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/*
* SonarQube
* Copyright (C) 2009-2025 SonarSource SA
* mailto:info AT sonarsource DOT com
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
package org.sonar.db;
import java.util.ArrayList;
import java.util.List;
import java.util.Optional;
import java.util.function.Supplier;
import org.sonar.core.platform.Container;
import org.sonar.core.platform.StartableBeanPostProcessor;
import org.springframework.beans.factory.NoSuchBeanDefinitionException;
import org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory;
import org.springframework.context.support.GenericApplicationContext;
/**
* A fast(er) Spring container. It doesn't support several things that are supported in
* {@link org.sonar.core.platform.SpringComponentContainer}, such as:
* <ul>
* <li>Adding extensions</li>
* <li>Use of annotations</li>
* <li>Adding duplicate components from different Classloaders</li>
* <li>Hierarchy of container</li>
* <li>Different initialization strategies</li>
* </ul>
*/
public class FastSpringContainer implements Container {
private final GenericApplicationContext context = new GenericApplicationContext();
public FastSpringContainer() {
((AbstractAutowireCapableBeanFactory) context.getBeanFactory()).setParameterNameDiscoverer(null);
add(StartableBeanPostProcessor.class);
}
@Override
public Container add(Object... objects) {
for (Object o : objects) {
if (o instanceof Class) {
Class<?> clazz = (Class<?>) o;
context.registerBean(clazz.getName(), clazz);
} else {
registerInstance(o);
}
}
return this;
}
public void start() {
context.refresh();
}
private <T> void registerInstance(T instance) {
Supplier<T> supplier = () -> instance;
Class<T> clazz = (Class<T>) instance.getClass();
context.registerBean(clazz.getName(), clazz, supplier);
}
@Override
public <T> T getComponentByType(Class<T> type) {
try {
return context.getBean(type);
} catch (Exception t) {
throw new IllegalStateException("Unable to load component " + type, t);
}
}
@Override public <T> Optional<T> getOptionalComponentByType(Class<T> type) {
try {
return Optional.of(context.getBean(type));
} catch (NoSuchBeanDefinitionException t) {
return Optional.empty();
}
}
@Override
public <T> List<T> getComponentsByType(Class<T> type) {
try {
return new ArrayList<>(context.getBeansOfType(type).values());
} catch (Exception t) {
throw new IllegalStateException("Unable to load components " + type, t);
}
}
@Override
public Container getParent() {
return null;
}
}
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