"SQL dialect is not configured" Inspection Follow

You need to implement com.intellij.codeInsight.daemon.ProjectSdkSetupValidator. You can add it to your plugin.xml via:
"<projectSdkSetupValidator implementation="io.github.intellij.dlanguage.DLangProjectDmdSetupValidator" />"

Hi 13nixonf,

Thanks for your help, but it didn't worked for me. I just found the solution, how to do such messages:

plugin.xml:

<localInspection language="MyLanguage" enabledByDefault="true" level="WARNING"
                 shortName="SomeInspection" displayName="Some Inspection" groupName="Inspection"
                 implementationClass="de.fgalinski.somePlugin.editor.inspection.SomeInspection"/>

SomeInspection.java:

package de.fgalinski.somePlugin.editor.inspection;

import com.intellij.codeInspection.*;
import com.intellij.openapi.editor.Editor;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.psi.PsiFile;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;

public class SomeInspection extends LocalInspectionTool {
    @NotNull
    public String getShortName() {
        return "Some Inspection";
    }

    @Nullable
    public ProblemDescriptor[] checkFile(@NotNull PsiFile file, @NotNull InspectionManager manager, boolean isOnTheFly) {
        String message = "Some Message";
        SomeInspection.MyQuickFix quickFix =
                new SomeInspection.MyQuickFix();
        LocalQuickFix[] quickFixes = new LocalQuickFix[]{quickFix};
        return new ProblemDescriptor[]{
                manager.createProblemDescriptor(
                        file, message, true, quickFixes, ProblemHighlightType.GENERIC_ERROR_OR_WARNING
                )
        };
    }

    public static class MyQuickFix extends IntentionAndQuickFixAction {
        @NotNull
        public String getName() {
            return "Test";
        }

        @NotNull
        public String getFamilyName() {
            return getName();
        }

        public void applyFix(@NotNull Project project, PsiFile file, @Nullable Editor editor) {

        }

        public boolean startInWriteAction() {
            return false;
        }
    }
}