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/validator/MinValidator.java package shared; import javax.validation.ConstraintValidator; import javax.validation.ConstraintValidatorContext; import javax.validation.constraints.Min; import org.hibernate.mapping.Property; public class MinValidator implements ConstraintValidator<Min, Object> { double min; //part of the Validator<Annotation> contract, //allows to get and use the annotation values public void initialize(Min parameters) { min = parameters.value(); } //part of the property constraint contract public boolean isValid(Object value, ConstraintValidatorContext constraintContext) { if (value==null) return true; if ( value instanceof Number) { double valueRead = ((Number) value).doubleValue(); return valueRead >= min; } return false; } public void apply(Property arg0) { } }

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