ChunkFileIterator Class Reference

Inheritance diagram for ChunkFileIterator:

Collaboration diagram for ChunkFileIterator:

List of all members.

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Detailed Description

An Iterator which iterates over files of a DataStore. The different constructors are designed to reduce the number of files to visit, as, for instance, the signalId or the range of a search can be defined.

Author:

sschwieb

Public Methods
	ChunkFileIterator (DataStore dataStore, String signal, int chunkId, SearchMask<?> mask) throws DataStoreException
ChunkFileIterator	copy () throws DataStoreException
int	getNumberOfFiles ()
boolean	iterateSignals ()
boolean	hasNext ()
File	next ()
final void	remove ()
void	removeNotMatchingConstraints (Range anchorConstraint, ChunkCache chunkCache)
Package Attributes
final FileFilter	chunkFilter
final Comparator< File >	fileComparator

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Constructors

ChunkFileIterator	(	DataStore	dataStore,
		String	signal,
		int	chunkId,
		SearchMask<?>	mask
	)		throws DataStoreException

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Method Details

ChunkFileIterator copy

(

)

throws DataStoreException

int getNumberOfFiles

(

)

boolean hasNext

(

)

boolean iterateSignals

(

)

File next

(

)

final void remove

(

)

void removeNotMatchingConstraints	(	Range	anchorConstraint,
		ChunkCache	chunkCache
	)

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Field Details

final FileFilter chunkFilter [package]

Initial value:

 new FileFilter() {
                
                public boolean accept(final File pathname) {
                        return pathname.isFile() && pathname.getName().endsWith(".data");
                }
        }

final Comparator<File> fileComparator [package]

Initial value:

 new Comparator<File>() {
                
                public int compare(final File o1, final File o2) { 
                        if(o1.isDirectory()) return o1.compareTo(o2);
                        String s1 = o1.getName().substring(0, o1.getName().indexOf('.'));
                        String s2 = o2.getName().substring(0, o2.getName().indexOf('.'));
                        return Integer.parseInt(s1) - Integer.parseInt(s2);

                }
        }