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- add DB2 support
/me takes a nap git-svn-id: file:///svn/phpbb/trunk@8308 89ea8834-ac86-4346-8a33-228a782c2dd0
This commit is contained in:
David M
@@ -113,6 +113,10 @@ class acp_database
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case 'firebird':
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$extractor = new firebird_extractor($download, $store, $format, $filename, $time);
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break;
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case 'db2':
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$extractor = new db2_extractor($download, $store, $format, $filename, $time);
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break;
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}
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$extractor->write_start($table_prefix);
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@@ -131,6 +135,7 @@ class acp_database
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{
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case 'sqlite':
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case 'firebird':
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case 'db2':
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$extractor->flush('DELETE FROM ' . $table_name . ";\n");
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break;
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@@ -1549,6 +1554,175 @@ class mssql_extractor extends base_extractor
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}
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/**
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* @package acp
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*/
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class db2_extractor extends base_extractor
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{
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function write_start($prefix)
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{
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$sql_data = "--\n";
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$sql_data .= "-- phpBB Backup Script\n";
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$sql_data .= "-- Dump of tables for $prefix\n";
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$sql_data .= "-- DATE : " . gmdate("d-m-Y H:i:s", $this->time) . " GMT\n";
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$sql_data .= "--\n";
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$this->flush($sql_data);
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}
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function write_table($table_name)
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{
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global $db;
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$sql_data = '-- Table: ' . $table_name . "\n";
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$sql_data .= "\nCREATE TABLE $table_name (\n";
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$rows = array();
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// switch to db2_columns()?
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$sql = "SELECT colname, typename, length, default, identity, nulls
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FROM syscat.columns
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WHERE tabname = '$table_name'";
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$result = $db->sql_query($sql);
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while ($row = $db->sql_fetchrow($result))
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{
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$line = "\t{$row['colname']} {$row['typename']}";
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if ($row['identity'] == 'Y')
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{
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$line .= ' GENERATED BY DEFAULT AS IDENTITY (START WITH 1, INCREMENT BY 1)';
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}
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if ($row['typename'] == 'VARCHAR' || $row['typename'] == 'CHARACTER' || $row['typename'] == 'CLOB')
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{
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$line .= ' (' . $row['length'] . ')';
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}
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if ($row['nulls'] == 'N')
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{
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$line .= ' NOT NULL';
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}
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else
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{
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$line .= ' NULL';
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}
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if ($row['default'] !== null)
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{
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$line .= ' DEFAULT ' . $row['default'];
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}
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$rows[] = $line;
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}
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$db->sql_freeresult($result);
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// switch to db2_columns()?
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$sql = "SELECT colname
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FROM SYSCAT.KEYCOLUSE
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WHERE tabname = '$table_name'";
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$result = $db->sql_query($sql);
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$prim_cols = array();
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while ($row = $db->sql_fetchrow($result))
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{
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$prim_cols[] = $row['colname'];
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}
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$db->sql_freeresult($result);
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if (sizeof($prim_cols))
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{
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$rows[] = "\tPRIMARY KEY (" . implode($prim_cols) . ')';
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}
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$sql_data .= implode(",\n", $rows);
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$sql_data .= "\n);\n\n";
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$rows = array();
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$sql = "SELECT colnames, indname
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FROM SYSCAT.INDEXES
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WHERE TABNAME = '$table_name'
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AND UNIQUERULE <> 'P'";
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$result = $db->sql_query($sql);
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$index = array();
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while ($row = $db->sql_fetchrow($result))
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{
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$inds = explode('+', $row['colnames']);
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unset($inds[0]);
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$sql_data .= 'CREATE INDEX ' . $row['indname'] . ' ON ' . $table_name . ' (' . implode(', ', $inds) . ") PCTFREE 10 MINPCTUSED 10 ALLOW REVERSE SCANS PAGE SPLIT SYMMETRIC COLLECT SAMPLED DETAILED STATISTICS;\n";
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}
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$db->sql_freeresult($result);
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$this->flush($sql_data);
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}
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function write_data($table_name)
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{
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global $db;
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$ary_type = $ary_name = array();
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$result = db2_columns($db->db_connect_id, '', '%', $table_name);
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$i = 0;
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while ($row = $db->sql_fetchrow($result))
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{
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$ary_type[$i] = $row['type_name'];
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$ary_name[$i++] = strtolower($row['column_name']);
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}
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$db->sql_freeresult($result);
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// Grab all of the data from current table.
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$sql = "SELECT *
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FROM $table_name";
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$result = $db->sql_query($sql);
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$sql_data = '';
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$i_num_fields = $i;
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while ($row = $db->sql_fetchrow($result))
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{
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$schema_vals = $schema_fields = array();
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// Build the SQL statement to recreate the data.
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for ($i = 0; $i < $i_num_fields; $i++)
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{
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$str_val = $row[$ary_name[$i]];
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if (preg_match('#char|clob#i', $ary_type[$i]))
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{
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$str_quote = "'";
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$str_empty = '';
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$str_val = sanitize_data_generic(str_replace("'", "''", $str_val));
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}
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else if (preg_match('#date|timestamp#i', $ary_type[$i]))
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{
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if (empty($str_val))
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{
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$str_quote = '';
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}
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else
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{
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$str_quote = "'";
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}
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}
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else
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{
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$str_quote = '';
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$str_empty = 'NULL';
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}
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if (empty($str_val) && $str_val !== '0')
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{
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$str_val = $str_empty;
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}
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$schema_vals[$i] = $str_quote . $str_val . $str_quote;
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$schema_fields[$i] = '"' . $ary_name[$i] . "'";
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}
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// Take the ordered fields and their associated data and build it
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// into a valid sql statement to recreate that field in the data.
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$sql_data = "INSERT INTO $table_name (" . implode(', ', $schema_fields) . ') VALUES (' . implode(', ', $schema_vals) . ");\n";
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$this->flush($sql_data);
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}
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$db->sql_freeresult($result);
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}
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}
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/**
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* @package acp
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*/
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