Revert GMavenPlus migration

GMavenPlus is not properly supported on Eclipse so a Groovy-based
project using Maven now breaks in that IDE. Let's revert the support
until we find a better solution.

CHANGELOG.adoc

@@ -8,7 +8,6 @@ order.
 === Release 1.0.0 (In progress)
 
 * https://github.com/spring-io/initializr/issues/114[#114]: clean package name if necessary
-* https://github.com/spring-io/initializr/issues/90[#90]: migrate Groovy maven-based builds to GMavenPlus
 * https://github.com/spring-io/initializr/issues/140[#140]: expose dependencies meta-data
 * https://github.com/spring-io/initializr/issues/168[#168]: support for dependency versions mapping
 * https://github.com/spring-io/initializr/issues/165[#165]: improve resources caching

initializr/pom.xml

@@ -152,29 +152,30 @@
 	</dependencyManagement>
 
 	<build>
+		<sourceDirectory>src/main/groovy</sourceDirectory>
+		<testSourceDirectory>src/test/groovy</testSourceDirectory>
 		<plugins>
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-compiler-plugin</artifactId>
 				<version>3.1</version>
 				<configuration>
+					<compilerId>groovy-eclipse-compiler</compilerId>
 					<source>${java.version}</source>
 					<target>${java.version}</target>
 				</configuration>
-			</plugin>
+				<dependencies>
-			<plugin>
+					<dependency>
-				<groupId>org.codehaus.gmavenplus</groupId>
+						<groupId>org.codehaus.groovy</groupId>
-				<artifactId>gmavenplus-plugin</artifactId>
+						<artifactId>groovy-eclipse-compiler</artifactId>
-				<executions>
+						<version>2.9.1-01</version>
-					<execution>
+					</dependency>
-						<goals>
+					<dependency>
-							<goal>addSources</goal>
+						<groupId>org.codehaus.groovy</groupId>
-							<goal>addTestSources</goal>
+						<artifactId>groovy-eclipse-batch</artifactId>
-							<goal>compile</goal>
+						<version>2.3.7-01</version>
-							<goal>testCompile</goal>
+					</dependency>
-						</goals>
+				</dependencies>
-					</execution>
-				</executions>
 			</plugin>
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
@@ -189,6 +190,12 @@
 					</excludes>
 				</configuration>
 			</plugin>
+			<plugin>
+				<groupId>org.codehaus.groovy</groupId>
+				<artifactId>groovy-eclipse-compiler</artifactId>
+				<version>2.9.1-01</version>
+				<extensions>true</extensions>
+			</plugin>
 		</plugins>
 		<pluginManagement>
 			<plugins>
@@ -197,11 +204,6 @@
 					<artifactId>maven-surefire-plugin</artifactId>
 					<version>2.16</version>
 				</plugin>
-				<plugin>
-					<groupId>org.codehaus.gmavenplus</groupId>
-					<artifactId>gmavenplus-plugin</artifactId>
-					<version>1.5</version>
-				</plugin>
 			</plugins>
 		</pluginManagement>
 	</build>

initializr/src/main/groovy/io/spring/initializr/generator/ProjectGenerator.groovy

@@ -102,7 +102,7 @@ class ProjectGenerator {
 		def applicationName = request.applicationName
 		def language = request.language
 
-		String codeLocation = language.equals("groovy") ? 'groovy': 'java'
+		String codeLocation = ((language.equals("groovy") && gradleBuild) ? 'groovy': 'java')
 		def src = new File(new File(dir, "src/main/$codeLocation"), request.packageName.replace('.', '/'))
 		src.mkdirs()
 		write(new File(src, "${applicationName}.${language}"), "Application.$language", model)

initializr/src/main/resources/templates/starter-pom.xml

@@ -78,23 +78,28 @@
 				<artifactId>spring-boot-maven-plugin</artifactId>
 			</plugin><% if (language=='groovy') { %>
 			<plugin>
-				<groupId>org.codehaus.gmavenplus</groupId>
+				<artifactId>maven-compiler-plugin</artifactId>
-				<artifactId>gmavenplus-plugin</artifactId>
+				<configuration>
-				<version>1.5</version>
+				<compilerId>groovy-eclipse-compiler</compilerId>
-				<executions>
+				</configuration>
-					<execution>
+				<dependencies>
-						<goals>
+				<dependency>
-							<goal>addSources</goal>
+					<groupId>org.codehaus.groovy</groupId>
-							<goal>addTestSources</goal>
+					<artifactId>groovy-eclipse-compiler</artifactId>
-							<goal>generateStubs</goal>
+					<version>2.9.1-01</version>
-							<goal>compile</goal>
+				</dependency>
-							<goal>testGenerateStubs</goal>
+				<dependency>
-							<goal>testCompile</goal>
+					<groupId>org.codehaus.groovy</groupId>
-							<goal>removeStubs</goal>
+					<artifactId>groovy-eclipse-batch</artifactId>
-							<goal>removeTestStubs</goal>
+					<version>2.3.7-01</version>
-						</goals>
+				</dependency>
-					</execution>
+				</dependencies>
-				</executions>
+			</plugin>
+			<plugin>
+				<groupId>org.codehaus.groovy</groupId>
+				<artifactId>groovy-eclipse-compiler</artifactId>
+				<version>2.9.1-01</version>
+				<extensions>true</extensions>
 			</plugin><% } %>
 		</plugins>
 	</build>

initializr/src/test/groovy/io/spring/initializr/generator/ProjectGeneratorTests.groovy

@@ -217,7 +217,7 @@ class ProjectGeneratorTests {
 		request.bootVersion = '1.1.9.RELEASE'
 		request.name = 'MyDemo'
 		request.packageName = 'foo'
-		generateProject(request).sourceCodeAssert('src/main/groovy/foo/MyDemoApplication.groovy')
+		generateProject(request).sourceCodeAssert('src/main/java/foo/MyDemoApplication.groovy')
 				.hasImports(EnableAutoConfiguration.class.name, ComponentScan.class.name, Configuration.class.name)
 				.doesNotHaveImports(SpringBootApplication.class.name)
 				.contains('@EnableAutoConfiguration', '@Configuration', '@ComponentScan')
@@ -231,7 +231,7 @@ class ProjectGeneratorTests {
 		request.bootVersion = '1.2.0.RC1'
 		request.name = 'MyDemo'
 		request.packageName = 'foo'
-		generateProject(request).sourceCodeAssert('src/main/groovy/foo/MyDemoApplication.groovy')
+		generateProject(request).sourceCodeAssert('src/main/java/foo/MyDemoApplication.groovy')
 				.hasImports(SpringBootApplication.class.name)
 				.doesNotHaveImports(EnableAutoConfiguration.class.name, ComponentScan.class.name, Configuration.class.name)
 				.contains('@SpringBootApplication')
@@ -257,7 +257,7 @@ class ProjectGeneratorTests {
 	}
 
 	@Test
-	void groovyWithMavenUsesGroovyDir() {
+	void groovyWithMavenUsesJavaDir() {
 		def request = createProjectRequest('web')
 		request.type = 'maven-project'
 		request.language = 'groovy'

initializr/src/test/groovy/io/spring/initializr/test/ProjectAssert.groovy

@@ -109,9 +109,10 @@ class ProjectAssert {
 	}
 
 	ProjectAssert isGroovyProject(String expectedPackageName, String expectedApplicationName) {
+		String codeLocation = (mavenProject ? 'java' : 'groovy')
 		String packageName = expectedPackageName.replace('.', '/')
-		hasFile("src/main/groovy/$packageName/${expectedApplicationName}.groovy",
+		hasFile("src/main/$codeLocation/$packageName/${expectedApplicationName}.groovy",
-				"src/test/groovy/$packageName/${expectedApplicationName}Tests.groovy",
+				"src/test/$codeLocation/$packageName/${expectedApplicationName}Tests.groovy",
 				'src/main/resources/application.properties')
 	}