Plucene::Index::FieldInfos - a collection of FieldInfo objects

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

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

	$fis->write($path);

	my @fields = $fis->fields;

	my $field_number = $fis->field_number($name);
	my   $field_info = $fis->field_info($name);
	my   $field_name = $fis->field_name($number);
	my   $num_fields = $fis->size;

This is a collection of field info objects, which happen to live in the field infos file.

	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.

	$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.

	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.

	my @fields = $fis->fields;

This will return all the fields.

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

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

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

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

	my $num_fields = $fis->size;

This returns the number of field info objects.

	$fis->write($path);

This will write the field info objects to $path.