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CREATE TABLE systemMetadata (
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   guid   VARCHAR2(2000),    -- the globally unique string identifier
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   serial_version VARCHAR2(256), --the serial version of the object
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   date_uploaded DATE, -- the date/time the document was first submitted
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   rights_holder VARCHAR2(250), --the user who has rights to the document, usually the first persons to upload it
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   checksum VARCHAR2(512), --the checksum of the doc using the given algorithm (see below)
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   checksum_algorithm VARCHAR2(250), --the algorithm used to calculate the checksum
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   origin_member_node VARCHAR2(250), --the member node where the document was first uploaded
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   authoritive_member_node VARCHAR2(250), --the member node that currently controls the document
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   date_modified DATE, -- the last date/time that the file was changed
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   submitter VARCHAR2(256), -- the user who originally submitted the doc
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   object_format VARCHAR2(256), --the format of the object
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   size VARCHAR2(256), --the size of the object
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   archived boolean,	 -- specifies whether this an archived object
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   replication_allowed boolean,	 -- replication allowed
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   number_replicas NUMBER(8), 	-- the number of replicas allowed
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   obsoletes   VARCHAR2(2000),    -- the identifier of the record that this replaces
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   obsoleted_by   VARCHAR2(2000),    -- the identifier of the record that replaces this record
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   CONSTRAINT systemMetadata_pk 
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		PRIMARY KEY (guid)
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)
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CREATE TABLE systemMetadataReplicationPolicy (
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	guid VARCHAR2(2000),	-- the globally unique string identifier of the object that the system metadata describes
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	member_node VARCHAR(250),	 -- replication member node
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	policy VARCHAR2(2000),	 -- the policy (preferred, blocked, etc...TBD)
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	CONSTRAINT systemMetadataReplicationPolicy_fk 
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		FOREIGN KEY (guid) REFERENCES systemMetadata DEFERRABLE
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);
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CREATE TABLE systemMetadataReplicationStatus (
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	guid VARCHAR2(2000),	-- the globally unique string identifier of the object that the system metadata describes
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	member_node VARCHAR(250),	 -- replication member node
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	status VARCHAR(250),	 -- replication status
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	date_verified DATE, 	-- the date replication was verified   
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	CONSTRAINT systemMetadataReplicationStatus_fk 
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		FOREIGN KEY (guid) REFERENCES systemMetadata DEFERRABLE
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);
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DROP TABLE IF EXISTS identifier;
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CREATE TABLE identifier (
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   guid   VARCHAR2(2000), -- the globally unique string identifier
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   docid  VARCHAR2(250),  -- the local document id #
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   rev    NUMBER(8)       -- the revision part of the local identifier
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);
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/**
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 * track the user-agent for the request
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 */
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ALTER TABLE access_log ADD COLUMN user_agent VARCHAR2(512);
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/*
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 * add the nodedatadate column to xml_nodes 
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 * TODO: load the data into it (java?)
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 */
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ALTER TABLE xml_nodes ADD COLUMN nodedatadate TIMESTAMP;
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ALTER TABLE xml_nodes_revisions ADD COLUMN nodedatadate TIMESTAMP;
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ALTER TABLE xml_path_index ADD COLUMN nodedatadate TIMESTAMP;
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CREATE INDEX xml_path_index_idx4 ON xml_path_index (nodedatadate);
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/*
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 * Register the new schema
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 */
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INSERT INTO xml_catalog (entry_type, public_id, system_id)
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  VALUES ('Schema', '@eml2_1_1namespace@', '/schema/eml-2.1.1/eml.xsd');
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/**
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 * Generate GUIDs for docid.rev
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 */
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INSERT INTO identifier (docid, rev, guid) 
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	SELECT docid, rev, docid || '.' || rev FROM xml_documents;
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INSERT INTO identifier (docid, rev, guid)
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	SELECT docid, revisionid, docid || '.' || revisionid 
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	FROM xml_revisions
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	WHERE docid || '.' || revisionid NOT IN (SELECT guid from identifier);
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/*
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 *  Allow guid in xml_access table (for system metadata)
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*/
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ALTER TABLE xml_access ADD COLUMN guid VARCHAR2(2000);
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/**
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 *  Expand accessfileid in xml_access table to hold guids
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 */
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ALTER TABLE xml_access ALTER COLUMN accessfileid TYPE VARCHAR2(2000);
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/**
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 * Upgrade xml_access records to use GUID from identifier table
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 * NOTE: This duplicates existing access rules for every revision of a document
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 */
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INSERT INTO xml_access (
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	guid, principal_name, permission, perm_type, perm_order, 
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	docid, accessfileid, begin_time, end_time, ticket_count, subtreeid, startnodeid, endnodeid
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)
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	SELECT 
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		id.guid, xa.principal_name, xa.permission, xa.perm_type, xa.perm_order, 
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		xa.docid, xa.accessfileid, xa.begin_time, xa.end_time, xa.ticket_count, xa.subtreeid, xa.startnodeid, xa.endnodeid
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	FROM identifier id, xml_access xa
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	WHERE id.docid = xa.docid;
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/**
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 * Include inline data access rows -- they have a special guid: 'scope.docid.rev.index'
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 */
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INSERT INTO xml_access (
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	guid, principal_name, permission, perm_type, perm_order, 
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	docid, accessfileid, begin_time, end_time, ticket_count, subtreeid, startnodeid, endnodeid
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)
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	SELECT 
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		docid, principal_name, permission, perm_type, perm_order, 
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		docid, accessfileid, begin_time, end_time, ticket_count, subtreeid, startnodeid, endnodeid
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	FROM xml_access
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	WHERE docid like '%.%.%.%';
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/**
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 * Update the accessfileid to use guid
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 * NOTE: uses the last revision's guid as the new accessfileid
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 */
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CREATE TABLE max_identifier (guid VARCHAR2(2000), docid VARCHAR2(250), rev NUMBER(8));
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/** insert the max rev identifier for each document **/
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INSERT INTO max_identifier (docid, rev, guid)
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SELECT docid, MAX(rev), docid || '.' || MAX(rev)
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FROM identifier
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GROUP BY docid
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/** only need to join on docid since there is a single row for the max docid **/
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UPDATE xml_access
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SET accessfileid = maxid.guid
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FROM max_identifier maxid, xml_access xa
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WHERE xa.accessfileid = maxid.docid
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AND xa.guid IS NOT null
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DROP TABLE max_identifier;
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/**
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 * Remove old access rules
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 */
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DELETE FROM xml_access WHERE guid is null;
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/**
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 * clean up the xml_access table
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 */
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ALTER TABLE xml_access DROP COLUMN docid;
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/*
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 * update the database version
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 */
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UPDATE db_version SET status=0;
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INSERT INTO db_version (version, status, date_created) 
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  VALUES ('2.0.0', 1, CURRENT_DATE);
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