Gradle 6.0 deprecation warning for JacocoReport co

问题:

The following Gradle task, which configures JacocoReportBase:

task jacocoRootReport(type: JacocoReport) {
    ...
    sourceDirectories = files(subprojects.sourceSets.main.allSource.srcDirs)
    additionalSourceDirs = files(subprojects.sourceSets.main.allSource.srcDirs)
    classDirectories = files(subprojects.sourceSets.main.output)
    executionData = files(subprojects.jacocoTestReport.executionData)
    ...
}

produces these warnings, when building with ./gradlew assembleDebug --warning-mode all:

The JacocoReportBase.setSourceDirectories(FileCollection) method has been deprecated.
This is scheduled to be removed in Gradle 6.0. Use getSourceDirectories().from(...)
at tasks_1p10s36ydq4k8rroeiucekewi$_run_closure6.doCall(.../tasks.gradle:152)

The JacocoReportBase.setAdditionalSourceDirs(FileCollection) method has been deprecated.
This is scheduled to be removed in Gradle 6.0. Use getAdditionalSourceDirs().from(...)
at tasks_1p10s36ydq4k8rroeiucekewi$_run_closure6.doCall(.../tasks.gradle:151)

The JacocoReportBase.setClassDirectories(FileCollection) method has been deprecated.
This is scheduled to be removed in Gradle 6.0. Use getClassDirectories().from(...)
at tasks_1p10s36ydq4k8rroeiucekewi$_run_closure6.doCall(.../tasks.gradle:153)

The JacocoReportBase.setExecutionData(FileCollection) method has been deprecated.
This is scheduled to be removed in Gradle 6.0. Use getExecutionData().from(...)
at tasks_1p10s36ydq4k8rroeiucekewi$_run_closure6.doCall(.../tasks.gradle:154)

How to use the Gradle 6.0 compatible syntax (as the deprecation warning suggests) to apply the desired values with these methods (which by their name seem to be getters and not setters):

• getAdditionalSourceDirs().from(...)
• getSourceDirectories().from(...)
• getClassDirectories().from(...)
• getExecutionData().from(...) ?

回答1:

There is a setter .from, which works alike this:

task jacocoRootReport(type: JacocoReport) {
    ...
    sourceDirectories.from = subprojects.sourceSets.main.allSource.srcDirs
    additionalSourceDirs.from = subprojects.sourceSets.main.allSource.srcDirs
    classDirectories.from = subprojects.sourceSets.main.output
    executionData.from = subprojects.jacocoTestReport.executionData
    ...
}