Allow to override BOM's groupId/artifactId

Closes gh-723

initializr-docs/src/main/asciidoc/configuration-guide.adoc

@@ -445,6 +445,8 @@ initializr:
         artifactId: acme-foo-dependencies
         mappings:
           - versionRange: "[1.2.3.RELEASE,1.3.0.RELEASE)"
+            groupId: com.example.bar
+            artifactId: acme-foo-bom
             version: Arcturus.SR6
           - versionRange: "[1.3.0.RELEASE,1.4.0.RELEASE)"
             version: Botein.SR7
@@ -461,7 +463,8 @@ initializr:
 The primary use case here is to map Spring Boot versions to the preferred or supported
 versions of the Foo project. You can also see that for the milestone and snapshot BOMs,
 additional repositories are declared because those artifacts are not in the default
-repository.
+repository. Initially the BOM was identified as `com.example.bar:acme-foo-bom` and renamed
+as of `Botein` to `com.example.foo:acme-foo-dependencies`.
 
 TIP: We also use the `x` trick in version ranges to avoid updating the range every time
 a new Spring Boot 1.5 bug fix release is available

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

@@ -190,8 +190,11 @@ public class BillOfMaterials {
 
 		for (Mapping mapping : this.mappings) {
 			if (mapping.range.match(bootVersion)) {
-				BillOfMaterials resolvedBom = new BillOfMaterials(this.groupId,
-						this.artifactId, mapping.version);
+				BillOfMaterials resolvedBom = new BillOfMaterials(
+						(mapping.groupId != null) ? mapping.groupId : this.groupId,
+						(mapping.artifactId != null) ? mapping.artifactId
+								: this.artifactId,
+						mapping.version);
 				resolvedBom.setVersionProperty(this.versionProperty);
 				resolvedBom.setOrder(this.order);
 				resolvedBom.repositories.addAll(!mapping.repositories.isEmpty()
@@ -233,10 +236,21 @@ public class BillOfMaterials {
 	/**
 	 * Mapping information.
 	 */
+	@JsonInclude(JsonInclude.Include.NON_EMPTY)
 	public static class Mapping {
 
 		private String versionRange;
 
+		/**
+		 * The groupId to use for this mapping or {@code null} to use the default.
+		 */
+		private String groupId;
+
+		/**
+		 * The artifactId to use for this mapping or {@code null} to use the default.
+		 */
+		private String artifactId;
+
 		private String version;
 
 		private List<String> repositories = new ArrayList<>();
@@ -272,10 +286,34 @@ public class BillOfMaterials {
 			return this.versionRange;
 		}
 
+		public void setVersionRange(String versionRange) {
+			this.versionRange = versionRange;
+		}
+
+		public String getGroupId() {
+			return this.groupId;
+		}
+
+		public void setGroupId(String groupId) {
+			this.groupId = groupId;
+		}
+
+		public String getArtifactId() {
+			return this.artifactId;
+		}
+
+		public void setArtifactId(String artifactId) {
+			this.artifactId = artifactId;
+		}
+
 		public String getVersion() {
 			return this.version;
 		}
 
+		public void setVersion(String version) {
+			this.version = version;
+		}
+
 		public List<String> getRepositories() {
 			return this.repositories;
 		}
@@ -288,14 +326,6 @@ public class BillOfMaterials {
 			return this.range;
 		}
 
-		public void setVersionRange(String versionRange) {
-			this.versionRange = versionRange;
-		}
-
-		public void setVersion(String version) {
-			this.version = version;
-		}
-
 		public void setRepositories(List<String> repositories) {
 			this.repositories = repositories;
 		}
@@ -313,6 +343,9 @@ public class BillOfMaterials {
 			return "Mapping ["
 					+ ((this.versionRange != null)
 							? "versionRange=" + this.versionRange + ", " : "")
+					+ ((this.groupId != null) ? "groupId=" + this.groupId + ", " : "")
+					+ ((this.artifactId != null) ? "artifactId=" + this.artifactId + ", "
+							: "")
 					+ ((this.version != null) ? "version=" + this.version + ", " : "")
 					+ ((this.repositories != null)
 							? "repositories=" + this.repositories + ", " : "")

initializr-generator/src/test/java/io/spring/initializr/metadata/BillOfMaterialsTests.java

@@ -63,6 +63,29 @@ public class BillOfMaterialsTests {
 		assertThat(resolved.getAdditionalBoms().get(0)).isEqualTo("bom-main");
 	}
 
+	@Test
+	public void resolveSimpleRangeWithGroupIdArtifactId() {
+		BillOfMaterials bom = BillOfMaterials.create("com.example", "bom", "1.0.0");
+		bom.setVersionProperty("bom.version");
+		bom.getRepositories().add("repo-main");
+		bom.getAdditionalBoms().add("bom-main");
+		Mapping mapping = Mapping.create("[1.2.0.RELEASE,1.3.0.M1)", "1.1.0");
+		mapping.setGroupId("com.example.override");
+		mapping.setArtifactId("bom-override");
+		bom.getMappings().add(mapping);
+		bom.validate();
+		BillOfMaterials resolved = bom.resolve(Version.parse("1.2.3.RELEASE"));
+		assertThat(resolved.getGroupId()).isEqualTo("com.example.override");
+		assertThat(resolved.getArtifactId()).isEqualTo("bom-override");
+		assertThat(resolved.getVersion()).isEqualTo("1.1.0");
+		assertThat(resolved.getVersionProperty().toStandardFormat())
+				.isEqualTo("bom.version");
+		assertThat(resolved.getRepositories()).hasSize(1);
+		assertThat(resolved.getRepositories().get(0)).isEqualTo("repo-main");
+		assertThat(resolved.getAdditionalBoms()).hasSize(1);
+		assertThat(resolved.getAdditionalBoms().get(0)).isEqualTo("bom-main");
+	}
+
 	@Test
 	public void resolveRangeOverride() {
 		BillOfMaterials bom = BillOfMaterials.create("com.example", "bom", "1.0.0");

initializr-web/src/test/resources/metadata/config/test-default.json

@@ -106,7 +106,6 @@
             "repositories": [
               "my-api-repo-1"
             ],
-            "additionalBoms": [],
             "version": "1.0.0.RELEASE"
           },
           {
@@ -114,7 +113,6 @@
             "repositories": [
               "my-api-repo-2"
             ],
-            "additionalBoms": [],
             "version": "2.0.0.RELEASE"
           }
         ]