loci.common

Class CaseInsensitiveLocation.Cache

java.lang.Object

loci.common.CaseInsensitiveLocation.Cache

Enclosing class:

CaseInsensitiveLocation

private static final class CaseInsensitiveLocation.Cache
extends Object

Caching for CaseInsensitiveLocation. A case insensitive path lookup requires a full scan of the containing directory, which can be very expensive. This class caches insensitive-to-sensitive name mappings, so the correct casing on the filesystem is returned.

Field Summary

Fields

Modifier and Type	Field and Description
private HashMap<String,HashMap<String,String>>	cache Mapping of directory names to directory content, the content being a mapping of case insensitive name to case sensitive (real) name on disc.

Constructor Summary

Constructors

Constructor and Description
CaseInsensitiveLocation.Cache() The constructor.

Method Summary

Methods

Modifier and Type	Method and Description
private HashMap<String,String>	fill(Location dir) Fill the cache with the content for the specified directory.
void	invalidate() Remove all content from the cache.
void	invalidate(Location dir) Remove a directory from the cache.
Location	lookup(Location name) Look up a filename in the cache.

Methods inherited from class java.lang.Object

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

Field Detail

cache

private HashMap<String,HashMap<String,String>> cache

Mapping of directory names to directory content, the content being a mapping of case insensitive name to case sensitive (real) name on disc.

Constructor Detail

CaseInsensitiveLocation.Cache

public CaseInsensitiveLocation.Cache()

The constructor.

Method Detail

fill

private HashMap<String,String> fill(Location dir)
                             throws IOException

Fill the cache with the content for the specified directory.

Parameters:

dir - the directory to cache.

Returns:

the filename mappings for the directory, or null if the directory did not exist.

Throws:

IOException

invalidate

public void invalidate(Location dir)

Remove a directory from the cache.

Parameters:

dir - the directory to remove.

invalidate

public void invalidate()

Remove all content from the cache.

lookup

public Location lookup(Location name)
                throws IOException

Look up a filename in the cache.

Parameters:

name - the name to look up (case insensitive).

Returns:

the filename on disc (case sensitive).

Throws:

IOException