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MINOR: transaction functions renamed for consistency, field list lookups now cached for speed improvements

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This commit is contained in:
Geoff Munn 2011-01-11 21:17:17 +00:00
parent 99f2cb179e
commit 2bd6e9fb8e
1 changed files with 516 additions and 500 deletions
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30
code/PostgreSQLDatabase.php
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@ -88,6 +88,15 @@ class PostgreSQLDatabase extends SS_Database {
*/ */
private static $cached_ordered_specifically=array(); private static $cached_ordered_specifically=array();
/**
*
* This holds a copy of all the queries that run through the function fieldList()
* This is one of the most-often called functions, and repeats itself a great deal in the unit tests.
*
* @var array
*/
private static $cached_fieldlists=array();
/** /**
* Override the language that tsearch uses. By default it is 'english, but * Override the language that tsearch uses. By default it is 'english, but
* could be any of the supported languages that can be found in the * could be any of the supported languages that can be found in the
@ -278,7 +287,7 @@ class PostgreSQLDatabase extends SS_Database {
$this->selectDatabase($this->database_original); $this->selectDatabase($this->database_original);
$this->connectDatabase(); $this->connectDatabase();
$this->query("DROP DATABASE $db_to_drop"); $this->query("DROP DATABASE \"$db_to_drop\"");
} }
/** /**
@ -647,6 +656,7 @@ class PostgreSQLDatabase extends SS_Database {
// First, we split the column specifications into parts // First, we split the column specifications into parts
// TODO: this returns an empty array for the following string: int(11) not null auto_increment // TODO: this returns an empty array for the following string: int(11) not null auto_increment
// on second thoughts, why is an auto_increment field being passed through? // on second thoughts, why is an auto_increment field being passed through?
$pattern = '/^([\w()]+)\s?((?:not\s)?null)?\s?(default\s[\w\']+)?\s?(check\s[\w()\'",\s]+)?$/i'; $pattern = '/^([\w()]+)\s?((?:not\s)?null)?\s?(default\s[\w\']+)?\s?(check\s[\w()\'",\s]+)?$/i';
preg_match($pattern, $colSpec, $matches); preg_match($pattern, $colSpec, $matches);
@ -757,6 +767,8 @@ class PostgreSQLDatabase extends SS_Database {
public function fieldList($table) { public function fieldList($table) {
//Query from http://www.alberton.info/postgresql_meta_info.html //Query from http://www.alberton.info/postgresql_meta_info.html
//This gets us more information than we need, but I've included it all for the moment.... //This gets us more information than we need, but I've included it all for the moment....
if(!isset(self::$cached_fieldlists[$table])){
$fields = $this->query("SELECT ordinal_position, column_name, data_type, column_default, is_nullable, character_maximum_length, numeric_precision, numeric_scale FROM information_schema.columns WHERE table_name = '$table' ORDER BY ordinal_position;"); $fields = $this->query("SELECT ordinal_position, column_name, data_type, column_default, is_nullable, character_maximum_length, numeric_precision, numeric_scale FROM information_schema.columns WHERE table_name = '$table' ORDER BY ordinal_position;");
$output = array(); $output = array();
@ -838,7 +850,9 @@ class PostgreSQLDatabase extends SS_Database {
} }
return $output; self::$cached_fieldlists[$table]=$output;
}
return self::$cached_fieldlists[$table];
} }
/** /**
@ -1059,6 +1073,7 @@ class PostgreSQLDatabase extends SS_Database {
*/ */
public function tableList() { public function tableList() {
$schema_SQL = pg_escape_string($this->dbConn, $this->schema); $schema_SQL = pg_escape_string($this->dbConn, $this->schema);
$tables=array();
foreach($this->query("SELECT tablename FROM pg_catalog.pg_tables WHERE schemaname = '{$schema_SQL}' AND tablename NOT ILIKE 'pg_%' AND tablename NOT ILIKE 'sql_%'") as $record) { foreach($this->query("SELECT tablename FROM pg_catalog.pg_tables WHERE schemaname = '{$schema_SQL}' AND tablename NOT ILIKE 'pg_%' AND tablename NOT ILIKE 'sql_%'") as $record) {
//$table = strtolower(reset($record)); //$table = strtolower(reset($record));
$table = reset($record); $table = reset($record);
@ -1066,7 +1081,7 @@ class PostgreSQLDatabase extends SS_Database {
} }
//Return an empty array if there's nothing in this database //Return an empty array if there's nothing in this database
return isset($tables) ? $tables : Array(); return $tables;
} }
function TableExists($tableName){ function TableExists($tableName){
@ -1375,8 +1390,9 @@ class PostgreSQLDatabase extends SS_Database {
//TODO: the DbValue result does not include the numeric_scale option (ie, the ,0 value in 4,0) //TODO: the DbValue result does not include the numeric_scale option (ie, the ,0 value in 4,0)
if($asDbValue) if($asDbValue)
return Array('data_type'=>'decimal', 'precision'=>'4', 'default'=> (int)$values['default']); return Array('data_type'=>'decimal', 'precision'=>'4');
else return "decimal(4,0){$values['arrayValue']}"; else
return "decimal(4,0){$values['arrayValue']}";
} }
function escape_character($escape=false){ function escape_character($escape=false){
@ -1712,7 +1728,7 @@ class PostgreSQLDatabase extends SS_Database {
* Start a prepared transaction * Start a prepared transaction
* See http://developer.postgresql.org/pgdocs/postgres/sql-set-transaction.html for details on transaction isolation options * See http://developer.postgresql.org/pgdocs/postgres/sql-set-transaction.html for details on transaction isolation options
*/ */
public function startTransaction($transaction_mode=false, $session_characteristics=false){ public function transactionStart($transaction_mode=false, $session_characteristics=false){
DB::query('BEGIN;'); DB::query('BEGIN;');
if($transaction_mode) if($transaction_mode)
@ -1745,7 +1761,7 @@ class PostgreSQLDatabase extends SS_Database {
/* /*
* Commit everything inside this transaction so far * Commit everything inside this transaction so far
*/ */
public function endTransaction(){ public function transactionEnd(){
DB::query('COMMIT;'); DB::query('COMMIT;');
} }