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| Опишите Recursively fetching properties from a repository (low-level API). | = SVNRepository.getStatus() vs. SVNRepository.getDir() = Here we will show how you can fetch properties from the repository recursively in a single request using [[SVNRepository]]. Many newbie users who come across the [[SVNRepository]] interface for the first time, decide to implement the task of recursive retrieving properties from a repository tree with the help of [[SVNRepository]]'s ''getDir()'' method. To get properties recursively you'll have to call ''getDir()'' in recursion. It's not a wrong way, but consider the repository tree with multiple leaves (with hundreds or maybe thousands of them). For each directory leave ''getDir()'' sends a new request what leads to extremely slow performance. Basically, what you do with getDir() is the following: {{{#!java public void fetchPropsFromRepository(SVNRepository repos, String path, long revision, Map pathsToProps, ) throws SVNException { SVNProperties props = new SVNProperties(); Collection children = repos.getDir(path, revision, props, SVNDirEntry.DIRENT_ALL, null); pathsToProps.put(path, props); for (Iterator childrenIter = children.iterator(); childrenIter.hasNext();) { } }}} |
SVNRepository.getStatus() vs. SVNRepository.getDir()
Here we will show how you can fetch properties from the repository recursively in a single request using SVNRepository. Many newbie users who come across the SVNRepository interface for the first time, decide to implement the task of recursive retrieving properties from a repository tree with the help of SVNRepository's getDir() method. To get properties recursively you'll have to call getDir() in recursion. It's not a wrong way, but consider the repository tree with multiple leaves (with hundreds or maybe thousands of them). For each directory leave getDir() sends a new request what leads to extremely slow performance.
Basically, what you do with getDir() is the following:
1 public void fetchPropsFromRepository(SVNRepository repos, String path, long revision, Map pathsToProps, ) throws SVNException {
2 SVNProperties props = new SVNProperties();
3 Collection children = repos.getDir(path, revision, props, SVNDirEntry.DIRENT_ALL, null);
4 pathsToProps.put(path, props);
5 for (Iterator childrenIter = children.iterator(); childrenIter.hasNext();) {
6
7 }