new

        my $fis = Plucene::Index::FieldInfos->new($dir_name);
        my $fis = Plucene::Index::FieldInfos->new($dir_name, $file);

This will create a new Plucene::Index::FieldInfos object with the passed directory and optional filename.

add

        $fis->add(Plucene::Document $doc, $indexed);
        $fis->add(Plucene::Index::FieldInfos $other_fis, $indexed);
        $fis->add($name, $indexed);

This will add the fields from a Plucene::Document or a Plucene::Index::FieldsInfos to the field infos file.

It is also possible to pass the name of a field and have it added to the file.

field_number

        my $field_number = $fis->field_number($name);

This will return the field number of the field with $name. If there is no match, then -1 is returned.

fields

        my @fields = $fis->fields;

This will return all the fields.

field_info

        my $field_info = $fis->field_info($name);

This will return the field info for the field called $name.

field_name

        my $field_name = $fis->field_name($number);

This will return the field name for the field whose number is $number.

size

        my $num_fields = $fis->size;

This returns the number of field info objects.

write

        $fis->write($path);

This will write the field info objects to $path.