Support annotationProcessor scope

Fixes gh-653

initializr-generator/src/main/java/io/spring/initializr/generator/ProjectGenerator.java

@@ -404,6 +404,8 @@ public class ProjectGenerator {
 				filterDependencies(dependencies, Dependency.SCOPE_RUNTIME));
 		model.put("compileOnlyDependencies",
 				filterDependencies(dependencies, Dependency.SCOPE_COMPILE_ONLY));
+		model.put("annotationProcessorDependencies",
+				filterDependencies(dependencies, Dependency.SCOPE_ANNOTATION_PROCESSOR));
 		model.put("providedDependencies",
 				filterDependencies(dependencies, Dependency.SCOPE_PROVIDED));
 		model.put("testDependencies",

initializr-generator/src/main/java/io/spring/initializr/metadata/Dependency.java

@@ -50,6 +50,11 @@ public class Dependency extends MetadataElement implements Describable {
 	 */
 	public static final String SCOPE_COMPILE_ONLY = "compileOnly";
 
+	/**
+	 * Annotation Processor Scope.
+	 */
+	public static final String SCOPE_ANNOTATION_PROCESSOR = "annotationProcessor";
+
 	/**
 	 * Runtime Scope.
 	 */
@@ -68,9 +73,9 @@ public class Dependency extends MetadataElement implements Describable {
 	/**
 	 * All scope types.
 	 */
-	public static final List<String> SCOPE_ALL = Collections
-			.unmodifiableList(Arrays.asList(SCOPE_COMPILE, SCOPE_RUNTIME,
-					SCOPE_COMPILE_ONLY, SCOPE_PROVIDED, SCOPE_TEST));
+	public static final List<String> SCOPE_ALL = Collections.unmodifiableList(
+			Arrays.asList(SCOPE_COMPILE, SCOPE_RUNTIME, SCOPE_COMPILE_ONLY,
+					SCOPE_ANNOTATION_PROCESSOR, SCOPE_PROVIDED, SCOPE_TEST));
 
 	private List<String> aliases = new ArrayList<>();
 

initializr-generator/src/main/resources/templates/starter-build.gradle

@@ -98,6 +98,9 @@ dependencies {
 	{{#compileOnlyDependencies}}
 	compileOnly('{{groupId}}:{{artifactId}}{{#version}}:{{version}}{{/version}}{{#type}}@{{type}}{{/type}}')
 	{{/compileOnlyDependencies}}
+	{{#annotationProcessorDependencies}}
+	annotationProcessor('{{groupId}}:{{artifactId}}{{#version}}:{{version}}{{/version}}{{#type}}@{{type}}{{/type}}')
+	{{/annotationProcessorDependencies}}
 	{{#providedDependencies}}
 	providedRuntime('{{groupId}}:{{artifactId}}{{#version}}:{{version}}{{/version}}{{#type}}@{{type}}{{/type}}')
 	{{/providedDependencies}}

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

@@ -89,6 +89,19 @@
 			{{/type}}
 		</dependency>
 		{{/compileOnlyDependencies}}
+		{{#annotationProcessorDependencies}}
+		<dependency>
+			<groupId>{{groupId}}</groupId>
+			<artifactId>{{artifactId}}</artifactId>
+			{{#version}}
+			<version>{{version}}</version>
+			{{/version}}
+			<optional>true</optional>
+			{{#type}}
+			<type>{{type}}</type>
+			{{/type}}
+		</dependency>
+		{{/annotationProcessorDependencies}}
 		{{#providedDependencies}}
 		<dependency>
 			<groupId>{{groupId}}</groupId>

initializr-generator/src/test/java/io/spring/initializr/generator/ProjectGeneratorBuildTests.java

@@ -143,6 +143,24 @@ public class ProjectGeneratorBuildTests extends AbstractProjectGeneratorTests {
 				+ this.build + "/compile-only-dependency-" + this.assertFileName));
 	}
 
+	@Test
+	public void annotationProcessorDependency() {
+		Dependency annotationProcessor = Dependency.withId("configuration-processor",
+				"org.springframework.boot", "spring-boot-configuration-processor");
+		annotationProcessor.setScope(Dependency.SCOPE_ANNOTATION_PROCESSOR);
+		InitializrMetadata metadata = InitializrMetadataTestBuilder.withDefaults()
+				.addDependencyGroup("core", "web", "data-jpa")
+				.addDependencyGroup("configuration-processor", annotationProcessor)
+				.build();
+		applyMetadata(metadata);
+		ProjectRequest request = createProjectRequest("configuration-processor", "web",
+				"data-jpa");
+		ProjectAssert project = generateProject(request);
+		project.sourceCodeAssert(this.fileName)
+				.equalsTo(new ClassPathResource("project/" + this.build
+						+ "/annotation-processor-dependency-" + this.assertFileName));
+	}
+
 	@Test
 	public void bomWithOrdering() {
 		Dependency foo = Dependency.withId("foo", "org.acme", "foo");

initializr-generator/src/test/resources/project/gradle/annotation-processor-dependency-build.gradle.gen

@@ -0,0 +1,33 @@
+buildscript {
+	ext {
+		springBootVersion = '1.2.3.RELEASE'
+	}
+	repositories {
+		mavenCentral()
+	}
+	dependencies {
+		classpath("org.springframework.boot:spring-boot-gradle-plugin:${springBootVersion}")
+		classpath('io.spring.gradle:dependency-management-plugin:0.5.1.RELEASE')
+	}
+}
+
+apply plugin: 'java'
+apply plugin: 'eclipse'
+apply plugin: 'spring-boot'
+apply plugin: 'io.spring.dependency-management'
+
+group = 'com.example'
+version = '0.0.1-SNAPSHOT'
+sourceCompatibility = 1.8
+
+repositories {
+	mavenCentral()
+}
+
+
+dependencies {
+	compile('org.springframework.boot:spring-boot-starter-data-jpa')
+	compile('org.springframework.boot:spring-boot-starter-web')
+	annotationProcessor('org.springframework.boot:spring-boot-configuration-processor')
+	testCompile('org.springframework.boot:spring-boot-starter-test')
+}

initializr-generator/src/test/resources/project/maven/annotation-processor-dependency-pom.xml.gen

@@ -0,0 +1,59 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+
+	<groupId>com.example</groupId>
+	<artifactId>demo</artifactId>
+	<version>0.0.1-SNAPSHOT</version>
+	<packaging>jar</packaging>
+
+	<name>demo</name>
+	<description>Demo project for Spring Boot</description>
+
+	<parent>
+		<groupId>org.springframework.boot</groupId>
+		<artifactId>spring-boot-starter-parent</artifactId>
+		<version>1.2.3.RELEASE</version>
+		<relativePath/> <!-- lookup parent from repository -->
+	</parent>
+
+	<properties>
+		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
+		<java.version>1.8</java.version>
+	</properties>
+
+	<dependencies>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-data-jpa</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-web</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-configuration-processor</artifactId>
+			<optional>true</optional>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-test</artifactId>
+			<scope>test</scope>
+		</dependency>
+	</dependencies>
+
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.springframework.boot</groupId>
+				<artifactId>spring-boot-maven-plugin</artifactId>
+			</plugin>
+		</plugins>
+	</build>
+
+
+</project>