Examples of org.eclipse.jgit.dircache.DirCacheIterator

org.eclipse.jgit.dircache.DirCacheIterator
Iterate a {@link DirCache} as part of a TreeWalk.
This is an iterator to adapt a loaded DirCache instance (such as read from an existing .git/index file) to the tree structure used by a TreeWalk, making it possible for applications to walk over any combination of tree objects already in the object database, index files, or working directories. @see org.eclipse.jgit.treewalk.TreeWalk

      assertEquals(4, tree.getEntryCount());
    }


    final TreeWalk tw = new TreeWalk(db);
    tw.setPostOrderTraversal(true);
    tw.addTree(new DirCacheIterator(tree));


    assertModes("a", REGULAR_FILE, tw);


    assertModes("b", TREE, tw);
    assertTrue(tw.isSubtree());

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      assertEquals(4, tree.getEntryCount());
    }


    final TreeWalk tw = new TreeWalk(db);
    tw.setPostOrderTraversal(true);
    tw.addTree(new DirCacheIterator(tree));


    assertModes("a", REGULAR_FILE, tw);


    assertModes("b", TREE, tw);
    assertTrue(tw.isSubtree());

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      assertEquals(3, tree0.getEntryCount());
      assertEquals(1, tree1.getEntryCount());
    }


    final TreeWalk tw = new TreeWalk(db);
    tw.addTree(new DirCacheIterator(tree0));
    tw.addTree(new DirCacheIterator(tree1));


    assertModes("a", REGULAR_FILE, MISSING, tw);
    assertModes("a.b", EXECUTABLE_FILE, MISSING, tw);
    assertModes("a", MISSING, TREE, tw);
    tw.enterSubtree();

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      assertEquals(3, tree0.getEntryCount());
      assertEquals(1, tree1.getEntryCount());
    }


    final NameConflictTreeWalk tw = new NameConflictTreeWalk(db);
    tw.addTree(new DirCacheIterator(tree0));
    tw.addTree(new DirCacheIterator(tree1));


    assertModes("a", REGULAR_FILE, TREE, tw);
    assertTrue(tw.isDirectoryFileConflict());
    assertTrue(tw.isSubtree());
    tw.enterSubtree();

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      assertEquals(3, tree0.getEntryCount());
      assertEquals(2, tree1.getEntryCount());
    }


    final NameConflictTreeWalk tw = new NameConflictTreeWalk(db);
    tw.addTree(new DirCacheIterator(tree0));
    tw.addTree(new DirCacheIterator(tree1));


    assertModes("a", REGULAR_FILE, TREE, tw);
    assertTrue(tw.isSubtree());
    assertTrue(tw.isDirectoryFileConflict());
    tw.enterSubtree();

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      assertEquals(2, tree0.getEntryCount());
      assertEquals(3, tree1.getEntryCount());
    }


    final NameConflictTreeWalk tw = new NameConflictTreeWalk(db);
    tw.addTree(new DirCacheIterator(tree0));
    tw.addTree(new DirCacheIterator(tree1));


    assertModes("a", REGULAR_FILE, TREE, tw);
    assertTrue(tw.isSubtree());
    assertTrue(tw.isDirectoryFileConflict());
    tw.enterSubtree();

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      assertEquals(2, tree0.getEntryCount());
      assertEquals(4, tree1.getEntryCount());
    }


    final NameConflictTreeWalk tw = new NameConflictTreeWalk(db);
    tw.addTree(new DirCacheIterator(tree0));
    tw.addTree(new DirCacheIterator(tree1));


    assertModes("0", REGULAR_FILE, REGULAR_FILE, tw);
    assertFalse(tw.isDirectoryFileConflict());
    assertModes("a", REGULAR_FILE, TREE, tw);
    assertTrue(tw.isSubtree());

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    DirCacheEntry dce = db.readDirCache().getEntry("file");
    TreeWalk tw = new TreeWalk(db);
    FileTreeIterator fti = new FileTreeIterator(trash, db.getFS(), db
        .getConfig().get(WorkingTreeOptions.KEY));
    tw.addTree(fti);
    DirCacheIterator dci = new DirCacheIterator(db.readDirCache());
    tw.addTree(dci);
    fti.setDirCacheIterator(tw, 1);
    while (tw.next() && !tw.getPathString().equals("file")) {
      //
    }

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    Git.cloneRepository().setURI(db.getDirectory().toURI().toString())
        .setDirectory(new File(db.getWorkTree(), path)).call()
        .getRepository().close();


    TreeWalk walk = new TreeWalk(db);
    DirCacheIterator indexIter = new DirCacheIterator(db.readDirCache());
    FileTreeIterator workTreeIter = new FileTreeIterator(db);
    walk.addTree(indexIter);
    walk.addTree(workTreeIter);
    walk.setFilter(PathFilter.create(path));


    assertTrue(walk.next());
    assertTrue(indexIter.idEqual(workTreeIter));
  }

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    File submoduleRoot = new File(db.getWorkTree(), path);
    assertTrue(submoduleRoot.mkdir());
    assertTrue(new File(submoduleRoot, Constants.DOT_GIT).mkdir());


    TreeWalk walk = new TreeWalk(db);
    DirCacheIterator indexIter = new DirCacheIterator(db.readDirCache());
    FileTreeIterator workTreeIter = new FileTreeIterator(db);
    walk.addTree(indexIter);
    walk.addTree(workTreeIter);
    walk.setFilter(PathFilter.create(path));


    assertTrue(walk.next());
    assertFalse(indexIter.idEqual(workTreeIter));
    assertEquals(ObjectId.zeroId(), workTreeIter.getEntryObjectId());
  }

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