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Revision 123

Added by Matt Jones over 20 years ago

Modifying storage model to use DOM TEXT nodes

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xmltables.sql
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 *      Created: 12 September 1999
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 *       Author: Matt Jones
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 * Organization: National Center for Ecological Analysis and Synthesis
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 *      Version: '$Id$'
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 *    Copyright: 2000 Regents of the University of California and the
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 *               National Center for Ecological Analysis and Synthesis
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 *  For Details: http://www.nceas.ucsb.edu/
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 *    File Info: '$Id$'
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 *
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 */
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......
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set echo off
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DROP SEQUENCE xml_nodes_id_seq;
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DROP SEQUENCE xml_entity_id_seq;
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DROP SEQUENCE xml_catalog_id_seq;
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DROP SEQUENCE xml_documents_id_seq;
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DROP TRIGGER xml_nodes_before_insert;
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DROP TRIGGER xml_documents_before_insert;
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DROP TRIGGER xml_catalog_before_insert;
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DROP TABLE xml_index;
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DROP TABLE xml_catalog;
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DROP TABLE xml_documents;
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DROP TABLE xml_nodes;
......
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 * Nodes -- table to store XML Nodes (both elements and attributes)
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 */
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CREATE TABLE xml_nodes (
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	nodeid		NUMBER(20),
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	parentnodeid	NUMBER(20),
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	nodeindex	NUMBER(10),
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	nodetype	VARCHAR2(20),
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	nodename	VARCHAR2(100),
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	nodedata	VARCHAR2(4000),
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	nodeid		NUMBER(20),	-- the unique node id (pk)
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	nodeindex	NUMBER(10),	-- order of nodes within parent
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	nodetype	VARCHAR2(20),	-- type (DOCUMENT, COMMENT, PI,
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					-- ELEMENT, ATTRIBUTE, TEXT)
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	nodename	VARCHAR2(250),	-- the name of an element or attribute
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	nodedata	VARCHAR2(4000), -- the data for this node (e.g., 
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					-- for TEXT it is the content)
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	parentnodeid	NUMBER(20),	-- index of the parent of this node
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	rootnodeid	NUMBER(20),	-- index of the root node of this tree
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	docid		NUMBER(20),	-- index to the document id
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	date_created	DATE,
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	date_updated	DATE,
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   CONSTRAINT xml_nodes_pk PRIMARY KEY (nodeid),
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   CONSTRAINT xml_nodes_root_fk 
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		FOREIGN KEY (rootnodeid) REFERENCES xml_nodes,
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   CONSTRAINT xml_nodes_parent_fk 
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		FOREIGN KEY (parentnodeid) REFERENCES xml_nodes
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);
......
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 * Documents -- table to store XML documents
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 */
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CREATE TABLE xml_documents (
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	docid		NUMBER(20),
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	rootnodeid	NUMBER(20),
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	docname		VARCHAR2(100),
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	doctype		VARCHAR2(100),
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	doctitle	VARCHAR2(1000),
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	docid		NUMBER(20),	-- the document id #
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	rootnodeid	NUMBER(20),	-- refernce to the root node of the DOM
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	docname		VARCHAR2(100),	-- usually the root element name
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	doctype		VARCHAR2(100),	-- public id indicating document type
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	doctitle	VARCHAR2(1000),	-- title of document if exists
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	date_created	DATE,
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	date_updated	DATE,
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   CONSTRAINT xml_documents_pk PRIMARY KEY (docid),
......
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 * XML Catalog -- table to store all external sources for XML documents
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 */
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CREATE TABLE xml_catalog (
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	entity_id	NUMBER(20),
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	entity_name	VARCHAR2(100),
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	entity_type	VARCHAR2(20),
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	source_doctype	VARCHAR2(100),
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	target_doctype	VARCHAR2(100),
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	public_id	VARCHAR2(100),
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	system_id	VARCHAR2(1000),
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	date_created	DATE,
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	date_updated	DATE,
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   CONSTRAINT xml_catalog_pk PRIMARY KEY (entity_id),
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   CONSTRAINT xml_catalog_uk UNIQUE (entity_type, source_doctype, target_doctype, public_id)
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	catalog_id	NUMBER(20),	-- the id for this catalog entry
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	entry_type	VARCHAR2(500),	-- the type of this catalog entry
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					-- (e.g., DTD, XSD, XSL)
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	source_doctype	VARCHAR2(500),	-- the source public_id for transforms
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	target_doctype	VARCHAR2(500),	-- the target public_id for transforms
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	public_id	VARCHAR2(500),	-- the unique id for this type
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	system_id	VARCHAR2(1000),	-- the local location of the object
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   CONSTRAINT xml_catalog_pk PRIMARY KEY (catalog_id)
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   -- CONSTRAINT xml_catalog_uk UNIQUE (entry_type, source_doctype, target_doctype, public_id)
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);
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CREATE SEQUENCE xml_entity_id_seq;
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CREATE SEQUENCE xml_catalog_id_seq;
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CREATE TRIGGER xml_catalog_before_insert
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BEFORE INSERT ON xml_catalog FOR EACH ROW
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BEGIN
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  SELECT xml_entity_id_seq.nextval
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    INTO :new.entity_id
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  SELECT xml_catalog_id_seq.nextval
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    INTO :new.catalog_id
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    FROM dual;
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END;
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/
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/* 
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 * Index of Nodes -- table to store precomputed paths through tree for 
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 * quick searching in structured searches
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 */
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CREATE TABLE xml_index (
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	nodeid		NUMBER(20),	-- the unique node id
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	path		VARCHAR2(20),	-- precomputed path through tree
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   CONSTRAINT xml_index_pk PRIMARY KEY (nodeid,path),
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   CONSTRAINT xml_nodes_fk FOREIGN KEY (nodeid) REFERENCES xml_nodes
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);

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