de.thksystems.validation.beanvalidation.AbstractValueValidator Maven / Gradle / Ivy

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package de.thksystems.validation.beanvalidation;

import java.lang.annotation.Annotation;
import java.util.Arrays;
import java.util.Collection;
import java.util.function.Predicate;

import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorContext;

public abstract class AbstractValueValidator implements ConstraintValidator {

    @Override
    public void initialize(A constraintAnnotation) {
    }

    @Override
    public boolean isValid(Object value, ConstraintValidatorContext context) {
        // Null is always valid (Use an additional @NotNull to avoid)
        if (value == null) {
            return true;
        }
        // Check for collection of objects (as strings)
        if (value instanceof Collection) {
            return ((Collection) value).stream().allMatch(getPredicate());
        }
        // Check for array of objects (as strings)
        if (value.getClass().isArray()) {
            return Arrays.stream((Object[]) value).allMatch(getPredicate());
        }
        // Check as string
        return getPredicate().test(value.toString());
    }

    protected abstract Predicate