001/* 002 * (C) Copyright 2015 Nuxeo SA (http://nuxeo.com/) and others. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 * 016 * Contributors: 017 * Florent Guillaume 018 */ 019package org.nuxeo.ecm.core.blob; 020 021import org.nuxeo.ecm.core.api.impl.blob.AbstractBlob; 022 023import java.io.File; 024 025/** 026 * Simple managed blob implementation holding just a key and delegating to its provider for implementation. 027 * 028 * @since 7.2 029 */ 030public class SimpleManagedBlob extends AbstractBlob implements ManagedBlob { 031 032 private static final long serialVersionUID = 1L; 033 034 public final String blobProviderId; 035 036 public final String key; 037 038 public Long length; 039 040 public SimpleManagedBlob(String blobProviderId, BlobInfo blobInfo) { 041 this.blobProviderId = blobProviderId; 042 key = blobInfo.key; 043 setMimeType(blobInfo.mimeType); 044 setEncoding(blobInfo.encoding); 045 setFilename(blobInfo.filename); 046 setDigest(blobInfo.digest); 047 length = blobInfo.length; 048 } 049 050 public SimpleManagedBlob(BlobInfo blobInfo) { 051 this(blobProviderIdFromKey(blobInfo.key), blobInfo); 052 } 053 054 @Override 055 public String getProviderId() { 056 return blobProviderId; 057 } 058 059 @Override 060 public String getKey() { 061 return key; 062 } 063 064 protected static String blobProviderIdFromKey(String key) { 065 int colon = key.indexOf(':'); 066 if (colon < 0) { 067 // no prefix 068 throw new IllegalArgumentException("Invalid managed blob key: " + key); 069 } 070 return key.substring(0, colon); 071 } 072 073 @Override 074 public File getFile() { 075 return ManagedBlob.super.getFile(); 076 } 077 078 @Override 079 public long getLength() { 080 return length == null ? -1 : length.longValue(); 081 } 082 083}