Redland RDF Application Framework - Perl RDF::Redland::Storage Class

NAME

RDF::Redland::Storage - Redland RDF Storage Class

SYNOPSIS

  use RDF::Redland;
  my $storage=new RDF::Redland::Storage("hashes", "test", "new='yes',hash-type='memory'");
  ...

DESCRIPTION

Create objects for storing RDF::Redland::Model objects either persistently or in memory.

CONSTRUCTORS

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:
  dir='DIR'          Work in DIR directory when creating files.
  hash-type='TYPE'   Use the TYPE hash-type for I<hashes> storage.
                     Current defined types are 'memory' and 'bdb' 
                     but is dependent on the hash factories
                     available.
  mode='MODE'        File creation mode, default is (octal) 0644
                     Takes decimal (123), hex (0x123) or octal (0123).
  new='yes'          Create a new storage erasing any existing one (default).
  write='yes'        Provide write access to store (default)
                     otherwise is read only.

Example:

  $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.

SEE ALSO

the RDF::Redland::Model manpage

AUTHOR

Dave Beckett - http://purl.org/net/dajobe/


Copyright 2000-2003 Dave Beckett, Institute for Learning and Research Technology, University of Bristol