New file |
0,0 → 1,1082 |
<?php |
|
/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */ |
|
/** |
* The PEAR DB driver for PHP's interbase extension |
* for interacting with Interbase and Firebird databases |
* |
* While this class works with PHP 4, PHP's InterBase extension is |
* unstable in PHP 4. Use PHP 5. |
* |
* 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 Sterling Hughes <sterling@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: ibase.php,v 1.1 2008/07/07 18:00:39 mrflos Exp $ |
* @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 interbase extension |
* for interacting with Interbase and Firebird databases |
* |
* These methods overload the ones declared in DB_common. |
* |
* While this class works with PHP 4, PHP's InterBase extension is |
* unstable in PHP 4. Use PHP 5. |
* |
* NOTICE: limitQuery() only works for Firebird. |
* |
* @category Database |
* @package DB |
* @author Sterling Hughes <sterling@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: 1.7.14RC1 |
* @link http://pear.php.net/package/DB |
* @since Class became stable in Release 1.7.0 |
*/ |
class DB_ibase extends DB_common |
{ |
// {{{ properties |
|
/** |
* The DB driver type (mysql, oci8, odbc, etc.) |
* @var string |
*/ |
var $phptype = 'ibase'; |
|
/** |
* The database syntax variant to be used (db2, access, etc.), if any |
* @var string |
*/ |
var $dbsyntax = 'ibase'; |
|
/** |
* 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 |
* |
* NOTE: only firebird supports limit. |
* |
* @var array |
*/ |
var $features = array( |
'limit' => false, |
'new_link' => false, |
'numrows' => 'emulate', |
'pconnect' => true, |
'prepare' => true, |
'ssl' => false, |
'transactions' => true, |
); |
|
/** |
* A mapping of native error codes to DB error codes |
* @var array |
*/ |
var $errorcode_map = array( |
-104 => DB_ERROR_SYNTAX, |
-150 => DB_ERROR_ACCESS_VIOLATION, |
-151 => DB_ERROR_ACCESS_VIOLATION, |
-155 => DB_ERROR_NOSUCHTABLE, |
-157 => DB_ERROR_NOSUCHFIELD, |
-158 => DB_ERROR_VALUE_COUNT_ON_ROW, |
-170 => DB_ERROR_MISMATCH, |
-171 => DB_ERROR_MISMATCH, |
-172 => DB_ERROR_INVALID, |
// -204 => // Covers too many errors, need to use regex on msg |
-205 => DB_ERROR_NOSUCHFIELD, |
-206 => DB_ERROR_NOSUCHFIELD, |
-208 => DB_ERROR_INVALID, |
-219 => DB_ERROR_NOSUCHTABLE, |
-297 => DB_ERROR_CONSTRAINT, |
-303 => DB_ERROR_INVALID, |
-413 => DB_ERROR_INVALID_NUMBER, |
-530 => DB_ERROR_CONSTRAINT, |
-551 => DB_ERROR_ACCESS_VIOLATION, |
-552 => DB_ERROR_ACCESS_VIOLATION, |
// -607 => // Covers too many errors, need to use regex on msg |
-625 => DB_ERROR_CONSTRAINT_NOT_NULL, |
-803 => DB_ERROR_CONSTRAINT, |
-804 => DB_ERROR_VALUE_COUNT_ON_ROW, |
// -902 => // Covers too many errors, need to use regex on msg |
-904 => DB_ERROR_CONNECT_FAILED, |
-922 => DB_ERROR_NOSUCHDB, |
-923 => DB_ERROR_CONNECT_FAILED, |
-924 => DB_ERROR_CONNECT_FAILED |
); |
|
/** |
* The raw database connection created by PHP |
* @var resource |
*/ |
var $connection; |
|
/** |
* The DSN information for connecting to a database |
* @var array |
*/ |
var $dsn = array(); |
|
|
/** |
* The number of rows affected by a data manipulation query |
* @var integer |
* @access private |
*/ |
var $affected = 0; |
|
/** |
* Should data manipulation queries be committed automatically? |
* @var bool |
* @access private |
*/ |
var $autocommit = true; |
|
/** |
* The prepared statement handle from the most recently executed statement |
* |
* {@internal Mainly here because the InterBase/Firebird API is only |
* able to retrieve data from result sets if the statemnt handle is |
* still in scope.}} |
* |
* @var resource |
*/ |
var $last_stmt; |
|
/** |
* Is the given prepared statement a data manipulation query? |
* @var array |
* @access private |
*/ |
var $manip_query = array(); |
|
|
// }}} |
// {{{ constructor |
|
/** |
* This constructor calls <kbd>$this->DB_common()</kbd> |
* |
* @return void |
*/ |
function DB_ibase() |
{ |
$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 ibase driver supports the following extra DSN options: |
* + buffers The number of database buffers to allocate for the |
* server-side cache. |
* + charset The default character set for a database. |
* + dialect The default SQL dialect for any statement |
* executed within a connection. Defaults to the |
* highest one supported by client libraries. |
* Functional only with InterBase 6 and up. |
* + role Functional only with InterBase 5 and up. |
* |
* @param array $dsn the data source name |
* @param bool $persistent should the connection be persistent? |
* |
* @return int DB_OK on success. A DB_Error object on failure. |
*/ |
function connect($dsn, $persistent = false) |
{ |
if (!PEAR::loadExtension('interbase')) { |
return $this->raiseError(DB_ERROR_EXTENSION_NOT_FOUND); |
} |
|
$this->dsn = $dsn; |
if ($dsn['dbsyntax']) { |
$this->dbsyntax = $dsn['dbsyntax']; |
} |
if ($this->dbsyntax == 'firebird') { |
$this->features['limit'] = 'alter'; |
} |
|
$params = array( |
$dsn['hostspec'] |
? ($dsn['hostspec'] . ':' . $dsn['database']) |
: $dsn['database'], |
$dsn['username'] ? $dsn['username'] : null, |
$dsn['password'] ? $dsn['password'] : null, |
isset($dsn['charset']) ? $dsn['charset'] : null, |
isset($dsn['buffers']) ? $dsn['buffers'] : null, |
isset($dsn['dialect']) ? $dsn['dialect'] : null, |
isset($dsn['role']) ? $dsn['role'] : null, |
); |
|
$connect_function = $persistent ? 'ibase_pconnect' : 'ibase_connect'; |
|
$this->connection = @call_user_func_array($connect_function, $params); |
if (!$this->connection) { |
return $this->ibaseRaiseError(DB_ERROR_CONNECT_FAILED); |
} |
return DB_OK; |
} |
|
// }}} |
// {{{ disconnect() |
|
/** |
* Disconnects from the database server |
* |
* @return bool TRUE on success, FALSE on failure |
*/ |
function disconnect() |
{ |
$ret = @ibase_close($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); |
$result = @ibase_query($this->connection, $query); |
|
if (!$result) { |
return $this->ibaseRaiseError(); |
} |
if ($this->autocommit && $ismanip) { |
@ibase_commit($this->connection); |
} |
if ($ismanip) { |
$this->affected = $result; |
return DB_OK; |
} else { |
$this->affected = 0; |
return $result; |
} |
} |
|
// }}} |
// {{{ modifyLimitQuery() |
|
/** |
* Adds LIMIT clauses to a query string according to current DBMS standards |
* |
* Only works with Firebird. |
* |
* @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, $params = array()) |
{ |
if ($this->dsn['dbsyntax'] == 'firebird') { |
$query = preg_replace('/^([\s(])*SELECT/i', |
"SELECT FIRST $count SKIP $from", $query); |
} |
return $query; |
} |
|
// }}} |
// {{{ nextResult() |
|
/** |
* Move the internal ibase result pointer to the next available result |
* |
* @param a valid fbsql result resource |
* |
* @access public |
* |
* @return true if a result is available otherwise return false |
*/ |
function nextResult($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, $rownum = null) |
{ |
if ($rownum !== null) { |
return $this->ibaseRaiseError(DB_ERROR_NOT_CAPABLE); |
} |
if ($fetchmode & DB_FETCHMODE_ASSOC) { |
if (function_exists('ibase_fetch_assoc')) { |
$arr = @ibase_fetch_assoc($result); |
} else { |
$arr = get_object_vars(ibase_fetch_object($result)); |
} |
if ($this->options['portability'] & DB_PORTABILITY_LOWERCASE && $arr) { |
$arr = array_change_key_case($arr, CASE_LOWER); |
} |
} else { |
$arr = @ibase_fetch_row($result); |
} |
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); |
} |
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) |
{ |
return is_resource($result) ? ibase_free_result($result) : false; |
} |
|
// }}} |
// {{{ freeQuery() |
|
function freeQuery($query) |
{ |
return is_resource($query) ? ibase_free_query($query) : false; |
} |
|
// }}} |
// {{{ affectedRows() |
|
/** |
* Determines the number of rows affected by a data maniuplation query |
* |
* 0 is returned for queries that don't manipulate data. |
* |
* @return int the number of rows. A DB_Error object on failure. |
*/ |
function affectedRows() |
{ |
if (is_integer($this->affected)) { |
return $this->affected; |
} |
return $this->ibaseRaiseError(DB_ERROR_NOT_CAPABLE); |
} |
|
// }}} |
// {{{ 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) |
{ |
$cols = @ibase_num_fields($result); |
if (!$cols) { |
return $this->ibaseRaiseError(); |
} |
return $cols; |
} |
|
// }}} |
// {{{ prepare() |
|
/** |
* Prepares a query for multiple execution with execute(). |
* |
* prepare() requires a generic query as string like <code> |
* INSERT INTO numbers VALUES (?, ?, ?) |
* </code>. The <kbd>?</kbd> characters are placeholders. |
* |
* Three types of placeholders can be used: |
* + <kbd>?</kbd> a quoted scalar value, i.e. strings, integers |
* + <kbd>!</kbd> value is inserted 'as is' |
* + <kbd>&</kbd> requires a file name. The file's contents get |
* inserted into the query (i.e. saving binary |
* data in a db) |
* |
* Use backslashes to escape placeholder characters if you don't want |
* them to be interpreted as placeholders. Example: <code> |
* "UPDATE foo SET col=? WHERE col='over \& under'" |
* </code> |
* |
* @param string $query query to be prepared |
* @return mixed DB statement resource on success. DB_Error on failure. |
*/ |
function prepare($query) |
{ |
$tokens = preg_split('/((?<!\\\)[&?!])/', $query, -1, |
PREG_SPLIT_DELIM_CAPTURE); |
$token = 0; |
$types = array(); |
$newquery = ''; |
|
foreach ($tokens as $key => $val) { |
switch ($val) { |
case '?': |
$types[$token++] = DB_PARAM_SCALAR; |
break; |
case '&': |
$types[$token++] = DB_PARAM_OPAQUE; |
break; |
case '!': |
$types[$token++] = DB_PARAM_MISC; |
break; |
default: |
$tokens[$key] = preg_replace('/\\\([&?!])/', "\\1", $val); |
$newquery .= $tokens[$key] . '?'; |
} |
} |
|
$newquery = substr($newquery, 0, -1); |
$this->last_query = $query; |
$newquery = $this->modifyQuery($newquery); |
$stmt = @ibase_prepare($this->connection, $newquery); |
|
if ($stmt === false) { |
$stmt = $this->ibaseRaiseError(); |
} else { |
$this->prepare_types[(int)$stmt] = $types; |
$this->manip_query[(int)$stmt] = DB::isManip($query); |
} |
|
return $stmt; |
} |
|
// }}} |
// {{{ execute() |
|
/** |
* Executes a DB statement prepared with prepare(). |
* |
* @param resource $stmt a DB statement resource returned from prepare() |
* @param mixed $data array, string or numeric data to be used in |
* execution of the statement. Quantity of items |
* passed must match quantity of placeholders in |
* query: meaning 1 for non-array items or the |
* quantity of elements in the array. |
* @return object a new DB_Result or a DB_Error when fail |
* @see DB_ibase::prepare() |
* @access public |
*/ |
function &execute($stmt, $data = array()) |
{ |
$data = (array)$data; |
$this->last_parameters = $data; |
|
$types = $this->prepare_types[(int)$stmt]; |
if (count($types) != count($data)) { |
$tmp = $this->raiseError(DB_ERROR_MISMATCH); |
return $tmp; |
} |
|
$i = 0; |
foreach ($data as $key => $value) { |
if ($types[$i] == DB_PARAM_MISC) { |
/* |
* ibase doesn't seem to have the ability to pass a |
* parameter along unchanged, so strip off quotes from start |
* and end, plus turn two single quotes to one single quote, |
* in order to avoid the quotes getting escaped by |
* ibase and ending up in the database. |
*/ |
$data[$key] = preg_replace("/^'(.*)'$/", "\\1", $data[$key]); |
$data[$key] = str_replace("''", "'", $data[$key]); |
} elseif ($types[$i] == DB_PARAM_OPAQUE) { |
$fp = @fopen($data[$key], 'rb'); |
if (!$fp) { |
$tmp = $this->raiseError(DB_ERROR_ACCESS_VIOLATION); |
return $tmp; |
} |
$data[$key] = fread($fp, filesize($data[$key])); |
fclose($fp); |
} |
$i++; |
} |
|
array_unshift($data, $stmt); |
|
$res = call_user_func_array('ibase_execute', $data); |
if (!$res) { |
$tmp = $this->ibaseRaiseError(); |
return $tmp; |
} |
/* XXX need this? |
if ($this->autocommit && $this->manip_query[(int)$stmt]) { |
@ibase_commit($this->connection); |
}*/ |
$this->last_stmt = $stmt; |
if ($this->manip_query[(int)$stmt] || $this->_next_query_manip) { |
$this->_last_query_manip = true; |
$this->_next_query_manip = false; |
$tmp = DB_OK; |
} else { |
$this->_last_query_manip = false; |
$tmp = new DB_result($this, $res); |
} |
return $tmp; |
} |
|
/** |
* Frees the internal resources associated with a prepared query |
* |
* @param resource $stmt the prepared statement's PHP resource |
* @param bool $free_resource should the PHP resource be freed too? |
* Use false if you need to get data |
* from the result set later. |
* |
* @return bool TRUE on success, FALSE if $result is invalid |
* |
* @see DB_ibase::prepare() |
*/ |
function freePrepared($stmt, $free_resource = true) |
{ |
if (!is_resource($stmt)) { |
return false; |
} |
if ($free_resource) { |
@ibase_free_query($stmt); |
} |
unset($this->prepare_tokens[(int)$stmt]); |
unset($this->prepare_types[(int)$stmt]); |
unset($this->manip_query[(int)$stmt]); |
return true; |
} |
|
// }}} |
// {{{ 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) |
{ |
$this->autocommit = $onoff ? 1 : 0; |
return DB_OK; |
} |
|
// }}} |
// {{{ commit() |
|
/** |
* Commits the current transaction |
* |
* @return int DB_OK on success. A DB_Error object on failure. |
*/ |
function commit() |
{ |
return @ibase_commit($this->connection); |
} |
|
// }}} |
// {{{ rollback() |
|
/** |
* Reverts the current transaction |
* |
* @return int DB_OK on success. A DB_Error object on failure. |
*/ |
function rollback() |
{ |
return @ibase_rollback($this->connection); |
} |
|
// }}} |
// {{{ transactionInit() |
|
function transactionInit($trans_args = 0) |
{ |
return $trans_args |
? @ibase_trans($trans_args, $this->connection) |
: @ibase_trans(); |
} |
|
// }}} |
// {{{ nextId() |
|
/** |
* Returns the next free id in a sequence |
* |
* @param string $seq_name name of the sequence |
* @param boolean $ondemand when true, the seqence is automatically |
* created if it does not exist |
* |
* @return int the next id number in the sequence. |
* A DB_Error object on failure. |
* |
* @see DB_common::nextID(), DB_common::getSequenceName(), |
* DB_ibase::createSequence(), DB_ibase::dropSequence() |
*/ |
function nextId($seq_name, $ondemand = true) |
{ |
$sqn = strtoupper($this->getSequenceName($seq_name)); |
$repeat = 0; |
do { |
$this->pushErrorHandling(PEAR_ERROR_RETURN); |
$result = $this->query("SELECT GEN_ID(${sqn}, 1) " |
. 'FROM RDB$GENERATORS ' |
. "WHERE RDB\$GENERATOR_NAME='${sqn}'"); |
$this->popErrorHandling(); |
if ($ondemand && DB::isError($result)) { |
$repeat = 1; |
$result = $this->createSequence($seq_name); |
if (DB::isError($result)) { |
return $result; |
} |
} else { |
$repeat = 0; |
} |
} while ($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 $seq_name name of the new sequence |
* |
* @return int DB_OK on success. A DB_Error object on failure. |
* |
* @see DB_common::createSequence(), DB_common::getSequenceName(), |
* DB_ibase::nextID(), DB_ibase::dropSequence() |
*/ |
function createSequence($seq_name) |
{ |
$sqn = strtoupper($this->getSequenceName($seq_name)); |
$this->pushErrorHandling(PEAR_ERROR_RETURN); |
$result = $this->query("CREATE GENERATOR ${sqn}"); |
$this->popErrorHandling(); |
|
return $result; |
} |
|
// }}} |
// {{{ dropSequence() |
|
/** |
* Deletes a sequence |
* |
* @param string $seq_name name of the sequence to be deleted |
* |
* @return int DB_OK on success. A DB_Error object on failure. |
* |
* @see DB_common::dropSequence(), DB_common::getSequenceName(), |
* DB_ibase::nextID(), DB_ibase::createSequence() |
*/ |
function dropSequence($seq_name) |
{ |
return $this->query('DELETE FROM RDB$GENERATORS ' |
. "WHERE RDB\$GENERATOR_NAME='" |
. strtoupper($this->getSequenceName($seq_name)) |
. "'"); |
} |
|
// }}} |
// {{{ _ibaseFieldFlags() |
|
/** |
* Get the column's flags |
* |
* Supports "primary_key", "unique_key", "not_null", "default", |
* "computed" and "blob". |
* |
* @param string $field_name the name of the field |
* @param string $table_name the name of the table |
* |
* @return string the flags |
* |
* @access private |
*/ |
function _ibaseFieldFlags($field_name, $table_name) |
{ |
$sql = 'SELECT R.RDB$CONSTRAINT_TYPE CTYPE' |
.' FROM RDB$INDEX_SEGMENTS I' |
.' JOIN RDB$RELATION_CONSTRAINTS R ON I.RDB$INDEX_NAME=R.RDB$INDEX_NAME' |
.' WHERE I.RDB$FIELD_NAME=\'' . $field_name . '\'' |
.' AND UPPER(R.RDB$RELATION_NAME)=\'' . strtoupper($table_name) . '\''; |
|
$result = @ibase_query($this->connection, $sql); |
if (!$result) { |
return $this->ibaseRaiseError(); |
} |
|
$flags = ''; |
if ($obj = @ibase_fetch_object($result)) { |
@ibase_free_result($result); |
if (isset($obj->CTYPE) && trim($obj->CTYPE) == 'PRIMARY KEY') { |
$flags .= 'primary_key '; |
} |
if (isset($obj->CTYPE) && trim($obj->CTYPE) == 'UNIQUE') { |
$flags .= 'unique_key '; |
} |
} |
|
$sql = 'SELECT R.RDB$NULL_FLAG AS NFLAG,' |
.' R.RDB$DEFAULT_SOURCE AS DSOURCE,' |
.' F.RDB$FIELD_TYPE AS FTYPE,' |
.' F.RDB$COMPUTED_SOURCE AS CSOURCE' |
.' FROM RDB$RELATION_FIELDS R ' |
.' JOIN RDB$FIELDS F ON R.RDB$FIELD_SOURCE=F.RDB$FIELD_NAME' |
.' WHERE UPPER(R.RDB$RELATION_NAME)=\'' . strtoupper($table_name) . '\'' |
.' AND R.RDB$FIELD_NAME=\'' . $field_name . '\''; |
|
$result = @ibase_query($this->connection, $sql); |
if (!$result) { |
return $this->ibaseRaiseError(); |
} |
if ($obj = @ibase_fetch_object($result)) { |
@ibase_free_result($result); |
if (isset($obj->NFLAG)) { |
$flags .= 'not_null '; |
} |
if (isset($obj->DSOURCE)) { |
$flags .= 'default '; |
} |
if (isset($obj->CSOURCE)) { |
$flags .= 'computed '; |
} |
if (isset($obj->FTYPE) && $obj->FTYPE == 261) { |
$flags .= 'blob '; |
} |
} |
|
return trim($flags); |
} |
|
// }}} |
// {{{ ibaseRaiseError() |
|
/** |
* Produces a DB_Error object regarding the current problem |
* |
* @param int $errno if the error is being manually raised pass a |
* DB_ERROR* constant here. If this isn't passed |
* the error information gathered from the DBMS. |
* |
* @return object the DB_Error object |
* |
* @see DB_common::raiseError(), |
* DB_ibase::errorNative(), DB_ibase::errorCode() |
*/ |
function &ibaseRaiseError($errno = null) |
{ |
if ($errno === null) { |
$errno = $this->errorCode($this->errorNative()); |
} |
$tmp = $this->raiseError($errno, null, null, null, @ibase_errmsg()); |
return $tmp; |
} |
|
// }}} |
// {{{ errorNative() |
|
/** |
* Gets the DBMS' native error code produced by the last query |
* |
* @return int the DBMS' error code. NULL if there is no error code. |
* |
* @since Method available since Release 1.7.0 |
*/ |
function errorNative() |
{ |
if (function_exists('ibase_errcode')) { |
return @ibase_errcode(); |
} |
if (preg_match('/^Dynamic SQL Error SQL error code = ([0-9-]+)/i', |
@ibase_errmsg(), $m)) { |
return (int)$m[1]; |
} |
return null; |
} |
|
// }}} |
// {{{ errorCode() |
|
/** |
* Maps native error codes to DB's portable ones |
* |
* @param int $nativecode the error code returned by the DBMS |
* |
* @return int the portable DB error code. Return DB_ERROR if the |
* current driver doesn't have a mapping for the |
* $nativecode submitted. |
* |
* @since Method available since Release 1.7.0 |
*/ |
function errorCode($nativecode = null) |
{ |
if (isset($this->errorcode_map[$nativecode])) { |
return $this->errorcode_map[$nativecode]; |
} |
|
static $error_regexps; |
if (!isset($error_regexps)) { |
$error_regexps = array( |
'/generator .* is not defined/' |
=> DB_ERROR_SYNTAX, // for compat. w ibase_errcode() |
'/table.*(not exist|not found|unknown)/i' |
=> DB_ERROR_NOSUCHTABLE, |
'/table .* already exists/i' |
=> DB_ERROR_ALREADY_EXISTS, |
'/unsuccessful metadata update .* failed attempt to store duplicate value/i' |
=> DB_ERROR_ALREADY_EXISTS, |
'/unsuccessful metadata update .* not found/i' |
=> DB_ERROR_NOT_FOUND, |
'/validation error for column .* value "\*\*\* null/i' |
=> DB_ERROR_CONSTRAINT_NOT_NULL, |
'/violation of [\w ]+ constraint/i' |
=> DB_ERROR_CONSTRAINT, |
'/conversion error from string/i' |
=> DB_ERROR_INVALID_NUMBER, |
'/no permission for/i' |
=> DB_ERROR_ACCESS_VIOLATION, |
'/arithmetic exception, numeric overflow, or string truncation/i' |
=> DB_ERROR_INVALID, |
'/feature is not supported/i' |
=> DB_ERROR_NOT_CAPABLE, |
); |
} |
|
$errormsg = @ibase_errmsg(); |
foreach ($error_regexps as $regexp => $code) { |
if (preg_match($regexp, $errormsg)) { |
return $code; |
} |
} |
return DB_ERROR; |
} |
|
// }}} |
// {{{ tableInfo() |
|
/** |
* Returns information about a table or a result set |
* |
* NOTE: only supports 'table' and 'flags' if <var>$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. |
*/ |
$id = @ibase_query($this->connection, |
"SELECT * FROM $result WHERE 1=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 $this->ibaseRaiseError(DB_ERROR_NEED_MORE_DATA); |
} |
|
if ($this->options['portability'] & DB_PORTABILITY_LOWERCASE) { |
$case_func = 'strtolower'; |
} else { |
$case_func = 'strval'; |
} |
|
$count = @ibase_num_fields($id); |
$res = array(); |
|
if ($mode) { |
$res['num_fields'] = $count; |
} |
|
for ($i = 0; $i < $count; $i++) { |
$info = @ibase_field_info($id, $i); |
$res[$i] = array( |
'table' => $got_string ? $case_func($result) : '', |
'name' => $case_func($info['name']), |
'type' => $info['type'], |
'len' => $info['length'], |
'flags' => ($got_string) |
? $this->_ibaseFieldFlags($info['name'], $result) |
: '', |
); |
if ($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) { |
@ibase_free_result($id); |
} |
return $res; |
} |
|
// }}} |
// {{{ 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 ($type) { |
case 'tables': |
return 'SELECT DISTINCT R.RDB$RELATION_NAME FROM ' |
. 'RDB$RELATION_FIELDS R WHERE R.RDB$SYSTEM_FLAG=0'; |
case 'views': |
return 'SELECT DISTINCT RDB$VIEW_NAME from RDB$VIEW_RELATIONS'; |
case 'users': |
return 'SELECT DISTINCT RDB$USER FROM RDB$USER_PRIVILEGES'; |
default: |
return null; |
} |
} |
|
// }}} |
|
} |
|
/* |
* Local variables: |
* tab-width: 4 |
* c-basic-offset: 4 |
* End: |
*/ |
|
?> |