org.elasticsearch.common.inject.ModulesBuilder Maven / Gradle / Ivy
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* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch 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.elasticsearch.common.inject;
import com.google.common.collect.Lists;
import java.util.Iterator;
import java.util.List;
/**
*
*/
public class ModulesBuilder implements Iterable {
private final List modules = Lists.newArrayList();
public ModulesBuilder add(Module... modules) {
for (Module module : modules) {
add(module);
}
return this;
}
public ModulesBuilder add(Module module) {
modules.add(module);
if (module instanceof SpawnModules) {
Iterable spawned = ((SpawnModules) module).spawnModules();
for (Module spawn : spawned) {
add(spawn);
}
}
return this;
}
@Override
public Iterator iterator() {
return modules.iterator();
}
public Injector createInjector() {
Modules.processModules(modules);
Injector injector = Guice.createInjector(modules);
Injectors.cleanCaches(injector);
// in ES, we always create all instances as if they are eager singletons
// this allows for considerable memory savings (no need to store construction info) as well as cycles
((InjectorImpl) injector).readOnlyAllSingletons();
return injector;
}
public Injector createChildInjector(Injector injector) {
Modules.processModules(modules);
Injector childInjector = injector.createChildInjector(modules);
Injectors.cleanCaches(childInjector);
// in ES, we always create all instances as if they are eager singletons
// this allows for considerable memory savings (no need to store construction info) as well as cycles
((InjectorImpl) childInjector).readOnlyAllSingletons();
return childInjector;
}
}