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eclipse / osbp / org.eclipse.osbp.blob / refs/heads/master / . / org.eclipse.osbp.blob / src / org / eclipse / osbp / blob / service / BlobService.java
blob: 74e2d4fb3b773d999775026552cf6572a1ad0e9e [file] [log] [blame]
/**
*
* Copyright (c) 2011, 2017 - Loetz GmbH&Co.KG (69115 Heidelberg, Germany)
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* Christophe Loetz (Loetz GmbH&Co.KG) - initial implementation
* Jose Dominguez (Compex Systemhaus GmbH) - ongoing development
*/
package org.eclipse.osbp.blob.service;
import java.awt.Image;
import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.sql.Blob;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import javax.imageio.ImageIO;
import javax.xml.bind.DatatypeConverter;
import org.apache.commons.compress.utils.IOUtils;
import org.eclipse.osbp.blob.component.BlobEvent;
import org.eclipse.osbp.blob.component.BlobUploadComponent;
import org.eclipse.osbp.blob.dtos.BlobDto;
import org.eclipse.osbp.blob.dtos.BlobMappingDto;
import org.eclipse.osbp.dsl.dto.lib.impl.DtoServiceAccess;
import org.eclipse.osbp.jpa.services.Query;
import org.eclipse.osbp.jpa.services.filters.LAnd;
import org.eclipse.osbp.jpa.services.filters.LCompare;
import org.eclipse.osbp.runtime.common.filter.IDTOService;
import org.eclipse.osbp.runtime.common.filter.IQuery;
import org.eclipse.osbp.ui.api.customfields.IBlobEvent;
import org.eclipse.osbp.ui.api.customfields.IBlobService;
import org.eclipse.osbp.ui.api.customfields.IBlobTyping;
import org.eclipse.osbp.ui.api.customfields.IBlobUploadEventListener;
import org.osgi.service.component.annotations.Component;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.vaadin.server.StreamResource;
import com.vaadin.server.StreamResource.StreamSource;
import com.vaadin.shared.ui.label.ContentMode;
import com.vaadin.ui.Label;
/**
* Provides and persist blob data from and into a database via JPA. For images
* different sizes are calculated and stored that can be retrieved later to get
* better performance
*
* @author dominguez
*
*/
@Component
public class BlobService implements IBlobService {
private IDTOService<BlobMappingDto> dtoBlobMappingDtoService;
private Logger log = LoggerFactory.getLogger(BlobService.class);
private List<IBlobUploadEventListener> listeners = new ArrayList<>();
private BlobTypingAPI blobAPI;
private static final String DEFAULT_EXCEL_ICON = 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private static final String DEFAULT_WORD_ICON = "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";
private static final String DEFAULT_PDF_ICON = 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private static final String DEFAULT_IMAGE = "iVBORw0KGgoAAAANSUhEUgAAACQAAAAhCAYAAACxzQkrAAAABmJLR0QA/wD/AP+gvaeTAAAACXBI WXMAAAsTAAALEwEAmpwYAAAAB3RJTUUH4gECDykfwiMkMQAACalJREFUWMOtl2l0k1Uax//vmoQm pQulm21KC7ZlRDZBdtQKuA0yjsczI8czeJwPjjNqadOkSbovSZqkLYjiNq7jYVDEGY8OOgKi7Eu1 gmKhtJQuNCUpbbO/Td5lPrRlwr7oPeeee89773Of33vv/7kLgV+Y6hutKFyrha3eQoVCoSkymewv NEOvJECoAQzwPP9lOBS2Rymjjj3/13zRVm9GUaH+quPRN+M8cjB7Qx0IgkDhWi0+3LKJaG9v35Ca mvpsmjqNEHgBgsCDJMl4mqZXd3Z2rT7bc7ahf+CYZkLcndK1fNA3DmNBUWEx6mymPIIgKE2B7qux tjNnzhyYOjX37sSkJDQdaQLHca0AdgOYLJfL75m/cB5kDJv/6quf9ABovJYf4kZgrHYLtJpiWO3m e1Qq1S5BEBAMctlFhbrWWnPVhqysrL+p1Wrs2bOnQ5KkP+uKDF+P2daaq/LkcsXW+5ffN373N3va PR7PXZJEDJUYSm8dCADWb3hJ4fe7O5YvX57Y3NyMoSF3YjAQSE5KTtqzePFi1bYvtrUHg8FlJfry jhpTJZRKJfJfKAQA1JgqLblTc3UA0HqydZ5eV3LoFy+ZxzNQPXPmzImBQBBOp7OcIAinTCF/Zc6c uaqDBw+KwUCwtsRQ3gEAJYbyi2wZhnmvr69Pl5OTA4Zh5gC4KhB5IzBVNeVTJkyY8NS0O6YTTU1H zgiCsJGiqGW3pd72uNfnRW9v75ESQ/k7V7NnGMYrCiJoioYkSYpr+SKvrR0zAECuUBjn3T1/4t69 u+H3+xvnzM0ZFEVx87Rp03CipQUMwzw2FnmRqWGdDQDAcdzsmJgYcNwwRFE8dUtAdTYTtBo9rHbT 3IT4hD+JkoSesz2nSo0VLzUdOdk4c+asOK/HC5fLZdBq9L31jXXQFOguGqMgvwgAIEnii1lZkzE4 OIBQKHTolqNs/YZ61u8Pnlr16O/SjzQdxrlzfVMDgYCQkpyyf+VvV8Vv2vxBm9/vWyiTyZ1azZU3 u4rq0uXq9IxPlyxZKt+6dcs2nud/rxyn5F54Ye3Ni3pgYFC/cMGitHAojJ6ebqtRX9ZitZs/WLrk 3vidu3bC7/c1lhornVfbREOhMMuyrO7+vGXyr7Z/OcwNc6+WGSu5W1qyGlNFRkLCxGdmz5pDfP3N jh5RFF+x2s3zU5JTVnMch87OjpZSY+XGS+1qTVWw2kd2dJqmH8nJzr2vq6sTvb29e8qMlZ9fL4Au A7KNClnGyovmzJ6btnPXDni9no0lhvIuXuC3zJgxC981N4FhmJWR/WvMlWtMlupnjIYyaDV61Dda YxiGeT8nOxfNzd+HFQrFk1cS/nUOypGosNvNs19/c6N0uOmwZKu3dIyGvvk/2z6TDhzcL9VaqqvG hD8KteL9f7wjvfnW61KdzTQfAKpNFVu/+XaXtH3HV5LFWrsGACx1NddlIC6fIRvBC8Nt9yzNyzzZ 2gKns2/G8PCwJzY2bu8jDz2a8q9PP+70+/1LWJmsS1tYjDq7iaVIqn9Z3grVwcP74fV6UwIBf1ZS UvIXDz3wsHLzR/88wnHcfTKZzFdUWHxdoMtEHQh68nNz75gkCDwcjt7X9LqSo1a7+Y0Zd85K2bd/ N7xe78tlJZVdY/25YHDd7FlzVa5+FwYHB7XFWqPDVm95a9H8JcodO7cLfr/fVl5a5bvRVbpohkyW qqRx45T78u5dlrl955fngsHgEpZl6WhV9PHs23NxuOlgh1ajz7wgfHPljNjxcTuW3b8i/tPPPjke CoWWMgwzNz1NvS1hYiIOHdp/wFBcuuBmrjjkiBZGhEnTTH5W5uTMYz/+gEDQ/65RX9Ya5sNvZWRk ov10GwCsAoA664h2WIbV3DltevyBQ/vAcdz6uNg4N0mSm9PTM3D8+DGRZdnHAaDxpfobB7I3WqEr 0sNWb5mhkCt0LMOi13G2q0RfUWy21mQrZIrZCsU4DAye/1ir0R+z2s3QaQ2w2Sx5E+ITVvsDATgc Z78vNVa82X++/42sSZOjXS4nAoFAvqZA12u1m7F29NS/ISDNWi0AIBwOb1KrJ6GruxOiKD4GAALP 35uYmEy6XOcQDAY/AgCtRo+XN66jRYhb09LS0dbeCppmHq01V90VMz5mVXp6BlpPnTgqiuImW70F V9vBr7lkJkv1w7ExcVkURaN/wPUBz/PNI2cQsqKioki32+0mSaILAOob6mi32/PhpIys8R6PBz6f t1pToOuhGVqXkz01tvnodxLHcesMxaXnbySqrggkCMKC5KQU1uHo8Qu88L5RXyYCAEEQlCiKhCAI kiQhCADD4dBWdfqkx6LGKXGq7eSPgGiz2s3L4mLjH/f6vejvd31faqx491YfDWTDehsNIEWpVMLj 9XopirxwPSAI4sTQ0JAYGxsbI5fL36tvtPLpqeqV0apoHPupeYCiqD8Wa0u9ALFl4oREdHd1gmGY VZFXj5sGokhKIghAkiQQxAjGWCPLspucrr5uPswjK3PKjIz0TEoQRZw81bKPIslFRYXFx2tMFesS JyaND3JBBLlgSeFabY+t3nLh6nHTQC8+XyAA6PH5fFCposcLopANANW1VSgqLPZRFDW9+2znlvbT pwKnz7T9fM7pWCNBytMWGVpMluo7lMroJ1NTbkN3d+cJSZLeBoBb0c5FOzVJkHsdTsdwemq6or/f 9bTVbt6h1ej5hnVWFORr3QCeiDQqqzACACiKKshQT0o4faYdIT600Vhc5vilD08SAAz6sv+6hwZ/ CnIBJCUlPyEIwmuSJBEF+SNbwnOG5y56n1VV1KLOZloRHR3zNM/zOH/eddRYXLYBv0Ii/n/S102Q JKIv5/Zc6vxAP846epw0Rf+BYZhda1/UXGRkb6hbKAjC7t/kTiNPd7QhFA5laAp0nb8a0Odf/BuP PLgKdbba6RRFb1GnTZrCsiz6nA54PO7POY77EJCckkSoWJZ5UKlUPaNOy4DrvBMOR6/eqC+zKFVK0ue9cIZGPpelW5ohmqYpnuex5umnUtLV6mejo1WG+LgEKKOU8Pl8GA5xIknSZNS4cQiFQ+jr64Wrv7/x7b+/0zA05OYjnIsRpXBJXRitj/WRrgTEAJCNCpwiCIKWJElasGBe6rz5d69nWPauaGU0TdM0 GQqHJbd7SPT7/d0/t7RUfbtr9w8A2NGBIx0KAPiIb/xVvo1lKRKIGoVhIurUaFto8dJF2SnJyVMpiooJhUOco9fRsW/vgTYAzCg8Iv5avAKYcA1AIWK2LrsPERHlWCYj6mNRSUa0Rerk0ixeUkqXLNMVtfU/m12KYvwikVEAAAAASUVORK5CYII=";
private static final String DEFAULTBLOBFILENAME = "osbee.png";
private static final String DEFAULTBLOBMIMETYPE = "image/png";
private static final Map<String,String> mimeTypes = createMap();
private static Map<String,String> createMap() {
Map<String,String> myMap = new HashMap<>();
// we store the file extension as a key and the mimetype as value
myMap.put("3dm","x-world/x-3dmf");
myMap.put("3dmf","x-world/x-3dmf");
myMap.put("ai","application/postscript");
myMap.put("aif","audio/x-aiff");
myMap.put("aifc","audio/x-aiff");
myMap.put("aiff","audio/x-aiff");
myMap.put("asd","application/astound");
myMap.put("asn","application/astound");
myMap.put("au","audio/basic");
myMap.put("avi","video/x-msvideo");
myMap.put("bcpio","application/x-bcpio");
myMap.put("bin","application/octet-stream");
myMap.put("bmp","image/bmp");
myMap.put("cab","application/x-shockwave-flash");
myMap.put("cdf","application/x-netcdf");
myMap.put("chm","application/mshelp");
myMap.put("cht","audio/x-dspeeh");
myMap.put("class","application/octet-stream");
myMap.put("cod","image/cis-cod");
myMap.put("com","application/octet-stream");
myMap.put("cpio","application/x-cpio");
myMap.put("csh","application/x-csh");
myMap.put("css","text/css");
myMap.put("csv","text/comma-separated-values");
myMap.put("dcr","application/x-director");
myMap.put("dir","application/x-director");
myMap.put("doc","application/msword");
myMap.put("docx","application/vnd.openxmlformats-officedocument. wordprocessingml.document");
myMap.put("dot","application/msword");
myMap.put("dus","audio/x-dspeeh");
myMap.put("dvi","application/x-dvi");
myMap.put("dwf","drawing/x-dwf");
myMap.put("dwg","application/acad");
myMap.put("dxf","application/dxf");
myMap.put("dxr","application/x-director");
myMap.put("eps","application/postscript");
myMap.put("es","audio/echospeech");
myMap.put("etx","text/x-setext");
myMap.put("evy","application/x-envoy");
myMap.put("exe","application/octet-stream");
myMap.put("fh4","image/x-freehand");
myMap.put("fh5","image/x-freehand");
myMap.put("fhc","image/x-freehand");
myMap.put("fif","image/fif");
myMap.put("file","application/octet-stream");
myMap.put("gif","image/gif");
myMap.put("gtar","application/x-gtar");
myMap.put("gz","application/gzip");
myMap.put("hdf","application/x-hdf");
myMap.put("hlp","application/mshelp");
myMap.put("hqx","application/mac-binhex40");
myMap.put("htm","text/html");
myMap.put("html","text/html");
myMap.put("ico","image/x-icon");
myMap.put("ief","image/ief");
myMap.put("ini","application/octet-stream");
myMap.put("jpe","image/jpeg");
myMap.put("jpeg","image/jpeg");
myMap.put("jpg","image/jpeg");
myMap.put("js","application/javascript");
myMap.put("json","application/json");
myMap.put("latex","application/x-latex");
myMap.put("man","application/x-troff-man");
myMap.put("mbd","application/mbedlet");
myMap.put("mcf","image/vasa");
myMap.put("me","application/x-troff-ms");
myMap.put("mid","audio/x-midi");
myMap.put("midi","audio/x-midi");
myMap.put("mif","application/mif");
myMap.put("mov","video/quicktime");
myMap.put("movie","video/x-sgi-movie");
myMap.put("mp2","audio/x-mpeg");
myMap.put("mp3","audio/mpeg");
myMap.put("mp4","video/mp4");
myMap.put("mpe","video/mpeg");
myMap.put("mpeg","video/mpeg");
myMap.put("mpg","video/mpeg");
myMap.put("nc","application/x-netcdf");
myMap.put("nsc","application/x-nschat");
myMap.put("oda","application/oda");
myMap.put("ogg","video/ogg");
myMap.put("ogv","video/ogg");
myMap.put("pbm","image/x-portable-bitmap");
myMap.put("pdf","application/pdf");
myMap.put("pgm","image/x-portable-graymap");
myMap.put("php","application/x-httpd-php");
myMap.put("phtml","application/x-httpd-php");
myMap.put("png","image/png");
myMap.put("pnm","image/x-portable-anymap");
myMap.put("pot","application/mspowerpoint");
myMap.put("ppm","image/x-portable-pixmap");
myMap.put("pps","application/mspowerpoint");
myMap.put("ppt","application/mspowerpoint");
myMap.put("ppz","application/mspowerpoint");
myMap.put("ps","application/postscript");
myMap.put("ptlk","application/listenup");
myMap.put("qd3","x-world/x-3dmf");
myMap.put("qd3d","x-world/x-3dmf");
myMap.put("qt","video/quicktime");
myMap.put("ra","audio/x-pn-realaudio");
myMap.put("ram","audio/x-pn-realaudio");
myMap.put("ras","image/cmu-raster");
myMap.put("reg","application/force-download");
myMap.put("rgb","image/x-rgb");
myMap.put("roff","application/x-troff");
myMap.put("rpm","audio/x-pn-realaudio-plugin");
myMap.put("rtc","application/rtc");
myMap.put("rtf","text/rtf");
myMap.put("rtx","text/richtext");
myMap.put("sca","application/x-supercard");
myMap.put("sgm","text/x-sgml");
myMap.put("sgml","text/x-sgml");
myMap.put("sh","application/x-sh");
myMap.put("shar","application/x-shar");
myMap.put("shtml","text/html");
myMap.put("sit","application/x-stuffit");
myMap.put("smp","application/studiom");
myMap.put("snd","audio/basic");
myMap.put("spc","text/x-speech");
myMap.put("spl","application/futuresplash");
myMap.put("spr","application/x-sprite");
myMap.put("sprite","application/x-sprite");
myMap.put("src","application/x-wais-source");
myMap.put("stream","audio/x-qt-stream");
myMap.put("sv4cpio","application/x-sv4cpio");
myMap.put("sv4crc","application/x-sv4crc");
myMap.put("svg","image/svg+xml");
myMap.put("swf","application/x-shockwave-flash");
myMap.put("t","application/x-troff");
myMap.put("talk","text/x-speech");
myMap.put("tar","application/x-tar");
myMap.put("tbk","application/toolbook");
myMap.put("tcl","application/x-tcl");
myMap.put("tex","application/x-tex");
myMap.put("texi","application/x-texinfo");
myMap.put("texinfo","application/x-texinfo");
myMap.put("tif","image/tiff");
myMap.put("tiff","image/tiff");
myMap.put("tr","application/x-troff");
myMap.put("troff","application/x-troff-me");
myMap.put("tsi","audio/tsplayer");
myMap.put("tsp","application/dsptype");
myMap.put("tsv","text/tab-separated-values");
myMap.put("txt","text/plain");
myMap.put("ustar","application/x-ustar");
myMap.put("viv","video/vnd.vivo");
myMap.put("vivo","video/vnd.vivo");
myMap.put("vmd","application/vocaltec-media-desc");
myMap.put("vmf","application/vocaltec-media-file");
myMap.put("vox","audio/voxware");
myMap.put("vts","workbook/formulaone");
myMap.put("vtts","workbook/formulaone");
myMap.put("wav","audio/wav");
myMap.put("wbmp","image/vnd.wap.wbmp");
myMap.put("webm","video/webm");
myMap.put("wml","text/vnd.wap.wml");
myMap.put("wmlc","application/vnd.wap.wmlc");
myMap.put("wmls","text/vnd.wap.wmlscript");
myMap.put("wmlsc","application/vnd.wap.wmlscriptc");
myMap.put("wrl","x-world/x-vrml");
myMap.put("xbm","image/x-xbitmap");
myMap.put("xhtml","application/xhtml+xml");
myMap.put("xla","application/msexcel");
myMap.put("xls","application/msexcel");
myMap.put("xlsx","application/vnd.openxmlformats-officedocument. spreadsheetml.sheet");
myMap.put("xml","text/xml");
myMap.put("xpm","image/x-xpixmap");
myMap.put("xwd","image/x-windowdump");
myMap.put("z","application/x-compress");
myMap.put("zip","application/zip");
return myMap;
}
private static String getMimetype ( String ext ) {
ext = ext.toLowerCase();
return mimeTypes.containsKey(ext)?mimeTypes.get(ext):mimeTypes.get("file");
}
/**
* Inner class that extract the width and height values from the specified
* resolution string and provides them.
*
* @author dominguez
*
*/
class ImageBlobResolution {
int width;
int height;
public ImageBlobResolution(String normResolution) {
super();
this.width = 0;
this.height = 0;
String[] resArr = normResolution.split("x");
if (resArr.length == 2) {
try {
this.width = Integer.parseInt(resArr[0]);
this.height = Integer.parseInt(resArr[1]);
} catch (NumberFormatException e) {
log.error(e.getLocalizedMessage());
}
}
}
}
// ***************** Constructor ************
public BlobService() {
if (DtoServiceAccess.getService(BlobMappingDto.class) instanceof IDTOService<?>) {
dtoBlobMappingDtoService = DtoServiceAccess.getService(BlobMappingDto.class);
}
this.blobAPI = new BlobTypingAPI();
}
@Override
public void addBlobUploadListener(IBlobUploadEventListener listener) {
listeners.add(listener);
}
@Override
public void removeBlobUploadListener(IBlobUploadEventListener listener) {
listeners.remove(listener);
}
protected synchronized void notifyBlobUploadEvent(IBlobEvent event) {
for (IBlobUploadEventListener listener : listeners) {
listener.blobUploaded(event);
}
}
/**
* Encodes the byte array representation of the blob into a base64 string
* representation.
*
* @param data
* @return base64 encoded string
*/
private String encodeBase64(byte[] data) {
return DatatypeConverter.printBase64Binary(data);
}
/**
* Decodes the base 64String into a byte array
*
* @param data
* @return base64 encoded string
*/
private byte[] decodeBase64(byte[] data) {
return DatatypeConverter.parseBase64Binary(new String(data));
}
/*
* (non-Javadoc)
*
* @see
* org.eclipse.osbp.ui.api.customfields.IBlobService#createBlobMappingBlobs(
* java.io.InputStream, int)
*/
@Override
public List<Object> createBlobMappingBlobs(InputStream stream, int mimeType) throws IOException {
return createBlobMappingBlobs(stream, blobAPI.getMimeTypeContentTypeById(mimeType));
}
/*
* (non-Javadoc)
*
* @see
* org.eclipse.osbp.ui.api.customfields.IBlobService#createBlobMappingBlobs(
* java.io.InputStream, java.lang.String)
*/
@Override
public List<Object> createBlobMappingBlobs(InputStream stream, String mimeType) throws IOException {
List<Object> blobList = null;
byte[] bytes = IOUtils.toByteArray(stream);
// In case of a image blob
if (isImage(mimeType)) {
blobList = createImages(bytes, blobAPI, mimeType);
} else {
// Otherwise
blobList = createBlobList(bytes);
}
return blobList;
}
/*
* (non-Javadoc)
*
* @see
* org.eclipse.osbp.ui.api.customfields.IBlobService#createBlobMapping(java.
* io.InputStream, java.lang.String, java.lang.String)
*/
@Override
public String createBlobMapping(InputStream stream, String fileName, String mimeType) {
BlobMappingDto blobMapping = new BlobMappingDto();
blobMapping.setFileName(fileName);
if ( mimeType == null || mimeType.isEmpty() ) {
int i = fileName.lastIndexOf('.');
mimeType = getMimetype(i>0?fileName.substring(i+1):"file");
}
blobMapping.setMimeTypeId(blobAPI.getMimeTypeContentTypeId(mimeType));
try {
List<Object> blobList = createBlobMappingBlobs(stream, mimeType);
for (Object obj : blobList) {
blobMapping.addToBlobsRef((BlobDto) obj);
}
dtoBlobMappingDtoService.update(blobMapping);
IBlobEvent event = new BlobEvent(this, true, blobMapping.getId(), "", fileName);
notifyBlobUploadEvent(event);
return blobMapping.getId();
} catch (IOException e) {
log.error(e.getLocalizedMessage());
return null;
}
}
/**
* Creates for the specified image blob data by {@code byte[]} the base64
* encoded image representation and a resized copy for each of the
* predefined resolutions and send them back as a blob list ({@code List<
*
* @link Blob}>}).
*
* @param bytes
* @param blobAPI
* @param mimeType
* @throws IOException
*
*/
private List<Object> createImages(byte[] bytes, BlobTypingAPI blobAPI, String mimeType) throws IOException {
List<Object> blobList = new ArrayList<>();
for (int i = 0; i < blobAPI.getNormalizer().size(); i++) {
ImageBlobResolution imgBlobRes = new ImageBlobResolution(blobAPI.getNormalizerResolutionByListIndex(i));
// In case of resolution '0' no scaling will be done in 'getImage'
BufferedImage img = getImage(bytes, imgBlobRes.width, imgBlobRes.height);
byte[] imageBytes = imageToByteArray(img, mimeType);
blobList.add(createImageBlob(imageBytes, blobAPI.getNormalizerResolutionIdByListIndex(i)));
}
return blobList;
}
/**
* Converts a {@link BufferedImage} into a byte array of a image.
*
* @param image
* @param mimeType
* @return a converted {@link BufferedImage} to a byte array.
* @throws IOException
*/
private byte[] imageToByteArray(BufferedImage image, String mimeType) throws IOException {
ByteArrayOutputStream bos = new ByteArrayOutputStream();
String type = getFormatNameFromMimeType(mimeType);
ImageIO.write(image, type, bos);
bos.close();
return bos.toByteArray();
}
/**
* 1 Extracts the format name from the mime type definition.
*
* @param mimeType
* @return format name of the mime type definition
*/
private String getFormatNameFromMimeType(String mimeType) {
String[] mimeTypeSplit = mimeType.split("/");
return mimeTypeSplit[mimeTypeSplit.length - 1];
}
/**
* Resizes an image into the specified new width and height if they are not
* '0' and convert them from the incoming byte array to a
* {@link BufferedImage}.
*
* @param bytes
* @param newWidth
* @param newHeight
* @return a resized {@link BufferedImage} corresponding to the specified
* new width and height
* @throws IOException
*/
private BufferedImage getImage(byte[] bytes, int newWidth, int newHeight) throws IOException {
ByteArrayInputStream bis = new ByteArrayInputStream(bytes);
BufferedImage image = ImageIO.read(bis);
bis.close();
int imageType = 0;
if (containsAlphaChannel(image)) {
imageType = BufferedImage.TYPE_INT_ARGB;
} else if(containsTransparency(image)) {
imageType = BufferedImage.TYPE_INT_ARGB_PRE;
} else {
imageType = BufferedImage.TYPE_INT_RGB;
}
/*
* On resolution '0' the newWidth and newHeight is also '0', because no
* scaling is required. But on png files its displaying behaviour on a
* BIRT report differs from the behaviour on a dialog view. Creating a
* BufferedImage with defined width and height avoids this different
* displaying behaviour.
*/
if (newWidth > 0 && newHeight > 0) {
Image scaledImage = image.getScaledInstance(newWidth, newHeight, Image.SCALE_AREA_AVERAGING);
BufferedImage buffered = new BufferedImage(scaledImage.getWidth(null), scaledImage.getHeight(null), imageType);
buffered.getGraphics().drawImage(scaledImage, 0, 0, null);
return buffered;
} else {
BufferedImage buffered = new BufferedImage(image.getWidth(null), image.getHeight(null), imageType);
buffered.getGraphics().drawImage(image, 0, 0, null);
return buffered;
}
}
private static boolean containsAlphaChannel(BufferedImage image) {
return image.getColorModel().hasAlpha();
}
private static boolean containsTransparency(BufferedImage image) {
for (int i = 0; i < image.getHeight(); i++) {
for (int j = 0; j < image.getWidth(); j++) {
if (isTransparent(image, j, i)) {
return true;
}
}
}
return false;
}
public static boolean isTransparent(BufferedImage image, int x, int y) {
int pixel = image.getRGB(x, y);
return (pixel >> 24) == 0x00;
}
/**
* Creates a new {@link Blob} filled with the specified parameters.
*
* @param imageBytes
* @param fileName
* @param resolutionId
* @param mimeTypeId
* @return
*/
private BlobDto createImageBlob(byte[] imageBytes, int resolutionId) {
BlobDto blobElement = new BlobDto();
blobElement.setData(encodeBase64(imageBytes).getBytes());
blobElement.setResolutionId(resolutionId);
return blobElement;
}
/**
* Creates a new {@code List <{@link Blob}>} filled with the specified
* parameters.
*
* @param dataBytes
* @return List<Blob>: List of blob objects
*/
private List<Object> createBlobList(byte[] dataBytes) {
List<Object> blobList = new ArrayList<>();
BlobDto blobElement = new BlobDto();
blobElement.setData(dataBytes);
blobList.add(blobElement);
return blobList;
}
/**
* Provides the existing blob ({@link Blob}) from the database for a
* specified blob mapping id and a specified resolution id via JPA or
* {@code null} if no blob found.
*
* @param blobMappingId
* @param resolutionId
* @return a blob ({@link Blob}) for the specified {@code blobMappingId} and
* {@code resolutionId} or {@code null} if no blob found
*/
private BlobDto getBlobById(String blobMappingId, int resolutionId) {
if (blobMappingId != null && resolutionId >= 0) {
BlobMappingDto blobMapping = dtoBlobMappingDtoService.get(blobMappingId);
if (blobMapping != null) {
return getBlobByResolution(resolutionId, blobMapping);
}
}
return null;
}
private BlobDto getBlobByName(String blobMappingName, int resolutionId, int mimeTypeId) {
if (blobMappingName != null && resolutionId >= 0) {
IQuery query = new Query(new LAnd(new LCompare.Equal("fileName", blobMappingName),
new LCompare.Equal("mimeTypeId", mimeTypeId)));
Collection<BlobMappingDto> blobMappings = dtoBlobMappingDtoService.find(query);
if (!blobMappings.isEmpty()) {
Iterator<BlobMappingDto> iter = blobMappings.iterator();
return getBlobByResolution(resolutionId, iter.next());
}
}
return null;
}
private BlobDto getBlobByResolution(int resolutionId, BlobMappingDto blobMapping) {
for (BlobDto blob : blobMapping.getBlobsRef()) {
if (isImage(blobMapping.getMimeTypeId())) {
if (blob.getResolutionId() == resolutionId) {
return blob;
}
} else {
return blob;
}
}
return null;
}
/**
* Checks if the mime type by the specified mime type id {@code mimeTypeId}
* corresponds to an image.
*
* @param mimeTypeId
* @return boolean indicating if it is an image
*/
@Override
public boolean isImage(int mimeTypeId) {
String mimeType = blobAPI.getMimeTypeContentTypeById(mimeTypeId);
return mimeType.startsWith(IBlobTyping.IMAGE_MIME_TYPE_PREFIX);
}
/**
* Checks if the mime type by the specified mime type id {@code mimeTypeId}
* corresponds to a pdf file.
*
* @param mimeTypeId
* @return boolean indicating if it is a pdf file
*/
@Override
public boolean isPdf(int mimeTypeId) {
return mimeTypeId == IBlobTyping.PDF_MIME_TYPE_ID;
}
/**
* Checks if the mime type by the specified mime type id {@code mimeTypeId}
* corresponds to a word file.
*
* @param mimeTypeId
* @return boolean indicating if it is a word file
*/
@Override
public boolean isWord(int mimeTypeId) {
return mimeTypeId == IBlobTyping.WORD_DOC_MIME_TYPE_ID || mimeTypeId == IBlobTyping.WORD_DOCX_MIME_TYPE_ID;
}
/**
* Checks if the mime type by the specified mime type id {@code mimeTypeId}
* corresponds to a excel file.
*
* @param mimeTypeId
* @return boolean indicating if it is a excel file
*/
@Override
public boolean isExcel(int mimeTypeId) {
return mimeTypeId == IBlobTyping.EXCEL_XLS_MIME_TYPE_ID || mimeTypeId == IBlobTyping.EXCEL_XLSX_MIME_TYPE_ID;
}
/**
* Checks if the mime type corresponds to an image.
*
* @param mimeTypeId
* @return boolean indicating if it is an image
*/
@Override
public boolean isImage(String mimeType) {
return mimeType.startsWith(IBlobTyping.IMAGE_MIME_TYPE_PREFIX);
}
/**
* Provides the base 64 encoded string representation of a specific blob in
* a specific resolution.
*
* In case of an image mime type it is the base 64 encoded string of the
* image and otherwise a defined image for each mime type representing them.
*
* @param blob
* @return
*/
private String getBase64ValueFromBlob(BlobDto blob) {
assert blob != null : "blobDto must not be null";
if (isImage(blob.getBlobMapping().getMimeTypeId())) {
return getImageHTMLWithBase64EndodedData(blob.getData(), "",
blobAPI.getMimeTypeContentTypeById(blob.getBlobMapping().getMimeTypeId()));
} else if (isPdf(blob.getBlobMapping().getMimeTypeId())) {
return getImageHTMLWithBase64EndodedData(getDefaultPdfIconBase64String(),
blob.getBlobMapping().getFileName(),
blobAPI.getMimeTypeContentTypeById(blob.getBlobMapping().getMimeTypeId()));
} else if (isExcel(blob.getBlobMapping().getMimeTypeId())) {
return getImageHTMLWithBase64EndodedData(getDefaultExcelIconBase64String(),
blob.getBlobMapping().getFileName(),
blobAPI.getMimeTypeContentTypeById(blob.getBlobMapping().getMimeTypeId()));
} else if (isWord(blob.getBlobMapping().getMimeTypeId())) {
return getImageHTMLWithBase64EndodedData(getDefaultWordIconBase64String(),
blob.getBlobMapping().getFileName(),
blobAPI.getMimeTypeContentTypeById(blob.getBlobMapping().getMimeTypeId()));
} else {
return getImageHTMLWithBase64EndodedData(getDefaultImageBase64String(), blob.getBlobMapping().getFileName(),
blobAPI.getMimeTypeContentTypeById(blob.getBlobMapping().getMimeTypeId()));
}
}
/**
* Creates a {@link Label} including the representation of a default image
* (base64 encoded) as placeholder for a not yet existing blob that could be
* visualize. It is primary used when this {@link BlobUploadComponent} is
* newly created to upload a blob. Than no blob is available to be
* visualized.
*
* @return a default placeholder image within a Label
*/
@SuppressWarnings("unused")
private Label getDefaultImageLabel() {
return new Label(getImageHTMLWithBase64EndodedData(getDefaultImageBase64String(), DEFAULTBLOBFILENAME,
DEFAULTBLOBMIMETYPE), ContentMode.HTML);
}
/**
* Provides the HTML-Image-Tag used as input for the {@link Label} of this
* ui component based on an specified base64 encoded byte array, the
* filename of the blob and it´s mime type.
*
* @param encodeBase64Bytes
* @param fileName
* @param mimeType
* @return
*/
private String getImageHTMLWithBase64EndodedData(byte[] encodeBase64Bytes, String fileName, String mimeType) {
String encodeBase64 = new String(encodeBase64Bytes);
return getImageHTMLWithBase64EndodedData(encodeBase64, fileName, mimeType);
}
/**
* Provides the HTML-Image-Tag used as input for the {@link Label} of this
* ui component based on an specified base64 encoded string, the filename of
* the blob and it´s mime type.
*
* @param base64Str
* @param fileName
* @param mimeType
* @return
*/
private String getImageHTMLWithBase64EndodedData(String base64Str, String fileName, String mimeType) {
return "data:" + mimeType + ";base64," + base64Str;
}
/**
* Provides the base64 encoded string representation of the default
* placeholder image (Compex-Logo)
*
* @return the base64 encoded string representation of the default
* placeholder image
*/
private String getDefaultImageBase64String() {
return DEFAULT_IMAGE;
}
/**
* Provides the base64 encoded string representation of the default
* placeholder pdf icon
*
* @return the base64 encoded string representation of the default
* placeholder pdf icon
*/
private String getDefaultPdfIconBase64String() {
return DEFAULT_PDF_ICON;
}
/**
* Provides the base64 encoded string representation of the default
* placeholder word icon
*
* @return the base64 encoded string representation of the default
* placeholder word icon
*/
private String getDefaultWordIconBase64String() {
return DEFAULT_WORD_ICON;
}
/**
* Provides the base64 encoded string representation of the default
* placeholder excel icon
*
* @return the base64 encoded string representation of the default
* placeholder excel icon
*/
private String getDefaultExcelIconBase64String() {
return DEFAULT_EXCEL_ICON;
}
@Override
public String getImage(String uuid, int resolutionId) {
BlobDto blob = getBlobById(uuid, resolutionId);
if (blob != null) {
return "<img src=\"" + getBase64ValueFromBlob(blob) + "\" alt=\"Encoded image in Base64\">";
}
return null;
}
@Override
public String getBirtImage(String uuid, int resolutionId) {
BlobDto blob = getBlobById(uuid, resolutionId);
if (blob != null) {
return getBase64ValueFromBlob(blob);
}
return null;
}
@Override
public StreamResource getResource(String uuid, int resolutionId) {
BlobDto blob = getBlobById(uuid, resolutionId);
if (blob != null) {
return new StreamResource(new StreamSource() {
private static final long serialVersionUID = 1L;
@Override
public InputStream getStream() {
if (isImage(blob.getBlobMapping().getMimeTypeId())) {
return new ByteArrayInputStream(decodeBase64(blob.getData()));
} else {
return new ByteArrayInputStream(blob.getData());
}
}
}, blob.getBlobMapping().getFileName());
}
return null;
}
@Override
public int getNormalizerResolutionIdByName(String displayResolution) {
return blobAPI.getNormalizerResolutionIdByName(displayResolution);
}
@Override
public BufferedImage getBufferedImage(String uuid, int resolutionId) {
BlobDto blob = getBlobById(uuid, resolutionId);
if (blob != null) {
InputStream in = new ByteArrayInputStream(decodeBase64(blob.getData()));
try {
return ImageIO.read(in);
} catch (IOException e) {
// bad luck
}
}
return null;
}
@Override
public String getBase64Image(String uuid, int resolutionId) {
BlobDto blob = getBlobById(uuid, resolutionId);
if (blob != null) {
return Arrays.toString(blob.getData());
}
return null;
}
@Override
public BufferedImage getBufferedImageByName(String name, int resolutionId, String mimeType) {
BlobDto blob = getBlobByName(name, resolutionId, blobAPI.getMimeTypeContentTypeId(mimeType));
if (blob != null) {
InputStream in = new ByteArrayInputStream(decodeBase64(blob.getData()));
try {
return ImageIO.read(in);
} catch (IOException e) {
// bad luck
}
}
return null;
}
@Override
public String getBase64ImageByName(String name, int resolutionId, String mimeType) {
BlobDto blob = getBlobByName(name, resolutionId, blobAPI.getMimeTypeContentTypeId(mimeType));
if (blob != null) {
return Arrays.toString(blob.getData());
}
return null;
}
@Override
public byte[] getByteArrayImage(String uuid, int resolutionId) {
BlobDto blob = getBlobById(uuid, resolutionId);
if (blob != null) {
return decodeBase64(blob.getData());
}
return null;
}
}