/**
* 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.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;
/**
* @author crazybob@google.com (Bob Lee)
*/
class ProviderToInternalFactoryAdapter<T> implements Provider<T> {
private final InjectorImpl injector;
private final InternalFactory<? extends T> internalFactory;
public ProviderToInternalFactoryAdapter(InjectorImpl injector,
InternalFactory<? extends T> internalFactory) {
this.injector = injector;
this.internalFactory = internalFactory;
}
public T get() {
final Errors errors = new Errors();
try {
T t = injector.callInContext(new ContextualCallable<T>() {
public T call(InternalContext context) throws ErrorsException {
Dependency dependency = context.getDependency();
return internalFactory.get(errors, context, dependency);
}
});
errors.throwIfNewErrors(0);
return t;
} catch (ErrorsException e) {
throw new ProvisionException(errors.merge(e.getErrors()).getMessages());
}
}
@Override public String toString() {
return internalFactory.toString();
}
}