Gradle downloading source dependencies

Question

In gradle I have the following build.gradle which results in a lot of JARs being copied to the 'sources' folder, but only the jersey-media-moxy-2.22.2-sources.jar actually contains source code:

defaultTasks 'run'

repositories {
    mavenCentral()
}

configurations {
    sources {
        description = 'sources download'
        transitive = true
    }
    copysource {
        extendsFrom sources
    }
}

dependencies {
    sources group: 'org.glassfish.jersey.media', name: 'jersey-media-moxy', version: '2.22.2', classifier: 'sources'
}


task copySources(type: Copy) {
    println 'Copying dependencies to sources directory'
    into "sources/"
    from configurations.copysource
}

task run (dependsOn: ['copySources']){
    println 'Downloading JARs'
}

run << {
    println 'Downloads complete. Finished.'
}

How can I modify the build so that all source code (including transitive/dependency sources) are obtained? I don't want non-source jars. I do not understand why the classifier is not applied transitively so please clear up my misunderstanding.

Also, I understand that this is not the best way to use gradle. This is (part of) a temporary step until we migrate the build system.

Answer 1

Primarily we have to remind it that

we need to add 2 things first in idea's module section or eclipse classpath section

idea {
    module {
            //if you love browsing Javadoc
            downloadJavadoc = true

            //if you love reading sources :)
            downloadSources = true
    }
}

or

apply plugin: 'java'
apply plugin: 'eclipse'

eclipse {
    classpath {
       downloadSources=true
       downloadJavadoc = true
    }
}

Resource Link:

1. https://docs.gradle.org/current/dsl/org.gradle.plugins.ide.idea.model.IdeaModule.html
2. Dependency Management

Secondly,

we need to remove mavenLocal() portion from repositories section and repositories will be placed in top most section. That you have already done it.

repositories {
    mavenLocal() // remove this
    mavenCentral()
}

Thirdly,

Sometimes you don't see the sources in Eclipse WTP although they're downloaded by gradle. In such case you need to manually push Web App Libraries to the bottom of build path. For solving, you need to follow

1. Right click your project, then select "Build Path" --> "Configure Build Path";
2. Select "Order and export"
3. Select "Web App Libraries", and click "Bottom" button, then the "Web App Libraries" will be on the bottom;

And to get this into the Gradle Eclipse plugin (so you don't need to do it manually every time): Why is Eclipse not attaching 3rd party libs source files to a WTP-faceted Gradle project?

Credit goes to @jasop

UPDATE:

I want to give you update that now I can download all javadocs and sources jar file. But I cannot copy them in sources folder. My successful try attempt to download javadocs and sources jar are given below:

build.gradle File is given below:

group 'com.waze'
version '1.0-SNAPSHOT'

apply plugin: 'java'
apply plugin: 'eclipse'

sourceCompatibility = 1.8

repositories {
    mavenCentral()
}

configurations {
    sources {
        description = 'sources download'
        transitive = true
    }
    copysource {
        extendsFrom sources
    }
}

eclipse {
    classpath {
       downloadSources = true
       downloadJavadoc = true
    }
}

dependencies {
    compile group: 'org.glassfish.jersey.media', name: 'jersey-media-moxy', version: '2.22.2'
    sources group: 'org.glassfish.jersey.media', name: 'jersey-media-moxy', version: '2.22.2', classifier: 'javadoc'
    sources group: 'org.glassfish.jersey.media', name: 'jersey-media-moxy', version: '2.22.2', classifier: 'sources'
}

task copySources(type: Copy) {
    println 'Copying dependencies to sources directory'
    into "sources/"
    from configurations.copysource
}

task run (dependsOn: ['copySources']){
    println 'Downloading JARs'
}

run << {
    println 'Downloads complete. Finished.'
}

Output in command prompt: which downloading javadocs and sources jar file

Microsoft Windows [Version 6.1.7600]
Copyright (c) 2009 Microsoft Corporation.  All rights reserved.

C:\Users\PCPC>F:

F:\>cd F:\eclipse\workspace\log4j_sift-master
F:\eclipse\workspace\log4j_sift-master>gradle cleanEclipse eclipse
Copying dependencies to sources directory
Downloading JARs
:cleanEclipseClasspath
:cleanEclipseJdt
:cleanEclipseProject
:cleanEclipse
:eclipseClasspath
Download https://repo1.maven.org/maven2/org/glassfish/jersey/core/jersey-common/
2.22.2/jersey-common-2.22.2-sources.jar
Download https://repo1.maven.org/maven2/org/glassfish/jersey/core/jersey-common/
2.22.2/jersey-common-2.22.2-javadoc.jar
Download https://repo1.maven.org/maven2/org/glassfish/jersey/ext/jersey-entity-f
iltering/2.22.2/jersey-entity-filtering-2.22.2-sources.jar
Download https://repo1.maven.org/maven2/org/glassfish/jersey/ext/jersey-entity-f
iltering/2.22.2/jersey-entity-filtering-2.22.2-javadoc.jar
Download https://repo1.maven.org/maven2/org/eclipse/persistence/org.eclipse.pers
istence.moxy/2.6.0/org.eclipse.persistence.moxy-2.6.0-sources.jar
Download https://repo1.maven.org/maven2/javax/ws/rs/javax.ws.rs-api/2.0.1/javax.
ws.rs-api-2.0.1-sources.jar
Download https://repo1.maven.org/maven2/javax/ws/rs/javax.ws.rs-api/2.0.1/javax.
ws.rs-api-2.0.1-javadoc.jar
Download https://repo1.maven.org/maven2/javax/annotation/javax.annotation-api/1.
2/javax.annotation-api-1.2-sources.jar
Download https://repo1.maven.org/maven2/javax/annotation/javax.annotation-api/1.
2/javax.annotation-api-1.2-javadoc.jar
Download https://repo1.maven.org/maven2/org/glassfish/jersey/bundles/repackaged/
jersey-guava/2.22.2/jersey-guava-2.22.2-sources.jar
Download https://repo1.maven.org/maven2/org/glassfish/hk2/hk2-api/2.4.0-b34/hk2-
api-2.4.0-b34-sources.jar
Download https://repo1.maven.org/maven2/org/glassfish/hk2/hk2-api/2.4.0-b34/hk2-
api-2.4.0-b34-javadoc.jar
Download https://repo1.maven.org/maven2/org/glassfish/hk2/external/javax.inject/
2.4.0-b34/javax.inject-2.4.0-b34-sources.jar
Download https://repo1.maven.org/maven2/org/glassfish/hk2/external/javax.inject/
2.4.0-b34/javax.inject-2.4.0-b34-javadoc.jar
Download https://repo1.maven.org/maven2/org/glassfish/hk2/hk2-locator/2.4.0-b34/
hk2-locator-2.4.0-b34-sources.jar
Download https://repo1.maven.org/maven2/org/glassfish/hk2/hk2-locator/2.4.0-b34/
hk2-locator-2.4.0-b34-javadoc.jar
Download https://repo1.maven.org/maven2/org/glassfish/hk2/osgi-resource-locator/
1.0.1/osgi-resource-locator-1.0.1-sources.jar
Download https://repo1.maven.org/maven2/org/glassfish/hk2/osgi-resource-locator/
1.0.1/osgi-resource-locator-1.0.1-javadoc.jar
Download https://repo1.maven.org/maven2/org/eclipse/persistence/org.eclipse.pers
istence.core/2.6.0/org.eclipse.persistence.core-2.6.0-sources.jar
Download https://repo1.maven.org/maven2/javax/validation/validation-api/1.1.0.Fi
nal/validation-api-1.1.0.Final-sources.jar
Download https://repo1.maven.org/maven2/javax/validation/validation-api/1.1.0.Fi
nal/validation-api-1.1.0.Final-javadoc.jar
Download https://repo1.maven.org/maven2/org/glassfish/javax.json/1.0.4/javax.jso
n-1.0.4-sources.jar
Download https://repo1.maven.org/maven2/org/glassfish/javax.json/1.0.4/javax.jso
n-1.0.4-javadoc.jar
Download https://repo1.maven.org/maven2/org/glassfish/hk2/hk2-utils/2.4.0-b34/hk
2-utils-2.4.0-b34-sources.jar
Download https://repo1.maven.org/maven2/org/glassfish/hk2/hk2-utils/2.4.0-b34/hk
2-utils-2.4.0-b34-javadoc.jar
Download https://repo1.maven.org/maven2/org/glassfish/hk2/external/aopalliance-r
epackaged/2.4.0-b34/aopalliance-repackaged-2.4.0-b34-sources.jar
Download https://repo1.maven.org/maven2/org/glassfish/hk2/external/aopalliance-r
epackaged/2.4.0-b34/aopalliance-repackaged-2.4.0-b34-javadoc.jar
Download https://repo1.maven.org/maven2/org/javassist/javassist/3.18.1-GA/javass
ist-3.18.1-GA-sources.jar
Download https://repo1.maven.org/maven2/org/javassist/javassist/3.18.1-GA/javass
ist-3.18.1-GA-javadoc.jar
Download https://repo1.maven.org/maven2/org/eclipse/persistence/org.eclipse.pers
istence.asm/2.6.0/org.eclipse.persistence.asm-2.6.0-sources.jar
Download https://repo1.maven.org/maven2/javax/inject/javax.inject/1/javax.inject
-1-sources.jar
Download https://repo1.maven.org/maven2/javax/inject/javax.inject/1/javax.inject
-1-javadoc.jar
:eclipseJdt
:eclipseProject
:eclipse

BUILD SUCCESSFUL

Total time: 7 mins 5.896 secs
F:\eclipse\workspace\log4j_sift-master>