#35 - Added command to trigger builds.

release-tools/src/main/java/org/springframework/data/release/build/BuildCommands.java

@@ -21,12 +21,19 @@ import lombok.RequiredArgsConstructor;
 import lombok.experimental.FieldDefaults;
 
 import java.io.IOException;
+import java.util.Optional;
 
 import org.springframework.data.release.CliComponent;
 import org.springframework.data.release.TimedCommand;
+import org.springframework.data.release.git.GitOperations;
 import org.springframework.data.release.io.Workspace;
+import org.springframework.data.release.model.Project;
+import org.springframework.data.release.model.Projects;
+import org.springframework.data.release.model.TrainIteration;
 import org.springframework.data.release.utils.Logger;
 import org.springframework.shell.core.annotation.CliCommand;
+import org.springframework.shell.core.annotation.CliOption;
+import org.springframework.util.Assert;
 
 /**
  * @author Oliver Gierke
@@ -38,6 +45,7 @@ class BuildCommands extends TimedCommand {
 
 	@NonNull BuildOperations build;
 	@NonNull Workspace workspace;
+	@NonNull GitOperations git;
 	@NonNull Logger logger;
 
 	/**
@@ -54,4 +62,25 @@ class BuildCommands extends TimedCommand {
 		workspace.purge(build.getLocalRepository(),
 				path -> build.getLocalRepository().relativize(path).startsWith("org/springframework/data"));
 	}
+
+	/**
+	 * Triggers a build for all modules of the given {@link TrainIteration}.
+	 * 
+	 * @param iteration must not be {@literal null}.
+	 * @param projectKey can be {@literal null} or empty.
+	 */
+	@CliCommand("build")
+	public void build(@CliOption(key = "", mandatory = true) TrainIteration iteration, //
+			@CliOption(key = "module") String projectKey) {
+
+		Assert.notNull(iteration, "Train iteration must not be null!");
+		Optional<Project> project = Projects.byName(projectKey);
+
+		project.ifPresent(it -> build.triggerBuild(iteration.getModule(it)));
+
+		if (!project.isPresent()) {
+			git.prepare(iteration);
+			iteration.forEach(module -> build.triggerBuild(module));
+		}
+	}
 }

release-tools/src/main/java/org/springframework/data/release/build/BuildOperations.java

@@ -135,6 +135,10 @@ public class BuildOperations {
 		return doWithBuildSystem(module, BuildSystem::deploy);
 	}
 
+	public ModuleIteration triggerBuild(ModuleIteration module) {
+		return doWithBuildSystem(module, BuildSystem::triggerBuild);
+	}
+
 	/**
 	 * Selects the build system for each {@link ModuleIteration} contained in the given {@link TrainIteration} and
 	 * executes the given function for it.

release-tools/src/main/java/org/springframework/data/release/build/BuildSystem.java

@@ -60,4 +60,6 @@ interface BuildSystem extends Plugin<Project> {
 	 * @return
 	 */
 	ModuleIteration triggerDistributionBuild(ModuleIteration module);
+
+	ModuleIteration triggerBuild(ModuleIteration module);
 }

release-tools/src/main/java/org/springframework/data/release/build/MavenBuildSystem.java

@@ -221,6 +221,8 @@ class MavenBuildSystem implements BuildSystem {
 					"-DnewVersion=".concat(information.getReleaseTrainVersion()), //
 					"-DgroupId=org.springframework.data", //
 					"-DartifactId=spring-data-releasetrain");
+
+			mvn.execute(project, "install");
 		}
 
 		return module;
@@ -243,6 +245,26 @@ class MavenBuildSystem implements BuildSystem {
 		return information;
 	}
 
+	/* 
+	 * (non-Javadoc)
+	 * @see org.springframework.data.release.build.BuildSystem#triggerBuild(org.springframework.data.release.model.ModuleIteration)
+	 */
+	@Override
+	public ModuleIteration triggerBuild(ModuleIteration module) {
+
+		List<String> arguments = new ArrayList<>();
+		arguments.add("clean");
+		arguments.add("install");
+
+		if (module.getProject().skipTests()) {
+			arguments.add("-DskipTests");
+		}
+
+		mvn.execute(module.getProject(), arguments);
+
+		return module;
+	}
+
 	/**
 	 * Triggers Maven commands to deploy module artifacts to Spring Artifactory.
 	 *