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Introduce DataClassRowMapper with record-style constructor binding support

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Closes gh-24695
This commit is contained in:
Juergen Hoeller
2020-08-28 18:52:35 +02:00
parent d4192b9d35
commit d37eaa5941
10 changed files with 388 additions and 80 deletions
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9
spring-web/src/main/java/org/springframework/web/method/annotation/ModelAttributeMethodProcessor.java
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@@ -82,8 +82,6 @@ import org.springframework.web.multipart.support.StandardServletPartUtils;
*/
public class ModelAttributeMethodProcessor implements HandlerMethodArgumentResolver, HandlerMethodReturnValueHandler {
private static final ParameterNameDiscoverer parameterNameDiscoverer = new DefaultParameterNameDiscoverer();
protected final Log logger = LogFactory.getLog(getClass());
private final boolean annotationNotRequired;
@@ -258,13 +256,8 @@ public class ModelAttributeMethodProcessor implements HandlerMethodArgumentResol
}
// A single data class constructor -> resolve constructor arguments from request parameters.
ConstructorProperties cp = ctor.getAnnotation(ConstructorProperties.class);
String[] paramNames = (cp != null ? cp.value() : parameterNameDiscoverer.getParameterNames(ctor));
Assert.state(paramNames != null, () -> "Cannot resolve parameter names for constructor " + ctor);
String[] paramNames = BeanUtils.getParameterNames(ctor);
Class<?>[] paramTypes = ctor.getParameterTypes();
Assert.state(paramNames.length == paramTypes.length,
() -> "Invalid number of parameter names: " + paramNames.length + " for constructor " + ctor);
Object[] args = new Object[paramTypes.length];
WebDataBinder binder = binderFactory.createBinder(webRequest, null, attributeName);
String fieldDefaultPrefix = binder.getFieldDefaultPrefix();