--- /dev/null
+-- Copyright 2009-2012, Equinox Software, Inc.
+--
+-- This program is free software; you can redistribute it and/or
+-- modify it under the terms of the GNU General Public License
+-- as published by the Free Software Foundation; either version 2
+-- of the License, or (at your option) any later version.
+--
+-- This program is distributed in the hope that it will be useful,
+-- but WITHOUT ANY WARRANTY; without even the implied warranty of
+-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+-- GNU General Public License for more details.
+--
+-- You should have received a copy of the GNU General Public License
+-- along with this program; if not, write to the Free Software
+-- Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+
+--------------------------------------------------------------------------
+-- An example of how to use:
+--
+-- DROP SCHEMA foo CASCADE; CREATE SCHEMA foo;
+-- \i base.sql
+-- SELECT migration_tools.init('foo');
+-- SELECT migration_tools.build('foo');
+-- SELECT * FROM foo.fields_requiring_mapping;
+-- \d foo.actor_usr
+-- create some incoming ILS specific staging tables, like CREATE foo.legacy_items ( l_barcode TEXT, .. ) INHERITS (foo.asset_copy);
+-- Do some mapping, like UPDATE foo.legacy_items SET barcode = TRIM(BOTH ' ' FROM l_barcode);
+-- Then, to move into production, do things like:
+-- insert into asset.copy select * from asset_copy where id not in (select id from asset_copy_legacy where not x_migrate);
+
+DROP SCHEMA IF EXISTS migration_tools CASCADE;
+CREATE SCHEMA migration_tools;
+
+CREATE OR REPLACE FUNCTION migration_tools.production_tables (TEXT) RETURNS TEXT[] AS $$
+ DECLARE
+ migration_schema ALIAS FOR $1;
+ output RECORD;
+ BEGIN
+ FOR output IN
+ EXECUTE 'SELECT string_to_array(value,'','') AS tables FROM ' || migration_schema || '.config WHERE key = ''production_tables'';'
+ LOOP
+ RETURN output.tables;
+ END LOOP;
+ END;
+$$ LANGUAGE PLPGSQL STRICT STABLE;
+
+CREATE OR REPLACE FUNCTION migration_tools.init (TEXT) RETURNS VOID AS $$
+ DECLARE
+ migration_schema ALIAS FOR $1;
+ sql TEXT;
+ BEGIN
+ EXECUTE 'DROP TABLE IF EXISTS ' || migration_schema || '.config;' );
+ EXECUTE 'CREATE TABLE ' || migration_schema || '.config ( key TEXT UNIQUE, value TEXT);' );
+ EXECUTE 'INSERT INTO ' || migration_schema || '.config (key,value) VALUES ( ''production_tables'', ''asset.call_number,asset.call_number_prefix,asset.call_number_suffix,asset.copy_location,asset.copy,asset.copy_alert,asset.stat_cat,asset.stat_cat_entry,asset.stat_cat_entry_copy_map,asset.copy_note,actor.usr,actor.card,actor.usr_address,actor.stat_cat,actor.stat_cat_entry,actor.stat_cat_entry_usr_map,actor.usr_note,actor.usr_standing_penalty,actor.usr_setting,action.circulation,action.hold_request,action.hold_notification,action.hold_request_note,action.hold_transit_copy,action.transit_copy,money.grocery,money.billing,money.cash_payment,money.forgive_payment,acq.provider,acq.provider_address,acq.provider_note,acq.provider_contact,acq.provider_contact_address,acq.fund,acq.fund_allocation,acq.fund_tag,acq.fund_tag_map,acq.funding_source,acq.funding_source_credit,acq.lineitem,acq.purchase_order,acq.po_item,acq.invoice,acq.invoice_item,acq.invoice_entry,acq.lineitem_detail,acq.fund_debit,acq.fund_transfer,acq.po_note,config.circ_matrix_matchpoint,config.circ_matrix_limit_set_map,config.hold_matrix_matchpoint,asset.copy_tag,asset.copy_tag_copy_map,config.copy_tag_type,serial.item,serial.item_note,serial.record_entry,biblio.record_entry'' );' );
+ END;
+$$ LANGUAGE PLPGSQL STRICT VOLATILE;
+
+CREATE OR REPLACE FUNCTION migration_tools.build (TEXT) RETURNS VOID AS $$
+ DECLARE
+ migration_schema ALIAS FOR $1;
+ production_tables TEXT[];
+ BEGIN
+ SELECT migration_tools.production_tables(migration_schema) INTO STRICT production_tables;
+ PERFORM migration_tools.build_base_staging_tables(migration_schema,production_tables);
+ EXECUTE 'CREATE UNIQUE INDEX ' || migration_schema || '_patron_barcode_key ON ' || migration_schema || '.actor_card ( barcode );' );
+ EXECUTE 'CREATE UNIQUE INDEX ' || migration_schema || '_patron_usrname_key ON ' || migration_schema || '.actor_usr ( usrname );' );
+ EXECUTE 'CREATE UNIQUE INDEX ' || migration_schema || '_copy_barcode_key ON ' || migration_schema || '.asset_copy ( barcode );' );
+ EXECUTE 'CREATE UNIQUE INDEX ' || migration_schema || '_copy_id_key ON ' || migration_schema || '.asset_copy ( id );' );
+ EXECUTE 'CREATE INDEX ' || migration_schema || '_callnum_record_idx ON ' || migration_schema || '.asset_call_number ( record );' );
+ EXECUTE 'CREATE INDEX ' || migration_schema || '_callnum_upper_label_id_lib_idx ON ' || migration_schema || '.asset_call_number ( UPPER(label),id,owning_lib );' );
+ EXECUTE 'CREATE UNIQUE INDEX ' || migration_schema || '_callnum_label_once_per_lib ON ' || migration_schema || '.asset_call_number ( record,owning_lib,label,prefix,suffix );' );
+ END;
+$$ LANGUAGE PLPGSQL STRICT VOLATILE;
+
+CREATE OR REPLACE FUNCTION migration_tools.build_base_staging_tables (TEXT,TEXT[]) RETURNS VOID AS $$
+ DECLARE
+ migration_schema ALIAS FOR $1;
+ production_tables ALIAS FOR $2;
+ BEGIN
+ FOR i IN array_lower(production_tables,1) .. array_upper(production_tables,1) LOOP
+ PERFORM migration_tools.build_specific_base_staging_table(migration_schema,production_tables[i]);
+ END LOOP;
+ END;
+$$ LANGUAGE PLPGSQL STRICT VOLATILE;
+
+CREATE OR REPLACE FUNCTION migration_tools.build_specific_base_staging_table (TEXT,TEXT) RETURNS VOID AS $$
+ DECLARE
+ migration_schema ALIAS FOR $1;
+ production_table ALIAS FOR $2;
+ base_staging_table TEXT;
+ columns RECORD;
+ BEGIN
+ base_staging_table = REPLACE( production_table, '.', '_' );
+ EXECUTE 'CREATE TABLE ' || migration_schema || '.' || base_staging_table || ' ( LIKE ' || production_table || ' INCLUDING DEFAULTS EXCLUDING CONSTRAINTS );' );
+ FOR columns IN
+ SELECT table_schema, table_name, column_name, data_type
+ FROM information_schema.columns
+ WHERE table_schema = migration_schema AND table_name = base_staging_table AND is_nullable = 'NO' AND column_default IS NULL
+ LOOP
+ EXECUTE( $1, 'ALTER TABLE ' || columns.table_schema || '.' || columns.table_name || ' ALTER COLUMN ' || columns.column_name || ' DROP NOT NULL;' );
+ END LOOP;
+ END;
+$$ LANGUAGE PLPGSQL STRICT VOLATILE;
+
+CREATE OR REPLACE FUNCTION migration_tools.create_linked_legacy_table_from (TEXT,TEXT,TEXT) RETURNS VOID AS $$
+ DECLARE
+ migration_schema ALIAS FOR $1;
+ parent_table ALIAS FOR $2;
+ source_table ALIAS FOR $3;
+ columns RECORD;
+ create_sql TEXT;
+ insert_sql TEXT;
+ column_list TEXT := '';
+ column_count INTEGER := 0;
+ BEGIN
+ create_sql := 'CREATE TABLE ' || migration_schema || '.' || parent_table || '_legacy ( ';
+ FOR columns IN
+ SELECT table_schema, table_name, column_name, data_type
+ FROM information_schema.columns
+ WHERE table_schema = migration_schema AND table_name = source_table
+ LOOP
+ column_count := column_count + 1;
+ if column_count > 1 then
+ create_sql := create_sql || ', ';
+ column_list := column_list || ', ';
+ end if;
+ create_sql := create_sql || columns.column_name || ' ';
+ if columns.data_type = 'ARRAY' then
+ create_sql := create_sql || 'TEXT[]';
+ else
+ create_sql := create_sql || columns.data_type;
+ end if;
+ column_list := column_list || columns.column_name;
+ END LOOP;
+ create_sql := create_sql || ' ) INHERITS ( ' || migration_schema || '.' || parent_table || ' );';
+ --RAISE INFO 'create_sql = %', create_sql;
+ EXECUTE create_sql;
+ insert_sql := 'INSERT INTO ' || migration_schema || '.' || parent_table || '_legacy (' || column_list || ') SELECT ' || column_list || ' FROM ' || migration_schema || '.' || source_table || ';';
+ --RAISE INFO 'insert_sql = %', insert_sql;
+ EXECUTE insert_sql;
+ END;
+$$ LANGUAGE PLPGSQL STRICT VOLATILE;
+
+CREATE OR REPLACE FUNCTION migration_tools.attempt_cast (TEXT, TEXT) RETURNS TEXT AS $$
+ DECLARE
+ attempt_value ALIAS FOR $1;
+ datatype ALIAS FOR $2;
+ BEGIN
+ EXECUTE 'SELECT ' || quote_literal(attempt_value) || '::' || datatype || ' AS a;';
+ RETURN attempt_value;
+ EXCEPTION
+ WHEN OTHERS THEN RETURN NULL;
+ END;
+$$ LANGUAGE PLPGSQL STRICT STABLE;
+
+CREATE OR REPLACE FUNCTION migration_tools.attempt_date (TEXT,TEXT) RETURNS DATE AS $$
+ DECLARE
+ attempt_value ALIAS FOR $1;
+ fail_value ALIAS FOR $2;
+ output DATE;
+ BEGIN
+ FOR output IN
+ EXECUTE 'SELECT ' || quote_literal(REGEXP_REPLACE(attempt_value,'^(\d\d)(\d\d)(\d\d)$','\1-\2-\3')) || '::date AS a;'
+ LOOP
+ RETURN output;
+ END LOOP;
+ EXCEPTION
+ WHEN OTHERS THEN
+ FOR output IN
+ EXECUTE 'SELECT ' || quote_literal(fail_value) || '::date AS a;'
+ LOOP
+ RETURN output;
+ END LOOP;
+ END;
+$$ LANGUAGE PLPGSQL STRICT STABLE;
+
+CREATE OR REPLACE FUNCTION migration_tools.attempt_timestamptz (TEXT,TEXT) RETURNS TIMESTAMPTZ AS $$
+ DECLARE
+ attempt_value ALIAS FOR $1;
+ fail_value ALIAS FOR $2;
+ output TIMESTAMPTZ;
+ BEGIN
+ FOR output IN
+ EXECUTE 'SELECT ' || quote_literal(attempt_value) || '::TIMESTAMPTZ AS a;'
+ LOOP
+ RETURN output;
+ END LOOP;
+ EXCEPTION
+ WHEN OTHERS THEN
+ FOR output IN
+ EXECUTE 'SELECT ' || quote_literal(fail_value) || '::TIMESTAMPTZ AS a;'
+ LOOP
+ RETURN output;
+ END LOOP;
+ END;
+$$ LANGUAGE PLPGSQL STRICT STABLE;
+
+CREATE OR REPLACE FUNCTION migration_tools.attempt_money (TEXT,TEXT) RETURNS NUMERIC(8,2) AS $$
+ DECLARE
+ attempt_value ALIAS FOR $1;
+ fail_value ALIAS FOR $2;
+ output NUMERIC(8,2);
+ BEGIN
+ FOR output IN
+ EXECUTE 'SELECT ' || quote_literal(REPLACE(REPLACE(attempt_value,'$',''),',','')) || '::NUMERIC(8,2) AS a;'
+ LOOP
+ RETURN output;
+ END LOOP;
+ EXCEPTION
+ WHEN OTHERS THEN
+ FOR output IN
+ EXECUTE 'SELECT ' || quote_literal(fail_value) || '::NUMERIC(8,2) AS a;'
+ LOOP
+ RETURN output;
+ END LOOP;
+ END;
+$$ LANGUAGE PLPGSQL STRICT STABLE;
+
+CREATE OR REPLACE FUNCTION migration_tools.attempt_money6 (TEXT,TEXT) RETURNS NUMERIC(6,2) AS $$
+ DECLARE
+ attempt_value ALIAS FOR $1;
+ fail_value ALIAS FOR $2;
+ output NUMERIC(6,2);
+ BEGIN
+ FOR output IN
+ EXECUTE 'SELECT ' || quote_literal(REPLACE(REPLACE(attempt_value,'$',''),',','')) || '::NUMERIC(6,2) AS a;'
+ LOOP
+ RETURN output;
+ END LOOP;
+ EXCEPTION
+ WHEN OTHERS THEN
+ FOR output IN
+ EXECUTE 'SELECT ' || quote_literal(fail_value) || '::NUMERIC(6,2) AS a;'
+ LOOP
+ RETURN output;
+ END LOOP;
+ END;
+$$ LANGUAGE PLPGSQL STRICT STABLE;
+
+CREATE OR REPLACE FUNCTION migration_tools.attempt_money_from_pennies (TEXT,TEXT) RETURNS NUMERIC(8,2) AS $$
+ DECLARE
+ attempt_value ALIAS FOR $1;
+ fail_value ALIAS FOR $2;
+ output NUMERIC(8,2);
+ BEGIN
+ IF length(regexp_replace(attempt_value,'^0+','')) > 10 THEN
+ RAISE EXCEPTION 'too many digits';
+ END IF;
+ FOR output IN
+ EXECUTE 'SELECT ' || quote_literal((left(lpad(regexp_replace(attempt_value,'^0+',''),10,'0'),-2) || '.' || right(lpad(regexp_replace(attempt_value,'^0+',''),10,'0'),2))::numeric(8,2)) || '::NUMERIC(8,2) AS a;'
+ LOOP
+ RETURN output;
+ END LOOP;
+ EXCEPTION
+ WHEN OTHERS THEN
+ FOR output IN
+ EXECUTE 'SELECT ' || quote_literal(fail_value) || '::NUMERIC(8,2) AS a;'
+ LOOP
+ RETURN output;
+ END LOOP;
+ END;
+$$ LANGUAGE PLPGSQL STRICT STABLE;
+
+CREATE OR REPLACE FUNCTION migration_tools.attempt_money_from_pennies6 (TEXT,TEXT) RETURNS NUMERIC(6,2) AS $$
+ DECLARE
+ attempt_value ALIAS FOR $1;
+ fail_value ALIAS FOR $2;
+ output NUMERIC(6,2);
+ BEGIN
+ IF length(regexp_replace(attempt_value,'^0+','')) > 8 THEN
+ RAISE EXCEPTION 'too many digits';
+ END IF;
+ FOR output IN
+ EXECUTE 'SELECT ' || quote_literal((left(lpad(regexp_replace(attempt_value,'^0+',''),8,'0'),-2) || '.' || right(lpad(regexp_replace(attempt_value,'^0+',''),8,'0'),2))::numeric(6,2)) || '::NUMERIC(6,2) AS a;'
+ LOOP
+ RETURN output;
+ END LOOP;
+ EXCEPTION
+ WHEN OTHERS THEN
+ FOR output IN
+ EXECUTE 'SELECT ' || quote_literal(fail_value) || '::NUMERIC(6,2) AS a;'
+ LOOP
+ RETURN output;
+ END LOOP;
+ END;
+$$ LANGUAGE PLPGSQL STRICT STABLE;
+
projects / migration-tools.git / blobdiff