Winton Davies wrote:
> I've an index that should fit in RAM -- but I need it stored as a
> file. Is there anyway to read in the regular directory in the the
> RAMDirectory and then create an IndexSearcher from this ? It seems
> that there should be, but I can't find a method to construct a
> RAMDirectory from a regular Directory ?
Look at IndexWriter.addIndexes( Directory[] dirs )
You can store your RAMDirectory into a new FSDirectory and load a
FSDircetory into a new RAMDirectory.
Something like:
Directory loadIndex() {
Directory fs = FSDirectory.getDirectory( pathToIndex, false );
RAMDirectory ramdir = new RAMDircetory();
IndexWriter iw = new IndexWriter( ramdir, myAnalyzer, false );
iw.addIndexes( new Directory[]{fs} );
iw.close();
fs.close();
return ramdir;
}
void storeIndex( Directory ramdir ) {
Directory fs = FSDirectory.getDirectory( pathToIndex, true ); // create
a new Index here
IndexWriter iw = new IndexWriter( fs, myAnalyzer, true );
iw.addIndexes( new Directory[]{ramdir} );
iw.close();
fs.close();
}
HTH,
Gerhard
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