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/**
* Copyright (C) 2011 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 com.google.inject.internal;
import static com.google.common.base.Preconditions.checkNotNull;
import com.google.inject.spi.Dependency;
import com.google.inject.spi.ProviderInstanceBinding;
/**
* Adapts {@link ProviderInstanceBinding} providers, ensuring circular proxies
* fail (or proxy) properly.
*
* @author sameb@google.com (Sam Berlin)
*/
final class InternalFactoryToInitializableAdapter<T> extends ProviderInternalFactory<T> {
private final ProvisionListenerStackCallback<T> provisionCallback;
private final Initializable<? extends javax.inject.Provider<? extends T>> initializable;
public InternalFactoryToInitializableAdapter(
Initializable<? extends javax.inject.Provider<? extends T>> initializable,
Object source, ProvisionListenerStackCallback<T> provisionCallback) {
super(source);
this.provisionCallback = checkNotNull(provisionCallback, "provisionCallback");
this.initializable = checkNotNull(initializable, "provider");
}
public T get(Errors errors, InternalContext context, Dependency<?> dependency, boolean linked)
throws ErrorsException {
return circularGet(initializable.get(errors), errors, context, dependency,
provisionCallback);
}
@Override
protected T provision(javax.inject.Provider<? extends T> provider, Errors errors,
Dependency<?> dependency, ConstructionContext<T> constructionContext) throws ErrorsException {
try {
return super.provision(provider, errors, dependency, constructionContext);
} catch(RuntimeException userException) {
throw errors.withSource(source).errorInProvider(userException).toException();
}
}
@Override public String toString() {
return initializable.toString();
}
}
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