Add ApplicableTypes for better type safety

Add AbstractSWCommand.Min
Add AbstractSWCommand.Max

src/de/steamwar/command/AbstractSWCommand.java

@@ -35,7 +35,6 @@ public abstract class AbstractSWCommand<T> {
 
     private boolean initialized = false;
     protected final List<SubCommand<T>> commandList = new ArrayList<>();
-    protected final List<SubCommand<T>> commandHelpList = new ArrayList<>();
 
     private final Map<String, AbstractTypeMapper<T, ?>> localTypeMapper = new HashMap<>();
     private final Map<String, AbstractValidator<T, ?>> localValidators = new HashMap<>();
@@ -109,15 +108,8 @@ public abstract class AbstractSWCommand<T> {
         List<Runnable> errors = new ArrayList<>();
         try {
             if (!commandList.stream().anyMatch(s -> s.invoke(errors::add, sender, alias, finalArgs))) {
-                if (!errors.isEmpty()) {
-                    errors.forEach(Runnable::run);
-                    return;
-                }
-                commandHelpList.stream().anyMatch(s -> s.invoke((ignore) -> {
-                }, sender, alias, finalArgs));
+                errors.forEach(Runnable::run);
             }
-        } catch (CommandNoHelpException e) {
-            // Ignored
         } catch (CommandFrameworkException e) {
             commandSystemError(sender, e);
             throw e;
@@ -139,12 +131,8 @@ public abstract class AbstractSWCommand<T> {
                 .collect(Collectors.toList());
     }
 
-    private void initialize() {
+    private synchronized void initialize() {
         if (initialized) return;
-        createMapping();
-    }
-
-    private synchronized void createMapping() {
         List<Method> methods = methods();
         for (Method method : methods) {
             Cached cached = method.getAnnotation(Cached.class);
@@ -181,32 +169,13 @@ public abstract class AbstractSWCommand<T> {
         }
         for (Method method : methods) {
             add(Register.class, method, i -> i > 0, true, null, (anno, parameters) -> {
-                if (!anno.help()) return;
-                boolean error = false;
-                if (parameters.length != 2) {
-                    commandSystemWarning(() -> "The method '" + method.toString() + "' is lacking parameters or has too many");
-                    error = true;
-                }
-                if (!parameters[parameters.length - 1].isVarArgs()) {
-                    commandSystemWarning(() -> "The method '" + method.toString() + "' is lacking the varArgs parameters as last Argument");
-                    error = true;
-                }
-                if (parameters[parameters.length - 1].getType().getComponentType() != String.class) {
-                    commandSystemWarning(() -> "The method '" + method.toString() + "' is lacking the varArgs parameters of type '" + String.class.getTypeName() + "' as last Argument");
-                    error = true;
-                }
-                if (error) return;
-                commandHelpList.add(new SubCommand<>(this, method, anno.value(), new HashMap<>(), new HashMap<>(), true, null, anno.noTabComplete()));
-            });
-
-            add(Register.class, method, i -> i > 0, true, null, (anno, parameters) -> {
-                if (anno.help()) return;
                 for (int i = 1; i < parameters.length; i++) {
                     Parameter parameter = parameters[i];
                     Class<?> clazz = parameter.getType();
                     if (parameter.isVarArgs() && i == parameters.length - 1) {
                         clazz = parameter.getType().getComponentType();
                     }
+                    checkAnnotationApplicability(parameter, clazz);
                     Mapper mapper = parameter.getAnnotation(Mapper.class);
                     if (clazz.isEnum() && mapper == null && !SWCommandUtils.getMAPPER_FUNCTIONS().containsKey(clazz.getTypeName())) {
                         continue;
@@ -217,7 +186,7 @@ public abstract class AbstractSWCommand<T> {
                         return;
                     }
                 }
-                commandList.add(new SubCommand<>(this, method, anno.value(), localTypeMapper, localValidators, false, anno.description(), anno.noTabComplete()));
+                commandList.add(new SubCommand<>(this, method, anno.value(), localTypeMapper, localValidators, anno.description(), anno.noTabComplete()));
             });
         }
 
@@ -229,18 +198,28 @@ public abstract class AbstractSWCommand<T> {
                 return Integer.compare(o1.comparableValue, o2.comparableValue);
             }
         });
-        commandHelpList.sort((o1, o2) -> {
-            int compare = Integer.compare(-o1.subCommand.length, -o2.subCommand.length);
-            if (compare != 0) {
-                return compare;
-            } else {
-                return Integer.compare(o1.method.getDeclaringClass() == AbstractSWCommand.class ? 1 : 0,
-                        o2.method.getDeclaringClass() == AbstractSWCommand.class ? 1 : 0);
-            }
-        });
         initialized = true;
     }
 
+    private void checkAnnotationApplicability(Parameter parameter, Class<?> clazz) {
+        Annotation[] annotations = parameter.getAnnotations();
+        for (Annotation annotation : annotations) {
+            ApplicableTypes applicableTypes = annotation.annotationType().getAnnotation(ApplicableTypes.class);
+            if (applicableTypes == null) continue;
+            Class<?>[] types = applicableTypes.value();
+            boolean applicable = false;
+            for (Class<?> type : types) {
+                if (type.isAssignableFrom(clazz)) {
+                    applicable = true;
+                    break;
+                }
+            }
+            if (!applicable) {
+                commandSystemWarning(() -> "The parameter '" + parameter.toString() + "' is using an unsupported annotation of type '" + annotation.annotationType().getName() + "'");
+            }
+        }
+    }
+
     private <T extends Annotation> void add(Class<T> annotation, Method method, IntPredicate parameterTester, boolean firstParameter, Class<?> returnType, BiConsumer<T, Parameter[]> consumer) {
         T[] anno = SWCommandUtils.getAnnotation(method, annotation);
         if (anno == null || anno.length == 0) return;
@@ -300,12 +279,22 @@ public abstract class AbstractSWCommand<T> {
         return methods;
     }
 
+    // --- Annotation for the command ---
+
+    /**
+     * Annotation for registering a method as a command
+     */
     @Retention(RetentionPolicy.RUNTIME)
     @Target({ElementType.METHOD})
     @Repeatable(Register.Registeres.class)
     protected @interface Register {
+
+        /**
+         * Identifier of subcommand
+         */
         String[] value() default {};
 
+        @Deprecated
         boolean help() default false;
 
         String[] description() default {};
@@ -359,8 +348,11 @@ public abstract class AbstractSWCommand<T> {
         boolean local() default false;
     }
 
+    // --- Implicit TypeMapper ---
+
     @Retention(RetentionPolicy.RUNTIME)
     @Target({ElementType.PARAMETER})
+    @ApplicableTypes({String.class, int.class, Integer.class, boolean.class, Boolean.class})
     protected @interface StaticValue {
         String[] value();
 
@@ -391,6 +383,8 @@ public abstract class AbstractSWCommand<T> {
         boolean onlyUINIG() default false;
     }
 
+    // --- Implicit Validator ---
+
     @Retention(RetentionPolicy.RUNTIME)
     @Target({ElementType.PARAMETER})
     protected @interface ErrorMessage {
@@ -415,6 +409,31 @@ public abstract class AbstractSWCommand<T> {
      */
     @Retention(RetentionPolicy.RUNTIME)
     @Target({ElementType.PARAMETER})
+    @ApplicableTypes({String.class})
     protected @interface Quotable {
     }
+
+    @Retention(RetentionPolicy.RUNTIME)
+    @Target({ElementType.PARAMETER})
+    @ApplicableTypes({int.class, Integer.class, long.class, Long.class, float.class, Float.class, double.class, Double.class})
+    protected @interface Min {
+        int intValue() default Integer.MIN_VALUE;
+        long longValue() default Long.MIN_VALUE;
+        float floatValue() default Float.MIN_VALUE;
+        double doubleValue() default Double.MIN_VALUE;
+
+        boolean inclusive() default true;
+    }
+
+    @Retention(RetentionPolicy.RUNTIME)
+    @Target({ElementType.PARAMETER})
+    @ApplicableTypes({int.class, Integer.class, long.class, Long.class, float.class, Float.class, double.class, Double.class})
+    protected @interface Max {
+        int intValue() default Integer.MAX_VALUE;
+        long longValue() default Long.MAX_VALUE;
+        float floatValue() default Float.MAX_VALUE;
+        double doubleValue() default Double.MAX_VALUE;
+
+        boolean inclusive() default true;
+    }
 }

src/de/steamwar/command/AbstractValidator.java

@@ -38,10 +38,12 @@ public interface AbstractValidator<K, T> {
      */
     boolean validate(K sender, T value, MessageSender messageSender);
 
+    @Deprecated
     default <C> Validator<C> validate(C value, MessageSender messageSender) {
         return new Validator<>(value, messageSender);
     }
 
+    @Deprecated
     @RequiredArgsConstructor
     class Validator<C> {
         private final C value;

src/de/steamwar/command/ApplicableTypes.java

@@ -1,7 +1,7 @@
 /*
  * This file is a part of the SteamWar software.
  *
- * Copyright (C) 2020  SteamWar.de-Serverteam
+ * Copyright (C) 2022  SteamWar.de-Serverteam
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Affero General Public License as published by
@@ -19,7 +19,13 @@
 
 package de.steamwar.command;
 
-class CommandNoHelpException extends RuntimeException {
-    
-    CommandNoHelpException() {}
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+@Retention(RetentionPolicy.RUNTIME)
+@Target(ElementType.ANNOTATION_TYPE)
+@interface ApplicableTypes {
+    Class<?>[] value();
 }

src/de/steamwar/command/CommandPart.java

@@ -24,6 +24,7 @@ import lombok.Setter;
 
 import java.lang.reflect.Array;
 import java.lang.reflect.Parameter;
+import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
 import java.util.List;
@@ -41,7 +42,7 @@ class CommandPart<T> {
 
     private AbstractSWCommand<T> command;
     private AbstractTypeMapper<T, ?> typeMapper;
-    private AbstractValidator<T, Object> validator;
+    private List<AbstractValidator<T, Object>> validators = new ArrayList<>();
     private Class<?> varArgType;
     private String optional;
 
@@ -53,19 +54,12 @@ class CommandPart<T> {
     @Setter
     private boolean onlyUseIfNoneIsGiven = false;
 
-    @Setter
-    private boolean allowNullValues = false;
-
-    @Setter
-    private boolean quotable = false;
-
     private Parameter parameter;
     private int parameterIndex;
 
-    public CommandPart(AbstractSWCommand<T> command, AbstractTypeMapper<T, ?> typeMapper, AbstractValidator<T, Object> validator, Class<?> varArgType, String optional, Parameter parameter, int parameterIndex) {
+    public CommandPart(AbstractSWCommand<T> command, AbstractTypeMapper<T, ?> typeMapper, Class<?> varArgType, String optional, Parameter parameter, int parameterIndex) {
         this.command = command;
         this.typeMapper = typeMapper;
-        this.validator = validator;
         this.varArgType = varArgType;
         this.optional = optional;
         this.parameter = parameter;
@@ -74,6 +68,11 @@ class CommandPart<T> {
         validatePart();
     }
 
+    void addValidator(AbstractValidator<T, Object> validator) {
+        if (validator == null) return;
+        validators.add(validator);
+    }
+
     public void setNext(CommandPart<T> next) {
         if (varArgType != null) {
             throw new IllegalArgumentException("There can't be a next part if this is a vararg part! In method " + parameter.getDeclaringExecutable() + " with parameter " + parameterIndex);
@@ -97,10 +96,12 @@ class CommandPart<T> {
                 }
                 Array.set(array, i - startIndex, validArgument.value);
             }
-            if (validator != null && !validator.validate(sender, array, (s, objects) -> {
-                errors.accept(() -> command.sendMessage(sender, s, objects));
-            })) {
-                throw new CommandParseException();
+            for (AbstractValidator<T, Object> validator : validators) {
+                if (!validator.validate(sender, array, (s, objects) -> {
+                    errors.accept(() -> command.sendMessage(sender, s, objects));
+                })) {
+                    throw new CommandParseException();
+                }
             }
             current.add(array);
             return;
@@ -136,7 +137,8 @@ class CommandPart<T> {
     public void generateTabComplete(List<String> current, T sender, String[] args, int startIndex) {
         if (varArgType != null) {
             for (int i = startIndex; i < args.length - 1; i++) {
-                CheckArgumentResult validArgument = checkArgument((ignore) -> {}, sender, args, i);
+                CheckArgumentResult validArgument = checkArgument((ignore) -> {
+                }, sender, args, i);
                 if (!validArgument.success) {
                     return;
                 }
@@ -149,7 +151,8 @@ class CommandPart<T> {
         }
 
         if (args.length - 1 > startIndex) {
-            CheckArgumentResult checkArgumentResult = checkArgument((ignore) -> {}, sender, args, startIndex);
+            CheckArgumentResult checkArgumentResult = checkArgument((ignore) -> {
+            }, sender, args, startIndex);
             if (checkArgumentResult.success && next != null) {
                 next.generateTabComplete(current, sender, args, startIndex + 1);
                 return;
@@ -186,10 +189,7 @@ class CommandPart<T> {
         } catch (Exception e) {
             return new CheckArgumentResult(false, null);
         }
-        if (value instanceof String && !quotable && ((String) value).contains(" ")) {
-            return new CheckArgumentResult(false, null);
-        }
-        if (validator != null && errors != null) {
+        for (AbstractValidator<T, Object> validator : validators) {
             try {
                 if (!validator.validate(sender, value, (s, objects) -> {
                     errors.accept(() -> {
@@ -202,6 +202,6 @@ class CommandPart<T> {
                 throw CommandFrameworkException.commandPartExceptions("validating", e, args[index], (varArgType != null ? varArgType : parameter.getType()), parameter.getDeclaringExecutable(), parameterIndex);
             }
         }
-        return new CheckArgumentResult(allowNullValues || value != null, value);
+        return new CheckArgumentResult(true, value);
     }
 }

src/de/steamwar/command/SWCommandUtils.java

@@ -82,44 +82,6 @@ public class SWCommandUtils {
         MAPPER_FUNCTIONS.put(alternativeClazz.getTypeName(), mapper);
     }
 
-    static <T> CommandPart<T> generateCommandPart(AbstractSWCommand<T> command, boolean help, String[] subCommand, Parameter[] parameters, Map<String, AbstractTypeMapper<T, ?>> localTypeMapper, Map<String, AbstractValidator<T, ?>> localValidator) {
-        CommandPart<T> first = null;
-        CommandPart<T> current = null;
-        for (String s : subCommand) {
-            CommandPart commandPart = new CommandPart(command, createMapper(s), null, null, null, null, -1);
-            commandPart.setIgnoreAsArgument(true);
-            if (current != null) {
-                current.setNext(commandPart);
-            }
-            current = commandPart;
-            if (first == null) {
-                first = current;
-            }
-        }
-        for (int i = 1; i < parameters.length; i++) {
-            Parameter parameter = parameters[i];
-            AbstractTypeMapper<T, ?> typeMapper = getTypeMapper(parameter, localTypeMapper);
-            AbstractValidator<T, Object> validator = (AbstractValidator<T, Object>) getValidator(parameter, localValidator);
-            Class<?> varArgType = parameter.isVarArgs() ? parameter.getType().getComponentType() : null;
-            AbstractSWCommand.OptionalValue optionalValue = parameter.getAnnotation(AbstractSWCommand.OptionalValue.class);
-            AbstractSWCommand.AllowNull allowNull = parameter.getAnnotation(AbstractSWCommand.AllowNull.class);
-            AbstractSWCommand.Quotable quotable = parameter.getAnnotation(AbstractSWCommand.Quotable.class);
-
-            CommandPart<T> commandPart = new CommandPart<>(command, typeMapper, validator, varArgType, optionalValue != null ? optionalValue.value() : null, parameter, i);
-            commandPart.setOnlyUseIfNoneIsGiven(optionalValue != null && optionalValue.onlyUINIG());
-            commandPart.setAllowNullValues(allowNull != null);
-            commandPart.setQuotable(quotable != null);
-            if (current != null) {
-                current.setNext(commandPart);
-            }
-            current = commandPart;
-            if (first == null) {
-                first = current;
-            }
-        }
-        return first;
-    }
-
     public static <T> AbstractTypeMapper<T, ?> getTypeMapper(Parameter parameter, Map<String, AbstractTypeMapper<T, ?>> localTypeMapper) {
         Class<?> clazz = parameter.getType();
         if (parameter.isVarArgs()) {

src/de/steamwar/command/SubCommand.java

@@ -43,7 +43,7 @@ public class SubCommand<T> {
 
     private CommandPart<T> commandPart;
 
-    SubCommand(AbstractSWCommand<T> abstractSWCommand, Method method, String[] subCommand, Map<String, AbstractTypeMapper<T, ?>> localTypeMapper, Map<String, AbstractValidator<T, ?>> localValidator, boolean help, String[] description, boolean noTabComplete) {
+    SubCommand(AbstractSWCommand<T> abstractSWCommand, Method method, String[] subCommand, Map<String, AbstractTypeMapper<T, ?>> localTypeMapper, Map<String, AbstractValidator<T, ?>> localValidator, String[] description, boolean noTabComplete) {
         this.abstractSWCommand = abstractSWCommand;
         this.method = method;
         try {
@@ -60,7 +60,7 @@ public class SubCommand<T> {
 
         validator = (AbstractValidator<T, T>) SWCommandUtils.getValidator(parameters[0], localValidator);
 
-        commandPart = SWCommandUtils.generateCommandPart(abstractSWCommand, help, subCommand, parameters, localTypeMapper, localValidator);
+        commandPart = generateCommandPart(abstractSWCommand, subCommand, parameters, localTypeMapper, localValidator);
 
         senderPredicate = t -> parameters[0].getType().isAssignableFrom(t.getClass());
         senderFunction = t -> parameters[0].getType().cast(t);
@@ -97,7 +97,7 @@ public class SubCommand<T> {
                 objects.add(0, senderFunction.apply(sender));
                 method.invoke(abstractSWCommand, objects.toArray());
             }
-        } catch (CommandNoHelpException | CommandFrameworkException e) {
+        } catch (CommandFrameworkException e) {
             throw e;
         } catch (CommandParseException e) {
             return false;
@@ -124,4 +124,110 @@ public class SubCommand<T> {
         commandPart.generateTabComplete(list, sender, args, 0);
         return list;
     }
+
+    private static <T> CommandPart<T> generateCommandPart(AbstractSWCommand<T> command, String[] subCommand, Parameter[] parameters, Map<String, AbstractTypeMapper<T, ?>> localTypeMapper, Map<String, AbstractValidator<T, ?>> localValidator) {
+        CommandPart<T> first = null;
+        CommandPart<T> current = null;
+        for (String s : subCommand) {
+            CommandPart commandPart = new CommandPart(command, SWCommandUtils.createMapper(s), null, null, null, -1);
+            commandPart.addValidator(NULL_FILTER);
+            commandPart.setIgnoreAsArgument(true);
+            if (current != null) {
+                current.setNext(commandPart);
+            }
+            current = commandPart;
+            if (first == null) {
+                first = current;
+            }
+        }
+        for (int i = 1; i < parameters.length; i++) {
+            Parameter parameter = parameters[i];
+            AbstractTypeMapper<T, ?> typeMapper = SWCommandUtils.getTypeMapper(parameter, localTypeMapper);
+            AbstractValidator<T, Object> validator = (AbstractValidator<T, Object>) SWCommandUtils.getValidator(parameter, localValidator);
+            Class<?> varArgType = parameter.isVarArgs() ? parameter.getType().getComponentType() : null;
+            AbstractSWCommand.OptionalValue optionalValue = parameter.getAnnotation(AbstractSWCommand.OptionalValue.class);
+            AbstractSWCommand.Min min = parameter.getAnnotation(AbstractSWCommand.Min.class);
+            AbstractSWCommand.Max max = parameter.getAnnotation(AbstractSWCommand.Max.class);
+
+            CommandPart<T> commandPart = new CommandPart<>(command, typeMapper, varArgType, optionalValue != null ? optionalValue.value() : null, parameter, i);
+            commandPart.setOnlyUseIfNoneIsGiven(optionalValue != null && optionalValue.onlyUINIG());
+            if (parameter.getAnnotation(AbstractSWCommand.Quotable.class) == null) {
+                commandPart.addValidator((AbstractValidator<T, Object>) STRING_SPACE_FILTER);
+            }
+            commandPart.addValidator(validator);
+            if (min != null) {
+                commandPart.addValidator((AbstractValidator<T, Object>) createMinValidator(varArgType != null ? varArgType : parameter.getType(), min));
+            }
+            if (max != null) {
+                commandPart.addValidator((AbstractValidator<T, Object>) createMaxValidator(varArgType != null ? varArgType : parameter.getType(), max));
+            }
+            if (parameter.getAnnotation(AbstractSWCommand.AllowNull.class) == null) {
+                commandPart.addValidator((AbstractValidator<T, Object>) NULL_FILTER);
+            }
+            if (current != null) {
+                current.setNext(commandPart);
+            }
+            current = commandPart;
+            if (first == null) {
+                first = current;
+            }
+        }
+        return first;
+    }
+
+    private static final AbstractValidator<?, Object> NULL_FILTER = (sender, value, messageSender) -> value != null;
+
+    private static final AbstractValidator<?, Object> STRING_SPACE_FILTER = (sender, value, messageSender) -> {
+        if (!(value instanceof String)) return true;
+        String s = (String) value;
+        return !s.contains(" ");
+    };
+
+    private static AbstractValidator<?, Object> createMinValidator(Class<?> clazz, AbstractSWCommand.Min min) {
+        Function<Number, Number> comparator;
+        if (clazz == int.class || clazz == Integer.class) {
+            int minValue = min.intValue();
+            comparator = number -> Integer.compare(number.intValue(), minValue);
+        } else if (clazz == long.class || clazz == Long.class) {
+            long minValue = min.longValue();
+            comparator = number -> Long.compare(number.longValue(), minValue);
+        } else if (clazz == float.class || clazz == Float.class) {
+            float minValue = min.floatValue();
+            comparator = number -> Float.compare(number.floatValue(), minValue);
+        } else if (clazz == double.class || clazz == Double.class) {
+            double minValue = min.doubleValue();
+            comparator = number -> Double.compare(number.doubleValue(), minValue);
+        } else {
+            throw new IllegalArgumentException("Min annotation is not supported for " + clazz);
+        }
+        if (min.inclusive()) {
+            return (sender, value, messageSender) -> comparator.apply((Number) value).intValue() >= 0;
+        } else {
+            return (sender, value, messageSender) -> comparator.apply((Number) value).intValue() > 0;
+        }
+    }
+
+    private static AbstractValidator<?, Object> createMaxValidator(Class<?> clazz, AbstractSWCommand.Max max) {
+        Function<Number, Number> comparator;
+        if (clazz == int.class || clazz == Integer.class) {
+            int minValue = max.intValue();
+            comparator = number -> Integer.compare(number.intValue(), minValue);
+        } else if (clazz == long.class || clazz == Long.class) {
+            long minValue = max.longValue();
+            comparator = number -> Long.compare(number.longValue(), minValue);
+        } else if (clazz == float.class || clazz == Float.class) {
+            float minValue = max.floatValue();
+            comparator = number -> Float.compare(number.floatValue(), minValue);
+        } else if (clazz == double.class || clazz == Double.class) {
+            double minValue = max.doubleValue();
+            comparator = number -> Double.compare(number.doubleValue(), minValue);
+        } else {
+            throw new IllegalArgumentException("Max annotation is not supported for " + clazz);
+        }
+        if (max.inclusive()) {
+            return (sender, value, messageSender) -> comparator.apply((Number) value).intValue() <= 0;
+        } else {
+            return (sender, value, messageSender) -> comparator.apply((Number) value).intValue() < 0;
+        }
+    }
 }

testsrc/de/steamwar/command/BetterExceptionCommand.java

@@ -45,6 +45,7 @@ public class BetterExceptionCommand extends TestSWCommand {
 
             @Override
             public boolean validate(String sender, String value, MessageSender messageSender) {
+                System.out.println("Validate: " + value);
                 throw new SecurityException();
             }
 

testsrc/de/steamwar/command/NumberValidatorCommand.java

@@ -0,0 +1,35 @@
+/*
+ * This file is a part of the SteamWar software.
+ *
+ * Copyright (C) 2022  SteamWar.de-Serverteam
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.steamwar.command;
+
+import de.steamwar.command.dto.ExecutionIdentifier;
+import de.steamwar.command.dto.TestSWCommand;
+
+public class NumberValidatorCommand extends TestSWCommand {
+
+    public NumberValidatorCommand() {
+        super("numberValidator");
+    }
+
+    @Register
+    public void test(String sender, @Min(intValue = 0) @Max(intValue = 10) int i) {
+        throw new ExecutionIdentifier("RunNumberValidator with int");
+    }
+}

testsrc/de/steamwar/command/NumberValidatorCommandTest.java

@@ -0,0 +1,51 @@
+/*
+ * This file is a part of the SteamWar software.
+ *
+ * Copyright (C) 2022  SteamWar.de-Serverteam
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.steamwar.command;
+
+import de.steamwar.command.dto.ExecutionIdentifier;
+import org.junit.Test;
+
+import static de.steamwar.AssertionUtils.assertCMDFramework;
+
+public class NumberValidatorCommandTest {
+
+    @Test
+    public void testMinValue() {
+        NumberValidatorCommand command = new NumberValidatorCommand();
+        command.execute("sender", "", new String[]{"-1"});
+    }
+
+    @Test
+    public void testMaxValue() {
+        NumberValidatorCommand command = new NumberValidatorCommand();
+        command.execute("sender", "",  new String[]{"11"});
+    }
+
+    @Test
+    public void testValidValue() {
+        try {
+            NumberValidatorCommand command = new NumberValidatorCommand();
+            command.execute("sender", "", new String[]{"2"});
+            assert false;
+        } catch (Exception e) {
+            assertCMDFramework(e, ExecutionIdentifier.class, "RunNumberValidator with int");
+        }
+    }
+}

testsrc/de/steamwar/command/SimpleCommand.java

@@ -19,7 +19,6 @@
 
 package de.steamwar.command;
 
-import de.steamwar.command.AbstractSWCommand.Register;
 import de.steamwar.command.dto.ExecutionIdentifier;
 import de.steamwar.command.dto.TestSWCommand;
 
@@ -29,7 +28,7 @@ public class SimpleCommand extends TestSWCommand {
         super("simple");
     }
 
-    @Register(value = "a", help = true)
+    @Register(value = "a", noTabComplete = true)
     public void test(String s, String... varargs) {
         throw new ExecutionIdentifier("RunSimple with Varargs");
     }

testsrc/de/steamwar/command/dto/TestSWCommand.java

@@ -51,9 +51,11 @@ public class TestSWCommand extends AbstractSWCommand<String> {
 
     @Override
     protected void commandSystemError(String sender, CommandFrameworkException e) {
+        System.out.println("CommandSystemError: " + e.getMessage());
     }
 
     @Override
     protected void commandSystemWarning(Supplier<String> message) {
+        System.out.println("CommandSystemWarning: " + message.get());
     }
 }