org.elasticsearch.common.inject.AbstractModule Maven / Gradle / Ivy
/**
* Copyright (C) 2006 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 org.elasticsearch.common.inject;
import org.elasticsearch.common.inject.binder.AnnotatedBindingBuilder;
import org.elasticsearch.common.inject.binder.AnnotatedConstantBindingBuilder;
import org.elasticsearch.common.inject.binder.LinkedBindingBuilder;
import org.elasticsearch.common.inject.matcher.Matcher;
import org.elasticsearch.common.inject.spi.Message;
import org.elasticsearch.common.inject.spi.TypeConverter;
import org.elasticsearch.common.inject.spi.TypeListener;
import java.lang.annotation.Annotation;
import static com.google.common.base.Preconditions.checkNotNull;
import static com.google.common.base.Preconditions.checkState;
/**
* A support class for {@link Module}s which reduces repetition and results in
* a more readable configuration. Simply extend this class, implement {@link
* #configure()}, and call the inherited methods which mirror those found in
* {@link Binder}. For example:
*
*
* public class MyModule extends AbstractModule {
* protected void configure() {
* bind(Service.class).to(ServiceImpl.class).in(Singleton.class);
* bind(CreditCardPaymentService.class);
* bind(PaymentService.class).to(CreditCardPaymentService.class);
* bindConstant().annotatedWith(Names.named("port")).to(8080);
* }
* }
*
*
* @author [email protected] (Bob Lee)
*/
public abstract class AbstractModule implements Module {
Binder binder;
public final synchronized void configure(Binder builder) {
checkState(this.binder == null, "Re-entry is not allowed.");
this.binder = checkNotNull(builder, "builder");
try {
configure();
} finally {
this.binder = null;
}
}
/**
* Configures a {@link Binder} via the exposed methods.
*/
protected abstract void configure();
/**
* Gets direct access to the underlying {@code Binder}.
*/
protected Binder binder() {
return binder;
}
/**
* @see Binder#bindScope(Class, Scope)
*/
protected void bindScope(Class scopeAnnotation,
Scope scope) {
binder.bindScope(scopeAnnotation, scope);
}
/**
* @see Binder#bind(Key)
*/
protected LinkedBindingBuilder bind(Key key) {
return binder.bind(key);
}
/**
* @see Binder#bind(TypeLiteral)
*/
protected AnnotatedBindingBuilder bind(TypeLiteral typeLiteral) {
return binder.bind(typeLiteral);
}
/**
* @see Binder#bind(Class)
*/
protected AnnotatedBindingBuilder bind(Class clazz) {
return binder.bind(clazz);
}
/**
* @see Binder#bindConstant()
*/
protected AnnotatedConstantBindingBuilder bindConstant() {
return binder.bindConstant();
}
/**
* @see Binder#install(Module)
*/
protected void install(Module module) {
binder.install(module);
}
/**
* @see Binder#addError(String, Object[])
*/
protected void addError(String message, Object... arguments) {
binder.addError(message, arguments);
}
/**
* @see Binder#addError(Throwable)
*/
protected void addError(Throwable t) {
binder.addError(t);
}
/**
* @see Binder#addError(Message)
* @since 2.0
*/
protected void addError(Message message) {
binder.addError(message);
}
/**
* @see Binder#requestInjection(Object)
* @since 2.0
*/
protected void requestInjection(Object instance) {
binder.requestInjection(instance);
}
/**
* @see Binder#requestStaticInjection(Class[])
*/
protected void requestStaticInjection(Class... types) {
binder.requestStaticInjection(types);
}
/**
* Adds a dependency from this module to {@code key}. When the injector is
* created, Guice will report an error if {@code key} cannot be injected.
* Note that this requirement may be satisfied by implicit binding, such as
* a public no-arguments constructor.
*
* @since 2.0
*/
protected void requireBinding(Key key) {
binder.getProvider(key);
}
/**
* Adds a dependency from this module to {@code type}. When the injector is
* created, Guice will report an error if {@code type} cannot be injected.
* Note that this requirement may be satisfied by implicit binding, such as
* a public no-arguments constructor.
*
* @since 2.0
*/
protected void requireBinding(Class type) {
binder.getProvider(type);
}
/**
* @see Binder#getProvider(Key)
* @since 2.0
*/
protected Provider getProvider(Key key) {
return binder.getProvider(key);
}
/**
* @see Binder#getProvider(Class)
* @since 2.0
*/
protected Provider getProvider(Class type) {
return binder.getProvider(type);
}
/**
* @see Binder#convertToTypes
* @since 2.0
*/
protected void convertToTypes(Matcher> typeMatcher,
TypeConverter converter) {
binder.convertToTypes(typeMatcher, converter);
}
/**
* @see Binder#currentStage()
* @since 2.0
*/
protected Stage currentStage() {
return binder.currentStage();
}
/**
* @see Binder#getMembersInjector(Class)
* @since 2.0
*/
protected MembersInjector getMembersInjector(Class type) {
return binder.getMembersInjector(type);
}
/**
* @see Binder#getMembersInjector(TypeLiteral)
* @since 2.0
*/
protected MembersInjector getMembersInjector(TypeLiteral type) {
return binder.getMembersInjector(type);
}
/**
* @see Binder#bindListener(org.elasticsearch.common.inject.matcher.Matcher,
* org.elasticsearch.common.inject.spi.TypeListener)
* @since 2.0
*/
protected void bindListener(Matcher> typeMatcher,
TypeListener listener) {
binder.bindListener(typeMatcher, listener);
}
}