Problems during content assist (only happens with '@')

[seongbin9786]

Related Issue

#209

Environment

• OS: Windows 10 x64
• IDE: Spring Tool Suite 4 (4.0.2 RELEASE + it says there's nothing to update)
• Spring Boot with Maven
• Spock

Symptoms

1. Type @ around class/method/field/...
2. Type Ctrl + Space (it's a shortcut for Auto Complete)
3. Stops for a bit (>= 5 sec)
4. Error Prompt pops up
5. Click 'OK' button then panel is still activated (picture below)
   • it works fine while the panel is open

It doesnt happen when..

1. Type @ with one or more letter

   • LIKE:
     • @W - suggestion works normally - such as WebMvcTest
     • @D - suggestion works normally - such as DataJpaTest

2. Or Type anything other than @

   • works perfectly fine

The error prompt

Suggestion panel after the prompt closed

[eric-milles]

What version of Groovy Development Tools do you have? If you scroll down in the proposals are there annotations proposed? I think it is just taking some time to process your classpath.

[seongbin9786]

Thanks for your response :)

1. Groovy Development Tools 3.2.0.SNAPSHOT
2. Groovy 2.5.4 (packed within spock-core-1.2-groovy-2.5)

Annotations are proposed as expected:

Loading suggestions takes too much time therefore the error prompt pops up quite often 😢

[eric-milles]

Some background information for any interested parties: Groovy cannot satisfy this request from the Java annotations index alone. Groovy annotation collector types like @Canonical and @CompileDynamic are compiled to regular classes from Java's perspective. So, the Groovy completion processor needs to examine all classes to determine if any are annotation collectors. In a project with many dependencies, this can take some time.

With some prefix character(s), the names index can cut down the number of types that must be examined quite a bit and so you should experience "normal" responsiveness in that case.

[seongbin9786]

Awesome! Thank you very much 😄