diff options
Diffstat (limited to 'program/lib/DB/pgsql.php')
| -rw-r--r-- | program/lib/DB/pgsql.php | 1116 |
1 files changed, 0 insertions, 1116 deletions
diff --git a/program/lib/DB/pgsql.php b/program/lib/DB/pgsql.php deleted file mode 100644 index fc3762a65..000000000 --- a/program/lib/DB/pgsql.php +++ /dev/null @@ -1,1116 +0,0 @@ -<?php - -/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */ - -/** - * The PEAR DB driver for PHP's pgsql extension - * for interacting with PostgreSQL databases - * - * PHP versions 4 and 5 - * - * LICENSE: This source file is subject to version 3.0 of the PHP license - * that is available through the world-wide-web at the following URI: - * http://www.php.net/license/3_0.txt. If you did not receive a copy of - * the PHP License and are unable to obtain it through the web, please - * send a note to license@php.net so we can mail you a copy immediately. - * - * @category Database - * @package DB - * @author Rui Hirokawa <hirokawa@php.net> - * @author Stig Bakken <ssb@php.net> - * @author Daniel Convissor <danielc@php.net> - * @copyright 1997-2007 The PHP Group - * @license http://www.php.net/license/3_0.txt PHP License 3.0 - * @version CVS: $Id$ - * @link http://pear.php.net/package/DB - */ - -/** - * Obtain the DB_common class so it can be extended from - */ -require_once 'DB/common.php'; - -/** - * The methods PEAR DB uses to interact with PHP's pgsql extension - * for interacting with PostgreSQL databases - * - * These methods overload the ones declared in DB_common. - * - * @category Database - * @package DB - * @author Rui Hirokawa <hirokawa@php.net> - * @author Stig Bakken <ssb@php.net> - * @author Daniel Convissor <danielc@php.net> - * @copyright 1997-2007 The PHP Group - * @license http://www.php.net/license/3_0.txt PHP License 3.0 - * @version Release: 1.7.13 - * @link http://pear.php.net/package/DB - */ -class DB_pgsql extends DB_common -{ - // {{{ properties - - /** - * The DB driver type (mysql, oci8, odbc, etc.) - * @var string - */ - var $phptype = 'pgsql'; - - /** - * The database syntax variant to be used (db2, access, etc.), if any - * @var string - */ - var $dbsyntax = 'pgsql'; - - /** - * The capabilities of this DB implementation - * - * The 'new_link' element contains the PHP version that first provided - * new_link support for this DBMS. Contains false if it's unsupported. - * - * Meaning of the 'limit' element: - * + 'emulate' = emulate with fetch row by number - * + 'alter' = alter the query - * + false = skip rows - * - * @var array - */ - var $features = array( - 'limit' => 'alter', - 'new_link' => '4.3.0', - 'numrows' => true, - 'pconnect' => true, - 'prepare' => false, - 'ssl' => true, - 'transactions' => true, - ); - - /** - * A mapping of native error codes to DB error codes - * @var array - */ - var $errorcode_map = array( - ); - - /** - * The raw database connection created by PHP - * @var resource - */ - var $connection; - - /** - * The DSN information for connecting to a database - * @var array - */ - var $dsn = array(); - - - /** - * Should data manipulation queries be committed automatically? - * @var bool - * @access private - */ - var $autocommit = true; - - /** - * The quantity of transactions begun - * - * {@internal While this is private, it can't actually be designated - * private in PHP 5 because it is directly accessed in the test suite.}} - * - * @var integer - * @access private - */ - var $transaction_opcount = 0; - - /** - * The number of rows affected by a data manipulation query - * @var integer - */ - var $affected = 0; - - /** - * The current row being looked at in fetchInto() - * @var array - * @access private - */ - var $row = array(); - - /** - * The number of rows in a given result set - * @var array - * @access private - */ - var $_num_rows = array(); - - - // }}} - // {{{ constructor - - /** - * This constructor calls <kbd>$this->DB_common()</kbd> - * - * @return void - */ - function DB_pgsql() - { - $this->DB_common(); - } - - // }}} - // {{{ connect() - - /** - * Connect to the database server, log in and open the database - * - * Don't call this method directly. Use DB::connect() instead. - * - * PEAR DB's pgsql driver supports the following extra DSN options: - * + connect_timeout How many seconds to wait for a connection to - * be established. Available since PEAR DB 1.7.0. - * + new_link If set to true, causes subsequent calls to - * connect() to return a new connection link - * instead of the existing one. WARNING: this is - * not portable to other DBMS's. Available only - * if PHP is >= 4.3.0 and PEAR DB is >= 1.7.0. - * + options Command line options to be sent to the server. - * Available since PEAR DB 1.6.4. - * + service Specifies a service name in pg_service.conf that - * holds additional connection parameters. - * Available since PEAR DB 1.7.0. - * + sslmode How should SSL be used when connecting? Values: - * disable, allow, prefer or require. - * Available since PEAR DB 1.7.0. - * + tty This was used to specify where to send server - * debug output. Available since PEAR DB 1.6.4. - * - * Example of connecting to a new link via a socket: - * <code> - * require_once 'DB.php'; - * - * $dsn = 'pgsql://user:pass@unix(/tmp)/dbname?new_link=true'; - * $options = array( - * 'portability' => DB_PORTABILITY_ALL, - * ); - * - * $db = DB::connect($dsn, $options); - * if (PEAR::isError($db)) { - * die($db->getMessage()); - * } - * </code> - * - * @param array $dsn the data source name - * @param bool $persistent should the connection be persistent? - * - * @return int DB_OK on success. A DB_Error object on failure. - * - * @link http://www.postgresql.org/docs/current/static/libpq.html#LIBPQ-CONNECT - */ - function connect($dsn, $persistent = false) - { - if (!PEAR::loadExtension('pgsql')) { - return $this->raiseError(DB_ERROR_EXTENSION_NOT_FOUND); - } - - $this->dsn = $dsn; - if ($dsn['dbsyntax']) { - $this->dbsyntax = $dsn['dbsyntax']; - } - - $protocol = $dsn['protocol'] ? $dsn['protocol'] : 'tcp'; - - $params = array(''); - if ($protocol == 'tcp') { - if ($dsn['hostspec']) { - $params[0] .= 'host=' . $dsn['hostspec']; - } - if ($dsn['port']) { - $params[0] .= ' port=' . $dsn['port']; - } - } elseif ($protocol == 'unix') { - // Allow for pg socket in non-standard locations. - if ($dsn['socket']) { - $params[0] .= 'host=' . $dsn['socket']; - } - if ($dsn['port']) { - $params[0] .= ' port=' . $dsn['port']; - } - } - if ($dsn['database']) { - $params[0] .= ' dbname=\'' . addslashes($dsn['database']) . '\''; - } - if ($dsn['username']) { - $params[0] .= ' user=\'' . addslashes($dsn['username']) . '\''; - } - if ($dsn['password']) { - $params[0] .= ' password=\'' . addslashes($dsn['password']) . '\''; - } - if (!empty($dsn['options'])) { - $params[0] .= ' options=' . $dsn['options']; - } - if (!empty($dsn['tty'])) { - $params[0] .= ' tty=' . $dsn['tty']; - } - if (!empty($dsn['connect_timeout'])) { - $params[0] .= ' connect_timeout=' . $dsn['connect_timeout']; - } - if (!empty($dsn['sslmode'])) { - $params[0] .= ' sslmode=' . $dsn['sslmode']; - } - if (!empty($dsn['service'])) { - $params[0] .= ' service=' . $dsn['service']; - } - - if (isset($dsn['new_link']) - && ($dsn['new_link'] == 'true' || $dsn['new_link'] === true)) - { - if (version_compare(phpversion(), '4.3.0', '>=')) { - $params[] = PGSQL_CONNECT_FORCE_NEW; - } - } - - $connect_function = $persistent ? 'pg_pconnect' : 'pg_connect'; - - $ini = ini_get('track_errors'); - $php_errormsg = ''; - if ($ini) { - $this->connection = @call_user_func_array($connect_function, - $params); - } else { - @ini_set('track_errors', 1); - $this->connection = @call_user_func_array($connect_function, - $params); - @ini_set('track_errors', $ini); - } - - if (!$this->connection) { - return $this->raiseError(DB_ERROR_CONNECT_FAILED, - null, null, null, - $php_errormsg); - } - return DB_OK; - } - - // }}} - // {{{ disconnect() - - /** - * Disconnects from the database server - * - * @return bool TRUE on success, FALSE on failure - */ - function disconnect() - { - $ret = @pg_close($this->connection); - $this->connection = null; - return $ret; - } - - // }}} - // {{{ simpleQuery() - - /** - * Sends a query to the database server - * - * @param string the SQL query string - * - * @return mixed + a PHP result resrouce for successful SELECT queries - * + the DB_OK constant for other successful queries - * + a DB_Error object on failure - */ - function simpleQuery($query) - { - $ismanip = $this->_checkManip($query); - $this->last_query = $query; - $query = $this->modifyQuery($query); - if (!$this->autocommit && $ismanip) { - if ($this->transaction_opcount == 0) { - $result = @pg_exec($this->connection, 'begin;'); - if (!$result) { - return $this->pgsqlRaiseError(); - } - } - $this->transaction_opcount++; - } - $result = @pg_exec($this->connection, $query); - if (!$result) { - return $this->pgsqlRaiseError(); - } - - /* - * Determine whether queries produce affected rows, result or nothing. - * - * This logic was introduced in version 1.1 of the file by ssb, - * though the regex has been modified slightly since then. - * - * PostgreSQL commands: - * ABORT, ALTER, BEGIN, CLOSE, CLUSTER, COMMIT, COPY, - * CREATE, DECLARE, DELETE, DROP TABLE, EXPLAIN, FETCH, - * GRANT, INSERT, LISTEN, LOAD, LOCK, MOVE, NOTIFY, RESET, - * REVOKE, ROLLBACK, SELECT, SELECT INTO, SET, SHOW, - * UNLISTEN, UPDATE, VACUUM - */ - if ($ismanip) { - $this->affected = @pg_affected_rows($result); - return DB_OK; - } elseif (preg_match('/^\s*\(*\s*(SELECT|EXPLAIN|FETCH|SHOW)\s/si', - $query)) - { - $this->row[(int)$result] = 0; // reset the row counter. - $numrows = $this->numRows($result); - if (is_object($numrows)) { - return $numrows; - } - $this->_num_rows[(int)$result] = $numrows; - $this->affected = 0; - return $result; - } else { - $this->affected = 0; - return DB_OK; - } - } - - // }}} - // {{{ nextResult() - - /** - * Move the internal pgsql result pointer to the next available result - * - * @param a valid fbsql result resource - * - * @access public - * - * @return true if a result is available otherwise return false - */ - function nextResult($result) - { - return false; - } - - // }}} - // {{{ fetchInto() - - /** - * Places a row from the result set into the given array - * - * Formating of the array and the data therein are configurable. - * See DB_result::fetchInto() for more information. - * - * This method is not meant to be called directly. Use - * DB_result::fetchInto() instead. It can't be declared "protected" - * because DB_result is a separate object. - * - * @param resource $result the query result resource - * @param array $arr the referenced array to put the data in - * @param int $fetchmode how the resulting array should be indexed - * @param int $rownum the row number to fetch (0 = first row) - * - * @return mixed DB_OK on success, NULL when the end of a result set is - * reached or on failure - * - * @see DB_result::fetchInto() - */ - function fetchInto($result, &$arr, $fetchmode, $rownum = null) - { - $result_int = (int)$result; - $rownum = ($rownum !== null) ? $rownum : $this->row[$result_int]; - if ($rownum >= $this->_num_rows[$result_int]) { - return null; - } - if ($fetchmode & DB_FETCHMODE_ASSOC) { - $arr = @pg_fetch_array($result, $rownum, PGSQL_ASSOC); - if ($this->options['portability'] & DB_PORTABILITY_LOWERCASE && $arr) { - $arr = array_change_key_case($arr, CASE_LOWER); - } - } else { - $arr = @pg_fetch_row($result, $rownum); - } - if (!$arr) { - return null; - } - if ($this->options['portability'] & DB_PORTABILITY_RTRIM) { - $this->_rtrimArrayValues($arr); - } - if ($this->options['portability'] & DB_PORTABILITY_NULL_TO_EMPTY) { - $this->_convertNullArrayValuesToEmpty($arr); - } - $this->row[$result_int] = ++$rownum; - return DB_OK; - } - - // }}} - // {{{ freeResult() - - /** - * Deletes the result set and frees the memory occupied by the result set - * - * This method is not meant to be called directly. Use - * DB_result::free() instead. It can't be declared "protected" - * because DB_result is a separate object. - * - * @param resource $result PHP's query result resource - * - * @return bool TRUE on success, FALSE if $result is invalid - * - * @see DB_result::free() - */ - function freeResult($result) - { - if (is_resource($result)) { - unset($this->row[(int)$result]); - unset($this->_num_rows[(int)$result]); - $this->affected = 0; - return @pg_freeresult($result); - } - return false; - } - - // }}} - // {{{ quote() - - /** - * @deprecated Deprecated in release 1.6.0 - * @internal - */ - function quote($str) - { - return $this->quoteSmart($str); - } - - // }}} - // {{{ quoteBoolean() - - /** - * Formats a boolean value for use within a query in a locale-independent - * manner. - * - * @param boolean the boolean value to be quoted. - * @return string the quoted string. - * @see DB_common::quoteSmart() - * @since Method available since release 1.7.8. - */ - function quoteBoolean($boolean) { - return $boolean ? 'TRUE' : 'FALSE'; - } - - // }}} - // {{{ escapeSimple() - - /** - * Escapes a string according to the current DBMS's standards - * - * {@internal PostgreSQL treats a backslash as an escape character, - * so they are escaped as well. - * - * @param string $str the string to be escaped - * - * @return string the escaped string - * - * @see DB_common::quoteSmart() - * @since Method available since Release 1.6.0 - */ - function escapeSimple($str) - { - if (function_exists('pg_escape_string')) { - /* This fixes an undocumented BC break in PHP 5.2.0 which changed - * the prototype of pg_escape_string. I'm not thrilled about having - * to sniff the PHP version, quite frankly, but it's the only way - * to deal with the problem. Revision 1.331.2.13.2.10 on - * php-src/ext/pgsql/pgsql.c (PHP_5_2 branch) is to blame, for the - * record. */ - if (version_compare(PHP_VERSION, '5.2.0', '>=')) { - return pg_escape_string($this->connection, $str); - } else { - return pg_escape_string($str); - } - } else { - return str_replace("'", "''", str_replace('\\', '\\\\', $str)); - } - } - - // }}} - // {{{ numCols() - - /** - * Gets the number of columns in a result set - * - * This method is not meant to be called directly. Use - * DB_result::numCols() instead. It can't be declared "protected" - * because DB_result is a separate object. - * - * @param resource $result PHP's query result resource - * - * @return int the number of columns. A DB_Error object on failure. - * - * @see DB_result::numCols() - */ - function numCols($result) - { - $cols = @pg_numfields($result); - if (!$cols) { - return $this->pgsqlRaiseError(); - } - return $cols; - } - - // }}} - // {{{ numRows() - - /** - * Gets the number of rows in a result set - * - * This method is not meant to be called directly. Use - * DB_result::numRows() instead. It can't be declared "protected" - * because DB_result is a separate object. - * - * @param resource $result PHP's query result resource - * - * @return int the number of rows. A DB_Error object on failure. - * - * @see DB_result::numRows() - */ - function numRows($result) - { - $rows = @pg_numrows($result); - if ($rows === null) { - return $this->pgsqlRaiseError(); - } - return $rows; - } - - // }}} - // {{{ autoCommit() - - /** - * Enables or disables automatic commits - * - * @param bool $onoff true turns it on, false turns it off - * - * @return int DB_OK on success. A DB_Error object if the driver - * doesn't support auto-committing transactions. - */ - function autoCommit($onoff = false) - { - // XXX if $this->transaction_opcount > 0, we should probably - // issue a warning here. - $this->autocommit = $onoff ? true : false; - return DB_OK; - } - - // }}} - // {{{ commit() - - /** - * Commits the current transaction - * - * @return int DB_OK on success. A DB_Error object on failure. - */ - function commit() - { - if ($this->transaction_opcount > 0) { - // (disabled) hack to shut up error messages from libpq.a - //@fclose(@fopen("php://stderr", "w")); - $result = @pg_exec($this->connection, 'end;'); - $this->transaction_opcount = 0; - if (!$result) { - return $this->pgsqlRaiseError(); - } - } - return DB_OK; - } - - // }}} - // {{{ rollback() - - /** - * Reverts the current transaction - * - * @return int DB_OK on success. A DB_Error object on failure. - */ - function rollback() - { - if ($this->transaction_opcount > 0) { - $result = @pg_exec($this->connection, 'abort;'); - $this->transaction_opcount = 0; - if (!$result) { - return $this->pgsqlRaiseError(); - } - } - return DB_OK; - } - - // }}} - // {{{ affectedRows() - - /** - * Determines the number of rows affected by a data maniuplation query - * - * 0 is returned for queries that don't manipulate data. - * - * @return int the number of rows. A DB_Error object on failure. - */ - function affectedRows() - { - return $this->affected; - } - - // }}} - // {{{ nextId() - - /** - * Returns the next free id in a sequence - * - * @param string $seq_name name of the sequence - * @param boolean $ondemand when true, the seqence is automatically - * created if it does not exist - * - * @return int the next id number in the sequence. - * A DB_Error object on failure. - * - * @see DB_common::nextID(), DB_common::getSequenceName(), - * DB_pgsql::createSequence(), DB_pgsql::dropSequence() - */ - function nextId($seq_name, $ondemand = true) - { - $seqname = $this->getSequenceName($seq_name); - $repeat = false; - do { - $this->pushErrorHandling(PEAR_ERROR_RETURN); - $result = $this->query("SELECT NEXTVAL('${seqname}')"); - $this->popErrorHandling(); - if ($ondemand && DB::isError($result) && - $result->getCode() == DB_ERROR_NOSUCHTABLE) { - $repeat = true; - $this->pushErrorHandling(PEAR_ERROR_RETURN); - $result = $this->createSequence($seq_name); - $this->popErrorHandling(); - if (DB::isError($result)) { - return $this->raiseError($result); - } - } else { - $repeat = false; - } - } while ($repeat); - if (DB::isError($result)) { - return $this->raiseError($result); - } - $arr = $result->fetchRow(DB_FETCHMODE_ORDERED); - $result->free(); - return $arr[0]; - } - - // }}} - // {{{ createSequence() - - /** - * Creates a new sequence - * - * @param string $seq_name name of the new sequence - * - * @return int DB_OK on success. A DB_Error object on failure. - * - * @see DB_common::createSequence(), DB_common::getSequenceName(), - * DB_pgsql::nextID(), DB_pgsql::dropSequence() - */ - function createSequence($seq_name) - { - $seqname = $this->getSequenceName($seq_name); - $result = $this->query("CREATE SEQUENCE ${seqname}"); - return $result; - } - - // }}} - // {{{ dropSequence() - - /** - * Deletes a sequence - * - * @param string $seq_name name of the sequence to be deleted - * - * @return int DB_OK on success. A DB_Error object on failure. - * - * @see DB_common::dropSequence(), DB_common::getSequenceName(), - * DB_pgsql::nextID(), DB_pgsql::createSequence() - */ - function dropSequence($seq_name) - { - return $this->query('DROP SEQUENCE ' - . $this->getSequenceName($seq_name)); - } - - // }}} - // {{{ modifyLimitQuery() - - /** - * Adds LIMIT clauses to a query string according to current DBMS standards - * - * @param string $query the query to modify - * @param int $from the row to start to fetching (0 = the first row) - * @param int $count the numbers of rows to fetch - * @param mixed $params array, string or numeric data to be used in - * execution of the statement. Quantity of items - * passed must match quantity of placeholders in - * query: meaning 1 placeholder for non-array - * parameters or 1 placeholder per array element. - * - * @return string the query string with LIMIT clauses added - * - * @access protected - */ - function modifyLimitQuery($query, $from, $count, $params = array()) - { - return "$query LIMIT $count OFFSET $from"; - } - - // }}} - // {{{ pgsqlRaiseError() - - /** - * Produces a DB_Error object regarding the current problem - * - * @param int $errno if the error is being manually raised pass a - * DB_ERROR* constant here. If this isn't passed - * the error information gathered from the DBMS. - * - * @return object the DB_Error object - * - * @see DB_common::raiseError(), - * DB_pgsql::errorNative(), DB_pgsql::errorCode() - */ - function pgsqlRaiseError($errno = null) - { - $native = $this->errorNative(); - if (!$native) { - $native = 'Database connection has been lost.'; - $errno = DB_ERROR_CONNECT_FAILED; - } - if ($errno === null) { - $errno = $this->errorCode($native); - } - return $this->raiseError($errno, null, null, null, $native); - } - - // }}} - // {{{ errorNative() - - /** - * Gets the DBMS' native error message produced by the last query - * - * {@internal Error messages are used instead of error codes - * in order to support older versions of PostgreSQL.}} - * - * @return string the DBMS' error message - */ - function errorNative() - { - return @pg_errormessage($this->connection); - } - - // }}} - // {{{ errorCode() - - /** - * Determines PEAR::DB error code from the database's text error message. - * - * @param string $errormsg error message returned from the database - * @return integer an error number from a DB error constant - */ - function errorCode($errormsg) - { - static $error_regexps; - if (!isset($error_regexps)) { - $error_regexps = array( - '/column .* (of relation .*)?does not exist/i' - => DB_ERROR_NOSUCHFIELD, - '/(relation|sequence|table).*does not exist|class .* not found/i' - => DB_ERROR_NOSUCHTABLE, - '/index .* does not exist/' - => DB_ERROR_NOT_FOUND, - '/relation .* already exists/i' - => DB_ERROR_ALREADY_EXISTS, - '/(divide|division) by zero$/i' - => DB_ERROR_DIVZERO, - '/pg_atoi: error in .*: can\'t parse /i' - => DB_ERROR_INVALID_NUMBER, - '/invalid input syntax for( type)? (integer|numeric)/i' - => DB_ERROR_INVALID_NUMBER, - '/value .* is out of range for type \w*int/i' - => DB_ERROR_INVALID_NUMBER, - '/integer out of range/i' - => DB_ERROR_INVALID_NUMBER, - '/value too long for type character/i' - => DB_ERROR_INVALID, - '/attribute .* not found|relation .* does not have attribute/i' - => DB_ERROR_NOSUCHFIELD, - '/column .* specified in USING clause does not exist in (left|right) table/i' - => DB_ERROR_NOSUCHFIELD, - '/parser: parse error at or near/i' - => DB_ERROR_SYNTAX, - '/syntax error at/' - => DB_ERROR_SYNTAX, - '/column reference .* is ambiguous/i' - => DB_ERROR_SYNTAX, - '/permission denied/' - => DB_ERROR_ACCESS_VIOLATION, - '/violates not-null constraint/' - => DB_ERROR_CONSTRAINT_NOT_NULL, - '/violates [\w ]+ constraint/' - => DB_ERROR_CONSTRAINT, - '/referential integrity violation/' - => DB_ERROR_CONSTRAINT, - '/more expressions than target columns/i' - => DB_ERROR_VALUE_COUNT_ON_ROW, - ); - } - foreach ($error_regexps as $regexp => $code) { - if (preg_match($regexp, $errormsg)) { - return $code; - } - } - // Fall back to DB_ERROR if there was no mapping. - return DB_ERROR; - } - - // }}} - // {{{ tableInfo() - - /** - * Returns information about a table or a result set - * - * NOTE: only supports 'table' and 'flags' if <var>$result</var> - * is a table name. - * - * @param object|string $result DB_result object from a query or a - * string containing the name of a table. - * While this also accepts a query result - * resource identifier, this behavior is - * deprecated. - * @param int $mode a valid tableInfo mode - * - * @return array an associative array with the information requested. - * A DB_Error object on failure. - * - * @see DB_common::tableInfo() - */ - function tableInfo($result, $mode = null) - { - if (is_string($result)) { - /* - * Probably received a table name. - * Create a result resource identifier. - */ - $id = @pg_exec($this->connection, "SELECT * FROM $result LIMIT 0"); - $got_string = true; - } elseif (isset($result->result)) { - /* - * Probably received a result object. - * Extract the result resource identifier. - */ - $id = $result->result; - $got_string = false; - } else { - /* - * Probably received a result resource identifier. - * Copy it. - * Deprecated. Here for compatibility only. - */ - $id = $result; - $got_string = false; - } - - if (!is_resource($id)) { - return $this->pgsqlRaiseError(DB_ERROR_NEED_MORE_DATA); - } - - if ($this->options['portability'] & DB_PORTABILITY_LOWERCASE) { - $case_func = 'strtolower'; - } else { - $case_func = 'strval'; - } - - $count = @pg_numfields($id); - $res = array(); - - if ($mode) { - $res['num_fields'] = $count; - } - - for ($i = 0; $i < $count; $i++) { - $res[$i] = array( - 'table' => $got_string ? $case_func($result) : '', - 'name' => $case_func(@pg_fieldname($id, $i)), - 'type' => @pg_fieldtype($id, $i), - 'len' => @pg_fieldsize($id, $i), - 'flags' => $got_string - ? $this->_pgFieldFlags($id, $i, $result) - : '', - ); - if ($mode & DB_TABLEINFO_ORDER) { - $res['order'][$res[$i]['name']] = $i; - } - if ($mode & DB_TABLEINFO_ORDERTABLE) { - $res['ordertable'][$res[$i]['table']][$res[$i]['name']] = $i; - } - } - - // free the result only if we were called on a table - if ($got_string) { - @pg_freeresult($id); - } - return $res; - } - - // }}} - // {{{ _pgFieldFlags() - - /** - * Get a column's flags - * - * Supports "not_null", "default_value", "primary_key", "unique_key" - * and "multiple_key". The default value is passed through - * rawurlencode() in case there are spaces in it. - * - * @param int $resource the PostgreSQL result identifier - * @param int $num_field the field number - * - * @return string the flags - * - * @access private - */ - function _pgFieldFlags($resource, $num_field, $table_name) - { - $field_name = @pg_fieldname($resource, $num_field); - - // Check if there's a schema in $table_name and update things - // accordingly. - $from = 'pg_attribute f, pg_class tab, pg_type typ'; - if (strpos($table_name, '.') !== false) { - $from .= ', pg_namespace nsp'; - list($schema, $table) = explode('.', $table_name); - $tableWhere = "tab.relname = '$table' AND tab.relnamespace = nsp.oid AND nsp.nspname = '$schema'"; - } else { - $tableWhere = "tab.relname = '$table_name'"; - } - - $result = @pg_exec($this->connection, "SELECT f.attnotnull, f.atthasdef - FROM $from - WHERE tab.relname = typ.typname - AND typ.typrelid = f.attrelid - AND f.attname = '$field_name' - AND $tableWhere"); - if (@pg_numrows($result) > 0) { - $row = @pg_fetch_row($result, 0); - $flags = ($row[0] == 't') ? 'not_null ' : ''; - - if ($row[1] == 't') { - $result = @pg_exec($this->connection, "SELECT a.adsrc - FROM $from, pg_attrdef a - WHERE tab.relname = typ.typname AND typ.typrelid = f.attrelid - AND f.attrelid = a.adrelid AND f.attname = '$field_name' - AND $tableWhere AND f.attnum = a.adnum"); - $row = @pg_fetch_row($result, 0); - $num = preg_replace("/'(.*)'::\w+/", "\\1", $row[0]); - $flags .= 'default_' . rawurlencode($num) . ' '; - } - } else { - $flags = ''; - } - $result = @pg_exec($this->connection, "SELECT i.indisunique, i.indisprimary, i.indkey - FROM $from, pg_index i - WHERE tab.relname = typ.typname - AND typ.typrelid = f.attrelid - AND f.attrelid = i.indrelid - AND f.attname = '$field_name' - AND $tableWhere"); - $count = @pg_numrows($result); - - for ($i = 0; $i < $count ; $i++) { - $row = @pg_fetch_row($result, $i); - $keys = explode(' ', $row[2]); - - if (in_array($num_field + 1, $keys)) { - $flags .= ($row[0] == 't' && $row[1] == 'f') ? 'unique_key ' : ''; - $flags .= ($row[1] == 't') ? 'primary_key ' : ''; - if (count($keys) > 1) - $flags .= 'multiple_key '; - } - } - - return trim($flags); - } - - // }}} - // {{{ getSpecialQuery() - - /** - * Obtains the query string needed for listing a given type of objects - * - * @param string $type the kind of objects you want to retrieve - * - * @return string the SQL query string or null if the driver doesn't - * support the object type requested - * - * @access protected - * @see DB_common::getListOf() - */ - function getSpecialQuery($type) - { - switch ($type) { - case 'tables': - return 'SELECT c.relname AS "Name"' - . ' FROM pg_class c, pg_user u' - . ' WHERE c.relowner = u.usesysid' - . " AND c.relkind = 'r'" - . ' AND NOT EXISTS' - . ' (SELECT 1 FROM pg_views' - . ' WHERE viewname = c.relname)' - . " AND c.relname !~ '^(pg_|sql_)'" - . ' UNION' - . ' SELECT c.relname AS "Name"' - . ' FROM pg_class c' - . " WHERE c.relkind = 'r'" - . ' AND NOT EXISTS' - . ' (SELECT 1 FROM pg_views' - . ' WHERE viewname = c.relname)' - . ' AND NOT EXISTS' - . ' (SELECT 1 FROM pg_user' - . ' WHERE usesysid = c.relowner)' - . " AND c.relname !~ '^pg_'"; - case 'schema.tables': - return "SELECT schemaname || '.' || tablename" - . ' AS "Name"' - . ' FROM pg_catalog.pg_tables' - . ' WHERE schemaname NOT IN' - . " ('pg_catalog', 'information_schema', 'pg_toast')"; - case 'schema.views': - return "SELECT schemaname || '.' || viewname from pg_views WHERE schemaname" - . " NOT IN ('information_schema', 'pg_catalog')"; - case 'views': - // Table cols: viewname | viewowner | definition - return 'SELECT viewname from pg_views WHERE schemaname' - . " NOT IN ('information_schema', 'pg_catalog')"; - case 'users': - // cols: usename |usesysid|usecreatedb|usetrace|usesuper|usecatupd|passwd |valuntil - return 'SELECT usename FROM pg_user'; - case 'databases': - return 'SELECT datname FROM pg_database'; - case 'functions': - case 'procedures': - return 'SELECT proname FROM pg_proc WHERE proowner <> 1'; - default: - return null; - } - } - - // }}} - -} - -/* - * Local variables: - * tab-width: 4 - * c-basic-offset: 4 - * End: - */ - -?> |