However, the Collection results for MLE_test1 and MLE_test2 both are empty EXCEPT for the value of NUMBER. Say what?!
I'm trying to use the examples posted on https://learn.microsoft.com/en-us/powerapps/maker/canvas-apps/functions/function-filter-lookup but I am honestly getting baffled by this.
How should I be formatting this call such that I can pull the whole record?
Big picture explanation: I need to do a lot of data LOOKUPS into my table Spiderfood_RITMData table, but it has way more than 2000 rows, and PowerApps will not perform the Lookup correctly. So my presumably smart idea is to create a MUCH SMALLER "version" of Spiderfood_RITMData as a local collection, using a more delegateable function (such as FILTER or IN). If I filter by all records containing the values of NUMBER, then I go from, say a 10,000-record SQL table to a 10-record Collection. And I can do LOOKUPS against that collection for the rest of the function (uh, I think -- I'm still trying to experiment accordingly). Please let me know if this is crazy or not.
LookUp is just used to get one record, instead try this:
ClearCollect(MLE_test1, Filter('Spiderfood_RITMData', "RITM2170467" = Number));
This gets a collection with all the items where Number is = to "RITM2170467"
Collections are limited to only 2000 records in each collections.
I had same issue. Go to App settings. Under Upcoming Features make sure Explicit column selection is turned off. Hope this does it for you.
I created a table in SAP via se11, then I used the table maintenance generator.
Now I edit the table via sm30:
The second and the third column: Both have the heading "Feldname".
The first "Feldname" column is called COLUMN_NAME and its data element is "Fieldname".
The second "Feldname" column is called AUTH_FIELD and its data element is "XUFIELD"
I would like to see the column names which I gave the columns in se16 (COLUMN_NAME, AUTH_FIELD) in the heading.
How to prevent the table maintenance generator from giving other names in the headings?
Option 1 - use custom data elements:
Instead of using Fieldname and XUFIELD data elements, you can create your custom data elements and give them what header you would like.
(You will have to regenerate table maintenance)
Option 2 - editing screen
When generated the table maintenance, you supplied a function group and a screen number.
Go to SE80 -> Function Groups -> <function_group_supplied> -> screens -> <screen_supplied>.
Then edit it as you want.
Note: Modifying a generated object is considered risky. Your customized changes might be overwritten in a future regeneration.
Add custom data elements with suitable descriptions. Let the new data elements refer to the original ones (resp. the domains) to avoid having to reinvent everything.
Data element descriptions can be translated.
You can set different descriptions for different lengths, e.g. "Field" for the narrow column with length 10, and "Field name" for a wide label with length 30.
Regenerating the maintenance screen won't accidentally delete the changed descriptions.
I would like to add table in my docx template. I know how to do it with just a simple field and how to use that template and write the value to it. But how can I create a table and write to the template. Assuming I have a list of Students object, how am I going to write it in a table?
This is how you add field name.
Quick Parts > Fields > Choose MergeField in the category and write the
desired field name
And here's how to write the value to it using docx4j
Map<DataFieldName, String> map = new HashMap<DataFieldName, String>();
map.put(new DataFieldName("myName"),"yourName");
MailMerger.setMERGEFIELDInOutput(MailMerger.OutputField.DEFAULT);
MailMerger.performMerge(template, map, true);
template.save(new File("C:/temp/OUT_SIMPLE.docx") );
Assuming you want one row per list item, the easiest way is to iterate through the list, writing your table rows.
To generate suitable code, create a Word document with the table looking as you want it, then generate corresponding code.
Alternatively, you could use OpenDoPE content control data binding, wrapping a repeat around a table row. This is a more generic solution, but with a learning curve...
In several notes applications, instead of handling related data as separate documents, if the size of the data is small (less than the 32k limit), I'll make several multi valued fields and display it in what I call a "List Panel". It's a table where each column displays one multi-value field. Since fielda(1) goes with fieldb(1) that goes with fieldc(1) there is a concept of rows. (I did a similar thing in my auditing routine discussed here )
It is always assumed that each field has exactly the same number of elements.
All the multi-value fields are then stored on the single document. This avoids several coding conventions that made my eyes bleed like having date changed, who changed it, new value fields for each field we wanted to audit. Another thing that this kept to a minimum was having to provide multiple fields for the same thing that locked you into a limit. Taxrate1, Taxrate2, Taxrate3, etc...
In my "Listpanel" the first column is a vertical checkbox. (One for each element in my lists) This is so I can select one item to bring up and edit, or select multiple values to delete "rows" or apply some kind of mass change to them.
What would be the best way to handle this under xPages to get this functionality? I tried making a table but am having the devil of a time to get the checkboxes to line up with their corresponding data items.
Views and dojo-grids seem to assume we're using a document for each row.....
This TableWalker may provide what you want http://www-10.lotus.com/ldd/ddwiki.nsf/dx/Tutorial-Introduction-to-XPages-Exercise-23
It was created when XPages was all very new, so it's SSJS rather than Java. But if you're comfortable wiith Java, converting it probably won't be a challenge.
You could use a repeat control to display the values and build a table using the table row tags in the repeat. You would want to calculate the id of the checkbox to be able to take an action on that selected row. The repeat var would be just one of your multi-value fields and you use the index of the repeat to get the value for that row from the other multi-value fields.
I have indexed approximately 1000 documents in Solr. But all of them are missing a field. I need to add a field to all these documents, and this field will have the same value for all of them. I do not have access to these documents to index them again. Is there any way to do this without re-indexing all the data again?
Unless you've configured your schema to store all values, no, there is no usable way to add a field to the documents without reindexing. If you all fields are stored, you can use atomic updates to add a new field for a document, so you could query Solr for the ids of all existing documents and perform an update that way.
Otherwise you're going to have to go with the suggestion from #michielvoo, and return a static value from the query string .. but then you could also just append it in your application before returning it to the user (or, you could add the field as a default value for the request handler in solrconfig.xml, so that you can edit and change it server side).