looks neat, but I presume this is the one file one blob version? or am I wrong (the parts can be clustered with the link field, but that would require a lot of duplicate inode data?)
(FS attributes can be meta data for the root-file) I'll look into hybernate3 Wouter On Mon, 28 Mar 2005 07:13:45 +0200, Mario Ivankovits <[EMAIL PROTECTED]> wrote: > Hello Wouter! > > I think we should split files and contents at least for performance > reason. A database might cache a table without blob better and it is > possible to put the content into another tablespace (oracle). > > What about using inodes? > > CREATE TABLE Files ( > parent_inode numeric(22) not null, > inode numeric(22) not null, > name VARCHAR(200) NOT NULL, > type numeric(1) not null, > link_inode numeric(22) not null, > lastModified TIMESTAMP NOT NULL, > created TIMESTAMP NOT NULL, > lastAccessed TIMESTAMP NOT NULL, > ); > > PRIMARY KEY parent_inode, inode, > ALTERNATE unique key parent_inode, name > type: 0=file, 1=directory, 2=link > The root inode is "0" per definition. > > CREATE TABLE Contents ( > inode numeric(22) not null, > content LONGBLOB NULL, > ); > > PRIMARY KEY inode > > CREATE TABLE MetaAttributes ( > inode numeric(22) not null, > id numeric(22) not null, > key varchar(200), > value blob > ); > > PRIMARY KEY inode, id > > I am not sure if the value should really be blob but what if one would > store a serialized java object as attribute (filehandler ;-) > > To answer Rami's mail, I think the url should be something like: > dbfs://user:[EMAIL PROTECTED]:dbname/ > So one filesystem per database instance. I think the schema could be > taken from the user and if this is not sufficient we could add a > filesystemconfig where one could explicitely set the schema. > > And yes. All the database stuff should be abstracted and put into its > own (replaceable) class. Thus we could try to provide specialised > versions for different databases - or provide one using hibernate3 and > get rid of the blob/clob handling too. This is something I could try to do. > > Ciao, > Mario > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > -- Gmail rules --------------------------------------------------------------------- Wouter De Borger --------------------------------------------------------------------- if life was a joke of eternity, what would you do? All I want is a kind word, a warm bed and unlimited power. --------------------------------------------------------------------- www.nosoftwarepatents.com --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
