Gradle : Unable to generate QueryDSL classes

Question

Gradle version: 5.1

Java version: 11

I have the following task defined in gradle file to generate QueryDSL classes:

task generateQClasses (type: JavaCompile) {
    source = sourceSets.main.java.srcDirs
    classpath = sourceSets.main.compileClasspath
    destinationDir = file('src/main/java')
    options.annotationProcessorPath = configurations.annotationProcessor
    options.compilerArgs = ['-proc:only', '-processor', 'com.querydsl.apt.jpa.JPAAnnotationProcessor', '-Aquerydsl.packageSuffix=.querydsl']
}

Below is my dependencies block:

annotationProcessor "com.querydsl:querydsl-apt:4.2.1:jpa"
annotationProcessor "org.hibernate.javax.persistence:hibernate-jpa-2.1-api:1.0.2.Final"
annotationProcessor "javax.annotation:javax.annotation-api:1.3.2"

If I execute `gradlew generateQClasses, I see the following in the logs:

Attempt to recreate a file for type foo.bar.QClass
error: Attempt to recreate a file for type foo.bar.QClass

It fails with error saying the file already exists. How can I configure this task to overwrite the files if they exist?

Also, the above config is the config for the root project and it has 5 subprojects. AnnotationProcessor is able to overwrite the files in one of the sub project but not the others (all the subprojects have the same config). Am I missing anything?

Answer 1

I had the same behavior here... It happens when the generated sources folder isn't empty. Try to execute with gradle clean before. Then will be OK. But I'm trying to replace the default QueryDSL task, with the task that you've done. If I have success, I'll update the answer here.