| /* |
| * 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.axiom.blob; |
| |
| import java.io.File; |
| |
| /** |
| * Contains factory methods to create various types of blobs. |
| */ |
| public final class Blobs { |
| private Blobs() {} |
| |
| /** |
| * Create a blob from a byte array. |
| * |
| * @param data the byte array |
| * @return the blob |
| */ |
| public static Blob createBlob(byte[] data) { |
| return new ByteArrayBlob(data); |
| } |
| |
| /** |
| * Create a {@link MemoryBlob} instance. |
| * |
| * @return the blob |
| */ |
| public static MemoryBlob createMemoryBlob() { |
| return new MemoryBlobImpl(); |
| } |
| |
| /** |
| * Create an {@link OverflowableBlob}. |
| * |
| * @param threshold |
| * the threshold above which data is transferred to the overflow blob |
| * @param overflowBlobFactory |
| * the factory that will be used to create the overflow blob |
| * @return the blob |
| */ |
| public static OverflowableBlob createOverflowableBlob(int threshold, WritableBlobFactory<?> overflowBlobFactory) { |
| int numberOfChunks = Math.max(16, Math.min(1, threshold/4096)); |
| int chunkSize = threshold/numberOfChunks; |
| return new OverflowableBlobImpl(numberOfChunks, chunkSize, overflowBlobFactory); |
| } |
| |
| /** |
| * Create an {@link OverflowableBlob} that overflows to a temporary file. Temporary files are |
| * created using {@link File#createTempFile(String, String, File)}. |
| * |
| * @param threshold |
| * the overflow threshold |
| * @param tempPrefix |
| * the prefix to be used in generating the name of the temporary file |
| * @param tempSuffix |
| * the suffix to be used in generating the name of the temporary file |
| * @param tempDirectory |
| * the directory in which the temporary file is to be created, or <code>null</code> |
| * if the default temporary directory is to be used |
| * @return the blob |
| */ |
| public static OverflowableBlob createOverflowableBlob(int threshold, String tempPrefix, |
| String tempSuffix, File tempDirectory) { |
| return createOverflowableBlob(threshold, |
| new TempFileBlobFactory(tempPrefix, tempSuffix, tempDirectory)); |
| } |
| } |