/*
* 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 java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
public class ModulesBuilder implements Iterable<Module> {
private final List<Module> modules = new ArrayList<>();
public ModulesBuilder add(Module... newModules) {
for (Module module : newModules) {
modules.add(module);
}
return this;
}
@Override
public Iterator<Module> iterator() {
return modules.iterator();
}
public Injector createInjector() {
Injector injector = Guice.createInjector(modules);
((InjectorImpl) injector).clearCache();
// 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;
}
}