001/* 002 * Copyright (c) 2006-2011 Nuxeo SA (http://nuxeo.com/) and others. 003 * 004 * All rights reserved. This program and the accompanying materials 005 * are made available under the terms of the Eclipse Public License v1.0 006 * which accompanies this distribution, and is available at 007 * http://www.eclipse.org/legal/epl-v10.html 008 * 009 * Contributors: 010 * bstefanescu 011 */ 012package org.nuxeo.ecm.automation.core.operations.blob; 013 014import org.nuxeo.ecm.automation.core.Constants; 015import org.nuxeo.ecm.automation.core.annotations.Operation; 016import org.nuxeo.ecm.automation.core.annotations.OperationMethod; 017import org.nuxeo.ecm.automation.core.annotations.Param; 018import org.nuxeo.ecm.automation.core.collectors.BlobCollector; 019import org.nuxeo.ecm.core.api.Blob; 020import org.nuxeo.ecm.core.api.Blobs; 021import org.nuxeo.ecm.core.api.DocumentModel; 022import org.nuxeo.ecm.core.api.blobholder.BlobHolder; 023 024/** 025 * Get document blob inside the file:content property 026 * 027 * @author <a href="mailto:bs@nuxeo.com">Bogdan Stefanescu</a> 028 * @author tiry 029 */ 030@Operation(id = GetDocumentBlob.ID, category = Constants.CAT_BLOB, label = "Get Document File", description = "Gets a file attached to the input document. The file location is specified using an xpath to the blob property of the document. Returns the file.", aliases = { "Blob.Get" }) 031public class GetDocumentBlob { 032 033 public static final String ID = "Document.GetBlob"; 034 035 @Param(name = "xpath", required = false, values = "file:content") 036 protected String xpath = "file:content"; 037 038 @OperationMethod(collector = BlobCollector.class) 039 public Blob run(DocumentModel doc) { 040 Blob blob = (Blob) doc.getPropertyValue(xpath); 041 if (blob == null) { 042 BlobHolder bh = doc.getAdapter(BlobHolder.class); 043 if (bh != null) { 044 blob = bh.getBlob(); 045 } 046 } 047 // cannot return null since it may break the next operation 048 if (blob == null) { // create an empty blob 049 blob = Blobs.createBlob(""); 050 blob.setFilename(doc.getName() + ".null"); 051 } 052 return blob; 053 } 054 055}