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- <?php
-
- /**
- V4.21 20 Mar 2004 (c) 2000-2004 John Lim (jlim@natsoft.com.my). All rights reserved.
- Released under both BSD license and Lesser GPL library license.
- Whenever there is any discrepancy between the two licenses,
- the BSD license will take precedence.
-
- Set tabs to 4 for best viewing.
-
- */
-
- class ADODB2_postgres extends ADODB_DataDict {
-
- var $databaseType = 'postgres';
- var $seqField = false;
- var $seqPrefix = 'SEQ_';
- var $addCol = ' ADD COLUMN';
- var $quote = '"';
-
- function MetaType($t,$len=-1,$fieldobj=false)
- {
- if (is_object($t)) {
- $fieldobj = $t;
- $t = $fieldobj->type;
- $len = $fieldobj->max_length;
- }
- switch (strtoupper($t)) {
- case 'INTERVAL':
- case 'CHAR':
- case 'CHARACTER':
- case 'VARCHAR':
- case 'NAME':
- case 'BPCHAR':
- if ($len <= $this->blobSize) return 'C';
-
- case 'TEXT':
- return 'X';
-
- case 'IMAGE': // user defined type
- case 'BLOB': // user defined type
- case 'BIT': // This is a bit string, not a single bit, so don't return 'L'
- case 'VARBIT':
- case 'BYTEA':
- return 'B';
-
- case 'BOOL':
- case 'BOOLEAN':
- return 'L';
-
- case 'DATE':
- return 'D';
-
- case 'TIME':
- case 'DATETIME':
- case 'TIMESTAMP':
- case 'TIMESTAMPTZ':
- return 'T';
-
- case 'INTEGER': return (empty($fieldobj->primary_key) && empty($fieldobj->unique))? 'I' : 'R';
- case 'SMALLINT':
- case 'INT2': return (empty($fieldobj->primary_key) && empty($fieldobj->unique))? 'I2' : 'R';
- case 'INT4': return (empty($fieldobj->primary_key) && empty($fieldobj->unique))? 'I4' : 'R';
- case 'BIGINT':
- case 'INT8': return (empty($fieldobj->primary_key) && empty($fieldobj->unique))? 'I8' : 'R';
-
- case 'OID':
- case 'SERIAL':
- return 'R';
-
- case 'FLOAT4':
- case 'FLOAT8':
- case 'DOUBLE PRECISION':
- case 'REAL':
- return 'F';
-
- default:
- return 'N';
- }
- }
-
- function ActualType($meta)
- {
- switch($meta) {
- case 'C': return 'VARCHAR';
- case 'XL':
- case 'X': return 'TEXT';
-
- case 'C2': return 'VARCHAR';
- case 'X2': return 'TEXT';
-
- case 'B': return 'BYTEA';
-
- case 'D': return 'DATE';
- case 'T': return 'TIMESTAMP';
-
- case 'L': return 'SMALLINT';
- case 'I': return 'INTEGER';
- case 'I1': return 'SMALLINT';
- case 'I2': return 'INT2';
- case 'I4': return 'INT4';
- case 'I8': return 'INT8';
-
- case 'F': return 'FLOAT8';
- case 'N': return 'NUMERIC';
- default:
- return $meta;
- }
- }
-
- /* The following does not work in Pg 6.0 - does anyone want to contribute code?
-
- //"ALTER TABLE table ALTER COLUMN column SET DEFAULT mydef" and
- //"ALTER TABLE table ALTER COLUMN column DROP DEFAULT mydef"
- //"ALTER TABLE table ALTER COLUMN column SET NOT NULL" and
- //"ALTER TABLE table ALTER COLUMN column DROP NOT NULL"*/
- function AlterColumnSQL($tabname, $flds)
- {
- if ($this->debug) ADOConnection::outp("AlterColumnSQL not supported for PostgreSQL");
- return array();
- }
-
-
- function DropColumnSQL($tabname, $flds)
- {
- if ($this->debug) ADOConnection::outp("DropColumnSQL only works with PostgreSQL 7.3+");
- return ADODB_DataDict::DropColumnSQL($tabname, $flds)."/* only works for PostgreSQL 7.3+ */";
- }
-
- // return string must begin with space
- function _CreateSuffix($fname, &$ftype, $fnotnull,$fdefault,$fautoinc,$fconstraint)
- {
- if ($fautoinc) {
- $ftype = 'SERIAL';
- return '';
- }
- $suffix = '';
- if (strlen($fdefault)) $suffix .= " DEFAULT $fdefault";
- if ($fnotnull) $suffix .= ' NOT NULL';
- if ($fconstraint) $suffix .= ' '.$fconstraint;
- return $suffix;
- }
-
- function _DropAutoIncrement($t)
- {
- return "drop sequence ".$t."_m_id_seq";
- }
-
- /*
- CREATE [ [ LOCAL ] { TEMPORARY | TEMP } ] TABLE table_name (
- { column_name data_type [ DEFAULT default_expr ] [ column_constraint [, ... ] ]
- | table_constraint } [, ... ]
- )
- [ INHERITS ( parent_table [, ... ] ) ]
- [ WITH OIDS | WITHOUT OIDS ]
- where column_constraint is:
- [ CONSTRAINT constraint_name ]
- { NOT NULL | NULL | UNIQUE | PRIMARY KEY |
- CHECK (expression) |
- REFERENCES reftable [ ( refcolumn ) ] [ MATCH FULL | MATCH PARTIAL ]
- [ ON DELETE action ] [ ON UPDATE action ] }
- [ DEFERRABLE | NOT DEFERRABLE ] [ INITIALLY DEFERRED | INITIALLY IMMEDIATE ]
- and table_constraint is:
- [ CONSTRAINT constraint_name ]
- { UNIQUE ( column_name [, ... ] ) |
- PRIMARY KEY ( column_name [, ... ] ) |
- CHECK ( expression ) |
- FOREIGN KEY ( column_name [, ... ] ) REFERENCES reftable [ ( refcolumn [, ... ] ) ]
- [ MATCH FULL | MATCH PARTIAL ] [ ON DELETE action ] [ ON UPDATE action ] }
- [ DEFERRABLE | NOT DEFERRABLE ] [ INITIALLY DEFERRED | INITIALLY IMMEDIATE ]
- */
-
-
- /*
- CREATE [ UNIQUE ] INDEX index_name ON table
- [ USING acc_method ] ( column [ ops_name ] [, ...] )
- [ WHERE predicate ]
- CREATE [ UNIQUE ] INDEX index_name ON table
- [ USING acc_method ] ( func_name( column [, ... ]) [ ops_name ] )
- [ WHERE predicate ]
- */
- function _IndexSQL($idxname, $tabname, $flds, $idxoptions)
- {
- $sql = array();
-
- if ( isset($idxoptions['REPLACE']) || isset($idxoptions['DROP']) ) {
- $sql[] = sprintf ($this->dropIndex, $idxname, $tabname);
- if ( isset($idxoptions['DROP']) )
- return $sql;
- }
-
- if ( empty ($flds) ) {
- return $sql;
- }
-
- $unique = isset($idxoptions['UNIQUE']) ? ' UNIQUE' : '';
-
- $s = 'CREATE' . $unique . ' INDEX ' . $idxname . ' ON ' . $tabname . ' ';
-
- if (isset($idxoptions['HASH']))
- $s .= 'USING HASH ';
-
- if ( isset($idxoptions[$this->upperName]) )
- $s .= $idxoptions[$this->upperName];
-
- if ( is_array($flds) )
- $flds = implode(', ',$flds);
- $s .= '(' . $flds . ')';
- $sql[] = $s;
-
- return $sql;
- }
- }
- ?>