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jclouds components to access blobstore

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/**
 * 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.domain;

import java.net.URI;

import org.jclouds.blobstore.domain.internal.BlobMetadataImpl;
import org.jclouds.io.ContentMetadata;
import org.jclouds.javax.annotation.Nullable;

import com.google.inject.ImplementedBy;

/**
 * System and user Metadata for the {@link Blob}.
 * 
 * @author Adrian Cole
 */
@ImplementedBy(BlobMetadataImpl.class)
public interface BlobMetadata extends StorageMetadata {
   /**
    * If the blob is publicly readable, what is the URI one can access it at.
    * 
    * @return uri, or null, if not readable
    */
   @Nullable
   URI getPublicUri();
   
   /**
    * 
    * @return the container holding this blob
    */
   @Nullable
   String getContainer();

   ContentMetadata getContentMetadata();
}