RDF::Redland::Storage - Redland RDF Storage Class
use RDF::Redland; my $storage=new RDF::Redland::Storage("hashes", "test", "new='yes',hash-type='memory'"); ...
Create objects for storing RDF::Redland::Model objects either persistently or in memory.
- new STORAGE_NAME NAME OPTIONS_STRING
Create a new RDF::Redland::Storage object for the storage factory named STORAGE_NAME with storage named NAME and storage options OPTIONS_STRING which are specific to the storage factory type.
The storage options are formatted in the form key1='value1',key2='value2' and the single quotes are required.
Currently defined storage options:
Create a new storage erasing any existing one (default).
Provide write access to store (default) otherwise is read only.
Work in DIR directory when creating files.
File creation mode, default is (octal) 0644 Takes decimal (123), hex (0x123) or octal (0123).
Enable statement contexts. Each statement can be stored with an optional context Node and the context retrieved after queries.
- hash-type='TYPE' (hashes storage only)
Use the TYPE hash-type for hashes storage. Current defined types are 'memory' and 'bdb' but is dependent on the hash factories available.
- index-predicates='yes' (hashes storage only)
Enable indexing from predicates to (subject,object) which can in particular be useful for rdf:type relations.
$storage=new RDF::Redland::Storage("hashes", "test", "new='yes',hash-type='bdb',dir='.'");
Creates a new storage of the hashes type (indexed hashes) named test (these will be file names or URIs if the storage is persistent) and with options new='yes',hash-type='bdb',dir='.' so a new storage is created with BerkeleyDB (BDB) key:value hashes i.e. persistent and in the current directory.
- new_from_storage STORAGE
Create a new RDF::Redland::Storage object from RDF::Redland::Storage STORAGE (copy constructor). The new storage may have a new name chosen by the storage factory.
Dave Beckett - http://purl.org/net/dajobe/