return $currval;
}
- /**
- * REPLACE query wrapper
- * Postgres simulates this with a DELETE followed by INSERT
- * $row is the row to insert, an associative array
- * $uniqueIndexes is an array of indexes. Each element may be either a
- * field name or an array of field names
- *
- * 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 = 'DatabasePostgres::replace' ) {
- $table = $this->tableName( $table );
-
- if ( count( $rows ) == 0 ) {
- return;
- }
-
- # Single row case
- if ( !is_array( reset( $rows ) ) ) {
- $rows = array( $rows );
- }
-
- foreach( $rows as $row ) {
- # Delete rows which collide
- if ( $uniqueIndexes ) {
- $sql = "DELETE FROM $table WHERE ";
- $first = true;
- foreach ( $uniqueIndexes as $index ) {
- if ( $first ) {
- $first = false;
- $sql .= '(';
- } else {
- $sql .= ') OR (';
- }
- if ( is_array( $index ) ) {
- $first2 = true;
- foreach ( $index as $col ) {
- if ( $first2 ) {
- $first2 = false;
- } else {
- $sql .= ' AND ';
- }
- $sql .= $col.'=' . $this->addQuotes( $row[$col] );
- }
- } else {
- $sql .= $index.'=' . $this->addQuotes( $row[$index] );
- }
- }
- $sql .= ')';
- $this->query( $sql, $fname );
- }
-
- # Now insert the row
- $sql = "INSERT INTO $table (" . $this->makeList( array_keys( $row ), LIST_NAMES ) .') VALUES (' .
- $this->makeList( $row, LIST_COMMA ) . ')';
- $this->query( $sql, $fname );
- }
- }
-
# Returns the size of a text field, or -1 for "unlimited"
function textFieldSize( $table, $field ) {
$table = $this->tableName( $table );