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.plugins.tika; import java.io.IOException; import java.io.InputStream; import javax.annotation.Nullable; import com.google.common.io.ByteSource; import org.apache.jackrabbit.oak.spi.blob.BlobStore; /** * Avoiding use of BlobByteSource to avoid concurrent access to NodeState */ class BlobStoreByteSource extends ByteSource { private final BlobStore blobStore; private final String blobId; private final Long size; BlobStoreByteSource(BlobStore blobStore, String blobId, @Nullable Long size) { this.blobStore = blobStore; this.blobId = blobId; this.size = size; } BlobStoreByteSource(BlobStore blobStore, String blobId) { this(blobStore, blobId, null); } @Override public InputStream openStream() throws IOException { return blobStore.getInputStream(blobId); } @Override public long size() throws IOException { if (size != null) { return size; } return blobStore.getBlobLength(blobId); } }