/**
* @ingroup Database
*/
-class DatabasePostgres extends Database {
+class DatabasePostgres extends DatabaseBase {
var $mInsertId = NULL;
var $mLastResult = NULL;
var $numeric_version = NULL;
print "<li>Database \"" . htmlspecialchars( $wgDBname ) . "\" already exists, skipping database creation.</li>";
}
else {
- if ($perms < 2) {
+ if ($perms < 1) {
print "<li>ERROR: the user \"" . htmlspecialchars( $wgDBsuperuser ) . "\" cannot create databases. ";
print 'Please use a different Postgres user.</li>';
dieout('</ul>');
* Takes same arguments as Database::select()
*/
- function estimateRowCount( $table, $vars='*', $conds='', $fname = 'Database::estimateRowCount', $options = array() ) {
+ function estimateRowCount( $table, $vars='*', $conds='', $fname = 'DatabasePostgres::estimateRowCount', $options = array() ) {
$options['EXPLAIN'] = true;
$res = $this->select( $table, $vars, $conds, $fname, $options );
$rows = -1;
* Returns information about an index
* If errors are explicitly ignored, returns NULL on failure
*/
- function indexInfo( $table, $index, $fname = 'Database::indexExists' ) {
+ function indexInfo( $table, $index, $fname = 'DatabasePostgres::indexInfo' ) {
$sql = "SELECT indexname FROM pg_indexes WHERE tablename='$table'";
$res = $this->query( $sql, $fname );
if ( !$res ) {
return false;
}
- function indexUnique ($table, $index, $fname = 'Database::indexUnique' ) {
+ function indexUnique ($table, $index, $fname = 'DatabasePostgres::indexUnique' ) {
$sql = "SELECT indexname FROM pg_indexes WHERE tablename='{$table}'".
" AND indexdef LIKE 'CREATE UNIQUE%(" .
$this->strencode( $this->indexName( $index ) ) .
}
+ /**
+ * 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 $currval;
}
- /**
- * Postgres does not have a "USE INDEX" clause, so return an empty string
- */
- function useIndexClause( $index ) {
- return '';
- }
-
# REPLACE query wrapper
# Postgres simulates this with a DELETE followed by INSERT
# $row is the row to insert, an associative array
# It may be more efficient to leave off unique indexes which are unlikely to collide.
# However if you do this, you run the risk of encountering errors which wouldn't have
# occurred in MySQL
- function replace( $table, $uniqueIndexes, $rows, $fname = 'Database::replace' ) {
+ function replace( $table, $uniqueIndexes, $rows, $fname = 'DatabasePostgres::replace' ) {
$table = $this->tableName( $table );
if (count($rows)==0) {
}
# DELETE where the condition is a join
- function deleteJoin( $delTable, $joinTable, $delVar, $joinVar, $conds, $fname = "Database::deleteJoin" ) {
+ function deleteJoin( $delTable, $joinTable, $delVar, $joinVar, $conds, $fname = 'DatabasePostgres::deleteJoin' ) {
if ( !$conds ) {
throw new DBUnexpectedError($this, 'Database::deleteJoin() called with empty $conds' );
}
return $size;
}
- function lowPriorityOption() {
- return '';
- }
-
function limitResult($sql, $limit, $offset=false) {
return "$sql LIMIT $limit ".(is_numeric($offset)?" OFFSET {$offset} ":"");
}
- /**
- * Returns an SQL expression for a simple conditional.
- * Uses CASE on Postgres
- *
- * @param $cond String: SQL expression which will result in a boolean value
- * @param $trueVal String: SQL expression to return if true
- * @param $falseVal String: SQL expression to return if false
- * @return String: SQL fragment
- */
- function conditional( $cond, $trueVal, $falseVal ) {
- return " (CASE WHEN $cond THEN $trueVal ELSE $falseVal END) ";
- }
-
function wasDeadlock() {
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 getServerVersion() {
$versionInfo = pg_version( $this->mConn );
- if ( isset( $versionInfo['server'] ) ) {
+ if ( version_compare( $versionInfo['client'], '7.4.0', 'lt' ) ) {
+ // Old client, abort install
+ $this->numeric_version = '7.3 or earlier';
+ } elseif ( isset( $versionInfo['server'] ) ) {
+ // Normal client
$this->numeric_version = $versionInfo['server'];
} else {
- // There's no way to identify the precise version before 7.4, but
- // it doesn't matter anyway since we're just going to give an error.
- $this->numeric_version = '7.3 or earlier';
+ // Bug 16937: broken pgsql extension from PHP<5.3
+ $this->numeric_version = pg_parameter_status( $this->mConn, 'server_version' );
}
return $this->numeric_version;
}
*/
function relationExists( $table, $types, $schema = false ) {
global $wgDBmwschema;
- if (!is_array($types))
- $types = array($types);
- if (! $schema )
+ if ( !is_array( $types ) )
+ $types = array( $types );
+ if ( !$schema )
$schema = $wgDBmwschema;
- $etable = $this->addQuotes($table);
- $eschema = $this->addQuotes($schema);
+ $etable = $this->addQuotes( $table );
+ $eschema = $this->addQuotes( $schema );
$SQL = "SELECT 1 FROM pg_catalog.pg_class c, pg_catalog.pg_namespace n "
. "WHERE c.relnamespace = n.oid AND c.relname = $etable AND n.nspname = $eschema "
. "AND c.relkind IN ('" . implode("','", $types) . "')";
* For backward compatibility, this function checks both tables and
* views.
*/
- function tableExists ($table, $schema = false) {
- return $this->relationExists($table, array('r', 'v'), $schema);
+ function tableExists( $table, $schema = false ) {
+ return $this->relationExists( $table, array( 'r', 'v' ), $schema );
}
- function sequenceExists ($sequence, $schema = false) {
- return $this->relationExists($sequence, 'S', $schema);
+ function sequenceExists( $sequence, $schema = false ) {
+ return $this->relationExists( $sequence, 'S', $schema );
}
- function triggerExists($table, $trigger) {
+ function triggerExists( $table, $trigger ) {
global $wgDBmwschema;
$q = <<<END
if (!$res)
return NULL;
$rows = $res->numRows();
- $this->freeResult($res);
+ $this->freeResult( $res );
return $rows;
}
- function ruleExists($table, $rule) {
+ function ruleExists( $table, $rule ) {
global $wgDBmwschema;
$exists = $this->selectField("pg_rules", "rulename",
array( "rulename" => $rule,
"tablename" => $table,
- "schemaname" => $wgDBmwschema));
+ "schemaname" => $wgDBmwschema ) );
return $exists === $rule;
}
- function constraintExists($table, $constraint) {
+ function constraintExists( $table, $constraint ) {
global $wgDBmwschema;
$SQL = sprintf("SELECT 1 FROM information_schema.table_constraints ".
"WHERE constraint_schema = %s AND table_name = %s AND constraint_name = %s",
}
/* Not even sure why this is used in the main codebase... */
- function limitResultForUpdate($sql, $num) {
+ function limitResultForUpdate( $sql, $num ) {
return $sql;
}
}
$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 '"' . preg_replace( '/"/', '""', $s) . '"';
}
- /* For now, does nothing */
- function selectDB( $db ) {
- return true;
- }
-
/**
* Postgres specific version of replaceVars.
* Calls the parent version in Database.php
return array( $startOpts, $useIndex, $preLimitTail, $postLimitTail );
}
- public function setTimeout( $timeout ) {
- // @todo fixme no-op
- }
-
- function ping() {
- wfDebug( "Function ping() not written for DatabasePostgres.php yet");
- return true;
- }
-
/**
* How lagged is this slave?
*
return implode( ' || ', $stringList );
}
- /* These are not used yet, but we know we don't want the default version */
-
- public function lock( $lockName, $method ) {
- return true;
- }
- public function unlock( $lockName, $method ) {
- return true;
- }
-
public function getSearchEngine() {
return "SearchPostgres";
}
-
} // end DatabasePostgres class
dépôts / lhc / web / wiklou.git / blobdiff