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I have created a {{ CustomMin }} constraint, which is an exact copy of {{ javax.validation.constraints.Min as follows }} :
{code:title=CustomMin.java}
@Target({ METHOD, FIELD, ANNOTATION_TYPE, CONSTRUCTOR, PARAMETER })
@Retention(RUNTIME)
@Documented
@Constraint(validatedBy = { })
public @interface CustomMin {
String message() default "{javax.validation.constraints.Min.message}";
Class<?>[] groups() default { };
Class<? extends Payload>[] payload() default { };
/**
* @return value the element must be higher or equal to
*/
long value();
/**
* Defines several {@link CustomMin} annotations on the same element.
*
* @see CustomMin
*/
@Target({ METHOD, FIELD, ANNOTATION_TYPE, CONSTRUCTOR, PARAMETER })
@Retention(RUNTIME)
@Documented
@interface List {
CustomMin[] value();
}
}
{code}
I am trying to validate parameters using the {{ ExecutableValidator }} as follows:
{code:title=TestValidator.java}
package com.test.validation.constraints;
import javax.validation.ConstraintViolation;
import javax.validation.Validation;
import javax.validation.ValidatorFactory;
import javax.validation.constraints.Min;
import javax.validation.executable.ExecutableValidator;
import java.lang.reflect.Method;
import java.util.Set;
public class TestValidator {
@CustomMin(1)
public Integer test(@Min(1) Integer i) {
return i;
}
public static void main(String[] args) throws Exception {
TestValidator customerFacade = new TestValidator();
Method method = TestValidator.class.getMethod("test", Integer.class);
Object[] parameterValues = {0};
ValidatorFactory factory = Validation.buildDefaultValidatorFactory();
ExecutableValidator executableValidator = factory.getValidator().forExecutables();
Set<ConstraintViolation<TestValidator>> parameterViolations = executableValidator.validateParameters(
customerFacade,
method,
parameterValues
);
System.out.println("parameterViolations = " + parameterViolations);
}
}
{code}
The above is causing the following exception:
{code}
Exception in thread "main" javax.validation.ConstraintDeclarationException: HV000141: The constraint com.test.validation.constraints.CustomMin used ConstraintTarget#IMPLICIT where the target cannot be inferred.
at org.hibernate.validator.internal.metadata.descriptor.ConstraintDescriptorImpl.determineConstraintType(ConstraintDescriptorImpl.java:404)
at org.hibernate.validator.internal.metadata.descriptor.ConstraintDescriptorImpl.<init>(ConstraintDescriptorImpl.java:186)
at org.hibernate.validator.internal.metadata.descriptor.ConstraintDescriptorImpl.<init>(ConstraintDescriptorImpl.java:208)
at org.hibernate.validator.internal.metadata.provider.AnnotationMetaDataProvider.buildConstraintDescriptor(AnnotationMetaDataProvider.java:588)
at org.hibernate.validator.internal.metadata.provider.AnnotationMetaDataProvider.findConstraintAnnotations(AnnotationMetaDataProvider.java:515)
at org.hibernate.validator.internal.metadata.provider.AnnotationMetaDataProvider.findConstraints(AnnotationMetaDataProvider.java:469)
at org.hibernate.validator.internal.metadata.provider.AnnotationMetaDataProvider.findExecutableMetaData(AnnotationMetaDataProvider.java:313)
at org.hibernate.validator.internal.metadata.provider.AnnotationMetaDataProvider.getMetaData(AnnotationMetaDataProvider.java:294)
at org.hibernate.validator.internal.metadata.provider.AnnotationMetaDataProvider.getMethodMetaData(AnnotationMetaDataProvider.java:280)
at org.hibernate.validator.internal.metadata.provider.AnnotationMetaDataProvider.retrieveBeanConfiguration(AnnotationMetaDataProvider.java:143)
at org.hibernate.validator.internal.metadata.provider.AnnotationMetaDataProvider.getBeanConfiguration(AnnotationMetaDataProvider.java:130)
at org.hibernate.validator.internal.metadata.provider.AnnotationMetaDataProvider.getBeanConfigurationForHierarchy(AnnotationMetaDataProvider.java:113)
at org.hibernate.validator.internal.metadata.BeanMetaDataManager.createBeanMetaData(BeanMetaDataManager.java:187)
at org.hibernate.validator.internal.metadata.BeanMetaDataManager.getBeanMetaData(BeanMetaDataManager.java:152)
at org.hibernate.validator.internal.engine.ValidatorImpl.validateParametersInContext(ValidatorImpl.java:878)
at org.hibernate.validator.internal.engine.ValidatorImpl.validateParameters(ValidatorImpl.java:240)
at org.hibernate.validator.internal.engine.ValidatorImpl.validateParameters(ValidatorImpl.java:198)
at com.test.validation.constraints.TestValidator.main(TestValidator.java:23)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:120)
{code}
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