def add_spelling(ix, fieldnames, commit=True):
"""Adds spelling files to an existing index that was created without
them, and modifies the schema so the given fields have the ``spelling``
attribute. Only works on filedb indexes.
>>> ix = index.open_dir("testindex")
>>> add_spelling(ix, ["content", "tags"])
:param ix: a :class:`whoosh.filedb.fileindex.FileIndex` object.
:param fieldnames: a list of field names to create word graphs for.
:param force: if True, overwrites existing word graph files. This is only
useful for debugging.
"""
from whoosh.automata import fst
from whoosh.reading import SegmentReader
writer = ix.writer()
storage = writer.storage
schema = writer.schema
segments = writer.segments
for segment in segments:
ext = segment.codec().FST_EXT
r = SegmentReader(storage, schema, segment)
f = segment.create_file(storage, ext)
gw = fst.GraphWriter(f)
for fieldname in fieldnames:
gw.start_field(fieldname)
for word in r.lexicon(fieldname):
gw.insert(word)
gw.finish_field()
gw.close()
for fieldname in fieldnames:
schema[fieldname].spelling = True
if commit:
writer.commit(merge=False)
def add_spelling(ix, fieldnames, commit=True):
"""Adds spelling files to an existing index that was created without
them, and modifies the schema so the given fields have the ``spelling``
attribute. Only works on filedb indexes.
>>> ix = index.open_dir("testindex")
>>> add_spelling(ix, ["content", "tags"])
:param ix: a :class:`whoosh.filedb.fileindex.FileIndex` object.
:param fieldnames: a list of field names to create word graphs for.
:param force: if True, overwrites existing word graph files. This is only
useful for debugging.
"""
from whoosh.automata import fst
from whoosh.reading import SegmentReader
writer = ix.writer()
storage = writer.storage
schema = writer.schema
segments = writer.segments
for segment in segments:
ext = segment.codec().FST_EXT
r = SegmentReader(storage, schema, segment)
f = segment.create_file(storage, ext)
gw = fst.GraphWriter(f)
for fieldname in fieldnames:
gw.start_field(fieldname)
for word in r.lexicon(fieldname):
gw.insert(word)
gw.finish_field()
gw.close()
for fieldname in fieldnames:
schema[fieldname].spelling = True
if commit:
writer.commit(merge=False)
