Metacat

/*

 * xmltables.sql -- Create or replace tables for storing XML in the db

 *

 *      Purpose: creates tables needed for XML database

 * 

 *      Created: 08 May 2001 

 *       Author: John Harris

 * Organization: National Center for Ecological Analysis and Synthesis

 *    Copyright: 2000 Regents of the University of California and the

 *               National Center for Ecological Analysis and Synthesis

 *

 *	this is sql script does the same as the sql script named 

 *	xmltables.sql except that this script is to be use to 

 *	create the database tables on a Postgresql backend rather

 *	than an Oracle Backend

 */

/*

 * Drop all of the objects in proper order

 */

set echo off

DROP SEQUENCE xml_nodes_id_seq;

DROP SEQUENCE xml_revisions_id_seq;

DROP SEQUENCE xml_catalog_id_seq;

DROP SEQUENCE xml_relation_id_seq;

DROP SEQUENCE xml_replication_id_seq;

DROP SEQUENCE accnum_uniqueid_seq;

DROP TABLE xml_index;

DROP TABLE xml_access;

DROP TABLE xml_revisions;

DROP TABLE xml_relation;

DROP TABLE xml_documents;

DROP TABLE xml_nodes;

DROP TABLE xml_replication;

DROP TABLE xml_catalog;

/*

 *Replication -- table to store servers that metacat is replicated to

 */

CREATE SEQUENCE xml_replication_id_seq;

CREATE TABLE xml_replication (

  serverid     INT8  default nextval('xml_replication_id_seq'), 

  server        VARCHAR(512),

  last_checked  DATE,

  replicate     INT8, 

  CONSTRAINT xml_replication_pk PRIMARY KEY (serverid)

);  

INSERT INTO xml_replication (serverid, server, replicate) VALUES ('1', 'localhost', '0');

/* 

 * Nodes -- table to store XML Nodes (both elements and attributes)

 */

CREATE TABLE xml_nodes (

	nodeid		INT8, 		-- the unique node id (pk)

	nodeindex	INT8,		-- order of nodes within parent

	nodetype	VARCHAR(20),	-- type (DOCUMENT, COMMENT, PI,

					-- ELEMENT, ATTRIBUTE, TEXT)

	nodename	VARCHAR(250),	-- the name of an element or attribute

	nodedata	VARCHAR(4000), 	-- the data for this node (e.g., 

					-- for TEXT it is the content)

	parentnodeid	INT8,		-- index of the parent of this node

	rootnodeid	INT8,		-- index of the root node of this tree

	docid		VARCHAR(250),	-- index to the document id

	date_created	DATE,

	date_updated	DATE,

   CONSTRAINT xml_nodes_pk PRIMARY KEY (nodeid),

   CONSTRAINT xml_nodes_root_fk 

		FOREIGN KEY (rootnodeid) REFERENCES xml_nodes,

   CONSTRAINT xml_nodes_parent_fk 

		FOREIGN KEY (parentnodeid) REFERENCES xml_nodes

);

/* 

 * Indexes of rootnodeid & parentnodeid in xml_nodes

 */

CREATE INDEX xml_nodes_idx1 ON xml_nodes (rootnodeid);

CREATE INDEX xml_nodes_idx2 ON xml_nodes (parentnodeid);

CREATE SEQUENCE xml_nodes_id_seq;

/* 

 * XML Catalog -- table to store all external sources for XML documents

 */

CREATE SEQUENCE xml_catalog_id_seq;

CREATE TABLE xml_catalog (

	catalog_id INT8 default nextval('xml_catalog_id_seq'), -- the id for this catalog entry

	entry_type	VARCHAR(500),	-- the type of this catalog entry

					-- (e.g., DTD, XSD, XSL)

	source_doctype	VARCHAR(500),	-- the source public_id for transforms

	target_doctype	VARCHAR(500),	-- the target public_id for transforms

	public_id	VARCHAR(500),	-- the unique id for this type

	system_id	VARCHAR(1000),	-- the local location of the object

   CONSTRAINT xml_catalog_pk PRIMARY KEY (catalog_id),

   CONSTRAINT xml_catalog_uk UNIQUE  (entry_type, source_doctype, target_doctype, public_id)

);

/* 

 * Documents -- table to store XML documents

 */

CREATE TABLE xml_documents (

	docid		VARCHAR(250),	-- the document id #

	rootnodeid	INT8,	-- reference to root node of the DOM

	docname		VARCHAR(100),	-- usually the root element name

	doctype		VARCHAR(100),	-- public id indicating document type

	user_owner	VARCHAR(100),	-- the user owned the document

	user_updated	VARCHAR(100),	-- the user updated the document

	server_location INT8,	-- the server on which this document resides

	rev 		INT8,   --the revision number of the document

	date_created	DATE,

	date_updated	DATE,

	public_access	INT8,	-- flag for public access

        catalog_id      INT8,	-- reference to xml_catalog 

     CONSTRAINT xml_documents_pk PRIMARY KEY (docid),

     CONSTRAINT xml_documents_rep_fk

     		FOREIGN KEY (server_location) REFERENCES xml_replication, 

    CONSTRAINT xml_documents_root_fk 

		FOREIGN KEY (rootnodeid) REFERENCES xml_nodes,

   CONSTRAINT xml_documents_catalog_fk 

		FOREIGN KEY (catalog_id) REFERENCES xml_catalog

);

/* 

 * Index of <docid,doctype> in xml_document

 */

CREATE INDEX xml_documents_idx1 ON xml_documents (docid, doctype);

/* 

 * Revised Documents -- table to store XML documents saved after an UPDATE

 *                    or DELETE

 */

CREATE SEQUENCE xml_revisions_id_seq;

CREATE TABLE xml_revisions (

	revisionid	INT8  default nextval('xml_revisions_id_seq'), -- the revision number we are saving

	docid		VARCHAR(250),	-- the document id #

	rootnodeid	INT8,	-- reference to root node of the DOM

	docname		VARCHAR(100),	-- usually the root element name

	doctype		VARCHAR(100),	-- public id indicating document type

	user_owner	VARCHAR(100),

	user_updated	VARCHAR(100),

	server_location INT8,

	rev		INT8,

	date_created	DATE,

	date_updated	DATE,

	public_access	INT8,	-- flag for public access

        catalog_id      INT8,	-- reference to xml_catalog 

   CONSTRAINT xml_revisions_pk PRIMARY KEY (revisionid),

   CONSTRAINT xml_revisions_rep_fk

		FOREIGN KEY (server_location) REFERENCES xml_replication,

   CONSTRAINT xml_revisions_root_fk 

		FOREIGN KEY (rootnodeid) REFERENCES xml_nodes,

   CONSTRAINT xml_revisions_catalog_fk 

		FOREIGN KEY (catalog_id) REFERENCES xml_catalog

);

/* 

 * ACL -- table to store ACL for XML documents by principals

 */

CREATE TABLE xml_access (

	docid		VARCHAR(250),	-- the document id #

	accessfileid	VARCHAR(250),	-- the document id # for the access file

	principal_name	VARCHAR(100),	-- name of user, group, etc.

	permission	INT8,		-- "read", "write", "all"

	perm_type	VARCHAR(32),	-- "allowed" or "denied"

	perm_order	VARCHAR(32),	-- "allow first" or "deny first"

	begin_time	DATE,		-- the time that permission begins

	end_time	DATE,		-- the time that permission ends

	ticket_count	INT8,		-- ticket counter for that permission

   CONSTRAINT xml_access_ck CHECK (begin_time < end_time),

   CONSTRAINT xml_access_accessfileid_fk 

		FOREIGN KEY (accessfileid) REFERENCES xml_documents

);

/* 

 * Index of Nodes -- table to store precomputed paths through tree for 

 * quick searching in structured searches

 */

CREATE TABLE xml_index (

	nodeid		INT8,		-- the unique node id

	path		VARCHAR(200),	-- precomputed path through tree

	docid		VARCHAR(250),	-- index to the document id

	doctype		VARCHAR(100),	-- public id indicating document type

        parentnodeid    INT8,     -- id of the parent of the node represented

					-- by this row

   CONSTRAINT xml_index_pk PRIMARY KEY (nodeid,path),

   CONSTRAINT xml_index_nodeid_fk FOREIGN KEY (nodeid) REFERENCES xml_nodes,

   CONSTRAINT xml_index_docid_fk 

		FOREIGN KEY (docid) REFERENCES xml_documents

);

/* 

 * Index of the paths in xml_index 

 */

CREATE INDEX xml_index_idx1 ON xml_index (path);

/* 

 * Sequence to get uniqueID for Accession #

 */

CREATE SEQUENCE accnum_uniqueid_seq;

CREATE SEQUENCE xml_relation_id_seq;

CREATE TABLE xml_relation (

	relationid    INT8 default nextval('xml_relation_id_seq')  PRIMARY KEY, -- unique id

	docid         VARCHAR(250) ,         -- the docid of the package file

	                                      -- that this relation came from

	subject       VARCHAR(512) NOT NULL, -- the subject of the relation

	subdoctype    VARCHAR(128),         	-- the doctype of the subject

	relationship  VARCHAR(128)  NOT NULL,-- the relationship type

	object        VARCHAR(512) NOT NULL, -- the object of the relation

	objdoctype    VARCHAR(128),          -- the doctype of the object

	CONSTRAINT xml_relation_uk UNIQUE (subject, relationship, object),

	CONSTRAINT xml_relation_docid_fk 

		FOREIGN KEY (docid) REFERENCES xml_documents

  );