git_tree_lookup - The requested type does not match the type in the ODB

[laczak]

Hi,
I'm trying to do an example/diff.php but I have an error:

Warning:  git_tree_lookup(): WARNING -3 git_commit_lookup - The requested type does not match the type in the ODB in /srv/www/htdocs/index.php on line 6

Warning:  git_diff_tree_to_workdir() expects parameter 2 to be resource, boolean given in /srv/www/htdocs/index.php on line 7

Warning:  git_diff_print() expects parameter 1 to be resource, null given in /srv/www/htdocs/index.php on line 15

Source code:

<?php
//phpinfo();

echo '<pre>';
$repo = git_repository_open("/home/michal/git/base-app");
$tree = git_tree_lookup($repo, "96b38d2751d00bae12f42e6331140076d6f79a3c");
$diff = git_diff_tree_to_workdir($repo, $tree, git_diff_options_init());

$p = array();
git_diff_print($diff, GIT_DIFF_FORMAT_PATCH, function($diff_delta, $diff_hunk, $diff_line, $payload){
    if ($diff_line['origin'] == "-" || $diff_line['origin'] == "+") {
        echo $diff_line['origin'];
    }
    echo $diff_line['content'];
}, $p);
echo '</pre>';

The error is in this line:

$tree = git_tree_lookup($repo, "96b38d2751d00bae12f42e6331140076d6f79a3c");

This hash is one of my commit hash.

[ghost]

This is the correct response. git_tree_lookup requires the id of a git tree object, not a git commit object. So by giving it a git commit object you generated the error:
Warning: git_tree_lookup(): WARNING -3 git_commit_lookup - The requested type does not match the type in the ODB in /srv/www/htdocs/index.php on line 6

The other errors are because $tree is null instead of being a git tree resource.

I've added two tests of git_tree_lookup using libgit2's tests as a model:
#69

The test first uses a known tree hash from the libgit2 testrepo and verifies the lookup was successful.

The second test uses a known file hash from the libgit2 testrepo and verifies that $tree is null.

[chobie]

thanks garyamort. this is expected behaviour. please check api doc.
http://libgit2.github.com/libgit2/#v0.20.0/group/tree/git_tree_lookup