Google Git
Sign in
eclipse / osbp / org.eclipse.osbp.blob / bb221a6754386bfca7b3479b3632ba7d382296cf / . / org.eclipse.osbp.blob / src / org / eclipse / osbp / blob / service / BlobService.java
blob: 23df1f8914201afba289ed9172e3fffb1946f6bc [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 v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* 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.List;
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.runtime.common.filter.IDTOServiceWithMutablePersistence;
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 IDTOServiceWithMutablePersistence<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 = "iVBORw0KGgoAAAANSUhEUgAAACAAAAAgCAYAAABzenr0AAAAAXNSR0IArs4c6QAAAAZiS0dEAP8A/wD/oL2nkwAAAAlwSFlzAAALEwAACxMBAJqcGAAAAAd0SU1FB94LGQw5BlDcLxAAABArSURBVFgJASAQ3+8AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAKioqAAAAAAAAAAAAAAAAAAAAAAABAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAATR0dFO+/v7BAMDAxwCAgIp/////f///xP9/f0WAAAA//j4+Ar+/v7bPj4+XgAAAP4AAAD/AAAAAAAAAAABAAAAAAAAAAAAAAAAAAAAALq6ujgMDAw8BgYGKP39/f0FBQUwAQEBFQAAAAH///8f////AQEBAQD4+PgAAQEBAAEBAQAAAAAAAwMDAAICAgAEBAQAAQEBAAUFBQAFBQUABgYGAAoKCgDX19fr3d3dbGBgYK0AAAD9AAAAAAAAAAABAAAAAAAAAAAAAAAAAAAAAM/Pz/8hISEA////AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD/AAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAP///wACAgIA4ODgADAwMAEAAAAAAAAAAAAAAAAEAAAAAAAAAAAAAAAAAAAAAAICAgAKCgoA////AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABAQEAAgICAAAAAAAAAAAAAAAAAAAAAAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA////AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABAQEAAAAAAAAAAAEAAAD/AAAAAAAAAAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAQEBAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAIAAAD+AAAA/wAAAAAEAAAAAAAAAAAAAAAAAAAAAAAAAAD///8A////AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAEAAAAAAAAAAAAAAAAEAAAAAAAAAAAAAAAAAAAAAAAAAAD///8A////AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAEAAAAAAAAAAAAAAAACAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD//wAABwcAAAQEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAQAAAACAAAAAAAAAAACAAAAAAAAAAAAAAAAAAAAAAAAAAD///8A////AP///wD//v4A//7+AP/+/gD//v4A//7+AP8HBwD/d3cA/7W1AP8DAwD///8A////AP///wD///8A////AP///wD///8A////AP///wD///8AAAAAAAAAAAYAAAACAAAAAAAAAAACAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAQEBAAEAAAAAAAAAAAAAAAEBAQABAQEAAAEBAAD6+gD9vLwA/xkZAAEAAAABAQEAAAAAAAAAAAABAQEAAQEBAAAAAAAAAAAAAQEBAAEBAQAAAAAAAQEBAAAAAAUAAAACAAAAAAAAAAAEAAAAAAAAAAAAAAAAAAAAAP///wAAAAAA/v7+AAAAAAAA//8AAAAAAP///wAAAAAAAAEBAAEGBgD7/PwABysrAP78/AAA//8AAAAAAAAAAAD///8AAAAAAAAAAAAAAAAA////AAAAAAACAgIAAAAAAAAAAAQAAAACAAAAAAAAAAACAAAAAAAAAAAAAAAAAAAAAAAAAAD///8AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAP8DAwD9FRUA/L+/AAEEBAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD///8AAAAAAAAAAAQAAAABAAAAAAAAAAACAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABAQAAAQEAAAAAAAH+/gD/JycA+9bWAAABAQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAIAAAABAAAAAAAAAAAEAAAAAAAAAAAAAAAAAAAAAAAAAAD///8A////AAAAAAAAAAAAAAAAAAD//wAAAAAAAAAAAAD5+QADQUEA/u7uAP/9/QD///8AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAP0CAgIB/v7+AAAAAAACAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAP8FBQD50NAA8ZOTAAAFBQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD///8A/v7+AJGRkUv+/v4AAAAAAAAAAAACAAAAAAAAAAAAAAAAAAAAAAAAAAD///8A////AP///wD///8A////AP///wD///8A////AP7w8AD1y8sABUZGAO6GhgAABAQA////AP///wD///8A////AP///wD///8A////AP///wAAAAAAAAAAAAEBAQgAAAAFAAAAAQAAAAACAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAQMDAOlzcwARfn4AFY6OAPXIyAD3y8sAAQUFAAECAgABAwMAAQMDAAEDAwAAAQEAAAAAAAAAAAAAAAAA////ACsrKz0AAAABAAAAAQAAAAAEAAAAAAAAAAAAAAAAAAAAAAAAAAD///8A////AAAAAAAAAAAAAAAAAAAAAAAAAAAA+uTkAP4KCgAIODgA/PT0ABqlpQDmbm4ABLe3AA9SUgD409MA//z8AAINDQAOR0cAAAMDAAAAAAAAAAAAAAAAAAICAgwAAAAEAAAAAQAAAAACAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACBwcA8K+vABBeXgD53t4A9tDQAOucnAAAFBQA+efnANtNTQD11NQABBwcAAIJCQDrlpYAAggIAAEAAAAAAAAAAAAAAAQEBBQAAAACAAAAAQAAAAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAP//AAADAwD54uIA6aSkAAgxMQADDw8ABBUVABNeXgACCwsAAAEBABru7gD319cA88rKAPrn5wAPPj4A+ujoAAQQEAABAAAAAAAAAP7+/ggAAAABAAAAAQAAAAAEAAAAAAAAAAAAAAAAAAAAAP///wD///8A////AAAAAAAAAQEA/fX1APzv7wDbaGgAKbq6AAQPDwD//PwAAP//AAAAAAD//PwAAAAAAAINDQAMNzcADT09AAADAwD//PwA//v7AP///wAAAAAAAAAA//z8/AQAAAACAAAAAAAAAAACAAAAAAAAAAAAAAAAAAAAAAEBAQAAAAAAAAAAAAAAAAD87+8A6qysAPPS0gAXY2MABA4OAP/7+wAA//8AAAAAAAAAAAAAAAAAAAAAAAAAAAD///8A/vn5AP729gD/+voAAP//AAAAAAAAAAAAAAAAAQgICBBHR0cUAAAAAgAAAAACAAAAAAAAAAAAAAAAAAAAAP///wD///8A/wAAAAACAgDXdnYADDU1AOKdnQATTEwA/vv7AP///wD///8A////AP///wD///8A////AP///wD///8A////AP///wD///8A////AP///wD///8A////AAQEBAUICAgJAAAAAwAAAAACAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAQAAAPno6AD9AgIA4qKiAC6jowACBQUAAAAAAAAAAAABAQEAAAAAAAEBAQABAQEAAAAAAAAAAAABAQEAAQEBAAAAAAAAAAAAAQEBAAEBAQAAAAAAAAAAAAcHBwsYGBgRAAAAAwAAAAAEAAAAAAAAAAAAAAAAAAAAAAAAAAD///8A////AAYWFgAxoKAAAP//AP339wD+/v4AAAAAAAAAAAD///8AAAAAAP///wAAAAAAAAAAAAAAAAD///8AAAAAAAAAAAAAAAAA////AAAAAAABAQEA////AAcHBwMBAQEFAAAAAwAAAAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAP/+/gD99vYAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD///8AAAAAAAcHBwUHBwcKAAAAAQAAAAECAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABAQEAAAAA/wICAgACAgIEAAAAAgAAAAAEAAAAAAAAAAAAAAAAAAAAAAAAAAACAgIA////AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABAQEABAQEAXh4eFfT09PbAAAA+wAAAP8BAAAAAAAAAAAAAAAAAAAAAMfHx9n6+vr1/Pz8Bf39/QIAAAAAAAAAAAEBAQAAAAD/AAAAAAEBAf8AAAAAAQEB/wEBAf8AAAAAAQEB/wAAAAAAAAAAAAAAAAAAAAABAQH/AAAAAAAAAAAAAAD/BQUFDTs7OzIAAAADAAAA9QAAAPsAAAAAAAAAAAAAAAAAyMjIAAAAAAAAAAACAAAAEQAAABgAAAAZAAAAGAAAABYAAAAVAAAAFAAAABEAAAAPAAAADQAAAAsAAAAHAAAABQAAAAYAAAAGAAAABQAAAAQAAAADAAAAAwAAAAIAAAAAAAAAABUVFQMAAAABAAAAAAAAAACyU1AG+CMCBAAAAABJRU5ErkJggg==";
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";
/**
* 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 IDTOServiceWithMutablePersistence<?>) {
dtoBlobMappingDtoService = (IDTOServiceWithMutablePersistence<BlobMappingDto>) 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);
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));
if (imgBlobRes.height == 0) {
blobList.add(createImageBlob(bytes,
blobAPI.getNormalizerResolutionIdByListIndex(i)));
} else {
BufferedImage img = resizeImage(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 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 resizeImage(byte[] bytes, int newWidth, int newHeight)
throws IOException {
ByteArrayInputStream bis = new ByteArrayInputStream(bytes);
Image image = ImageIO.read(bis);
bis.close();
image = image.getScaledInstance(newWidth, newHeight,
Image.SCALE_AREA_AVERAGING);
BufferedImage buffered = new BufferedImage(image.getWidth(null),
image.getHeight(null), BufferedImage.TYPE_INT_RGB);
buffered.getGraphics().drawImage(image, 0, 0, null);
return buffered;
}
/**
* 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 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(getBlobById(uuid, resolutionId)) + "\" 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(getBlobById(uuid, resolutionId));
}
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 byte[] getByteArrayImage(String uuid, int resolutionId) {
BlobDto blob = getBlobById(uuid, resolutionId);
if(blob != null) {
return decodeBase64(blob.getData());
}
return null;
}
}