Lucy::Plan::Schema - User-created specification for an inverted index.
use Lucy::Plan::Schema; use Lucy::Plan::FullTextType; use Lucy::Analysis::EasyAnalyzer; my $schema = Lucy::Plan::Schema->new; my $easyanalyzer = Lucy::Analysis::EasyAnalyzer->new( language => 'en', ); my $type = Lucy::Plan::FullTextType->new( analyzer => $easyanalyzer, ); $schema->spec_field( name => 'title', type => $type ); $schema->spec_field( name => 'content', type => $type );
A Schema is a specification which indicates how other entities should interpret the raw data in an inverted index and interact with it.
Once an actual index has been created using a particular Schema, existing field definitions may not be changed. However, it is possible to add new fields during subsequent indexing sessions.
my $schema = Lucy::Plan::Schema->new;
Constructor. Takes no arguments.
my $architecture = $schema->architecture();
Factory method which creates an Architecture object for this index.
$schema->spec_field( name => $name, # required type => $type, # required );
Define the behavior of a field by associating it with a FieldType.
If this method has already been called for the supplied
field, it will merely test to verify that the supplied FieldType equals() the existing one.
my $field_type = $schema->fetch_type($field);
Return the FieldType for the specified field. If the field can’t be found, return undef.
my $similarity = $schema->fetch_sim($field); my $similarity = $schema->fetch_sim(); # default: undef
Return the Similarity for the specified field, or undef if either the field can’t be found or it isn’t associated with a Similarity.
my $int = $schema->num_fields();
Return the number of fields currently defined.
my $arrayref = $schema->all_fields();
Return all the Schema’s field names as an array.
my $architecture = $schema->get_architecture();
Return the Schema instance’s internal Architecture object.
my $similarity = $schema->get_similarity();
Return the Schema instance’s internal Similarity object.
Lucy::Plan::Schema isa Clownfish::Obj.