*
*/
class PostgresField {
- private $name, $tablename, $type, $nullable, $max_length;
+ private $name, $tablename, $type, $nullable, $max_length, $deferred, $deferrable, $conname;
static function fromText($db, $table, $field) {
global $wgDBmwschema;
- $q = <<<END
-SELECT
-CASE WHEN typname = 'int2' THEN 'smallint'
-WHEN typname = 'int4' THEN 'integer'
-WHEN typname = 'int8' THEN 'bigint'
-WHEN typname = 'bpchar' THEN 'char'
-ELSE typname END AS typname,
-attnotnull, attlen
-FROM pg_class, pg_namespace, pg_attribute, pg_type
-WHERE relnamespace=pg_namespace.oid
-AND relkind='r'
-AND attrelid=pg_class.oid
-AND atttypid=pg_type.oid
+ $q = <<<SQL
+SELECT
+ attnotnull, attlen, COALESCE(conname, '') AS conname,
+ COALESCE(condeferred, 'f') AS deferred,
+ COALESCE(condeferrable, 'f') AS deferrable,
+ CASE WHEN typname = 'int2' THEN 'smallint'
+ WHEN typname = 'int4' THEN 'integer'
+ WHEN typname = 'int8' THEN 'bigint'
+ WHEN typname = 'bpchar' THEN 'char'
+ ELSE typname END AS typname
+FROM pg_class c
+JOIN pg_namespace n ON (n.oid = c.relnamespace)
+JOIN pg_attribute a ON (a.attrelid = c.oid)
+JOIN pg_type t ON (t.oid = a.atttypid)
+LEFT JOIN pg_constraint o ON (o.conrelid = c.oid AND a.attnum = ANY(o.conkey) AND o.contype = 'f')
+WHERE relkind = 'r'
AND nspname=%s
AND relname=%s
AND attname=%s;
-END;
+SQL;
$res = $db->query(sprintf($q,
$db->addQuotes($wgDBmwschema),
$db->addQuotes($table),
$n->name = $field;
$n->tablename = $table;
$n->max_length = $row->attlen;
+ $n->deferrable = ($row->deferrable == 't');
+ $n->deferred = ($row->deferred == 't');
+ $n->conname = $row->conname;
return $n;
}
function maxLength() {
return $this->max_length;
}
+
+ function is_deferrable() {
+ return $this->deferrable;
+ }
+
+ function is_deferred() {
+ return $this->deferred;
+ }
+
+ function conname() {
+ return $this->conname;
+ }
+
}
/**
* @ingroup Database
*/
class DatabasePostgres extends DatabaseBase {
- var $mInsertId = NULL;
- var $mLastResult = NULL;
- var $numeric_version = NULL;
- var $mAffectedRows = NULL;
+ var $mInsertId = null;
+ var $mLastResult = null;
+ var $numeric_version = null;
+ var $mAffectedRows = null;
function DatabasePostgres($server = false, $user = false, $password = false, $dbName = false,
$failFunction = false, $flags = 0 )
}
+ function getType() {
+ return 'postgres';
+ }
+
function cascadingDeletes() {
return true;
}
global $wgDBport;
- if (!strlen($user)) { ## e.g. the class is being loaded
- return;
+ if (!strlen($user)) { ## e.g. the class is being loaded
+ return;
}
$this->close();
$this->mServer = $server;
if ($port!=false && $port!="") {
$connectVars['port'] = $port;
}
- $connectString = $this->makeConnectionString( $connectVars );
+ $connectString = $this->makeConnectionString( $connectVars, PGSQL_CONNECT_FORCE_NEW );
$this->installErrorHandler();
$this->mConn = pg_connect( $connectString );
$sql = mb_convert_encoding($sql,'UTF-8');
}
$this->mLastResult = pg_query( $this->mConn, $sql);
- $this->mAffectedRows = NULL; // use pg_affected_rows(mLastResult)
+ $this->mAffectedRows = null; // use pg_affected_rows(mLastResult)
return $this->mLastResult;
}
$sql = "SELECT indexname FROM pg_indexes WHERE tablename='$table'";
$res = $this->query( $sql, $fname );
if ( !$res ) {
- return NULL;
+ return null;
}
while ( $row = $this->fetchObject( $res ) ) {
if ( $row->indexname == $this->indexName( $index ) ) {
")'";
$res = $this->query( $sql, $fname );
if ( !$res )
- return NULL;
+ return null;
while ($row = $this->fetchObject( $res ))
return true;
return false;
}
+ /**
+ * INSERT SELECT wrapper
+ * $varMap must be an associative array of the form array( 'dest1' => 'source1', ...)
+ * Source items may be literals rather then field names, but strings should be quoted with Database::addQuotes()
+ * $conds may be "*" to copy the whole table
+ * srcTable may be an array of tables.
+ * @todo FIXME: implement this a little better (seperate select/insert)?
+ */
+ function insertSelect( $destTable, $srcTable, $varMap, $conds, $fname = 'DatabasePostgres::insertSelect',
+ $insertOptions = array(), $selectOptions = array() )
+ {
+ $destTable = $this->tableName( $destTable );
+
+ // If IGNORE is set, we use savepoints to emulate mysql's behavior
+ $ignore = in_array( 'IGNORE', $insertOptions ) ? 'mw' : '';
+
+ if( is_array( $insertOptions ) ) {
+ $insertOptions = implode( ' ', $insertOptions );
+ }
+ if( !is_array( $selectOptions ) ) {
+ $selectOptions = array( $selectOptions );
+ }
+ list( $startOpts, $useIndex, $tailOpts ) = $this->makeSelectOptions( $selectOptions );
+ if( is_array( $srcTable ) ) {
+ $srcTable = implode( ',', array_map( array( &$this, 'tableName' ), $srcTable ) );
+ } else {
+ $srcTable = $this->tableName( $srcTable );
+ }
+
+ // If we are not in a transaction, we need to be for savepoint trickery
+ $didbegin = 0;
+ if ( $ignore ) {
+ if( !$this->mTrxLevel ) {
+ $this->begin();
+ $didbegin = 1;
+ }
+ $olde = error_reporting( 0 );
+ $numrowsinserted = 0;
+ pg_query( $this->mConn, "SAVEPOINT $ignore");
+ }
+
+ $sql = "INSERT INTO $destTable (" . implode( ',', array_keys( $varMap ) ) . ')' .
+ " SELECT $startOpts " . implode( ',', $varMap ) .
+ " FROM $srcTable $useIndex";
+
+ if ( $conds != '*') {
+ $sql .= ' WHERE ' . $this->makeList( $conds, LIST_AND );
+ }
+
+ $sql .= " $tailOpts";
+
+ $res = (bool)$this->query( $sql, $fname, $ignore );
+ if( $ignore ) {
+ $bar = pg_last_error();
+ if( $bar != false ) {
+ pg_query( $this->mConn, "ROLLBACK TO $ignore" );
+ } else {
+ pg_query( $this->mConn, "RELEASE $ignore" );
+ $numrowsinserted++;
+ }
+ $olde = error_reporting( $olde );
+ if( $didbegin ) {
+ $this->commit();
+ }
+
+ // Set the affected row count for the whole operation
+ $this->mAffectedRows = $numrowsinserted;
+
+ // IGNORE always returns true
+ return true;
+ }
+
+ return $res;
+ }
+
function tableName( $name ) {
# Replace reserved words with better ones
switch( $name ) {
}
/**
- * Return the current value of a sequence. Assumes it has ben nextval'ed in this session.
+ * Return the current value of a sequence. Assumes it has been nextval'ed in this session.
*/
function currentSequenceValue( $seqName ) {
$safeseq = preg_replace( "/'/", "''", $seqName );
return $this->lastErrno() == '40P01';
}
+ function duplicateTableStructure( $oldName, $newName, $temporary = false, $fname = 'DatabasePostgres::duplicateTableStructure' ) {
+ return $this->query( 'CREATE ' . ( $temporary ? 'TEMPORARY ' : '' ) . " TABLE $newName (LIKE $oldName INCLUDING DEFAULTS)", $fname );
+ }
+
function timestamp( $ts=0 ) {
return wfTimestamp(TS_POSTGRES,$ts);
}
function triggerExists( $table, $trigger ) {
global $wgDBmwschema;
- $q = <<<END
+ $q = <<<SQL
SELECT 1 FROM pg_class, pg_namespace, pg_trigger
WHERE relnamespace=pg_namespace.oid AND relkind='r'
AND tgrelid=pg_class.oid
AND nspname=%s AND relname=%s AND tgname=%s
-END;
+SQL;
$res = $this->query(sprintf($q,
$this->addQuotes($wgDBmwschema),
$this->addQuotes($table),
$this->addQuotes($trigger)));
if (!$res)
- return NULL;
+ return null;
$rows = $res->numRows();
$this->freeResult( $res );
return $rows;
$this->addQuotes($constraint));
$res = $this->query($SQL);
if (!$res)
- return NULL;
+ return null;
$rows = $res->numRows();
$this->freeResult($res);
return $rows;
}
$this->doQuery("DROP TABLE $safeschema.$ctest");
- $res = dbsource( "../maintenance/postgres/tables.sql", $this);
+ $res = $this->sourceFile( "../maintenance/postgres/tables.sql" );
## Update version information
$mwv = $this->addQuotes($wgVersion);
return implode( ' || ', $stringList );
}
- /* These are not used yet, but we know we don't want the default version */
-
- public function lock( $lockName, $method, $timeout = 5 ) {
- return true;
- }
- public function unlock( $lockName, $method ) {
- return true;
- }
-
public function getSearchEngine() {
return "SearchPostgres";
}
-
- /** No-op */
- public function setBigSelects( $value = true ) {}
-
- /** Todo: maybe implement this? */
- public function lockTables( $read, $write, $method ) {}
-
- public function unlockTables( $method ) {}
-
} // end DatabasePostgres class
dépôts / lhc / web / wiklou.git / blobdiff