io.micronaut.serde.support.util.SerdeAnnotationUtil Maven / Gradle / Ivy

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/*
 * Copyright 2017-2021 original authors
 *
 * Licensed 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
 *
 * https://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 io.micronaut.serde.support.util;

import io.micronaut.core.annotation.AnnotationMetadata;
import io.micronaut.core.annotation.Internal;
import io.micronaut.core.reflect.ReflectionUtils;
import io.micronaut.core.util.ArrayUtils;
import io.micronaut.core.util.CollectionUtils;
import io.micronaut.serde.config.annotation.SerdeConfig;

/**
 * Utility methods for annotations.
 *
 * @since 1.0.0
 */
@Internal
public final class SerdeAnnotationUtil {
    /**
     * Resolve json views.
     * @param beanMetadata The bean metadata
     * @param annotationMetadata The element metadata
     * @return The views
     */
    public static Class[] resolveViews(AnnotationMetadata beanMetadata,
                                          AnnotationMetadata annotationMetadata) {
        Class[] views = annotationMetadata.classValues(SerdeConfig.class, SerdeConfig.VIEWS);
        if (ArrayUtils.isEmpty(views)) {
            views = beanMetadata.classValues(SerdeConfig.class, SerdeConfig.VIEWS);
        }
        views = ArrayUtils.isNotEmpty(views) ? CollectionUtils.setOf(views).toArray(ReflectionUtils.EMPTY_CLASS_ARRAY) : null;
        return views;
    }
}