adodb-postgres64.inc.php

php聊天源码

				foreach($keys as $key) {
					if ($fld->name == $key['column_name'] AND $key['primary_key'] == $this->true) 
						$fld->primary_key = true;
					if ($fld->name == $key['column_name'] AND $key['unique_key'] == $this->true) 
						$fld->unique = true; // What name is more compatible?
				}
			}
			
			if ($ADODB_FETCH_MODE == ADODB_FETCH_NUM) $retarr[] = $fld;	
			else $retarr[($normalize) ? strtoupper($fld->name) : $fld->name] = $fld;
			
			$rs->MoveNext();
		}
		$rs->Close();
		return $retarr;	
		
	}

	  function &MetaIndexes ($table, $primary = FALSE)
      {
         global $ADODB_FETCH_MODE;
                
				$schema = false;
				$this->_findschema($table,$schema);

				if ($schema) { // requires pgsql 7.3+ - pg_namespace used.
					$sql = '
SELECT c.relname as "Name", i.indisunique as "Unique", i.indkey as "Columns" 
FROM pg_catalog.pg_class c 
JOIN pg_catalog.pg_index i ON i.indexrelid=c.oid 
JOIN pg_catalog.pg_class c2 ON c2.oid=i.indrelid
	,pg_namespace n 
WHERE (c2.relname=\'%s\' or c2.relname=lower(\'%s\')) and c.relnamespace=c2.relnamespace and c.relnamespace=n.oid and n.nspname=\'%s\' AND i.indisprimary=false';
				} else {
	                $sql = '
SELECT c.relname as "Name", i.indisunique as "Unique", i.indkey as "Columns"
FROM pg_catalog.pg_class c
JOIN pg_catalog.pg_index i ON i.indexrelid=c.oid
JOIN pg_catalog.pg_class c2 ON c2.oid=i.indrelid
WHERE c2.relname=\'%s\' or c2.relname=lower(\'%s\')';
    			}
				            
                if ($primary == FALSE) {
                	$sql .= ' AND i.indisprimary=false;';
                }
                
                $save = $ADODB_FETCH_MODE;
                $ADODB_FETCH_MODE = ADODB_FETCH_NUM;
                if ($this->fetchMode !== FALSE) {
                        $savem = $this->SetFetchMode(FALSE);
                }
                
                $rs = $this->Execute(sprintf($sql,$table,$table,$schema));
                if (isset($savem)) {
                        $this->SetFetchMode($savem);
                }
                $ADODB_FETCH_MODE = $save;

                if (!is_object($rs)) {
                	return FALSE;
                }
				
                $col_names = $this->MetaColumnNames($table,true);
                $indexes = array();
                while ($row = $rs->FetchRow()) {
                        $columns = array();
                        foreach (explode(' ', $row[2]) as $col) {
                                $columns[] = $col_names[$col - 1];
                        }
                        
                        $indexes[$row[0]] = array(
                                'unique' => ($row[1] == 't'),
                                'columns' => $columns
                        );
                }
                return $indexes;
        }

	// returns true or false
	//
	// examples:
	// 	$db->Connect("host=host1 user=user1 password=secret port=4341");
	// 	$db->Connect('host1','user1','secret');
	function _connect($str,$user='',$pwd='',$db='',$ctype=0)
	{
		
		if (!function_exists('pg_pconnect')) return null;
		
		$this->_errorMsg = false;
		
		if ($user || $pwd || $db) {
			$user = adodb_addslashes($user);
			$pwd = adodb_addslashes($pwd);
			if (strlen($db) == 0) $db = 'template1';
			$db = adodb_addslashes($db);
		   	if ($str)  {
			 	$host = split(":", $str);
				if ($host[0]) $str = "host=".adodb_addslashes($host[0]);
				else $str = 'host=localhost';
				if (isset($host[1])) $str .= " port=$host[1]";
			}
		   		if ($user) $str .= " user=".$user;
		   		if ($pwd)  $str .= " password=".$pwd;
				if ($db)   $str .= " dbname=".$db;
		}

		//if ($user) $linea = "user=$user host=$linea password=$pwd dbname=$db port=5432";
		
		if ($ctype === 1) { // persistent
			$this->_connectionID = pg_pconnect($str);
		} else {
			if ($ctype === -1) { // nconnect, we trick pgsql ext by changing the connection str
			static $ncnt;
			
				if (empty($ncnt)) $ncnt = 1;
				else $ncnt += 1;
				
				$str .= str_repeat(' ',$ncnt);
			}
			$this->_connectionID = pg_connect($str);
		}
		if ($this->_connectionID === false) return false;
		$this->Execute("set datestyle='ISO'");
		return true;
	}
	
	function _nconnect($argHostname, $argUsername, $argPassword, $argDatabaseName)
	{
	 	return $this->_connect($argHostname, $argUsername, $argPassword, $argDatabaseName,-1);
	}
	 
	// returns true or false
	//
	// examples:
	// 	$db->PConnect("host=host1 user=user1 password=secret port=4341");
	// 	$db->PConnect('host1','user1','secret');
	function _pconnect($str,$user='',$pwd='',$db='')
	{
		return $this->_connect($str,$user,$pwd,$db,1);
	}
	

	// returns queryID or false
	function _query($sql,$inputarr)
	{
		
		if ($inputarr) {
		/*
			It appears that PREPARE/EXECUTE is slower for many queries.
			
			For query executed 1000 times:
			"select id,firstname,lastname from adoxyz 
				where firstname not like ? and lastname not like ? and id = ?"
				
			with plan = 1.51861286163 secs
			no plan =   1.26903700829 secs

			

		*/
			$plan = 'P'.md5($sql);
				
			$execp = '';
			foreach($inputarr as $v) {
				if ($execp) $execp .= ',';
				if (is_string($v)) {
					if (strncmp($v,"'",1) !== 0) $execp .= $this->qstr($v);
				} else {
					$execp .= $v;
				}
			}
			
			if ($execp) $exsql = "EXECUTE $plan ($execp)";
			else $exsql = "EXECUTE $plan";
			
			$rez = @pg_exec($this->_connectionID,$exsql);
			if (!$rez) {
			# Perhaps plan does not exist? Prepare/compile plan.
				$params = '';
				foreach($inputarr as $v) {
					if ($params) $params .= ',';
					if (is_string($v)) {
						$params .= 'VARCHAR';
					} else if (is_integer($v)) {
						$params .= 'INTEGER';
					} else {
						$params .= "REAL";
					}
				}
				$sqlarr = explode('?',$sql);
				//print_r($sqlarr);
				$sql = '';
				$i = 1;
				foreach($sqlarr as $v) {
					$sql .= $v.' $'.$i;
					$i++;
				}
				$s = "PREPARE $plan ($params) AS ".substr($sql,0,strlen($sql)-2);		
				//adodb_pr($s);
				pg_exec($this->_connectionID,$s);
				echo $this->ErrorMsg();
			}
			
			$rez = pg_exec($this->_connectionID,$exsql);
		} else {
			$this->_errorMsg = false;
			//adodb_backtrace();
			$rez = pg_exec($this->_connectionID,$sql);
		}
		// check if no data returned, then no need to create real recordset
		if ($rez && pg_numfields($rez) <= 0) {
			if (is_resource($this->_resultid) && get_resource_type($this->_resultid) === 'pgsql result') {
				pg_freeresult($this->_resultid);
			}
			$this->_resultid = $rez;
			return true;
		}
		
		return $rez;
	}
	

	/*	Returns: the last error message from previous database operation	*/	
	function ErrorMsg() 
	{
		if ($this->_errorMsg !== false) return $this->_errorMsg;
		if (ADODB_PHPVER >= 0x4300) {
			if (!empty($this->_resultid)) {
				$this->_errorMsg = @pg_result_error($this->_resultid);
				if ($this->_errorMsg) return $this->_errorMsg;
			}
			
			if (!empty($this->_connectionID)) {
				$this->_errorMsg = @pg_last_error($this->_connectionID);
			} else $this->_errorMsg = @pg_last_error();
		} else {
			if (empty($this->_connectionID)) $this->_errorMsg = @pg_errormessage();
			else $this->_errorMsg = @pg_errormessage($this->_connectionID);
		}
		return $this->_errorMsg;
	}
	
	function ErrorNo()
	{
		$e = $this->ErrorMsg();
		if (strlen($e)) {
			return ADOConnection::MetaError($e);
		 }
		 return 0;
	}

	// returns true or false
	function _close()
	{
		if ($this->transCnt) $this->RollbackTrans();
		if ($this->_resultid) {
			@pg_freeresult($this->_resultid);
			$this->_resultid = false;
		}
		@pg_close($this->_connectionID);
		$this->_connectionID = false;
		return true;
	}
	
	
	/*
	* Maximum size of C field
	*/
	function CharMax()
	{
		return 1000000000;  // should be 1 Gb?
	}
	
	/*
	* Maximum size of X field
	*/
	function TextMax()
	{
		return 1000000000; // should be 1 Gb?
	}
	
}
	
/*--------------------------------------------------------------------------------------
	 Class Name: Recordset
--------------------------------------------------------------------------------------*/

class ADORecordSet_postgres64 extends ADORecordSet{
	public $_blobArr;
	public $databaseType = "postgres64";
	public $canSeek = true;
	function ADORecordSet_postgres64($queryID,$mode=false) 
	{
		if ($mode === false) { 
			global $ADODB_FETCH_MODE;
			$mode = $ADODB_FETCH_MODE;
		}
		switch ($mode)
		{
		case ADODB_FETCH_NUM: $this->fetchMode = PGSQL_NUM; break;
		case ADODB_FETCH_ASSOC:$this->fetchMode = PGSQL_ASSOC; break;
		default:
		case ADODB_FETCH_DEFAULT:
		case ADODB_FETCH_BOTH:$this->fetchMode = PGSQL_BOTH; break;
		}
		$this->ADORecordSet($queryID);
	}
	
	function &GetRowAssoc($upper=true)
	{
		if ($this->fetchMode == PGSQL_ASSOC && !$upper) return $this->fields;
		$row =& ADORecordSet::GetRowAssoc($upper);
		return $row;
	}

	function _initrs()
	{
	global $ADODB_COUNTRECS;
		$qid = $this->_queryID;
		$this->_numOfRows = ($ADODB_COUNTRECS)? @pg_numrows($qid):-1;
		$this->_numOfFields = @pg_numfields($qid);
		
		// cache types for blob decode check
		for ($i=0, $max = $this->_numOfFields; $i < $max; $i++) {  
			if (pg_fieldtype($qid,$i) == 'bytea') {
				$this->_blobArr[$i] = pg_fieldname($qid,$i);
			}
		}
	}

		/* Use associative array to get fields array */
	function Fields($colname)
	{
		if ($this->fetchMode != PGSQL_NUM) return @$this->fields[$colname];
		
		if (!$this->bind) {
			$this->bind = array();
			for ($i=0; $i < $this->_numOfFields; $i++) {
				$o = $this->FetchField($i);
				$this->bind[strtoupper($o->name)] = $i;
			}
		}
		 return $this->fields[$this->bind[strtoupper($colname)]];
	}

	function &FetchField($off = 0) 
	{
		// offsets begin at 0
		
		$o= new ADOFieldObject();
		$o->name = @pg_fieldname($this->_queryID,$off);
		$o->type = @pg_fieldtype($this->_queryID,$off);
		$o->max_length = @pg_fieldsize($this->_queryID,$off);
		return $o;	
	}

	function _seek($row)
	{
		return @pg_fetch_row($this->_queryID,$row);
	}
	
	function _decode($blob)
	{
		eval('$realblob="'.adodb_str_replace(array('"','$'),array('\"','\$'),$blob).'";');
		return $realblob;	
	}
	
	function _fixblobs()
	{
		if ($this->fetchMode == PGSQL_NUM || $this->fetchMode == PGSQL_BOTH) {
			foreach($this->_blobArr as $k => $v) {
				$this->fields[$k] = ADORecordSet_postgres64::_decode($this->fields[$k]);
			}
		}
		if ($this->fetchMode == PGSQL_ASSOC || $this->fetchMode == PGSQL_BOTH) {
			foreach($this->_blobArr as $k => $v) {
				$this->fields[$v] = ADORecordSet_postgres64::_decode($this->fields[$v]);
			}
		}
	}
	
	// 10% speedup to move MoveNext to child class
	function MoveNext() 
	{
		if (!$this->EOF) {
			$this->_currentRow++;
			if ($this->_numOfRows < 0 || $this->_numOfRows > $this->_currentRow) {
				$this->fields = @pg_fetch_array($this->_queryID,$this->_currentRow,$this->fetchMode);
				if (is_array($this->fields) && $this->fields) {
					if (isset($this->_blobArr)) $this->_fixblobs();
					return true;
				}
			}
			$this->fields = false;
			$this->EOF = true;
		}
		return false;
	}		
	
	function _fetch()
	{
				
		if ($this->_currentRow >= $this->_numOfRows && $this->_numOfRows >= 0)
        	return false;

		$this->fields = @pg_fetch_array($this->_queryID,$this->_currentRow,$this->fetchMode);
		
	if ($this->fields && isset($this->_blobArr)) $this->_fixblobs();
			
		return (is_array($this->fields));
	}

	function _close() 
	{ 
		return @pg_freeresult($this->_queryID);
	}

	function MetaType($t,$len=-1,$fieldobj=false)
	{
		if (is_object($t)) {
			$fieldobj = $t;
			$t = $fieldobj->type;
			$len = $fieldobj->max_length;
		}
		switch (strtoupper($t)) {
				case 'MONEY': // stupid, postgres expects money to be a string
				case 'INTERVAL':
				case 'CHAR':
				case 'CHARACTER':
				case 'VARCHAR':
				case 'NAME':
		   		case 'BPCHAR':
				case '_VARCHAR':
					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 'SMALLINT': 
				case 'BIGINT': 
				case 'INTEGER': 
				case 'INT8': 
				case 'INT4':
				case 'INT2':
					if (isset($fieldobj) &&
				empty($fieldobj->primary_key) && empty($fieldobj->unique)) return 'I';
				
				case 'OID':
				case 'SERIAL':
					return 'R';
				
				 default:
				 	return 'N';
			}
	}

}
?>