Java tutorial
/* * 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.util; import java.io.IOException; import java.io.InputStream; import com.google.common.io.ByteSource; import org.apache.jackrabbit.oak.api.Blob; public final class BlobByteSource extends ByteSource { private final Blob blob; public BlobByteSource(Blob blob) { this.blob = blob; } @Override public InputStream openStream() throws IOException { return blob.getNewStream(); } @Override public long size() throws IOException { return blob.length(); } @Override public boolean isEmpty() throws IOException { return blob.length() == 0; } }