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documentation update and added $not_null parameter to quote() to control if php null's are written as SQL NULL or not. Is used by column_data_implode to only write NULL in columns which allow to do so

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Ralf Becker 2004-08-08 22:31:41 +00:00
parent 12ae81624b
commit ef53586f0f
1 changed files with 59 additions and 48 deletions
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107
phpgwapi/inc/class.db.inc.php
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@ -432,7 +432,7 @@
* Move to position in result set
*
* @param int $pos required row (optional), default first row
* @return int 1 if sucessful or 0 if not found
* @return boolean true if sucessful or false if not found
*/
function seek($pos = 0)
{
@ -449,7 +449,7 @@
/**
* Begin Transaction
*
* @return int current transaction id
* @return int/boolean current transaction-id, of false if no connection
*/
function transaction_begin()
{
@ -884,7 +884,7 @@
*
* Example: $db->concat($db->quote('Hallo '),'username') would return
* for mysql "concat('Hallo ',username)" or "'Hallo ' || username" for postgres
* @param $str1 string already quoted stringliteral or column-name, variable number of arguments
* @param string $str1 already quoted stringliteral or column-name, variable number of arguments
* @return string to be used in a query
*/
function concat($str1)
@ -938,17 +938,17 @@
*
* Please note that the quote function already returns necessary quotes: quote('Hello') === "'Hello'".
* Int and Auto types are casted to int: quote('1','int') === 1, quote('','int') === 0, quote('Hello','int') === 0
* Unset php-variables and those set to NULL are now returned as SQL NULL! If this is not desired, set them to ''.
*
* @param $value mixed the value to be escaped
* @param $type string the type of the db-column, default False === varchar
* @param mixed $value the value to be escaped
* @param string/boolean $type string the type of the db-column, default False === varchar
* @param boolean $not_null is column NOT NULL, default true, else php null values are written as SQL NULL
* @return string escaped sting
*/
function quote($value,$type=False)
function quote($value,$type=False,$not_null=true)
{
if ($this->Debug) echo "<p>db::quote('$value','$type')</p>\n";
if (is_null($value)) // writing unset php-variables and thouse set to NULL now as SQL NULL
if (!$not_null && is_null($value)) // writing unset php-variables and thouse set to NULL now as SQL NULL
{
return 'NULL';
}
@ -984,20 +984,21 @@
*
* @author RalfBecker<at>outdoor-training.de
*
* @param $glue string in most cases this will be either ',' or ' AND ', depending you your query
* @param $array array column-name / value pairs, if the value is an array all its array-values will be quoted
* @param string $glue in most cases this will be either ',' or ' AND ', depending you your query
* @param array $array column-name / value pairs, if the value is an array all its array-values will be quoted
* according to the type of the column, and the whole array with be formatted like (val1,val2,...)
* If $use_key == True, an ' IN ' instead a '=' is used. Good for category- or user-lists.
* If the key is numerical (no key given in the array-definition) the value is used as is, eg.
* array('visits=visits+1') gives just "visits=visits+1" (no quoting at all !!!)
* @param $use_key boolean/string If $use_key===True a "$key=" prefix each value (default), typically set to False
* @param boolean/string $use_key If $use_key===True a "$key=" prefix each value (default), typically set to False
* or 'VALUES' for insert querys, on 'VALUES' "(key1,key2,...) VALUES (val1,val2,...)" is returned
* @param $only array/boolean if set to an array only colums which are set (as data !!!) are written
* @param array/boolean $only if set to an array only colums which are set (as data !!!) are written
* typicaly used to form a WHERE-clause from the primary keys.
* If set to True, only columns from the colum_definitons are written.
* @param $column_definitions array/boolean this can be set to the column-definitions-array
* @param array/boolean $column_definitions this can be set to the column-definitions-array
* of your table ($tables_baseline[$table]['fd'] of the setup/tables_current.inc.php file).
* If its set, the column-type-data determinates if (int) or addslashes is used.
* @return string SQL
*/
function column_data_implode($glue,$array,$use_key=True,$only=False,$column_definitions=False)
{
@ -1024,12 +1025,13 @@
$this->halt("db::column_data_implode('$glue',".print_r($array,True).",'$use_key',".print_r($only,True).",<pre>".print_r($column_definitions,True)."</pre><b>nothing known about column '$key'!</b>");
}
$column_type = is_array($column_definitions) ? @$column_definitions[$key]['type'] : False;
$not_null = is_array($column_definitions) && isset($column_definitions[$key]['nullable']) ? !$column_definitions[$key]['nullable'] : True;
if (is_array($data))
{
foreach($data as $k => $v)
{
$data[$k] = $this->quote($v,$column_type);
$data[$k] = $this->quote($v,$column_type,$not_null);
}
$values[] = ($use_key===True ? $key.' IN ' : '') . '('.implode(',',$data).')';
}
@ -1039,7 +1041,7 @@
}
else
{
$values[] = ($use_key===True ? $this->name_quote($key) . '=' : '') . $this->quote($data,$column_type);
$values[] = ($use_key===True ? $this->name_quote($key) . '=' : '') . $this->quote($data,$column_type,$not_null);
}
}
}
@ -1052,7 +1054,7 @@
*
* @author RalfBecker<at>outdoor-training.de
*
* @param $column_definitions array/boolean this can be set to the column-definitions-array
* @param array/boolean $column_definitions this can be set to the column-definitions-array
* of your table ($tables_baseline[$table]['fd'] of the setup/tables_current.inc.php file).
* If its set, the column-type-data determinates if (int) or addslashes is used.
*/
@ -1061,6 +1063,14 @@
$this->column_definitions=$column_definitions;
}
/**
* Sets the application in which the db-class looks for table-defintions
*
* Used by table_definitions, insert, update, select, expression and delete. If the app is not set via set_app,
* it need to be set for these functions on every call
*
* @param string $app the app-name
*/
function set_app($app)
{
$this->app = $app;
@ -1073,8 +1083,8 @@
*
* @author RalfBecker<at>outdoor-training.de
*
* @param $app bool/string name of the app or default False to use the app set by db::set_app or the current app
* @param $table bool/string if set return only defintions of that table, else return all defintions
* @param bool/string $app name of the app or default False to use the app set by db::set_app or the current app
* @param bool/string $table if set return only defintions of that table, else return all defintions
* @return mixed array with table-defintions or False if file not found
*/
function get_table_definitions($app=False,$table=False)
@ -1110,14 +1120,14 @@
*
* @author RalfBecker<at>outdoor-training.de
*
* @param $table string name of the table
* @param $data array with column-name / value pairs
* @param $where mixed array with column-name / values pairs to check if a row with that keys already exists,
* @param string $table name of the table
* @param array $data with column-name / value pairs
* @param mixed $where string with where clause or array with column-name / values pairs to check if a row with that keys already exists, or false for an unconditional insert
* if the row exists db::update is called else a new row with $date merged with $where gets inserted (data has precedence)
* @param $line int line-number to pass to query
* @param $file string file-name to pass to query
* @param $app mixed string with name of app or False to use the current-app
* @return object/boolean Query_ID of the call to db::query, or True if we had to do an update
* @param int $line line-number to pass to query
* @param string $file file-name to pass to query
* @param string/boolean $app string with name of app or False to use the current-app
* @return ADORecordSet or false, if the query fails
*/
function insert($table,$data,$where,$line,$file,$app=False)
{
@ -1153,13 +1163,13 @@
*
* @author RalfBecker<at>outdoor-training.de
*
* @param $table string name of the table
* @param $data array with column-name / value pairs
* @param $where array column-name / values pairs and'ed together for the where clause
* @param $line int line-number to pass to query
* @param $file string file-name to pass to query
* @param $app mixed string with name of app or False to use the current-app
* @return the return-value of the call to db::query
* @param string $table name of the table
* @param array $data with column-name / value pairs
* @param array $where column-name / values pairs and'ed together for the where clause
* @param int $line line-number to pass to query
* @param string $file file-name to pass to query
* @param string/boolean $app string with name of app or False to use the current-app
* @return ADORecordSet or false, if the query fails
*/
function update($table,$data,$where,$line,$file,$app=False)
{
@ -1198,12 +1208,12 @@
*
* @author RalfBecker<at>outdoor-training.de
*
* @param $table string name of the table
* @param $where array column-name / values pairs and'ed together for the where clause
* @param $line int line-number to pass to query
* @param $file string file-name to pass to query
* @param $app mixed string with name of app or False to use the current-app
* @return the return-value of the call to db::query
* @param string $table name of the table
* @param array $where column-name / values pairs and'ed together for the where clause
* @param int $line line-number to pass to query
* @param string $file file-name to pass to query
* @param string/boolean $app string with name of app or False to use the current-app
* @return ADORecordSet or false, if the query fails
*/
function delete($table,$where,$line,$file,$app=False)
{
@ -1266,17 +1276,18 @@
*
* @author RalfBecker<at>outdoor-training.de
*
* @param $table string name of the table
* @param $cols mixed string or array of column-names / select-expressions
* @param $where array/string string or array with column-name / values pairs AND'ed together for the where clause
* @param $line int line-number to pass to query
* @param $file string file-name to pass to query
* @param $offset int/bool offset for a limited query or False (default)
* @param string $table name of the table
* @param array/string $cols string or array of column-names / select-expressions
* @param array/string $where string or array with column-name / values pairs AND'ed together for the where clause
* @param int $line line-number to pass to query
* @param string $file file-name to pass to query
* @param int/bool $offset offset for a limited query or False (default)
* @param string $append string to append to the end of the query, eg. ORDER BY ...
* @param $app mixed string with name of app or False to use the current-app
* @return the return-value of the call to db::query
* @param string/boolean $app string with name of app or False to use the current-app
* @param int $num_rows number of rows to return if offset set, default 0 = use default in user prefs
* @return ADORecordSet or false, if the query fails
*/
function select($table,$cols,$where,$line,$file,$offset=False,$append='',$app=False)
function select($table,$cols,$where,$line,$file,$offset=False,$append='',$app=False,$num_rows=0)
{
if ($this->Debug) echo "<p>db::select('$table',".print_r($cols,True).",".print_r($where,True).",$line,$file,$offset,'$app')</p>\n";
@ -1294,6 +1305,6 @@
if ($this->Debug) echo "<p>sql='$sql'</p>";
return $this->query($sql,$line,$file,$offset,$offset===False ? -1 : 0);
return $this->query($sql,$line,$file,$offset,$offset===False ? -1 : (int)$num_rows);
}
}