| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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.apache.sling.models.spi; |
| |
| import java.lang.reflect.AnnotatedElement; |
| import java.lang.reflect.Type; |
| |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| import org.osgi.annotation.versioning.ConsumerType; |
| |
| /** |
| * Service interface for pluggable value injectors. |
| */ |
| @ConsumerType |
| public interface Injector { |
| |
| /** |
| * Return a logical name for the injector. Used in resolving <pre>@Source</pre> annotations. |
| * |
| * @return the injector's name |
| */ |
| @NotNull String getName(); |
| |
| /** |
| * Produce a value for an injection point. |
| * |
| * @param adaptable the object which should be used as the basis for value resolution. |
| * @param name the injection point name (may be only {@code null} if injector implements the {@link AcceptsNullName} interface, otherwise never {@code null}) |
| * @param declaredType the declared type of the injection point |
| * @param element the injection point itself |
| * @param callbackRegistry a registry object to register a callback object which will be |
| * invoked when the adapted object is disposed. |
| * |
| * @return the value to be injected or null if no value could be resolved |
| */ |
| @Nullable Object getValue(@NotNull Object adaptable, String name, @NotNull Type declaredType, @NotNull AnnotatedElement element, @NotNull DisposalCallbackRegistry callbackRegistry); |
| } |