Package org.springframework.data.util

Class NullnessMethodInvocationValidator

java.lang.Object

org.springframework.data.util.NullnessMethodInvocationValidator

All Implemented Interfaces:

Advice, Interceptor, MethodInterceptor

Direct Known Subclasses:

MethodInvocationValidator

public class NullnessMethodInvocationValidator
extends Object
implements MethodInterceptor

Interceptor enforcing required return value and method parameter constraints declared on repository query methods. Supports Kotlin nullness markers and JSR-305 Non-null annotations. Originally implemented via MethodInvocationValidator.

Since:

3.5

Author:

Mark Paluch, Johannes Englmeier, Christoph Strobl

See Also:

• NonNull
• ReflectionUtils.isNullable(MethodParameter)
• NullableUtils

Constructor Summary

Constructors

Constructor	Description
NullnessMethodInvocationValidator()

Method Summary

Modifier and Type	Method	Description
protected RuntimeException	argumentIsNull(Method method, String parameterName)	Template method to construct a RuntimeException indicating failure to provide a non-null value for a method parameter.
Object	invoke(MethodInvocation invocation)
protected RuntimeException	returnValueIsNull(Method method)	Template method to construct a RuntimeException indicating failure to return a non-null return value.
static boolean	supports(Class<?> type)	Returns true if the type is supported by this interceptor.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

NullnessMethodInvocationValidator

public NullnessMethodInvocationValidator()

Method Details

supports

public static boolean supports(Class<?> type)

Returns true if the type is supported by this interceptor.

Parameters:

type - the interface class.

Returns:

true if the type is supported by this interceptor.

invoke

@Nullable
public Object invoke(MethodInvocation invocation)
              throws Throwable

Specified by:

invoke in interface MethodInterceptor

Throws:

Throwable

argumentIsNull

protected RuntimeException argumentIsNull(Method method,
 String parameterName)

Template method to construct a RuntimeException indicating failure to provide a non-null value for a method parameter.

Parameters:

method -

parameterName -

Returns:

returnValueIsNull

protected RuntimeException returnValueIsNull(Method method)

Template method to construct a RuntimeException indicating failure to return a non-null return value.

Parameters:

method -

Returns: