1<?php
2/*
3  @version   v5.20.16  12-Jan-2020
4  @copyright (c) 2000-2013 John Lim (jlim#natsoft.com). All rights reserved.
5  @copyright (c) 2014      Damien Regad, Mark Newnham and the ADOdb community
6
7  First cut at the Netezza Driver by Josh Eldridge joshuae74#hotmail.com
8 Based on the previous postgres drivers.
9 http://www.netezza.com/
10 Major Additions/Changes:
11    MetaDatabasesSQL, MetaTablesSQL, MetaColumnsSQL
12    Note: You have to have admin privileges to access the system tables
13    Removed non-working keys code (Netezza has no concept of keys)
14    Fixed the way data types and lengths are returned in MetaColumns()
15    as well as added the default lengths for certain types
16    Updated public variables for Netezza
17    Still need to remove blob functions, as Netezza doesn't suppport blob
18*/
19// security - hide paths
20if (!defined('ADODB_DIR')) die();
21
22include_once(ADODB_DIR.'/drivers/adodb-postgres64.inc.php');
23
24class ADODB_netezza extends ADODB_postgres64 {
25    var $databaseType = 'netezza';
26	var $dataProvider = 'netezza';
27	var $hasInsertID = false;
28	var $_resultid = false;
29  	var $concat_operator='||';
30  	var $random = 'random';
31	var $metaDatabasesSQL = "select objname from _v_object_data where objtype='database' order by 1";
32    var $metaTablesSQL = "select objname from _v_object_data where objtype='table' order by 1";
33	var $isoDates = true; // accepts dates in ISO format
34	var $sysDate = "CURRENT_DATE";
35	var $sysTimeStamp = "CURRENT_TIMESTAMP";
36	var $blobEncodeType = 'C';
37	var $metaColumnsSQL = "SELECT attname, atttype FROM _v_relation_column_def WHERE name = '%s' AND attnum > 0 ORDER BY attnum";
38	var $metaColumnsSQL1 = "SELECT attname, atttype FROM _v_relation_column_def WHERE name = '%s' AND attnum > 0 ORDER BY attnum";
39	// netezza doesn't have keys. it does have distributions, so maybe this is
40	// something that can be pulled from the system tables
41	var $metaKeySQL = "";
42	var $hasAffectedRows = true;
43	var $hasLimit = true;
44	var $true = 't';		// string that represents TRUE for a database
45	var $false = 'f';		// string that represents FALSE for a database
46	var $fmtDate = "'Y-m-d'";	// used by DBDate() as the default date format used by the database
47	var $fmtTimeStamp = "'Y-m-d G:i:s'"; // used by DBTimeStamp as the default timestamp fmt.
48	var $ansiOuter = true;
49	var $autoRollback = true; // apparently pgsql does not autorollback properly before 4.3.4
50							// http://bugs.php.net/bug.php?id=25404
51
52
53	function __construct()
54	{
55
56	}
57
58	function MetaColumns($table,$upper=true)
59	{
60
61	// Changed this function to support Netezza which has no concept of keys
62	// could posisbly work on other things from the system table later.
63
64	global $ADODB_FETCH_MODE;
65
66		$table = strtolower($table);
67
68		$save = $ADODB_FETCH_MODE;
69		$ADODB_FETCH_MODE = ADODB_FETCH_NUM;
70		if ($this->fetchMode !== false) $savem = $this->SetFetchMode(false);
71
72		$rs = $this->Execute(sprintf($this->metaColumnsSQL,$table,$table));
73		if (isset($savem)) $this->SetFetchMode($savem);
74		$ADODB_FETCH_MODE = $save;
75
76		if ($rs === false) return false;
77
78		$retarr = array();
79		while (!$rs->EOF) {
80			$fld = new ADOFieldObject();
81			$fld->name = $rs->fields[0];
82
83			// since we're returning type and length as one string,
84			// split them out here.
85
86			if ($first = strstr($rs->fields[1], "(")) {
87			 $fld->max_length = trim($first, "()");
88			} else {
89			 $fld->max_length = -1;
90			}
91
92			if ($first = strpos($rs->fields[1], "(")) {
93			 $fld->type = substr($rs->fields[1], 0, $first);
94			} else {
95			 $fld->type = $rs->fields[1];
96			}
97
98			switch ($fld->type) {
99			 case "byteint":
100			 case "boolean":
101			 $fld->max_length = 1;
102			 break;
103			 case "smallint":
104			 $fld->max_length = 2;
105			 break;
106			 case "integer":
107			 case "numeric":
108			 case "date":
109			 $fld->max_length = 4;
110			 break;
111			 case "bigint":
112			 case "time":
113			 case "timestamp":
114			 $fld->max_length = 8;
115			 break;
116			 case "timetz":
117			 case "time with time zone":
118			 $fld->max_length = 12;
119			 break;
120			}
121
122			if ($ADODB_FETCH_MODE == ADODB_FETCH_NUM) $retarr[] = $fld;
123			else $retarr[($upper) ? strtoupper($fld->name) : $fld->name] = $fld;
124
125			$rs->MoveNext();
126		}
127		$rs->Close();
128		return $retarr;
129
130	}
131
132
133}
134
135/*--------------------------------------------------------------------------------------
136	 Class Name: Recordset
137--------------------------------------------------------------------------------------*/
138
139class ADORecordSet_netezza extends ADORecordSet_postgres64
140{
141	var $databaseType = "netezza";
142	var $canSeek = true;
143
144	function __construct($queryID,$mode=false)
145	{
146		parent::__construct($queryID,$mode);
147	}
148
149	// _initrs modified to disable blob handling
150	function _initrs()
151	{
152	global $ADODB_COUNTRECS;
153		$this->_numOfRows = ($ADODB_COUNTRECS)? @pg_num_rows($this->_queryID):-1;
154		$this->_numOfFields = @pg_num_fields($this->_queryID);
155	}
156
157}
158