Attach documentation for Spring Data Commons for Spring Data project.

Closes #167

release-tools/src/main/java/org/springframework/data/release/model/DocumentationMetadata.java

@@ -29,7 +29,7 @@ public class DocumentationMetadata {
 
 	private static String DOCS_BASE = "https://docs.spring.io/spring-data/%s/docs/%s";
 	private static String DOCS = DOCS_BASE.concat("/reference/html/");
-	private static String JAVADOC = DOCS_BASE.concat("/api");
+	private static String JAVADOC = DOCS_BASE.concat("/api/");
 
 	Project project;
 	ArtifactVersion version;
@@ -41,9 +41,15 @@ public class DocumentationMetadata {
 	 */
 	public String getApiDocUrl(Train train) {
 
-		return version.isSnapshotVersion() || Projects.BUILD.equals(project) //
+		if (version.isSnapshotVersion()) {
-				? "" //
+			return "";
-				: String.format(JAVADOC, project.getName().toLowerCase(Locale.US), getVersion(train));
+		}
+
+		if (Projects.BUILD.equals(project)) { // Report Commons Docs for Spring Data Build
+			return String.format(JAVADOC, Projects.COMMONS.getName().toLowerCase(Locale.US), version.toString());
+		}
+
+		return String.format(JAVADOC, project.getName().toLowerCase(Locale.US), getVersion(train));
 	}
 
 	/**
@@ -53,9 +59,15 @@ public class DocumentationMetadata {
 	 */
 	public String getReferenceDocUrl(Train train) {
 
-		return version.isSnapshotVersion() || Projects.BUILD.equals(project) //
+		if (version.isSnapshotVersion()) {
-				? "" //
+			return "";
-				: String.format(DOCS, project.getName().toLowerCase(Locale.US), getVersion(train));
+		}
+
+		if (Projects.BUILD.equals(project)) { // Report Commons Docs for Spring Data Build
+			return String.format(DOCS, Projects.COMMONS.getName().toLowerCase(Locale.US), version.toString());
+		}
+
+		return String.format(DOCS, project.getName().toLowerCase(Locale.US), getVersion(train));
 	}
 
 	public String getVersion(Train train) {

release-tools/src/main/java/org/springframework/data/release/sagan/DefaultSaganClient.java

@@ -27,6 +27,7 @@ import java.util.List;
 import java.util.stream.Collectors;
 
 import org.springframework.data.release.model.Project;
+import org.springframework.data.release.model.Projects;
 import org.springframework.data.release.utils.Logger;
 import org.springframework.web.client.RestOperations;
 
@@ -82,6 +83,10 @@ class DefaultSaganClient implements SaganClient {
 	@Override
 	public void updateProjectMetadata(Project project, MaintainedVersions versions) {
 
+		if (project != Projects.BUILD) {
+			return;
+		}
+
 		URI resource = properties.getProjectReleasesResource(project);
 
 		String versionsString = versions.stream()//

release-tools/src/test/java/org/springframework/data/release/model/DocumentationMetadataUnitTests.java

@@ -0,0 +1,50 @@
+/*
+ * Copyright 2021 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.data.release.model;
+
+import static org.assertj.core.api.Assertions.*;
+
+import org.junit.jupiter.api.Test;
+
+/**
+ * Unit tests for {@link DocumentationMetadata}.
+ *
+ * @author Mark Paluch
+ */
+class DocumentationMetadataUnitTests {
+
+	@Test // gh-167
+	void shouldReportCorrectDocumentationUrls() {
+
+		DocumentationMetadata metadata = DocumentationMetadata.of(Projects.MONGO_DB, ArtifactVersion.of("3.1.0"));
+
+		assertThat(metadata.getApiDocUrl(ReleaseTrains.OCKHAM))
+				.isEqualTo("https://docs.spring.io/spring-data/mongodb/docs/3.1.0/api/");
+		assertThat(metadata.getReferenceDocUrl(ReleaseTrains.OCKHAM))
+				.isEqualTo("https://docs.spring.io/spring-data/mongodb/docs/3.1.0/reference/html/");
+	}
+
+	@Test // gh-167
+	void shouldReportCorrectCommonsDocumentationUrlsForBuildProject() {
+
+		DocumentationMetadata metadata = DocumentationMetadata.of(Projects.BUILD, ArtifactVersion.of("3.1.0"));
+
+		assertThat(metadata.getApiDocUrl(ReleaseTrains.OCKHAM))
+				.isEqualTo("https://docs.spring.io/spring-data/commons/docs/3.1.0/api/");
+		assertThat(metadata.getReferenceDocUrl(ReleaseTrains.OCKHAM))
+				.isEqualTo("https://docs.spring.io/spring-data/commons/docs/3.1.0/reference/html/");
+	}
+}