org.kie.internal.command.RegistryContext Maven / Gradle / Ivy

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/*
 * Copyright 2018 Red Hat, Inc. and/or its affiliates.
 *
 * 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.kie.internal.command;

import java.util.function.Function;

import org.kie.api.runtime.Context;

public interface RegistryContext extends Context {

     RegistryContext register(Class clazz, T instance);

     T lookup(Class clazz);

    default  T computeIfAbsent(Class clazz, Function, ? extends  T> mappingFunction) {
        T element = lookup(clazz);
        if (element == null) {
            element = mappingFunction.apply(clazz);
            register(clazz, element);
        }
        return element;
    }

    ContextManager getContextManager();
}