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70 lines
1.6 KiB
PHP
70 lines
1.6 KiB
PHP
<?php
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// -*- mode: php; -*-
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namespace MRBS;
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global $dbsys;
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// Special case for PostgreSQL as attempting to create a function
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// with the pgsql.sql file doesn't work due to the way the file
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// is split by semi-colons.
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if ($dbsys == "pgsql")
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{
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// Ensure plpgsql language is installed
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$sql = <<<END_OF_SQL
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CREATE OR REPLACE FUNCTION create_language_plpgsql()
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RETURNS BOOLEAN AS \$\$
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CREATE LANGUAGE plpgsql;
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SELECT TRUE;
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\$\$ LANGUAGE SQL;
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END_OF_SQL;
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$upgrade_handle->command($sql);
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$sql = <<<END_OF_SQL
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SELECT CASE WHEN NOT
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(
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SELECT TRUE AS exists
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FROM pg_language
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WHERE lanname = 'plpgsql'
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UNION
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SELECT FALSE AS exists
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ORDER BY exists DESC
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LIMIT 1
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)
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THEN
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create_language_plpgsql()
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ELSE
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FALSE
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END AS plpgsql_created;
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END_OF_SQL;
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$upgrade_handle->command($sql);
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$sql = <<<END_OF_SQL
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DROP FUNCTION create_language_plpgsql();
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END_OF_SQL;
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$upgrade_handle->command($sql);
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// Add function to update timestamp column
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$sql = <<<END_OF_SQL
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CREATE OR REPLACE FUNCTION update_timestamp_column()
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RETURNS TRIGGER AS \$\$
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BEGIN
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NEW.timestamp = NOW();
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RETURN NEW;
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END;
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\$\$ language 'plpgsql';
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END_OF_SQL;
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$upgrade_handle->command($sql);
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// Add triggers for tables with timestamp columns
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foreach (array('entry', 'repeat', 'users') as $table)
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{
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$sql = "CREATE TRIGGER update_" . _tbl($table, false) . "_timestamp " .
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"BEFORE UPDATE ON " . _tbl($table, true) . " FOR EACH ROW " .
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"EXECUTE PROCEDURE update_timestamp_column()";
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$upgrade_handle->command($sql);
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}
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}
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