org.elasticsearch.common.inject.BoundProviderFactory 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.BindingProcessor.CreationListener;
import org.elasticsearch.common.inject.internal.Errors;
import org.elasticsearch.common.inject.internal.ErrorsException;
import org.elasticsearch.common.inject.internal.InternalContext;
import org.elasticsearch.common.inject.internal.InternalFactory;
import org.elasticsearch.common.inject.spi.Dependency;
/**
* Delegates to a custom factory which is also bound in the injector.
*/
class BoundProviderFactory implements InternalFactory, CreationListener {
private final InjectorImpl injector;
final Key> providerKey;
final Object source;
private InternalFactory> providerFactory;
BoundProviderFactory(
InjectorImpl injector,
Key> providerKey,
Object source) {
this.injector = injector;
this.providerKey = providerKey;
this.source = source;
}
public void notify(Errors errors) {
try {
providerFactory = injector.getInternalFactory(providerKey, errors.withSource(source));
} catch (ErrorsException e) {
errors.merge(e.getErrors());
}
}
public T get(Errors errors, InternalContext context, Dependency dependency)
throws ErrorsException {
errors = errors.withSource(providerKey);
Provider provider = providerFactory.get(errors, context, dependency);
try {
return errors.checkForNull(provider.get(), source, dependency);
} catch (RuntimeException userException) {
throw errors.errorInProvider(userException).toException();
}
}
@Override
public String toString() {
return providerKey.toString();
}
}