TA 역할 Spring 경계 smoke (role-ta-live-1522-001)

src/main/java/com/klaroworks/runtime/service/RoleMatrixService.java

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+package com.klaroworks.runtime.service;
+
+import com.klaroworks.runtime.dto.RoleCreateRequest;
+import com.klaroworks.runtime.dto.RoleResponse;
+import com.klaroworks.runtime.entity.Role;
+import com.klaroworks.runtime.exception.DuplicateResourceException;
+import com.klaroworks.runtime.exception.RoleNotFoundException;
+import com.klaroworks.runtime.repository.RoleRepository;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+import java.util.List;
+
+@Service
+@RequiredArgsConstructor
+@Transactional(readOnly = true)
+public class RoleMatrixService {
+    
+    private final RoleRepository roleRepository;
+    
+    @Transactional
+    public RoleResponse createRole(RoleCreateRequest request) {
+        if (roleRepository.existsByName(request.getName())) {
+            throw new DuplicateResourceException("Role", request.getName());
+        }
+        Role role = Role.create(request.getName(), request.getDescription());
+        return RoleResponse.from(roleRepository.save(role));
+    }
+    
+    public RoleResponse getRoleById(Long id) {
+        return roleRepository.findById(id)
+                .map(RoleResponse::from)
+                .orElseThrow(() -> new RoleNotFoundException(id));
+    }
+    
+    public List<RoleResponse> getAllRoles() {
+        return roleRepository.findAll().stream().map(RoleResponse::from).toList();
+    }
+    
+    @Transactional
+    public RoleResponse updateRole(Long id, RoleCreateRequest request) {
+        Role role = roleRepository.findById(id)
+                .orElseThrow(() -> new RoleNotFoundException(id));
+        role.update(request.getName(), request.getDescription());
+        return RoleResponse.from(role);
+    }
+    
+    @Transactional
+    public void deleteRole(Long id) {
+        if (!roleRepository.existsById(id)) throw new RoleNotFoundException(id);
+        roleRepository.deleteById(id);
+    }
+}