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This artifact provides the API classes that are necessary to implement general configuration Rules on the Memority IM platform.

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/*
 * Copyright (c) 2016-2023 Memority. All Rights Reserved.
 *
 * This file is part of Memority Citadel API , a Memority project.
 *
 * This file is released under the Memority Public Artifacts End-User License Agreement,
 * see 
 * Unauthorized copying of this file, via any medium is strictly prohibited.
 */
package com.memority.citadel.shared.api.im;

import java.util.Collections;

/**
 * Helper methods to keep {@link HasAttributeValues} & co clean.
 */
class HasAttributeValueHelper {

    @SuppressWarnings("unchecked")
    static  V doGet(HasAttributeValues obj, String propertyName) {
        AttributeValue attributeValue = obj.attributeValueMap().get(propertyName);

        // Missing/empty attribute
        if (attributeValue == null) {
            return null;
        }

        if (!attributeValue.hasValue()) {
            return attributeValue.isMultiValued() ? (V) Collections.emptyList() : null;
        }

        return attributeValue.isMultiValued() ?
                (V) obj.values(propertyName) :
                (V) obj.value(propertyName);
    }

    static Object doPut(HasMutableAttributeValues obj, String key, Object value) {
        Object prev = doGet(obj, key);
        obj.attributeValueMap().put(key, AttributeValue.from(key, value));
        return prev;
    }
}