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The code in this module is not explicitly related to clustering, but rather contains resuable code used by clustering modules and any modules that integrate with clustering.

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/*
 * Copyright The WildFly Authors
 * SPDX-License-Identifier: Apache-2.0
 */

package org.jboss.as.clustering.controller;

import java.util.Collection;
import java.util.EnumSet;
import java.util.stream.Stream;

import org.jboss.as.controller.AttributeDefinition;
import org.jboss.as.controller.ExpressionResolver;
import org.jboss.as.controller.OperationFailedException;
import org.jboss.dmr.ModelNode;

/**
 * Interface to be implemented by attribute enumerations.
 * @author Paul Ferraro
 */
public interface Attribute extends Definable {

    /**
     * Returns the name of this attribute.
     * @return the attribute name
     */
    default String getName() {
        return this.getDefinition().getName();
    }

    /**
     * Resolves the value of this attribute from the specified model applying any default value.
     * @param resolver an expression resolver
     * @param model the resource model
     * @return the resolved value
     * @throws OperationFailedException if the value was not valid
     */
    default ModelNode resolveModelAttribute(ExpressionResolver resolver, ModelNode model) throws OperationFailedException {
        return this.getDefinition().resolveModelAttribute(resolver, model);
    }

    /**
     * Convenience method that exposes an Attribute enum as a stream of {@link AttributeDefinition}s.
     * @param  the attribute enum type
     * @param enumClass the enum class
     * @return a stream of attribute definitions.
     */
    static  & Attribute> Stream stream(Class enumClass) {
        return stream(EnumSet.allOf(enumClass));
    }

    /**
     * Convenience method that exposes a set of attributes as a stream of {@link AttributeDefinition}s.
     * @param  the attribute type
     * @return a stream of attribute definitions.
     */
    static  Stream stream(Collection attributes) {
        return attributes.stream().map(Attribute::getDefinition);
    }
}

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