org.gcube.portlets.user.shareupdates.server

Class FilePreviewer

java.lang.Object

org.gcube.portlets.user.shareupdates.server.FilePreviewer

public class FilePreviewer
extends Object

Author:

Massimiliano Assante, ISTI-CNR Parse files and returns an image preview plus description

Constructor Summary

Constructors

Constructor and Description
FilePreviewer()

Method Summary

Methods

Modifier and Type	Method and Description
protected static LinkPreview	getImagePreview(String fileName, String path2Image, String httpUrl, String mimeType, String context)
protected static String	getMimeType(File file, String filenameWithExtension)
protected static LinkPreview	getPdfPreview(String fileName, String path2Pdf, String httpUrl, String mimeType, String context)
protected static LinkPreview	getUnhandledTypePreview(String fileName, String path2Pdf, String httpUrl, String mimeType, String context)
static String	saveThumbnailOnFTPAndGetUrl(String urlThumbnail, String context) When a link preview needs to be saved, the method save the thumbnail on the storage no longer using the external url
static File	storeAndGetFile(String urlThumbnail) Check if a resource at a given url exists or not.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

FilePreviewer

public FilePreviewer()

Method Detail

getPdfPreview

protected static LinkPreview getPdfPreview(String fileName,
                        String path2Pdf,
                        String httpUrl,
                        String mimeType,
                        String context)
                                    throws Exception

Parameters:

fileNameLabel - thename of the file

path2Pdf - the path of the pdf file

httpUrl - the http url where the file is reachable at

context - the current infrastructure context (scope)

Returns:

Throws:

Exception

getImagePreview

protected static LinkPreview getImagePreview(String fileName,
                          String path2Image,
                          String httpUrl,
                          String mimeType,
                          String context)

Parameters:

fileNameLabel - thename of the file

path2Image - the path of the image file

httpUrl - the http url where the file is reachable at

Returns:

Throws:

Exception

getUnhandledTypePreview

protected static LinkPreview getUnhandledTypePreview(String fileName,
                                  String path2Pdf,
                                  String httpUrl,
                                  String mimeType,
                                  String context)
                                              throws Exception

Parameters:

fileNameLabel - thename of the file

path2Pdf - the path of the pdf file

httpUrl - the http url where the file is reachable at

Returns:

Throws:

Exception

getMimeType

protected static String getMimeType(File file,
                 String filenameWithExtension)
                             throws IOException

Parameters:

file -

Returns:

Throws:

IOException

MagicParseException

MagicMatchNotFoundException

MagicException

storeAndGetFile

public static File storeAndGetFile(String urlThumbnail)

Check if a resource at a given url exists or not. If it exists, create a file in the temp dir of the tomcat

Parameters:

urlThumbnail -

Returns:

saveThumbnailOnFTPAndGetUrl

public static String saveThumbnailOnFTPAndGetUrl(String urlThumbnail,
                                 String context)

When a link preview needs to be saved, the method save the thumbnail on the storage no longer using the external url

Parameters:

urlThumbnail -

Returns:

the url of the thumbnail saved on the storage or null in case of error