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Fixed restore problem with NULL columns, and added some documentation.

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git-svn-id: file:///svn/phpbb/trunk@780 89ea8834-ac86-4346-8a33-228a782c2dd0
This commit is contained in:
the_systech 2001-08-01 15:27:13 +00:00
parent e98e3e1403
commit 21a6090308
1 changed files with 71 additions and 10 deletions
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77
phpBB/admin/admin_db_utilities.php
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@ -28,6 +28,10 @@
* adapted from the unoficial phpMyAdmin 2.2.0.
***************************************************************************/
//
// Do the setmodules stuff for the admin control panel.
//
if($setmodules == 1)
{
$filename = basename(__FILE__);
@ -143,6 +147,9 @@ function get_table_def_postgres($table, $crlf)
global $drop, $db;
$schema_create = "";
//
// Get a listing of the fields, with their associated types, etc.
//
$field_query = "SELECT a.attnum, a.attname AS field, t.typename as type, a.attlen AS length, a.atttypmod as lengthvar, a.attnotnull as notnull
FROM pg_class c, pg_attribute a, pg_type t
@ -164,10 +171,17 @@ function get_table_def_postgres($table, $crlf)
$schema_create .= "DROP TABLE $table;$crlf";
} // end if
//
// Ok now we actually start building the SQL statements to restore the tables
//
$schema_create .= "CREATE TABLE $table($crlf";
while ($row = $db->sql_fetchrow($result))
{
//
// Get the data from the table
//
$sql_get_default = "SELECT d.adsrc AS rowdefault
FROM pg_attrdef d, pg_class c
WHERE (c.relname = '$table')
@ -220,6 +234,9 @@ function get_table_def_postgres($table, $crlf)
$schema_create .= ", $crlf";
}
//
// Get the listing of primary keys.
//
$sql_pri_keys = "SELECT ic.relname AS index_name, bc.relname AS tab_name, ta.attname AS column_name, i.indisunique AS unique_key, i.indisprimary AS primary_key
FROM pg_class bc, pg_class ic, pg_index i, pg_attribute ta, pg_attribute ia
@ -301,6 +318,9 @@ function get_table_def_postgres($table, $crlf)
message_die(GENERAL_ERROR, "Failed in get_table_def (show fields)", "", __LINE__, __FILE__, $sql_checks);
}
//
// Add the constraints to the sql file.
//
while ($row = $db->sql_fetchrow($result))
{
$schema_create .= ' CONSTRAINT ' . $row['index_name'] . ' CHECK ' . $row['rcsrc'] . ",$crlf";
@ -316,6 +336,9 @@ function get_table_def_postgres($table, $crlf)
$schema_create .= $index_create;
}
//
// Ok now we've built all the sql return it to the calling function.
//
return (stripslashes($schema_create));
}
@ -454,6 +477,10 @@ function get_table_content_postgres($table, $handler)
{
global $db;
//
// Grab all of the data from current table.
//
$result = $db->sql_query("SELECT * FROM $table");
if (!$result)
@ -477,7 +504,9 @@ function get_table_content_postgres($table, $handler)
unset($schema_vals);
unset($schema_fields);
unset($schema_insert);
//
// Build the SQL statement to recreate the data.
//
for($i = 0; $i < $i_num_fields; $i++)
{
$strVal = $row[$aryName[$i]];
@ -519,6 +548,10 @@ function get_table_content_postgres($table, $handler)
$schema_fields = ereg_replace(",$", "", $schema_fields);
$schema_fields = ereg_replace("^ ", "", $schema_fields);
//
// Take the ordered fields and their associated data and build it
// into a valid sql statement to recreate that field in the data.
//
$schema_insert = "INSERT INTO $table ($schema_fields) VALUES($schema_vals);";
$handler(trim($schema_insert));
@ -528,11 +561,16 @@ function get_table_content_postgres($table, $handler)
}// end function get_table_content_postgres...
//
// This function is for getting the data from a mysql table.
//
function get_table_content_mysql($table, $handler)
{
global $db;
//
// Grab the data from the table.
//
$result = $db->sql_query("SELECT * FROM $table");
if (!$result)
@ -552,26 +590,44 @@ function get_table_content_mysql($table, $handler)
$handler($schema_insert);
//
// Loop through the resulting rows and build the sql statement.
//
while ($row = $db->sql_fetchrow($result))
{
$table_list = '(';
$num_fields = $db->sql_numfields($result);
//
// Grab the list of field names.
//
for ($j = 0; $j < $num_fields; $j++)
{
$table_list .= $db->sql_fieldname($j, $result) . ', ';
}
//
// Get rid of the last comma
//
$table_list = ereg_replace(', $', '', $table_list);
$table_list .= ')';
//
// Start building the SQL statement.
//
$schema_insert = "INSERT INTO $table $table_list VALUES(";
//
// Loop through the rows and fill in data for each column
//
for ($j = 0; $j < $num_fields; $j++)
{
if(!isset($row[$j]))
{
$schema_insert .= ' NULL, ';
//
// If there is no data for the column set it to null.
// There was a problem here with an extra space causing the
// sql file not to reimport if the last column was null in
// any table. Should be fixed now :) JLH
//
$schema_insert .= ' NULL,';
}
elseif ($row[$j] != '')
{
@ -582,9 +638,14 @@ function get_table_content_mysql($table, $handler)
$schema_insert .= '\'\',';
}
}
//
// Get rid of the the last comma.
//
$schema_insert = ereg_replace(',$', '', $schema_insert);
$schema_insert .= ');';
//
// Go ahead and send the insert statement to the handler function.
//
$handler(trim($schema_insert));
}