Unfiltered types don't show up in completion

[mickaelistria]

Let's make sure issue is not already fixed in snapshots first.

• I verified I can reproduce this issue against latest snapshots build

Steps to reproduce

From a fresh installation and clean workspace:

• create a basic Java project
• in build path, make it modular, and edit the modular settings in the Details tab so it adds for example --add-exports jdk.compiler/com.sun.source.tree
• In Preferences > Java > Appearance > Type Filters; make sure com.sun.* is not filtered (uncheck it)
• Add somewhere in file com.sun.source.tree.CompilationUnitTr
• Try to complete it in JDT editor, CompilationUnitTree is suggested
• Open in generic editor with JDT-LS working

I tried

• completion

I expected: CompilationUnitTree

But got: nothing

Here is some relevant log output form (<workspace>/.metadata/.log)

Tested under this environment:

• OS & version: Fedora 38
• Eclipse IDE/Platform version: Latest I-Build
• ...

Community

• I understand reporting an issue to this OSS project does not mandate anyone to fix it. Other contributors may consider the issue, or not, at their own convenience. The most efficient way to get it fixed is that I fix it myself and contribute it back as a good quality patch to the project.

[mickaelistria]

@snjeza is there a way to configure JDT-LS to unfilter some types? Could we add a listener to JDT-UI prefs and send the right didChangeConfiguraiton ?

[snjeza]

@mickaelistria Java LS uses the java.completion.filteredTypes property. You can check the following patch

diff --git a/com.redhat.eclipseide.jdtlsclient/src/com/redhat/eclipseide/jdtlsclient/InProcessJDTLSConnectionProvider.java b/com.redhat.eclipseide.jdtlsclient/src/com/redhat/eclipseide/jdtlsclient/InProcessJDTLSConnectionProvider.java
index 3af627d..03dbe36 100644
--- a/com.redhat.eclipseide.jdtlsclient/src/com/redhat/eclipseide/jdtlsclient/InProcessJDTLSConnectionProvider.java
+++ b/com.redhat.eclipseide.jdtlsclient/src/com/redhat/eclipseide/jdtlsclient/InProcessJDTLSConnectionProvider.java
@@ -59,7 +59,7 @@ public class InProcessJDTLSConnectionProvider implements StreamConnectionProvide
 		clientInputStream = Channels.newInputStream(serverOutputToClientInput.source());
 		clientOutputStream = Channels.newOutputStream(clientOutputToServerInput.sink());
 		listener = launcher.startListening();
-		server.connectClient((JavaLanguageClient)launcher.getRemoteProxy());
+		server.connectClient(launcher.getRemoteProxy());
 		
 		// Store the output streams so we can close them to clean up. The corresponding input
 		// streams should automatically receive an EOF and close.
@@ -107,7 +107,9 @@ public class InProcessJDTLSConnectionProvider implements StreamConnectionProvide
 							"implementationsCodeLens", Map.of( //
 								"enabled", false), //
 							"referencesCodeLens", Map.of( //
-								"enabled", false))),
+								"enabled", false),
+					        "completion", Map.of( //
+					            "filteredTypes", List.of("java.awt.*")))),
 					"extendedClientCapabilities", Map.of(
 						"classFileContentsSupport", true, //
 						// We want JDT-LS to keep the IDocument intact on change, as they're