/*
 * Copyright (C) 2015 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.jboss.errai.ioc.rebind.ioc.graph.api;

import org.jboss.errai.ioc.client.container.FactoryHandle;
import org.jboss.errai.ioc.rebind.ioc.graph.api.DependencyGraphBuilder.Dependency;

/**
 * A collection of {@link Injectable} whose {@link Dependency dependencies} have
 * all been fully satisfied.
 *
 * @see DependencyGraphBuilder
 * @author Max Barkley <mbarkley@redhat.com>
 */
public interface DependencyGraph extends Iterable<Injectable> {

  /**
   * @param factoryName The unique {@link FactoryHandle#getFactoryName() name} of the desired {@link Injectable}.
   * @return The unique {@link Injectable} with the given {@link FactoryHandle#getFactoryName() name}.
   */
  Injectable getConcreteInjectable(String factoryName);

  /**
   * @return The number of {@link Injectable injectables} in the graph.
   */
  int getNumberOfInjectables();

}
