com.swoval.files

Class FileTreeRepositories

java.lang.Object

com.swoval.files.FileTreeRepositories

public class FileTreeRepositories
extends java.lang.Object

Provides factory methods for generating instances of FileTreeRepository.

Method Summary

Modifier and Type	Method and Description
static <T> FileTreeRepository<T>	get(FileTreeDataViews.Converter<T> converter, boolean followLinks) Create a file tree repository.
static <T> FileTreeRepository<T>	get(FileTreeDataViews.Converter<T> converter, boolean followLinks, boolean rescanOnDirectoryUpdates, Logger logger) Create a file tree repository.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

get

public static <T> FileTreeRepository<T> get(FileTreeDataViews.Converter<T> converter,
                                            boolean followLinks)
                                     throws java.lang.InterruptedException,
                                            java.io.IOException

Create a file tree repository.

Type Parameters:

T - the value type of the cache entries

Parameters:

converter - converts a path to the cached value type T

followLinks - toggles whether or not to follow symbolic links. When true, any symbolic links that point to a regular file will trigger an event when the target file is modified. For any symbolic links that point to a directory, the children of the target directory will be included (up to the max depth parameter specified by FileTreeRepository.register(java.nio.file.Path, int)) and will trigger an event when any of the included children are modified. When false, symbolic links are not followed and only events for the symbolic link itself are reported.

Returns:

a file tree repository.

Throws:

java.lang.InterruptedException - if the path watcher can't be started.

java.io.IOException - if an instance of WatchService cannot be created.

get

public static <T> FileTreeRepository<T> get(FileTreeDataViews.Converter<T> converter,
                                            boolean followLinks,
                                            boolean rescanOnDirectoryUpdates,
                                            Logger logger)
                                     throws java.lang.InterruptedException,
                                            java.io.IOException

Create a file tree repository.

Type Parameters:

T - the value type of the cache entries

Parameters:

converter - converts a path to the cached value type T

followLinks - toggles whether or not to follow symbolic links. When true, any symbolic links that point to a regular file will trigger an event when the target file is modified. For any symbolic links that point to a directory, the children of the target directory will be included (up to the max depth parameter specified by FileTreeRepository.register(java.nio.file.Path, int)) and will trigger an event when any of the included children are modified. When false, symbolic links are not followed and only events for the symbolic link itself are reported.

rescanOnDirectoryUpdates - toggles whether or not we rescan a directory's subtree when an update is detected for that directory. This can be very expensive since it will perform iops proportional to the number of files in the subtree. It generally should not be necessary since we are also watching the subtree for events.

logger - logs debug events

Returns:

a file tree repository.

Throws:

java.lang.InterruptedException - if the path watcher can't be started.

java.io.IOException - if an instance of WatchService cannot be created.