org.apache.jackrabbit.oak.plugins.blob.BlobStoreBlob Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF 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.apache.jackrabbit.oak.plugins.blob;
import java.io.IOException;
import java.io.InputStream;
import javax.annotation.CheckForNull;
import javax.annotation.Nonnull;
import org.apache.jackrabbit.oak.spi.blob.BlobStore;
import org.apache.jackrabbit.oak.api.Blob;
/**
* A blob implementation.
*/
public class BlobStoreBlob implements Blob {
private final BlobStore blobStore;
private final String blobId;
public BlobStoreBlob(BlobStore blobStore, String blobId) {
this.blobStore = blobStore;
this.blobId = blobId;
}
@Override
@Nonnull
public InputStream getNewStream() {
try {
return blobStore.getInputStream(blobId);
} catch (IOException e) {
throw new RuntimeException("Error occurred while obtaining " +
"InputStream for blobId ["+ blobId +"]",e);
}
}
@Override
public long length() {
try {
return blobStore.getBlobLength(blobId);
} catch (IOException e) {
throw new IllegalArgumentException("Invalid blob id: " + blobId, e);
}
}
@Override @CheckForNull
public String getReference() {
return blobStore.getReference(blobId);
}
@Override
public String getContentIdentity() {
return blobId;
}
public String getBlobId() {
return blobId;
}
public BlobStore getBlobStore() {
return blobStore;
}
//------------------------------------------------------------< Object >--
@Override
public String toString() {
return blobId;
}
@Override
public int hashCode() {
return blobId.hashCode();
}
@Override
public boolean equals(Object other) {
if (this == other) {
return true;
}
if (other instanceof BlobStoreBlob) {
BlobStoreBlob b = (BlobStoreBlob) other;
// theoretically, the data could be the same
// even if the id is different
return b.blobId.equals(blobId);
}
return false;
}
}