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/*
 * Copyright (C) 2008 Google Inc.
 *
 * 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 com.google.inject.spi;

import static com.google.common.base.Preconditions.checkNotNull;

import com.google.inject.Binder;
import com.google.inject.ConfigurationException;
import java.util.Set;

/**
 * A request to inject the static fields and methods of a type. Requests are created explicitly in a
 * module using {@link com.google.inject.Binder#requestStaticInjection(Class[])
 * requestStaticInjection()} statements:
 *
 * 
 *     requestStaticInjection(MyLegacyService.class);
* * @author [email protected] (Jesse Wilson) * @since 2.0 */ public final class StaticInjectionRequest implements Element { private final Object source; private final Class type; StaticInjectionRequest(Object source, Class type) { this.source = checkNotNull(source, "source"); this.type = checkNotNull(type, "type"); } @Override public Object getSource() { return source; } public Class getType() { return type; } /** * Returns the static methods and fields of {@code type} that will be injected to fulfill this * request. * * @return a possibly empty set of injection points. The set has a specified iteration order. All * fields are returned and then all methods. Within the fields, supertype fields are returned * before subtype fields. Similarly, supertype methods are returned before subtype methods. * @throws ConfigurationException if there is a malformed injection point on {@code type}, such as * a field with multiple binding annotations. The exception's {@link * ConfigurationException#getPartialValue() partial value} is a {@code Set} of * the valid injection points. */ public Set getInjectionPoints() throws ConfigurationException { return InjectionPoint.forStaticMethodsAndFields(type); } @Override public void applyTo(Binder binder) { binder.withSource(getSource()).requestStaticInjection(type); } @Override public T acceptVisitor(ElementVisitor visitor) { return visitor.visit(this); } }




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