org.tomitribe.crest.val.BeanValidationMessages Maven / Gradle / Ivy

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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.tomitribe.crest.val;

import javax.validation.ConstraintViolation;
import javax.validation.ConstraintViolationException;
import java.util.List;
import java.util.Optional;

import static java.util.stream.Collectors.toList;

abstract class BeanValidationMessages implements BeanValidationImpl {
    @Override
    public Optional> messages(final Throwable exception) {
        return Optional.of(exception)
                .filter(ConstraintViolationException.class::isInstance)
                .map(ConstraintViolationException.class::cast)
                .map(cve -> cve.getConstraintViolations().stream().map(ConstraintViolation::getMessage).collect(toList()));
    }
}