/**
* Licensed to jclouds, Inc. (jclouds) under one or more
* contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. jclouds licenses this file
* to you 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.jclouds.blobstore.config;
import javax.inject.Inject;
import javax.inject.Provider;
import org.jclouds.blobstore.domain.Blob;
import org.jclouds.blobstore.domain.MutableBlobMetadata;
import org.jclouds.blobstore.domain.internal.BlobImpl;
import com.google.inject.AbstractModule;
import com.google.inject.Provides;
import com.google.inject.Scopes;
/**
* Configures the domain object mappings needed for all Blob implementations
*
* @author Adrian Cole
*/
public class BlobStoreObjectModule extends AbstractModule {
/**
* explicit factories are created here as it has been shown that Assisted Inject is extremely
* inefficient. http://code.google.com/p/google-guice/issues/detail?id=435
*/
@Override
protected void configure() {
bind(Blob.Factory.class).to(BlobFactory.class).in(Scopes.SINGLETON);
}
private static class BlobFactory implements Blob.Factory {
@Inject
Provider<MutableBlobMetadata> metadataProvider;
public Blob create(MutableBlobMetadata metadata) {
return new BlobImpl(metadata != null ? metadata : metadataProvider.get());
}
}
@Provides
Blob provideBlob(Blob.Factory factory) {
return factory.create(null);
}
}