Remove GraphQL web starters

The GraphQL Spring Boot starters aren't actually necessary.
The typical GraphQL usage is really tied to the type of web application
you're building: Spring MVC or WebFlux.

Adding the `spring-graphql-web` dependency to the classpath is a signal
strong enough that we can configure additional endpoints into the web
application.

Closes gh-17

build.gradle

@@ -1,47 +1,11 @@
-import org.springframework.boot.gradle.plugin.SpringBootPlugin
-
-plugins {
-	id 'org.springframework.boot' version '2.4.0-SNAPSHOT' apply false
-}
 
 subprojects {
-	apply plugin: 'java-library'
-	apply plugin: 'io.spring.dependency-management'
-	apply plugin: 'maven'
-
 	group = 'org.springframework.experimental'
 	version = "0.1.0-SNAPSHOT"
-	sourceCompatibility = 1.8
-	targetCompatibility = 1.8
 
 	repositories {
 		mavenCentral()
 		maven { url 'https://repo.spring.io/milestone' }
 		maven { url 'https://repo.spring.io/snapshot' }
 	}
-
-	dependencyManagement {
-		imports {
-			mavenBom SpringBootPlugin.BOM_COORDINATES
-		}
-		dependencies {
-			dependency 'com.graphql-java:graphql-java:15.0'
-		}
-		generatedPomCustomization {
-			enabled = false
-		}
-	}
-
-	dependencies {
-		testImplementation 'org.springframework.boot:spring-boot-starter-test'
-	}
-
-	test {
-		useJUnitPlatform()
-		testLogging {
-			events "passed", "skipped", "failed"
-		}
-	}
-
-	apply from: "${rootDir}/gradle/publishing.gradle"
 }

settings.gradle

@@ -1,12 +1,17 @@
 pluginManagement {
-	repositories {
-		mavenCentral()
-		maven { url 'https://repo.spring.io/milestone' }
-		maven { url 'https://repo.spring.io/snapshot' }
-	}
+    repositories {
+        maven { url 'https://repo.spring.io/milestone' }
+        maven { url 'https://repo.spring.io/snapshot' }
+        gradlePluginPortal()
+    }
+    resolutionStrategy {
+        eachPlugin {
+            if (requested.id.id == 'org.springframework.boot') {
+                useModule("org.springframework.boot:spring-boot-gradle-plugin:${requested.version}")
+            }
+        }
+    }
 }
 
 rootProject.name = 'spring-graphql'
-include 'spring-boot-starter-graphql-web'
-include 'spring-boot-starter-graphql-webflux'
 include 'spring-graphql-web'

spring-boot-starter-graphql-web/build.gradle

@@ -1,7 +0,0 @@
-description = "Starter for building GraphQL Java applications with Spring MVC"
-
-dependencies {
-    api project(':spring-graphql-web')
-	api 'org.springframework.boot:spring-boot-starter'
-    api 'org.springframework.boot:spring-boot-starter-web'
-}

spring-boot-starter-graphql-webflux/build.gradle

@@ -1,7 +0,0 @@
-description = "Starter for building GraphQL Java applications with Spring WebFlux"
-
-dependencies {
-    api project(':spring-graphql-web')
-	api 'org.springframework.boot:spring-boot-starter'
-    api 'org.springframework.boot:spring-boot-starter-webflux'
-}

spring-boot-starter-graphql-webflux/src/main/resources/META-INF/spring.factories

@@ -1,2 +0,0 @@
-org.springframework.boot.autoconfigure.EnableAutoConfiguration=\
-org.springframework.boot.graphql.WebFluxGraphQLAutoConfiguration

spring-graphql-web/build.gradle

@@ -1,7 +1,30 @@
+import org.springframework.boot.gradle.plugin.SpringBootPlugin
+
+plugins {
+	id 'org.springframework.boot' version '2.4.0-SNAPSHOT' apply false
+	id 'io.spring.dependency-management' version '1.0.10.RELEASE'
+	id 'java-library'
+	id 'maven'
+}
+
 description = "GraphQL Java support with Spring Web frameworks"
+sourceCompatibility = 1.8
+targetCompatibility = 1.8
+
+dependencyManagement {
+	imports {
+		mavenBom SpringBootPlugin.BOM_COORDINATES
+	}
+	generatedPomCustomization {
+		enabled = false
+	}
+}
 
 dependencies {
-	api 'com.graphql-java:graphql-java'
+	api 'com.graphql-java:graphql-java:15.0'
+	// Reactor is required as it's part of the interception model
+	api 'io.projectreactor:reactor-core'
+	// auto-configurations should be moved to the spring-boot project
 	api 'org.springframework.boot:spring-boot-autoconfigure'
 
 	compileOnly 'org.springframework:spring-context'
@@ -20,4 +43,15 @@ dependencies {
 	testImplementation 'org.springframework:spring-webflux'
 	testImplementation 'org.springframework:spring-webmvc'
 	testImplementation 'javax.servlet:javax.servlet-api'
-}
+	testImplementation 'org.springframework.boot:spring-boot-actuator-autoconfigure'
+	testImplementation 'org.springframework.boot:spring-boot-starter-test'
+}
+
+test {
+	useJUnitPlatform()
+	testLogging {
+		events "passed", "skipped", "failed"
+	}
+}
+
+apply from: "${rootDir}/gradle/publishing.gradle"