Generate -sources and -javadoc jars

Each spring-* subproject now has sourcesJar and javadocJar tasks

 - Ignore subproject overview.html files for now (not all have one)
 - Ensure @author attribution occurs
 - Javadoc 'header' is project description

spring-asm is a special case

 - source jar is created, but empty (to comply with entry rules for
   Maven Central)

 - add package-info.java explaining the nature of spring-asm
   this is nice, because it shows up in the public API docs now.

 - add SpringAsmInfo in the org.springframework.asm package as a
   placeholder allowing the generation of javadocs (see link to bug)

 - add explicit 'repackageAsm' Gradle task allowing for easy testing
   and merging of jar containing bundlor manifest as well as jar
   containing repackaged ASM classes.

build.gradle

@@ -53,21 +53,70 @@ configure(subprojects) {
             expand(copyright: new Date().format('yyyy'), version: project.version)
         }
     }
-}
 
-configure(subprojects - project(":spring-asm")) {
+    javadoc {
+        options.memberLevel = org.gradle.external.javadoc.JavadocMemberLevel.PROTECTED
+        options.author = true
+        options.header = project.name
+        //options.overview = "${projectDir}/src/main/java/overview.html"
+    }
 
     task sourcesJar(type: Jar, dependsOn:classes) {
         classifier = 'sources'
-        from sourceSets.main.allSource
+        from sourceSets.main.allJava
+    }
+
+    task javadocJar(type: Jar) {
+        classifier = 'javadoc'
+        from javadoc
     }
 
     artifacts {
         archives sourcesJar
+        archives javadocJar
     }
 }
 
 
+project("spring-asm") {
+    description = 'Spring ASM'
+    asmVersion = '2.2.3'
+
+    configurations {
+        asm
+        jarjar
+    }
+    dependencies {
+        asm "asm:asm:${asmVersion}@jar", "asm:asm-commons:${asmVersion}@jar"
+        jarjar 'com.googlecode.jarjar:jarjar:1.1'
+    }
+
+    task repackageAsm(type: Jar) { jar ->
+        jar.baseName = "asm-repack"
+        jar.version = asmVersion
+
+        doLast() {
+            project.ant {
+                taskdef name: "jarjar", classname: "com.tonicsystems.jarjar.JarJarTask",
+                    classpath: configurations.jarjar.asPath
+                jarjar(destfile: archivePath, index: "true", filesetmanifest: "merge") {
+                    configurations.asm.each { jarfile ->
+                        zipfileset(src: jarfile)
+                    }
+                    rule(pattern: 'org.objectweb.asm.**', result: 'org.springframework.asm.@1')
+                }
+            }
+        }
+    }
+
+    jar {
+        dependsOn repackageAsm
+        from(zipTree(repackageAsm.archivePath)) {
+            exclude 'META-INF/INDEX.LIST'
+        }
+    }
+}
+
 project('spring-core') {
     description = 'Spring Core'
     dependencies {
@@ -374,8 +423,8 @@ project('spring-struts') {
 project('spring-aspects') {
     description = 'Spring Aspects'
     apply from: 'aspectJ.gradle'
-    compileJava.dependsOn project(":spring-orm").jar
     dependencies {
+        compile project(":spring-orm")
         aspects project(":spring-orm")
         ajc "org.aspectj:aspectjtools:1.6.8"
         compile "org.aspectj:aspectjrt:1.6.8"

org.springframework.asm/src/main/java/org/springframework/asm/SpringAsmInfo.java

@@ -0,0 +1,31 @@
+/*
+ * Copyright 2002-2012 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.asm;
+
+/**
+ * Placeholder to allow Javadoc generation. Required because
+ * <a href="http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4492654">this bug</a>
+ * does not allow the generation of Javadoc for packages having only a
+ * {@code package-info.java} file.
+ * <p>See <a href="package-summary.html">package-level Javadoc</a> for more
+ * information on {@code org.springframework.asm}.
+ *
+ * @author Chris Beams
+ * @since 3.2
+ */
+public final class SpringAsmInfo {
+}

org.springframework.asm/src/main/java/org/springframework/asm/package-info.java

@@ -0,0 +1,11 @@
+/**
+ * Spring's repackaging of {@code org.objectweb.asm.*} (for internal use only).
+ * <p>This repackaging technique avoids any potential conflicts with
+ * dependencies on ASM at the application level or from other third-party
+ * libraries and frameworks.
+ * <p>As this repackaging happens at the classfile level, sources and Javadoc
+ * are not available here. See the original ObjectWeb
+ * <a href="http://asm.ow2.org/asm223/javadoc/user">ASM 2.2.3 Javadoc</a>
+ * for details when working with these classes.
+ */
+package org.springframework.asm;

org.springframework.aspects/src/main/java/overview.html

@@ -1,7 +1,7 @@
 <html>
 <body>
 <p>
-The Spring Data Binding framework, an internal library used by Spring Web Flow.
+Spring's AspectJ-based aspects.
 </p>
 </body>
-</html>
+</html>

org.springframework.instrument.tomcat/src/main/java/overview.html

@@ -1,7 +1,7 @@
 <html>
 <body>
 <p>
-The Spring Data Binding framework, an internal library used by Spring Web Flow.
+Spring's instrumentation agent for Tomcat.
 </p>
 </body>
-</html>
+</html>

org.springframework.test/src/main/java/overview.html

@@ -1,7 +1,7 @@
 <html>
 <body>
 <p>
-Spring's test context framework. Also includes common Servlet and Portlet API mocks.
+Spring's TestContext framework. Also includes common Servlet and Portlet API mocks.
 </p>
 </body>
-</html>
+</html>

org.springframework.web.servlet/src/main/java/overview.html

@@ -1,7 +1,7 @@
 <html>
 <body>
 <p>
-Spring's MVC framework in its Servlet API version. Includes support for common view technologies. 
+Spring's MVC framework in its Servlet API version. Includes support for common view technologies.
 </p>
 </body>
-</html>
+</html>

src/api/overview.html

@@ -1,5 +1,7 @@
 <html>
-    <body>
-        This is the public API documentation for the <a href="http://github.com/SpringSource/spring-framework" target="_top">Spring Framework</a>.
-    </body>
+<body>
+<p>
+This is the public API documentation for the <a href="http://github.com/SpringSource/spring-framework" target="_top">Spring Framework</a>.
+</p>
+</body>
 </html>