In Elastic Search, to add new fields while running the application we have to provide
"dynamic":true
More info about the same: https://www.elastic.co/guide/en/elasticsearch/reference/current/dynamic.html
Is there any functionality which can replicate same behaviour in Vespa? I was not able to find in vespa documentation.
Kindly help me in this regard. Thank you.
https://docs.vespa.ai/en/schemas.html#schema-modifications is the best place to start - just modify the schema with new fields and redeploy the application. The new fields can not have a default value, they are empty. It is not necessary to restart Vespa, this can be done on a running instance.
Dynamic fields automatically created from data is not supported in Vespa. You should not use this; it's a malfeature.
If the data in question is structured, you can often achieve what you need here by using a map. Otherwise, it's easy and safe to add new fields to the schema and redeploy.
Related
My table has a primary key other than id and react-admin enforces id to be returned in the response by the DataProvider. So can I configure different primary keys/identifiers for my resources?
I am using this library - https://github.com/Steams/ra-data-hasura-graphql
Right now I have made few changes in my library code to make this work, but I need an idea to implement it, so anyone using this library doesn't need to go thru whole code to make it work.
const config = {
'primaryKey': {
'tableName': 'primaryKey1', 'tableName2': 'primaryKey2'
}
};
I was thinking of something like passing configuration like this.
Thanks.
I don't believe it is currently possible with the 0.1.0 release. However in hasura you can expose the column with a different name
hasura column exposed name
I want to set ‘http.max_content_length’ at runtime. Is it possible and how one can do it? And if one can do it at runtime can he also change publishing_port/host?
No. You can't. As per elasticsearch documentation, http.max_content_length is not dynamically updatable. For more details refer this link..
Changes we do in YAML file will get reflected in node after once you restart the node.
I try to add AutoSave support to the Core Data File Wrapper example
Now if i have a new/untitled document writeSafelyToURL is called with the NSAutosaveElsewhereOperation type.
The bad thing is, I get this type in both typical use cases
- new file: which store a complete new document by creating the file wrapper and the persistent store file
- save diff: where the file wrapper already exists and only an update is required.
Does somebody else already handled this topic or did somebody already migrated this?
The original sample use the originalStoreURL to distinguish those two use cases, which solution worked best for you?
Thanks
I want to build custom filtering header for Vaadin tables.
Can you please give some examples or solution to this problem.
I want to add a combo box or check box that will refine the search in the table like Excel columns.
We faced the problem of adding custom filters for Vaadin Table in our project as well.
As a solution we added a dynamic filter form above the table. It has become flexible and agile enough to apply filters.
We created Vaadin Addon in order to share our solution - Lexaden Grid.
You can find more information by the following link:
http://www.lexaden.com/main/entry/lexaden_grid
At the moment it is quite hard to add a custom component to do filtering with to the header of a table. It would require you to make your own version of Table by inheritance/copy&paste (not sure what is enough), and that is something most people wan't to avoid at the moment if anyway possible. The current implementation of the Table component is one of the most complicated components of Vaadin. It is doable if you insist putting components in header, but prepare for some serious thinking to get things to work.
I'd suggest making the filtering of data in containers with components just next/above your table. Hiding the table header is sometimes acceptable if there's no crucial information shown there. If you want something precisely on the header, it would require some empty headers and CSS positioning components on correct place.
You can always group table and other filtering components to one CustomComponent for easier abstraction.
Book of Vaadin is a very good reference for vaadin implementation. The link consist of an example code like:
// Define the properties
table.addContainerProperty("lastname", String.class, null);
table.addContainerProperty("born", Integer.class, null);
table.addContainerProperty("died", Integer.class, null);
// Set nicer header names
table.setColumnHeader("lastname", "Name");
table.setColumnHeader("born", "Born");
table.setColumnHeader("died", "Died");
Is this what you ask for? If it isn't, can you please specify your question a bit more clearly?
edit: Vaadin Sampler also contains handful code samples.
I have a Informatica session which is linked to a wrong mapping.
How do i change the mapping from M1 to M2 in the same session S1 and Workflow W1 WITHOUT importing/exporting as XML and making the changes ???
Invalidate the current mapping temporarily and refresh the session. This would allow you to choose a different mapping for your session. Pick the new one.
Don't forget to validate your old mapping.
Source: ITTOOLBOX
XML import/export is the only "official" way to do this. If you don't want to do that, you will have to create a new session S2 and attach the mapping M2 to that session.
One possible extra option, with disclaimer: If you have access to Informatica's Oracle database (that holds the metadata), you could perhaps make this change directly there. But you would really have to know what you're doing, or else you are likely to mess things up pretty badly. This is certainly not the recommended way of making changes!
The informatica metadata tables confuses you , dont change at that level. All the way is invalidate the mapping by removing port or by syntax errors. Workflw asks you new mapping. This is the best way apart all. Informatica should add new feature to allow us to do this.
XML export is one of the best way.
Export the session object and then edit the xml file where you need to change the mapping name. Now when you'd import it, it'll ask for the mapping to associate with.
This way you can do it.