Passing parameter to app() expression not working in application insights - azure-application-insights

I'm trying to pass a variable to the app() expression in application insights logs
app('identifier').requests - works
let e='identifier';
app(e).requests
Does not work with an error
Query could not parse at 'app' on line [2,0]
Tried double quotes, escaping toscalar, tostring... Always the same result.
Thank you everybody

(I'm a part of Application Insights team)
It is not possible (at least today). This limitation comes from this context:
There is an engine which runs raw KQL queries against resources. The engine doesn't know anything about "app" keyword.
There is something like preprocessor which analyzes a query and determines against which resources actually to run a query (and removes "app" from a query). This preprocessor cannot run KQL queries (at least today) and as a result it is not possible to use KQL to come up with dynamic resource identifiers.

Related

Workaround for output=graph with bazel cquery

I'm trying to obtain a dependency graph (either as an image or in text-form) from a bazel cquery. According to the documentation, the option --output=graph is currently only supported by bazel query, but not by cquery. Unfortunately, in our project it's not possible to use query since it fetches some external dependencies with restricted access. Only using a config (with cquery) prevents fetching these restricted dependencies.
Is there a work-around to somehow get a graph-like structure from cquery? The default output is just a flattened list which seems to contain no information on the inter-dependencies between the targets.
If the inter-dependencies can somehow be printed, I guess it would be quite easy to reconstruct an image from it.
The following works: Using query instead of cquery and appending the flag --keep_going to ignore errors caused by external dependencies that cannot be fetched by everybody. Then --output=graph can be used.
Note: The result might be different from a configured cquery, but for our purposes, it doesn't matter much.

How does one expose constants in a java google app engine Endpoints API?

Simple question -- how do you expose constants in a java google app engine Endpoints API?
e.g
public static final int CODE_FOO = 3845;
I'd like the client of the Endpoints to be able to match on CODE_FOO rather than on 3845. I'll end up doing enum wrappers (which probably is better anyway) but I'm just starting to be curious if this is even doable? Thx
Note that this isn't a full answer but here is a workaround: in Android Studio, create a very light-weight "common" java project and shove anything you want to keep in sync there such as constants as well as common types that you want exposed (e.g. an enum representing all possible return / error codes, etc).
This way you should get pretty decent compiler-time safety and keep these guys in sync.
Please feel free to comment if anyone has better suggestions.
This is unfortunately a Law of Information (ahem). If you have a message protocol you defined, both sides of the interaction need to be aware of the messages that could be passed. There's no other way for the client to be aware of what it needs to respond to. Ajax libraries hard-code the number "200" to be able to detect a successful request, as one example.
Yes, just use a switch statement on strings inside your client code. Or, you could use a dictionary of strings pointing to functions and just call the function after de-referencing the dictionary given the string you got.

How to call calabash xml from a Java program

I try to set up a web based application using spring and xslt. Since i always use xslt in a pipelining style, i would like to use calabash. Is there a possibility to call calabash from Java? I read thru the documentation on http://xmlcalabash.com but there is only a description how to use it from command line. I also tired to find some javadoc on githup but wasn't successful. Obviously, there is the Main class with the main() method and i could supply the command line parameters as a string array...
I wonder if there is a better way to do it.
I looked into this recently too. I took a pragmatic approach where I call Main.run(), and pass in a string array that I generate from a (File)Properties object. It doesn't allow passing in file inputs as streams or sources however, they must reside on the file-system.
Likely there are nicer ways. You could for instance look into http://expath.org/ . There should be sources of that project. The webapp modules (formerly known as servlex?) seems to provide XMLCalabash integration.
HTH!

Is there a way to validate the syntax of a Salesforce.com's SOQL query without executing it?

I'm writing an API that converts actions performed by a non-technical user into Salesforce.com SOQL 'SELECT', 'UPSERT', and 'DELETE' statements. Is there any resource, library, etc. out there that could validate the syntax of the generated SOQL? I'm the only one at my company with any experience with SOQL, so I'd love to place it into a set of automated tests so that other developers enhancing (or fixing) the SOQL generation algorithm know if it's still functioning properly.
I know one solution here is to just make these integration tests. However, I'd rather avoid that for three reasons:
I'd need to maintain another Salesforce.com account just for tests so we don't go over our API request cap.
We'll end up chasing false positives whenever there are connectivity issues with Salesforce.com.
Those other developers without experience will potentially need to figure out how to clean up the test Salesforce.com instance after DML operation test failures (which really means I'll need to clean up the instance whenever this occurs).
You might solve your problem by using the SoqlBuilder library. It generates SOQL for you and is capable of producing SOQL statements that would be quite error prone to create manually. The syntax is straight forward and I've used it extensively with very few issues.
I found another way to do this.
Salesforce.com posted their SOQL notation in Backus-Noir Form (BNF) here:
http://www.salesforce.com/us/developer/docs/api90/Content/sforce_api_calls_soql_bnf_notation.htm
This means you can use a BNF-aware language recognition tool to parse the SOQL. One of the most common tools, ANTLR, does this and is free. Following the ANTLR example, pass the SOQL grammar into its grammar compiler to get a Lexer and a Parser in your desired language (C#, Java, Python, etc.). Then you can pass the actual SOQL statements you want to validate into the Lexer, and then your Lexer tokens into your Parser, to break apart the SOQL statements. If your Lexer or Parser fails, you have invalid SOQL.
I can't think of a way to do this from outside of Salesforce (and even in Apex I've only got one idea right now that may not work), but I can think of two suggestions that may be of help:
Validate queries by running them, but do them in batches using a custom web service. i.e. write a web service in Apex that can accept up to 100 query strings at once, have it run them and return the results. This would drastically reduce the number of API calls but of course it won't work if you're expecting a trial-and-error type setup in the UI.
Use the metadata API to pull down information on all objects and their fields, and use those to validate that at least the fields in the query are correct. Validating other query syntax should be relatively straight forward, though conditionals may get a little tricky.
You can make use of the salesforce develop nuget packages that leverages SOAP API

Accessing CoreData tables from fmdb

I'm using CoreData in my application for DML statements and everything is fine with it.
However I don't want use NSFetchedResultsController for simple queries like getting count of rows, etc.
I've decided to use fmdb, but don't know actual table names to write sql. Entity and table names don't match.
I've even looked inside .sqllite file with TextEdit but no hope :)
FMResultSet *rs = [db getSchema] doesn't return any rows
Maybe there's a better solution to my problem?
Thanks in advance
Core Data prefixes all its SQL names with Z_. Use the SQL command line tools to check out the your persistent store file to see what names it uses.
However, this is a very complicated and fragile solution. The Core Data schema is undocumented and changes without warning because Core Data does not support direct SQL access. You are likely to make error access the store file directly and your solution may break at random when the API is next updated.
The Core Data API provides the functionality you are seeking. IJust use a fetch request that fetches on a specific value using an NSExpressionDescription to perform a function. This allows you to get information like counts, minimums, maximums etc. You can create and use such fetches independent of a NSFetchedResultsController.
The Core Data API is very feature rich. If you find yourself looking outside the API for a data solution, chances are you've missed something in the API.

Resources