Develop Reference

Accessing commit details of a specific file using jgit in springboot

I have been trying to get git comit log for a specific file in git repo, but after multiple attempts I am failing to identify the source of the problem.
Here is the link to my github code.
PS: The files Folder needs to be deleted everytime the app needs to start again. Any tips on that would be also helpful.
To put it in short, I tried the below piece of code to get the commit log, but I am getting a null RevCommit.
Repository repository = git.getRepository();
//Approach 1
RevCommit commits = git.log().addPath("D:/Code_downloads/fileaccess/files/dev/Doc2.csv").call().iterator().next();
//Approach 2
RevWalk revWalk = new RevWalk( repository );
revWalk.markStart( revWalk.parseCommit( repository.resolve( Constants.HEAD ) ) );
revWalk.setTreeFilter(PathFilter.create( "D:/Code_downloads/fileaccess/files/dev/Doc2.csv" ) );
revWalk.sort( RevSort.COMMIT_TIME_DESC );
revWalk.sort( RevSort.REVERSE, true );
RevCommit commit = revWalk.next();
Referred multiple documentations and stackoverflow posts. no luck.
https://archive.eclipse.org/jgit/site/4.5.0.201609210915-r/apidocs/org/eclipse/jgit/api/LogCommand.html
Any help will be appreciated.

It should work to use addPath() and then iterate over the RevCommits.
But you should not use the "absoulte path" to the file, but rather only the relative path inside your repository.
E.g.
Iterable<RevCommit logs = git.log().addPath("README.md").call();
for (RevCommit rev : logs) {
System.out.println("Commit: " + rev + ", name: " + rev.getName() + ", id: " + rev.getId().getName());
}
There is a ready-to-run snippet in the jgit-cookbook which shows a few more ways to iterate commits.

tabula asks me to update java while last version already installed

I have been testing my code a few times and it worked well every time, but now for some reason it raises a weird error that I will right down just after.
I am using tabula to read some pdf file, here is the code where it appears there is an error :
for it_page,page in enumerate(pages_id, start=0):
print("page : ", page)
tables = tabula.read_pdf(hermes_pdf_dir + "/" + pdf_name, pages = page)
for i,table in enumerate(tables, start=1):
print( "titre retenu : " + pages_id_titres[it_page][1] + f"_{i}.xlsx")
table.to_excel(os.path.join(folder_name, pages_id_titres[it_page][1] + " p" + str(page) + f"_{i}.xlsx"), index=False)
The error is at the line beginning with "tables = tabula.read_pdf(...)".
Most importantly, here is the full error message :
Traceback (most recent call last):
File "get_pdfs_hermes.py", line 299, in <module>
read_pdf_download_csv(pdf_name2)
File "get_pdfs_hermes.py", line 199, in read_pdf_download_csv
tables = tabula.read_pdf(hermes_pdf_dir + "/" + pdf_name, pages = page)
File "C:\Users\virgi\Python\lib\site-packages\tabula\io.py", line 322, in read_pdf
output = _run(java_options, kwargs, path, encoding)
File "C:\Users\virgi\Python\lib\site-packages\tabula\io.py", line 80, in _run
result = subprocess.run(
File "C:\Users\virgi\Python\lib\subprocess.py", line 512, in run
raise CalledProcessError(retcode, process.args,
subprocess.CalledProcessError: Command '['java', '-Dfile.encoding=UTF8', '-jar', 'C:\\Users\\virgi\\Python\\lib\\site-packages\\tabula\\tabula-1.0.4-jar-with-dependencies.jar', '--pages', '104', '--guess', '--format', 'JSON', 'C:\\Users\\virgi\\Desktop\\virgile_stuff\\prog\\banking analyst\\financial_data/data/hermes_data/hermes_2014_rapportannuel_en.pdf']' returned non-zero exit status 1.
It talks about java dependencies (maybe because tabula has tabula-py and tabula-java ?) and the most related issues I found regarding this kind of errors say that java should be updated, while I have the very latest version on my computer.
Any ideas of what it could be ?

By simply making an exception for the pdf file that was tackled while the error occured, it seems to work well again. I think the issue comes from the page encodage or something like that.

RefNotFoundException when creating a branch in JGIT

I have a problem where i cannot create local branch.
Error: org.eclipse.jgit.api.errors.RefNotFoundException: Ref origin/sideMerge cannot be resolved
I have checked the following topics and some others in Stackoverflow but it seems something fishy going on or something i don't understand yet.
Can someone point me to a direction what i don't understand regarding the Ref ?
As far as i know the local refs starts from origin/"other_branch"
Code snippet:
Git git;
CreateBranchCommand tmpCreateBranch;
git = new Git(existingRepo);
tmpCreateBranch = git.branchCreate();
try {
tmpCreateBranch.setName(tmpBranchName).setStartPoint("origin/" + tmpBranchName).setForce(true).call();
} catch (Exception e) {
System.out.println("Error in Branch creation");
System.out.println(e);
}

According to Git manual, you can create a branch using the following syntax. It creates a new branch head named <branchname> which points to the current HEAD, or <start-point> if given:
git branch [--track | --no-track] [-l] [-f] <branchname> [<start-point>]
Therefore, you can create a local branch "topic" by following the similar syntax in JGit (see next code-block). In this case, you didn't configure the start-point explicitly. JGit will use HEAD as start-point. So everything works fine:
git.branchCreate().setName("topic").call();
However, if you create a local branch with start-point origin/topic, JGit will try to find this reference in Git References. In this context, origin is the name of the remote, and topic is the name of the branch. If not found, it raises an exception:
git.branchCreate().setName("topic").setStartPoint("origin/topic").call();
You also need to be aware that:
setForce(true) will reset the target branch name to start-point if branch name exists already. Without -f,--force git branch refuses to change an existing branch.

Szilágyi István, I create the branch as follows:
try (Git git = new Git(repository)) {
Ref ref = git.branchCreate().setName("Name_Branch").setStartPoint("origin/develop").call();
git.checkout().setName(branch).call();
git.push().setCredentialsProvider(userService.getCredencialsProvider()).call();
logger.info("Branch created: " + ref + " - " + ref.getName() + " - " + ref.getObjectId().getName());
}

How to add/commit a new file to SVN with SVNKit

Unable to add and commit a file to a subversion repository.
With the following code snippet:
SVNCommitClient svnCommitClient = svnClientManager.getCommitClient();
svnCommitClient.doCommit(new File[]{new File("project/README.txt")}, false, "Commit message", null, null, false, false, SVNDepth.INFINITY);
I get the following exception:
Exception in thread "main" org.tmatesoft.svn.core.SVNException: svn: E200009: Commit failed (details follow):
svn: E200009: 'D:\Java\POC\SvnKit\project\README.txt' is not under version control
Prompt what I did wrong, and I would like to see an example of how to

Welcome to Stackoverflow,
like the exception already tells you, the file you want to be committed is not under version control yet, so you have to add it first.
On your CommitEditor you should call something like this:
SVNRepository repository = SVNRepositoryFactory.create( SVNURL.parseURIDecoded( url ) );
ISVNEditor editor = repository.getCommitEditor( logMessage , null /*locks*/ , true /*keepLocks*/ , null /*mediator*/ );
//the second and the third parameters are the path and revision respectively
//of the item's ancestor if the item is being added with history
editor.addFile( "your/path/project/README.txt" , null , -1 );
You should also have a look at the full example at SVNKit

How to find unresolved files using the Perforce p4java library?

Using the p4java library from Perforce (http://kb.perforce.com/article/1086/p4java-api), I'm trying to find out what files in a changelist are unresolved and need to be resolved before I can submit them.
IChangelist changelist = getServer().getChangelist(changelistId);
List<IFileSpec> changelistPendingFiles = changelist.getFiles(false);
In this List, I'm trying to figure out which IFileSpec still need to be resolved.
Something like this:
for (IFileSpec pendingFile : changelistPendingFiles) {
// How to find out if pendingFile needs to be resolved?
FileAction action = pendingFile.getAction();
// The above results in "FileAction.EDIT",
// but that doesn't tell me anything about the unresolved state
// The "diffStatus" variable for this pendingFile is "pending"
// The "howResolved" variable for this pendingFile is null
// The "opStatus" variable for this pendingFile is VALID
}
Thanks for anything you can provide!

The comprehensive way is to run P4Java's version of the fstat command, and check if the file needs resolving. Here's a code sample (not guaranteed to be bulletproof) that works in a simple test case.
List<IExtendedFileSpec> extfiles = server.getExtendedFiles(changelistPendingFiles,
-1,
-1,
-1,
new FileStatOutputOptions(false, false, false, false, false, true),
null);
for(IExtendedFileSpec extfile : extfiles) {
System.out.println(extfile.isUnresolved());
}
In the FileStatOutputOptions, I'm asking for information on files that are open and need resolving. The isUnresolved method should tell you what you want.
Hope that helps!