/**
* Get an old revision of the attachment which this is an archive of.
*
* @param attachment This attachment will be used to get the document to associate the attachment
* revision with.
* @param rev a String representation of the version to load.
* @param context the context for the request which needed this revision.
* @return an XWikiAttachment for the given revision.
* @throws XWikiException if any Exception is thrown while getting the revision.
*/
public XWikiAttachment getRevision(
final XWikiAttachment attachment, final String rev, final XWikiContext context)
throws XWikiException {
try {
final Archive rcsArchive = getRCSArchive();
if (rcsArchive == null) {
return null;
}
final Version version = rcsArchive.getRevisionVersion(rev);
if (version == null) {
return null;
}
final Object[] lines = rcsArchive.getRevision(version);
final StringBuffer content = new StringBuffer();
for (int i = 0; i < lines.length; i++) {
String line = lines[i].toString();
content.append(line);
if (i != lines.length - 1) {
content.append("\n");
}
}
final String scontent = content.toString();
final XWikiAttachment revattach = new XWikiAttachment();
revattach.fromXML(scontent);
revattach.setDoc(attachment.getDoc());
revattach.setVersion(rev);
return revattach;
} catch (Exception e) {
final Object[] args = {attachment.getFilename()};
throw new XWikiException(
XWikiException.MODULE_XWIKI_STORE,
XWikiException.ERROR_XWIKI_STORE_ATTACHMENT_ARCHIVEFORMAT,
GENERIC_EXCEPTION_MESSAGE,
e,
args);
}
}
/**
* Unit test for <a href="http://jira.xwiki.org/browse/XWIKI-9075">XWIKI-9075</a> to prove that
* calling {@code fromXML} doesn't set the metadata dirty flag.
*
* <p>Note: I think there's a bug in that fromXML should return a new instance of XWikiAttachment
* and not modify the current one as this would mean changing its identity...
*/
@Test
public void fromXML() throws Exception {
XWikiAttachment attachment = new XWikiAttachment();
attachment.fromXML(
"<attachment>\n"
+ "<filename>XWikiLogo.png</filename>\n"
+ "<filesize>1390</filesize>\n"
+ "<mimetype>image/png2</mimetype>\n"
+ "<author>xwiki:XWiki.Admin</author>\n"
+ "<date>1252454400000</date>\n"
+ "<version>1.1</version>\n"
+ "<comment/>\n"
+ "<content>MDEyMzQ1Njc4OQ==</content>\n"
+ "</attachment>");
assertEquals("XWikiLogo.png", attachment.getFilename());
assertEquals(new Date(1252454400000L), attachment.getDate());
assertEquals("1.1", attachment.getVersion());
assertEquals("0123456789", IOUtils.toString(attachment.getContentInputStream(null)));
assertEquals("image/png2", attachment.getMimeType());
assertEquals("image/png2", attachment.getMimeType(null));
assertFalse(attachment.isMetaDataDirty());
}
