/*
* Copyright 2003-2015 JetBrains s.r.o.
*
* 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 jetbrains.mps.persistence;
import com.intellij.openapi.application.ApplicationManager;
import com.intellij.openapi.components.ApplicationComponent;
import jetbrains.mps.extapi.persistence.datasource.DataSourceFactoryRule;
import jetbrains.mps.extapi.persistence.datasource.DataSourceFactoryRuleService;
import org.apache.log4j.LogManager;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.mps.annotations.Immutable;
import org.jetbrains.mps.annotations.Internal;
import org.picocontainer.PicoContainer;
import java.util.List;
import java.util.concurrent.CopyOnWriteArrayList;
/**
* A platform-level extension point to client custom data source factories
* delegates to the {@link DataSourceFactoryRuleService}
*
* @author apyshkin
*/
@Internal
@Immutable
public final class DataSourceFactoryRuleRegistrar implements ApplicationComponent {
private final List<DataSourceFactoryRule> myRegisteredRules = new CopyOnWriteArrayList<>();
private final PicoContainer PICO_CONTAINER = ApplicationManager.getApplication().getPicoContainer();
private final DataSourceFactoryRuleService SERVICE = DataSourceFactoryRuleService.getInstance();
public DataSourceFactoryRuleRegistrar() {
}
@Override
public void initComponent() {
for (DataSourceFactoryRuleProvider provider : DataSourceFactoryRuleProvider.EP_DATA_SOURCE_FACTORY.getExtensions()) {
try {
DataSourceFactoryRule factoryRule = provider.instantiate(provider.getImplementationClass(), PICO_CONTAINER);
myRegisteredRules.add(factoryRule);
register(factoryRule);
} catch (ClassNotFoundException e) {
String message = String.format("Failed to load %s in the plugin %s",
provider.getImplementationClass(),
provider.getPluginDescriptor().getPluginId());
LogManager.getLogger(DataSourceFactoryRuleRegistrar.class).error(message, e);
}
}
}
private void register(@NotNull DataSourceFactoryRule rule) {
myRegisteredRules.add(rule);
SERVICE.register(rule);
}
private void unregister(@NotNull DataSourceFactoryRule rule) {
SERVICE.unregister(rule);
myRegisteredRules.remove(rule);
}
@Override
public void disposeComponent() {
myRegisteredRules.forEach(this::unregister);
}
@NotNull
@Override
public String getComponentName() {
return "DataSourceFactoryRegistrar";
}
}