Command global prefix

spring-shell-core-autoconfigure/src/main/java/org/springframework/shell/core/autoconfigure/SpringShellProperties.java

@@ -245,6 +245,8 @@ public void setEnabled(boolean enabled) {
 
 	public static class Command {
 
+		private String prefix = "";
+
 		private HelpCommand help = new HelpCommand();
 
 		private ClearCommand clear = new ClearCommand();
@@ -255,6 +257,14 @@ public static class Command {
 
 		private VersionCommand version = new VersionCommand();
 
+		public String getPrefix() {
+			return prefix;
+		}
+
+		public void setPrefix(String prefix) {
+			this.prefix = prefix;
+		}
+
 		public void setHelp(HelpCommand help) {
 			this.help = help;
 		}

spring-shell-core/src/main/java/org/springframework/shell/core/command/annotation/support/CommandFactoryBean.java

@@ -91,7 +91,7 @@ public Command getObject() {
 		}
 
 		// get command metadata
-		String name = groupPrefix + (groupPrefix.isEmpty() ? "" : " ") + String.join(" ", command.name());
+		var name = resolveName(groupPrefix, command);
 		name = name.isEmpty() ? Utils.unCamelify(this.method.getName()) : name;
 		String description = command.description();
 		description = description.isEmpty() ? "N/A" : description;
@@ -138,6 +138,19 @@ public Command getObject() {
 		return methodInvokerCommandAdapter;
 	}
 
+	private String resolveName(String groupPrefix, org.springframework.shell.core.command.annotation.Command command) {
+		String globalPrefix = this.applicationContext.getEnvironment().getProperty("spring.shell.command.prefix", "");
+		List<String> parts = new ArrayList<>();
+		if (!globalPrefix.isEmpty()) {
+			parts.add(globalPrefix);
+		}
+		if (!groupPrefix.isEmpty()) {
+			parts.add(groupPrefix);
+		}
+		parts.add(String.join(" ", command.name()));
+		return String.join(" ", parts);
+	}
+
 	private List<CommandOption> getCommandOptions() {
 		List<CommandOption> commandOptions = new ArrayList<>();
 		for (Parameter parameter : this.method.getParameters()) {

spring-shell-core/src/test/java/org/springframework/shell/core/command/annotation/support/CommandFactoryBeanTests.java

@@ -25,6 +25,7 @@
 import org.springframework.beans.factory.NoSuchBeanDefinitionException;
 import org.springframework.context.ApplicationContext;
 import org.springframework.core.convert.TypeDescriptor;
+import org.springframework.core.env.Environment;
 import org.springframework.core.convert.converter.Converter;
 import org.springframework.core.convert.converter.ConverterFactory;
 import org.springframework.core.convert.converter.GenericConverter;
@@ -48,10 +49,17 @@
 class CommandFactoryBeanTests {
 
 	private static ApplicationContext mockApplicationContext() {
+		return mockApplicationContext("");
+	}
+
+	private static ApplicationContext mockApplicationContext(String globalPrefix) {
 		ApplicationContext context = mock(ApplicationContext.class);
 		when(context.getBeansOfType(Converter.class)).thenReturn(Collections.emptyMap());
 		when(context.getBeansOfType(GenericConverter.class)).thenReturn(Collections.emptyMap());
 		when(context.getBeansOfType(ConverterFactory.class)).thenReturn(Collections.emptyMap());
+		Environment environment = mock(Environment.class);
+		when(environment.getProperty("spring.shell.command.prefix", "")).thenReturn(globalPrefix);
+		when(context.getEnvironment()).thenReturn(environment);
 		return context;
 	}
 
@@ -181,6 +189,62 @@ private static void runConvertCommandAndAssert(ApplicationContext context) throw
 		assertThat(ConverterTarget.lastSeen.text).isEqualTo("hello");
 	}
 
+	@Test
+	void globalPrefixAppliedWhenNoCommandGroupPrefix() throws Exception {
+		ApplicationContext context = mockApplicationContext("app");
+		when(context.getBean(NoGroupCommands.class)).thenReturn(new NoGroupCommands());
+		Method method = Arrays.stream(NoGroupCommands.class.getDeclaredMethods())
+			.filter(m -> m.getName().equals("ping"))
+			.findFirst()
+			.orElseThrow();
+		CommandFactoryBean factory = new CommandFactoryBean(method);
+		factory.setApplicationContext(context);
+
+		org.springframework.shell.core.command.Command result = factory.getObject();
+
+		assertEquals("app ping", result.getName());
+	}
+
+	@Test
+	void globalAndCommandGroupPrefixesAreChained() throws Exception {
+		ApplicationContext context = mockApplicationContext("shell");
+		when(context.getBean(GreetingCommands.class)).thenReturn(new GreetingCommands());
+		Method method = Arrays.stream(GreetingCommands.class.getDeclaredMethods())
+			.filter(m -> m.getName().equals("hi"))
+			.findFirst()
+			.orElseThrow();
+		CommandFactoryBean factory = new CommandFactoryBean(method);
+		factory.setApplicationContext(context);
+
+		org.springframework.shell.core.command.Command result = factory.getObject();
+
+		assertEquals("shell greeting hi", result.getName());
+	}
+
+	@Test
+	void noPrefixesLeaveNameUnchanged() throws Exception {
+		ApplicationContext context = mockApplicationContext("");
+		when(context.getBean(NoGroupCommands.class)).thenReturn(new NoGroupCommands());
+		Method method = Arrays.stream(NoGroupCommands.class.getDeclaredMethods())
+			.filter(m -> m.getName().equals("ping"))
+			.findFirst()
+			.orElseThrow();
+		CommandFactoryBean factory = new CommandFactoryBean(method);
+		factory.setApplicationContext(context);
+
+		org.springframework.shell.core.command.Command result = factory.getObject();
+
+		assertEquals("ping", result.getName());
+	}
+
+	static class NoGroupCommands {
+
+		@Command(name = "ping")
+		public void ping() {
+		}
+
+	}
+
 	static class Message {
 
 		String text;