org.grails.async.transform.internal.DelegateAsyncUtils.groovy Maven / Gradle / Ivy

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Grails Web Application Framework

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/*
 * Copyright 2013 SpringSource
 *
 * 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
 *
 *      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.grails.async.transform.internal

import groovy.transform.CompileStatic
import org.grails.async.decorator.PromiseDecorator
import org.grails.async.decorator.PromiseDecoratorProvider

/**
 * Helps looking up the decorators
 *
 * @author Graeme Rocher
 * @since 2.3
 */
@CompileStatic
class DelegateAsyncUtils {
    /**
     * Obtains all {@link org.grails.async.decorator.PromiseDecorator} instances for the target and additional decorators supplied
     *
     * @param target The target
     * @param additional The additional
     * @return The additional promise decorators
     */
    static Collection getPromiseDecorators(Object target, Collection additional ) {
        Collection decorators = []
        if (target instanceof PromiseDecoratorProvider) {
            decorators.addAll(((PromiseDecoratorProvider)target).getDecorators())
        }
        if (additional) {
            decorators.addAll(additional)
        }

        return decorators
    }

}