Remove Gradle 7 support

See gh-95

.github/workflows/build.yml

@@ -20,14 +20,10 @@ jobs:
         uses: ./.github/actions/run-gradle
       - name: Upload to Codecov.io
         uses: codecov/codecov-action@v3
-      - name: Functional Tests (Gradle 8)
+      - name: Functional Tests
         uses: ./.github/actions/run-gradle
         with:
           arguments: functionalTest --parallel
-      - name: Functional Tests (Gradle 7)
-        uses: ./.github/actions/run-gradle
-        with:
-          arguments: functionalTest --parallel -Dgradle7=true
 
   Windows:
     runs-on: windows-latest
@@ -38,14 +34,10 @@ jobs:
           fetch-depth: 1
       - name: Main Build
         uses: ./.github/actions/run-gradle
-      - name: Functional Tests (Gradle 8)
+      - name: Functional Tests
         uses: ./.github/actions/run-gradle
         with:
           arguments: functionalTest --parallel
-      - name: Functional Tests (Gradle 7)
-        uses: ./.github/actions/run-gradle
-        with:
-          arguments: functionalTest --parallel -Dgradle7=true
 
   macOS:
     runs-on: macos-latest
@@ -56,14 +48,10 @@ jobs:
           fetch-depth: 1
       - name: Main Build
         uses: ./.github/actions/run-gradle
-      - name: Functional Tests (Gradle 8)
+      - name: Functional Tests
         uses: ./.github/actions/run-gradle
         with:
           arguments: functionalTest --parallel
-      - name: Functional Tests (Gradle 7)
-        uses: ./.github/actions/run-gradle
-        with:
-          arguments: functionalTest --parallel -Dgradle7=true
 
   publish_snapshot_artifacts:
     name: Publish Snapshot Artifacts

cxf-codegen-gradle/build.gradle.kts

@@ -56,7 +56,6 @@ testing {
                     testLogging {
                         exceptionFormat = org.gradle.api.tasks.testing.logging.TestExceptionFormat.FULL
                     }
-                    systemProperty("gradle7", System.getProperty("gradle7", false.toString()))
                 }
             }
         }

cxf-codegen-gradle/src/functionalTest/java/io/mateo/cxf/codegen/ConfigurationCacheFunctionalTests.java

@@ -28,8 +28,8 @@
 class ConfigurationCacheFunctionalTests {
 
 	@RegisterExtension
-	static GradleCompatibilityExtension gradleCompatibilityExtension = new GradleCompatibilityExtension("7.3.3",
-			"7.4.2", "7.5.1", "7.6", "8.2.1", "8.3", "current");
+	static GradleCompatibilityExtension gradleCompatibilityExtension = new GradleCompatibilityExtension("8.2.1", "8.3",
+			"current");
 
 	@TestTemplate
 	void configurationCacheCompatibility(GradleBuild gradleBuild) {

cxf-codegen-gradle/src/functionalTest/java/io/mateo/junit/GradleCompatibilityExtension.java

@@ -36,29 +36,20 @@
  */
 public final class GradleCompatibilityExtension implements TestTemplateInvocationContextProvider {
 
-	private static final List<String> GRADLE_7_VERSIONS = List.of("7.3.3", "7.4.2", "7.5.1", "7.6.1");
-
 	private static final List<String> GRADLE_8_VERSIONS = List.of("8.0.2", "8.1.1", "8.2.1", "8.3", "current");
 
 	private static final List<String> DEFAULT_GRADLE_VERSIONS;
 
 	static {
-		List<String> defaultVersions = new ArrayList<>(GRADLE_7_VERSIONS.size() + GRADLE_8_VERSIONS.size());
-		defaultVersions.addAll(GRADLE_7_VERSIONS);
+		List<String> defaultVersions = new ArrayList<>(GRADLE_8_VERSIONS.size());
 		defaultVersions.addAll(GRADLE_8_VERSIONS);
 		DEFAULT_GRADLE_VERSIONS = List.copyOf(defaultVersions);
 	}
 
 	private final List<String> gradleVersions;
 
 	public GradleCompatibilityExtension() {
-		// Attempt to reduce amount of work done in CI.
-		if (Boolean.parseBoolean(System.getProperty("gradle7"))) {
-			this.gradleVersions = GRADLE_7_VERSIONS;
-		}
-		else {
-			this.gradleVersions = GRADLE_8_VERSIONS;
-		}
+		this.gradleVersions = GRADLE_8_VERSIONS;
 		System.err.println("Testing against the following Gradle versions " + this.gradleVersions);
 		Assertions.assertTrue(DEFAULT_GRADLE_VERSIONS.containsAll(this.gradleVersions),
 				"GradleCompatibilityExtension version defaults mismatch");

cxf-codegen-gradle/src/main/java/io/mateo/cxf/codegen/CxfCodegenPlugin.java

@@ -168,11 +168,6 @@ private NamedDomainObjectProvider<Configuration> createConfiguration(Project pro
 	}
 
 	private Provider<List<Dependency>> createDependencies(Project project, CxfCodegenExtension extension) {
-		// Avoid cast exception: FlatMapProvider to CollectionProviderInternal
-		if (GradleVersion.current().compareTo(GradleVersion.version("7.4")) < 0) {
-			String cxfVersion = extension.getCxfVersion().get();
-			return createDependenciesProvider(project, cxfVersion);
-		}
 		return extension.getCxfVersion().flatMap(cxfVersion -> createDependenciesProvider(project, cxfVersion));
 	}
 

documentation/src/docs/asciidoc/overview.adoc

@@ -52,16 +52,9 @@ include::../gradle/overview/plugin-application.gradle[]
 
 The CXF Codegen Gradle plugin supports the following Gradle versions:
 
-[cols="1,1"]
+[cols="1"]
 |===
-| Gradle 7 | Gradle 8
-
-a|
-
-- 7.3.3
-- 7.4.2
-- 7.5.1
-- 7.6.1
+| Gradle 8
 
 a|
 - 8.0.2