How do I get IntelliJ to recognize gradle generated sources dir? - gradle

Question

So I have an XJC javaExec that spins like a top but IntelliJ doesn't recognize the generated output despite having marked generated-src/java as such. Do I need to tweak the idea plug-in or something?
Note: The plug-in itself is loaded in subProjects from the root build.gradle.
XJC Project:
description = "Generates sources and compiles them into a Jar for $project"
configurations { xjc }
dependencies {
xjc 'org.glassfish.jaxb:jaxb-xjc:2.2.11'
xjc 'org.glassfish.jaxb:jaxb-runtime:2.2.11'
}
task xjc (type:JavaExec) {
doFirst{
File generatedSrcDir = file("$buildDir/generated-src/java")
if (!generatedSrcDir.exists()) {
generatedSrcDir.mkdirs()
}
}
main = "com.sun.tools.xjc.XJCFacade"
classpath configurations.xjc
def argsList = [
"-mark-generated",
"-no-header",
"-verbose", // or -quiet or nothing for default.
"-target", "2.1",
"-encoding", "UTF-8",
"-d", "$buildDir/generated-src/java",
"-catalog","$projectDir/src/main/resources/commons-gradle.cat",
file("$projectDir/src/main/resources/v1/") ]
args argsList
inputs.files files(file("$projectDir/src/main/resources/v1/"))
outputs.files files(file("$buildDir/generated-src/java"),file("$buildDir/classes"))
}
compileJava {
dependsOn xjc
source "${buildDir}/generated-src"
}
In the project that depends on this one I simply have:
compile project(":path:to:schemas:the-test-schema")
I've tried:
idea {
module {
def buildDir = file("$buildDir")
def generatedDir = file("$buildDir/generated-src")
def listOfDirs = []
buildDir.eachDir { file ->
if (file.name != buildDir.name && file.name != generatedDir.name)
listOfDirs.add(file)
}
excludeDirs = listOfDirs.toArray()
generatedSourceDirs += file("$buildDir/generated-src/java")
scopes.COMPILE.plus += [ configurations.xjc ]
}
}

Answer 1

I'll point out a solution by Daniel Dekany, from a Gradle discussion thread actually linking to this question. To quote:
apply plugin: "idea"
...
sourceSets.main.java.srcDir new File(buildDir, 'generated/javacc')
idea {
module {
// Marks the already(!) added srcDir as "generated"
generatedSourceDirs += file('build/generated/javacc')
}
}
Works well for me.

Answer 2

The code of this answer, rewritten using Kotlin DSL, will look like this:
plugins {
idea
}
val generatedSourcesPath = file("out/production/classes/generated")
java.sourceSets["main"].java.srcDir(generatedSourcesPath)
idea {
module {
generatedSourceDirs.add(generatedSourcesPath)
}
}

Answer 3

In my case, it didn't work unless I added the generate sources directory to both sourceDirs and generatedSourceDirs:
def generatedSourcesDir = file('src/generated/main/java')
idea {
module {
sourceDirs += generatedSourcesDir
generatedSourceDirs += generatedSourcesDir
}
}

Answer 4

in 2020 you probably did not refresh the project in IDEA
because it actually works oob.
30 mins of reading outdated solutions :(

Answer 5

It's happening in some versions. There are some issues that we can look at and read carefully.
But for myself, from the IntelliJ IDEA 2019 the solutions below aren't working anymore:
https://youtrack.jetbrains.com/issue/IDEA-210065 (it says Obsolete)
https://youtrack.jetbrains.com/issue/IDEA-152581 (it's saying Fixed here)
https://youtrack.jetbrains.com/issue/IDEA-117540/generated-sources-inside-output-directory-are-excluded-by-default
https://intellij-support.jetbrains.com/hc/en-us/community/posts/4906059373074-Class-defined-in-generated-sources-not-found-by-Intellij-editor-but-found-by-compiler-gradle-build-
Discussion in the Gradle forum about this: https://discuss.gradle.org/t/how-do-i-get-intellij-to-recognize-gradle-generated-sources-dir/16847
According to #Daniel Dekany, this worked in IDEA 2017.1.2, and worked for me until 2019:
plugins {
id 'idea'
}
idea {
module {
generatedSourceDirs += file('build/generated/sources/annotationProcessor')
}
}
But from 2019 to 2022, the solution that worked for me was:
def generatedDir = "${buildDir}/generated/sources"
sourceSets {
main {
java {
srcDir generatedDir
}
}
}
idea {
module {
generatedSourceDirs.addAll(file(generatedDir))
}
}

Answer 6

ext {
// path to IDEA generated sources directory
ideaGeneratedSourcesDir = "$projectDir/src/main/generated"
}
compileJava {
//……
options.annotationProcessorGeneratedSourcesDirectory = file(ideaGeneratedSourcesDir)
//options.headerOutputDirectory.set(file(ideaGeneratedSourcesDir)) (tested no effect)
//……
}
// above work for me, and i try all method this question mentioned it's not work! env: idea2019.3, wrapped gradle6.3-all, zh-CN, JDK8, [x] annotation processing is disabled(no effect, in global settings ), no idea plugin([x]plugins {id idea}), [x]sourceSets no need to set(genereated srcDir)
myCodeGenExample:
task vertxCodeGen(type: JavaCompile) {
group 'build'
source = sourceSets.main.java
destinationDir = file(ideaGeneratedSourcesDir)
classpath = configurations.compileClasspath
options.annotationProcessorPath = configurations.annotationProcessor
options.debugOptions.debugLevel = "source,lines,vars"
options.compilerArgs = [
"-proc:only",
"-processor", "io.vertx.codegen.CodeGenProcessor",
// where the non Java classes / non resources are stored (mandatory) - the processors requires this option to know where to place them
"-Acodegen.output=$destinationDir.absolutePath",
]
}
refresh the gradle, continously exist