I'm trying to use some existing code on Google App Engine, and it appears that there's a problem with my use of the CachedRowSetImpl class. I don't see this class in the JRE Class White List. Does anyone know where to get a CachedRowSet implementation when running in the GAE? In Java 7 there is the new class, RowSetProvider, which can be used to obtain a RowSetFactory, from which can be obtained a cached row set object; but RowSetProvider isn't on the white list either! Many thanks for any help!
Update:
I'm not sure of the correct answer for this issue, but in the end I just removed the references to the CachedRowSetImpl, and went with the plain ResultSet. I wasn't using any of the functionality specific to the cached row set, and so this really wasn't a problem at this time.
Related
I've been trying my very best not to ask any nosy question here in stackoverflow, but it has been almost one week since I got stuck in this problem and I couldn't find any solution.
I already have my working website built with CakePHP 3.2. What the website basically does is scrape Twitter for tweets containing a given search term, check if it's already in my database, and store it if it doesn't yet exist. Twitter's JSON response has this "tweet_id" property, and I've been using that value to check for whether I should ignore or append a specific tweet to my DB. While this might be okay while my database is small, I suspect it's going to slow things down considerably when my tables grow bigger. Thus my need for ElasticSearch.
My ElasticSearch server is running on my Arch Linux install, and I've configured my app to point to the said server. Also, I have my "Type" object named the same way as my "Tweets" table (I followed the documentation until the overview part http://book.cakephp.org/3.0/en/elasticsearch.html). This craps out an "Unknown method "alias" error, and following Google searches led me to creating an alternate pagination class since that was what some found to be the cause of the error (https://github.com/lorenzo/audit-stash/issues/4), which still doesn't fix things.
I'm not sure if I got this right. I installed the ElasticSearch plugin with the assumption that all I have to do is name the Types the same name as my tables, since to me the documentation "implies" that this should be done on top of the Blog Tutorial they did to "improve query performance".
TLDR, how is this supposed to work? Is my above assumption right? Do I name the Types differently and index everything myself? I'm not sure if there's just too much automagic, or I'm just poor at these sort of things. And yes, I'm new to frameworks (but not PHP, among other languages)
Thanks in advance!
I'm working on the front end of an app that uses Solr for data storage. Currently I have an empty index, but it'd (understandably) be a lot easier for me if some dummy data was returned so I could make sure that it's output correctly on the front end.
If I was working with and RDBMS (let's say postgres) I'd open up a GUI (e.g. pgadmin) and type data manually into a few rows to achieve this goal. I have access to the Solr web interface, but I can't see any obvious call to action saying INSERT YOUR DATA HERE. The closest thing I can find to an answer on the web is this SO thread, but it's still not quite the droids easy GUI-based solution I'm looking for.
So, my question is: Is the a way to quickly and easily insert some data equivalent to the RDBMS method mentioned above?
Make sure you have defined a schema in schema.xml.
SOLR does indeed have a (limited) html GUI, which on a local installation is probably found at localhost:8983/solr (default). If you can get to the base admin page, then on the left there is a small combobox where you can select a core/collection. If you click on THAT, then you get a list of options that emerges, and you can pick 'documents' to get a similar GUI to what I think you expect from postgres/RDBMS/whatnot.
http://localhost:8983/solr/#/collection1/documents is the URL on a default SOLR installation that I have. This should work as long as you don't have default cores. (Replace collection1 with your collection name and localhost:8983 with wherever your solr is hosted/the port).
I'm using GAE 1.8.1 and I've hit an issue with Objectify with the new scattered ID system. At least I think it's Objectify, I'm not sure (Using Objectify 4 RC1). I'm getting this..
Caused by: java.lang.IllegalArgumentException: id cannot be zero
at com.google.appengine.api.datastore.KeyFactory.createKey(KeyFactory.java:52)
at com.google.appengine.api.datastore.KeyFactory.createKey(KeyFactory.java:47)
at com.googlecode.objectify.Key.<init>(Key.java:91)
at com.googlecode.objectify.Key.create(Key.java:39)
at com.googlecode.objectify.impl.cmd.LoadTypeImpl.id(LoadTypeImpl.java:77)
The records get put in the datastore correctly as they have an ID, but this is on fetching the data out.
So I have to roll back to what it was before for the time being. It states here that you can specify the legacy ID generation with modifying the auto_id_policy in appengine-web.xml. I've tried adding this to the file:
<auto-id-policy>legacy</auto-id-policy>
But it doesn't work, or at least it might work if the XSD it validates against supports this tag. You can't deploy the app because of this.
we are aware of this issue and working on a fix.
The problem appears to be you are passing in 0 to load().id(). I don't think this has anything to do with scattered ids or Objectify.
I'm having a problem getting started with Google BigQuery. I'm certain I have done everything correctly to create and configure the account. But when I go to the web interface, the it seems unable to find my project. I cannot create/upload any new data and I can't even query the sample data set. All the interface returns is:
Not Found: Project [my-project-id]
However, in the same window, the project name and ID is being listed in the panel on the left...so it looks like BigQuery is aware of my project in some sense. Screen shot below:
I am at a loss of how to rectify this. Does anyone have any ideas of something I might be missing in configuration and/or setup?
Best regards,
Dan
Did you recently set the ID on your project (e.g. xs-analytical-park-g)? If so, there may be a dataset that uses the old name (which was the numeric id of the projcet) which confuses the UI. We periodically search for changed project names and apply updates, but sometimes this can take a while.
I've just checked and it looks like our data should be up-to-date with respect to the project ids, so please let me know if this problem still persists.
I'm all new to magellan, and as an attempt to learn it, I've built a custom view engine for supporting windows forms as specified in the documentation at codeplex.
But how to register this new ViewEngine? There it is given,
ViewEngines.Engines.Add(new FormsViewEngine(new DefaultViewActivator()));
But what I can see is that, ViewEngines is not a Static Class and moreover it does not have a Engines Property. I know I'm missing something, but what is it?
So, How to register my ViewEngine to Magellan? Where and When should I register it?
PS: I'm using the latest update of magellan.
You are correct, the view engines are now configured on the ControllerRouteCatalog.
One of the goals in Magellan 2.0 was to reduce the number of static locators.
Seems like things have changed a bit. A few search for references of ViewEngine Class in the Magellan source gave the answer.
Now ViewEngines just provide default collection and no more handles ViewEngine registrations. I managed to create my own ViewEngineCollection and pass it to the contructor of ControllerRouteCatalog.
My bad, I should have done that before. Thanks anyway.