dbitem.php
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Created: Fri, Nov 21, 9:13 PM

dbitem.php
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	<?php

	/**
	* DBItem
	*
	* Desciption
	* @package kernel4
	*/
	class kDBItem extends kDBBase {

	/**
	* Description
	*
	* @var array Associative array of current item' field values
	* @access public
	*/
	var $FieldValues;

	/**
	* Unformatted field values, before parse
	*
	* @var Array
	* @access private
	*/
	var $DirtyFieldValues = Array();

	var $FieldErrors;

	var $ErrorMsgs = Array();

	/**
	* If set to true, Update will skip Validation before running
	*
	* @var array Associative array of current item' field values
	* @access public
	*/
	var $IgnoreValidation = false;

	var $Loaded = false;

	/**
	* Holds item' primary key value
	*
	* @var int Value of primary key field for current item
	* @access public
	*/
	var $ID;

	function kDBItem()
	{
	parent::kDBBase();
	$this->ErrorMsgs['required'] = '!la_err_required!'; //'Field is required';
	$this->ErrorMsgs['unique'] = '!la_err_unique!'; //'Field value must be unique';
	$this->ErrorMsgs['value_out_of_range'] = '!la_err_value_out_of_range!'; //'Field is out of range, possible values from %s to %s';
	$this->ErrorMsgs['length_out_of_range'] = '!la_err_length_out_of_range!'; //'Field is out of range';
	$this->ErrorMsgs['bad_type'] = '!la_err_bad_type!'; //'Incorrect data format, please use %s';
	$this->ErrorMsgs['invalid_format'] = '!la_err_invalid_format!'; //'Incorrect data format, please use %s';
	$this->ErrorMsgs['bad_date_format'] = '!la_err_bad_date_format!'; //'Incorrect date format, please use (%s) ex. (%s)';
	$this->ErrorMsgs['primary_lang_required'] = '!la_err_primary_lang_required!';
	}

	function SetDirtyField($field_name, $field_value)
	{
	$this->DirtyFieldValues[$field_name] = $field_value;
	}

	function GetDirtyField($field_name)
	{
	return $this->DirtyFieldValues[$field_name];
	}

	/**
	* Set's default values for all fields
	*
	* @access public
	*/
	function SetDefaultValues()
	{
	parent::SetDefaultValues();
	foreach ($this->Fields as $field => $params) {
	if ( isset($params['default']) ) {
	$this->SetDBField($field, $params['default']);
	}
	else {
	$this->SetDBField($field, NULL);
	}
	}
	}

	/**
	* Sets current item field value
	* (applies formatting)
	*
	* @access public
	* @param string $name Name of the field
	* @param mixed $value Value to set the field to
	* @return void
	*/
	function SetField($name,$value)
	{
	$options = $this->GetFieldOptions($name);
	$parsed = $value;
	if ($value == '') $parsed = NULL;
	if (isset($options['formatter'])) {
	$formatter =& $this->Application->recallObject($options['formatter']);
	// $parsed = $formatter->Parse($value, $options, $err);
	$parsed = $formatter->Parse($value, $name, $this);
	}
	$this->SetDBField($name,$parsed);
	}

	/**
	* Sets current item field value
	* (doesn't apply formatting)
	*
	* @access public
	* @param string $name Name of the field
	* @param mixed $value Value to set the field to
	* @return void
	*/
	function SetDBField($name,$value)
	{
	$this->FieldValues[$name] = $value;
	/*if (isset($this->Fields[$name]['formatter'])) {
	$formatter =& $this->Application->recallObject($this->Fields[$name]['formatter']);
	$formatter->UpdateSubFields($name, $value, $this->Fields[$name], $this);
	}*/
	}

	/**
	* Set's field error, if pseudo passed not found then create it with message text supplied.
	* Don't owerrite existing pseudo translation.
	*
	* @param string $field
	* @param string $pseudo
	* @param string $error_label
	*/
	function SetError($field, $pseudo, $error_label = '')
	{
	$error_field = isset($this->Fields[$field]['error_field']) ? $this->Fields[$field]['error_field'] : $field;
	$this->FieldErrors[$error_field]['pseudo'] = $pseudo;

	$error_msg = $error_label ? $this->Application->Phrase($error_label) : '';
	if ($error_label && !getArrayValue($this->ErrorMsgs, $pseudo))
	{
	$this->ErrorMsgs[$pseudo] = $error_msg;
	}
	}

	/**
	* Return current item' field value by field name
	* (doesn't apply formatter)
	*
	* @access public
	* @param string $name field name to return
	* @return mixed
	*/
	function GetDBField($name)
	{
	return $this->FieldValues[$name];
	}

	function HasField($name)
	{
	return isset($this->FieldValues[$name]);
	}

	function GetFieldValues()
	{
	return $this->FieldValues;
	}

	/**
	* Sets item' fields corresponding to elements in passed $hash values.
	*
	* The function sets current item fields to values passed in $hash, by matching $hash keys with field names
	* of current item. If current item' fields are unknown {@link kDBItem::PrepareFields()} is called before acutally setting the fields
	*
	* @access public
	* @param Array $hash
	* @param Array $set_fields Optional param, field names in target object to set, other fields will be skipped
	* @return void
	*/
	function SetFieldsFromHash($hash, $set_fields=null)
	{
	// used in formatter which work with multiple fields together
	foreach($hash as $field_name => $field_value)
	{
	if( eregi("^[0-9]+$", $field_name) \|\| !array_key_exists($field_name,$this->Fields) ) continue;
	if ( is_array($set_fields) && !in_array($field_name, $set_fields) ) continue;
	$this->SetDirtyField($field_name, $field_value);
	}

	// formats all fields using associated formatters
	foreach ($hash as $field_name => $field_value)
	{
	if( eregi("^[0-9]+$", $field_name) \|\| !array_key_exists($field_name,$this->Fields) ) continue;
	if ( is_array($set_fields) && !in_array($field_name, $set_fields) ) continue;
	$this->SetField($field_name,$field_value);
	}
	}

	function SetDBFieldsFromHash($hash, $set_fields=null)
	{
	foreach ($hash as $field_name => $field_value)
	{
	if( eregi("^[0-9]+$", $field_name) \|\| !array_key_exists($field_name,$this->Fields) ) continue;
	if ( is_array($set_fields) && !in_array($field_name, $set_fields) ) continue;

	$this->SetDBField($field_name, $field_value);
	}
	}

	/**
	* Returns part of SQL WHERE clause identifing the record, ex. id = 25
	*
	* @access public
	* @param string $method Child class may want to know who called GetKeyClause, Load(), Update(), Delete() send its names as method
	* @param Array $keys_hash alternative, then item id, keys hash to load item by
	* @return void
	* @see kDBItem::Load()
	* @see kDBItem::Update()
	* @see kDBItem::Delete()
	*/
	function GetKeyClause($method=null, $keys_hash = null)
	{
	if( !isset($keys_hash) ) $keys_hash = Array($this->IDField => $this->ID);

	$ret = '';
	foreach($keys_hash as $field => $value)
	{
	if (!preg_match('/\./', $field)) {
	$ret .= '(`'.$this->TableName.'`.'.$field.' = '.$this->Conn->qstr($value).') AND ';
	}
	else {
	$ret .= '('.$field.' = '.$this->Conn->qstr($value).') AND ';
	}
	}

	return preg_replace('/(.*) AND $/', '\\1', $ret);
	}

	/**
	* Loads item from the database by given id
	*
	* @access public
	* @param mixed $id item id of keys->values hash to load item by
	* @param string $id_field_name Optional parameter to load item by given Id field
	* @return bool True if item has been loaded, false otherwise
	*/
	function Load($id, $id_field_name = null)
	{
	if ( isset($id_field_name) ) $this->SetIDField( $id_field_name );
	$keys_sql = '';
	if( is_array($id) )
	{
	$keys_sql = $this->GetKeyClause('load', $id);
	}
	else
	{
	$this->setID($id);
	$keys_sql = $this->GetKeyClause('load');
	}
	if ( isset($id_field_name) ) $this->setIDField( $this->Application->getUnitOption($this->Prefix, 'IDField') );


	if( ($id === false) \|\| !$keys_sql ) return $this->Clear();

	if( !$this->raiseEvent('OnBeforeItemLoad', $id) ) return false;

	$q = $this->GetSelectSQL().' WHERE '.$keys_sql;

	$field_values = $this->Conn->GetRow($q);
	if($field_values)
	{
	$this->FieldValues = array_merge_recursive2($this->FieldValues, $field_values);
	}
	else
	{
	return $this->Clear();
	}

	if( is_array($id) \|\| isset($id_field_name) ) $this->setID( $this->FieldValues[$this->IDField] );

	$this->UpdateFormattersSubFields(); // used for updating separate virtual date/time fields from DB timestamp (for example)

	$this->raiseEvent('OnAfterItemLoad', $this->GetID() );
	$this->Loaded = true;
	return true;
	}

	/**
	* Builds select sql, SELECT ... FROM parts only
	*
	* @access public
	* @return string
	*/
	function GetSelectSQL()
	{
	$sql = $this->addCalculatedFields($this->SelectClause);
	return parent::GetSelectSQL($sql);
	}

	function UpdateFormattersMasterFields()
	{
	foreach ($this->Fields as $field => $options) {
	if (isset($options['formatter'])) {
	$formatter =& $this->Application->recallObject($options['formatter']);
	$formatter->UpdateMasterFields($field, $this->GetDBField($field), $options, $this);
	}
	}
	}

	function SkipField($field_name, $force_id=false)
	{
	$skip = false;
	$skip = $skip \|\| ( isset($this->VirtualFields[$field_name]) ); //skipping 'virtual' field
	$skip = $skip \|\| ( !getArrayValue($this->FieldValues, $field_name) && getArrayValue($this->Fields[$field_name], 'skip_empty') ); //skipping 'virtual' field
	// $skip = $skip \|\| ($field_name == $this->IDField && !$force_id); //skipping Primary Key

	// $table_name = preg_replace("/^(.*)\./", "$1", $field_name);
	// $skip = $skip \|\| ($table_name && ($table_name != $this->TableName)); //skipping field from other tables

	$skip = $skip \|\| ( !isset($this->Fields[$field_name]) ); //skipping field not in Fields (nor virtual, nor real)

	return $skip;
	}

	/**
	* Updates previously loaded record with current item' values
	*
	* @access public
	* @param int Primery Key Id to update
	* @return bool
	*/
	function Update($id=null, $system_update=false)
	{
	if( isset($id) ) $this->setID($id);

	if( !$this->raiseEvent('OnBeforeItemUpdate') ) return false;

	if( !isset($this->ID) ) return false;

	// Validate before updating
	if( !$this->IgnoreValidation && !$this->Validate() ) return false;
	if( !$this->raiseEvent('OnAfterItemValidate') ) return false;

	//Nothing to update
	if(!$this->FieldValues) return true;

	$sql = sprintf('UPDATE %s SET ',$this->TableName);
	foreach ($this->FieldValues as $field_name => $field_value)
	{
	if ($this->SkipField($field_name)) continue;

	$real_field_name = eregi_replace("^.*\.", '',$field_name); //removing table names from field names

	//Adding part of SET clause for current field, escaping data with ADODB' qstr
	if (is_null( $this->FieldValues[$field_name] )) {
	if (isset($this->Fields[$field_name]['not_null']) && $this->Fields[$field_name]['not_null']) {
	$sql .= '`'.$real_field_name.'` = '.$this->Conn->qstr($this->Fields[$field_name]['default']).', ';
	}
	else {
	$sql .= '`'.$real_field_name.'` = NULL, ';
	}
	}
	else {
	$sql.= sprintf('`%s`=%s, ', $real_field_name, $this->Conn->qstr($this->FieldValues[$field_name], 0));
	}
	}
	$sql = ereg_replace(", $", '', $sql); //Removing last comma and space

	$sql.= sprintf(' WHERE %s', $this->GetKeyClause('update')); //Adding WHERE clause with Primary Key

	if( $this->Conn->ChangeQuery($sql) === false ) return false;

	$affected = $this->Conn->getAffectedRows();
	if (!$system_update && $affected == 1){
	$this->setModifiedFlag();
	}

	$this->saveCustomFields();
	$this->raiseEvent('OnAfterItemUpdate');
	return true;
	}

	/**
	* Validate all item fields based on
	* constraints set in each field options
	* in config
	*
	* @return bool
	* @access private
	*/
	function Validate()
	{
	$this->UpdateFormattersMasterFields(); //order is critical - should be called BEFORE checking errors
	$global_res = true;
	foreach ($this->Fields as $field => $params) {
	$res = true;
	$res = $res && $this->ValidateType($field, $params);
	$res = $res && $this->ValidateRange($field, $params);
	$res = $res && $this->ValidateUnique($field, $params);
	$res = $res && $this->ValidateRequired($field, $params);
	$res = $res && $this->CustomValidation($field, $params);

	// If Formatter has set some error messages during values parsing
	$error_field = isset($params['error_field']) ? $params['error_field'] : $field;
	if (isset($this->FieldErrors[$error_field]['pseudo']) && $this->FieldErrors[$error_field] != '') {
	$global_res = false;
	}

	$global_res = $global_res && $res;
	}

	if (!$global_res && $this->Application->isDebugMode() )
	{
	global $debugger;
	$error_msg = "Validation failed in prefix <b>".$this->Prefix."</b>, FieldErrors follow (look at items with 'pseudo' key set)<br>
	You may ignore this notice if submitted data really has a validation error ";
	trigger_error( $error_msg, E_USER_NOTICE);
	$debugger->dumpVars($this->FieldErrors);
	}

	return $global_res;
	}

	/**
	* Check field value by user-defined alghoritm
	*
	* @param string $field field name
	* @param Array $params field options from config
	* @return bool
	*/
	function CustomValidation($field, $params)
	{
	return true;
	}

	/**
	* Check if item has errors
	*
	* @param Array $skip_fields fields to skip during error checking
	* @return bool
	*/
	function HasErrors($skip_fields)
	{
	$global_res = false;

	foreach ($this->Fields as $field => $field_params) {
	// If Formatter has set some error messages during values parsing
	if ( !( in_array($field, $skip_fields) ) &&
	isset($this->FieldErrors[$field]['pseudo']) && $this->FieldErrors[$field] != '') {
	$global_res = true;
	}
	}
	return $global_res;
	}

	/**
	* Check if value in field matches field type specified in config
	*
	* @param string $field field name
	* @param Array $params field options from config
	* @return bool
	*/
	function ValidateType($field, $params)
	{
	$res = true;
	$val = $this->FieldValues[$field];
	$error_field = isset($params['error_field']) ? $params['error_field'] : $field;
	if ( $val != '' &&
	isset($params['type']) &&
	preg_match("#int\|integer\|double\|float\|real\|numeric\|string#", $params['type'])
	) {
	$res = is_numeric($val);
	if($params['type']=='string' \|\| $res)
	{
	$f = 'is_'.$params['type'];
	settype($val, $params['type']);
	$res = $f($val) && ($val==$this->FieldValues[$field]);
	}
	if (!$res)
	{
	$this->FieldErrors[$error_field]['pseudo'] = 'bad_type';
	$this->FieldErrors[$error_field]['params'] = $params['type'];
	}
	}
	return $res;
	}

	/**
	* Check if value is set for required field
	*
	* @param string $field field name
	* @param Array $params field options from config
	* @return bool
	* @access private
	*/
	function ValidateRequired($field, $params)
	{
	$res = true;
	$error_field = isset($params['error_field']) ? $params['error_field'] : $field;
	if ( getArrayValue($params,'required') )
	{
	$res = ( (string) $this->FieldValues[$field] != '');
	}
	$options = $this->GetFieldOptions($field);
	if (!$res && getArrayValue($options, 'formatter') != 'kUploadFormatter') $this->FieldErrors[$error_field]['pseudo'] = 'required';
	return $res;
	}

	/**
	* Validates that current record has unique field combination among other table records
	*
	* @param string $field field name
	* @param Array $params field options from config
	* @return bool
	* @access private
	*/
	function ValidateUnique($field, $params)
	{
	$res = true;
	$error_field = isset($params['error_field']) ? $params['error_field'] : $field;
	$unique_fields = getArrayValue($params,'unique');
	if($unique_fields !== false)
	{
	$where = Array();
	array_push($unique_fields,$field);
	foreach($unique_fields as $unique_field)
	{
	$where[] = '`'.$unique_field.'` = '.$this->Conn->qstr( $this->GetDBField($unique_field) );
	}

	$sql = 'SELECT COUNT(*) FROM %s WHERE ('.implode(') AND (',$where).') AND ('.$this->IDField.' <> '.(int)$this->ID.')';

	$res_temp = $this->Conn->GetOne( str_replace('%s', $this->TableName, $sql) );

	$current_table_only = getArrayValue($params, 'current_table_only'); // check unique record only in current table
	$res_live = $current_table_only ? 0 : $this->Conn->GetOne( str_replace('%s', $this->Application->GetLiveName($this->TableName), $sql) );

	$res = ($res_temp == 0) && ($res_live == 0);

	if(!$res) $this->FieldErrors[$error_field]['pseudo'] = 'unique';
	}
	return $res;
	}

	/**
	* Check if field value is in range specified in config
	*
	* @param string $field field name
	* @param Array $params field options from config
	* @return bool
	* @access private
	*/
	function ValidateRange($field, $params)
	{
	$res = true;
	$val = $this->FieldValues[$field];
	$error_field = isset($params['error_field']) ? $params['error_field'] : $field;

	if ( isset($params['type']) && preg_match("#int\|integer\|double\|float\|real#", $params['type']) && strlen($val) > 0 ) {
	if ( isset($params['max_value_inc'])) {
	$res = $res && $val <= $params['max_value_inc'];
	$max_val = $params['max_value_inc'].' (inclusive)';
	}
	if ( isset($params['min_value_inc'])) {
	$res = $res && $val >= $params['min_value_inc'];
	$min_val = $params['min_value_inc'].' (inclusive)';
	}
	if ( isset($params['max_value_exc'])) {
	$res = $res && $val < $params['max_value_exc'];
	$max_val = $params['max_value_exc'].' (exclusive)';
	}
	if ( isset($params['min_value_exc'])) {
	$res = $res && $val > $params['min_value_exc'];
	$min_val = $params['min_value_exc'].' (exclusive)';
	}
	}
	if (!$res) {
	$this->FieldErrors[$error_field]['pseudo'] = 'value_out_of_range';

	if ( !isset($min_val) ) $min_val = '-∞';
	if ( !isset($max_val) ) $max_val = '∞';

	$this->FieldErrors[$error_field]['params'] = Array( $min_val, $max_val );
	return $res;
	}
	if ( isset($params['max_len'])) {
	$res = $res && strlen($val) <= $params['max_len'];
	}
	if ( isset($params['min_len'])) {
	$res = $res && strlen($val) >= $params['min_len'];
	}
	if (!$res) {
	$this->FieldErrors[$error_field]['pseudo'] = 'length_out_of_range';
	$this->FieldErrors[$error_field]['params'] = Array( getArrayValue($params,'min_len'), getArrayValue($params,'max_len') );
	return $res;
	}
	return $res;
	}

	/**
	* Return error message for field
	*
	* @param string $field
	* @return string
	* @access public
	*/
	function GetErrorMsg($field, $force_escape = null)
	{
	if( !isset($this->FieldErrors[$field]) ) return '';

	$err = getArrayValue($this->FieldErrors[$field], 'pseudo');
	if (!$err) return '';
	// if special error msg defined in config
	if( isset($this->Fields[$field]['error_msgs'][$err]) )
	{
	$msg = $this->Fields[$field]['error_msgs'][$err];
	}
	else //fall back to defaults
	{
	if( !isset($this->ErrorMsgs[$err]) ) {
	trigger_error('No user message is defined for pseudo error <b>'.$err.'</b><br>', E_USER_WARNING);
	return $err; //return the pseudo itself
	}
	$msg = $this->ErrorMsgs[$err];
	}
	$msg = $this->Application->ReplaceLanguageTags($msg, $force_escape);

	if ( isset($this->FieldErrors[$field]['params']) )
	{
	return vsprintf($msg, $this->FieldErrors[$field]['params']);
	}
	return $msg;
	}

	/**
	* Creates a record in the database table with current item' values
	*
	* @param mixed $force_id Set to TRUE to force creating of item's own ID or to value to force creating of passed id. Do not pass 1 for true, pass exactly TRUE!
	* @access public
	* @return bool
	*/
	function Create($force_id=false, $system_create=false)
	{
	if( !$this->raiseEvent('OnBeforeItemCreate') ) return false;

	// Validating fields before attempting to create record
	if( !$this->IgnoreValidation && !$this->Validate() ) return false;
	if( !$this->raiseEvent('OnAfterItemValidate') ) return false;

	if (is_int($force_id)) {
	$this->FieldValues[$this->IDField] = $force_id;
	}
	elseif (!$force_id \|\| !is_bool($force_id)) {
	$this->FieldValues[$this->IDField] = $this->generateID();
	}

	$fields_sql = '';
	$values_sql = '';
	foreach ($this->FieldValues as $field_name => $field_value)
	{
	if ($this->SkipField($field_name, $force_id)) continue;

	$fields_sql .= sprintf('`%s`, ',$field_name); //Adding field name to fields block of Insert statement
	//Adding field' value to Values block of Insert statement, escaping it with ADODB' qstr
	if (is_null( $this->FieldValues[$field_name] ))
	{
	if (isset($this->Fields[$field_name]['not_null']) && $this->Fields[$field_name]['not_null'])
	{
	$values_sql .= $this->Conn->qstr($this->Fields[$field_name]['default']).', ';
	}
	else
	{
	$values_sql .= 'NULL, ';
	}
	}
	else
	{
	$values_sql .= sprintf('%s, ',$this->Conn->qstr($this->FieldValues[$field_name], 0));
	}
	}
	//Cutting last commas and spaces
	$fields_sql = ereg_replace(", $", '', $fields_sql);
	$values_sql = ereg_replace(", $", '', $values_sql);
	$sql = sprintf('INSERT INTO %s (%s) VALUES (%s)', $this->TableName, $fields_sql, $values_sql); //Formatting query

	//Executing the query and checking the result
	if($this->Conn->ChangeQuery($sql) === false) return false;

	$insert_id = $this->Conn->getInsertID();
	if($insert_id == 0) $insert_id = $this->FieldValues[$this->IDField];
	$this->setID($insert_id);

	if (!$system_create){
	$this->setModifiedFlag();
	}

	$this->saveCustomFields();
	$this->raiseEvent('OnAfterItemCreate');
	return true;
	}

	/**
	* Deletes the record from databse
	*
	* @access public
	* @return bool
	*/
	function Delete($id = null)
	{
	if( isset($id) ) $this->setID($id);

	if( !$this->raiseEvent('OnBeforeItemDelete') ) return false;

	$q = 'DELETE FROM '.$this->TableName.' WHERE '.$this->GetKeyClause('Delete');

	$ret = $this->Conn->ChangeQuery($q);

	$this->setModifiedFlag();

	$this->raiseEvent('OnAfterItemDelete');

	return $ret;
	}

	/**
	* Sets new name for item in case if it is beeing copied
	* in same table
	*
	* @param array $master Table data from TempHandler
	* @param int $foreign_key ForeignKey value to filter name check query by
	* @access private
	*/
	function NameCopy($master=null, $foreign_key=null)
	{
	$title_field = $this->Application->getUnitOption($this->Prefix, 'TitleField');
	if (!$title_field \|\| isset($this->CalculatedFields[$title_field]) ) return;

	$new_name = $this->GetDBField($title_field);
	$original_checked = false;
	do {
	if ( preg_match('/Copy ([0-9]) of (.*)/', $new_name, $regs) ) {
	$new_name = 'Copy '.($regs[1]+1).' of '.$regs[2];
	}
	elseif ($original_checked) {
	$new_name = 'Copy of '.$new_name;
	}

	// if we are cloning in temp table this will look for names in temp table,
	// since object' TableName contains correct TableName (for temp also!)
	// if we are cloning live - look in live
	$query = 'SELECT '.$title_field.' FROM '.$this->TableName.'
	WHERE '.$title_field.' = '.$this->Conn->qstr($new_name);

	$foreign_key_field = getArrayValue($master, 'ForeignKey');
	$foreign_key_field = is_array($foreign_key_field) ? $foreign_key_field[ $master['ParentPrefix'] ] : $foreign_key_field;

	if ($foreign_key_field && isset($foreign_key)) {
	$query .= ' AND '.$foreign_key_field.' = '.$foreign_key;
	}

	$res = $this->Conn->GetOne($query);

	/*// if not found in live table, check in temp table if applicable
	if ($res === false && $object->Special == 'temp') {
	$query = 'SELECT '.$name_field.' FROM '.$this->GetTempName($master['TableName']).'
	WHERE '.$name_field.' = '.$this->Conn->qstr($new_name);
	$res = $this->Conn->GetOne($query);
	}*/

	$original_checked = true;
	} while ($res !== false);
	$this->SetDBField($title_field, $new_name);
	}

	function raiseEvent($name, $id = null, $additional_params = Array())
	{
	if( !isset($id) ) $id = $this->GetID();
	$event = new kEvent( Array('name'=>$name,'prefix'=>$this->Prefix,'special'=>$this->Special) );
	$event->setEventParam('id', $id);

	if ($additional_params) {
	foreach ($additional_params as $ap_name => $ap_value) {
	$event->setEventParam($ap_name, $ap_value);
	}
	}

	$this->Application->HandleEvent($event);
	return $event->status == erSUCCESS ? true : false;
	}

	/**
	* Set's new ID for item
	*
	* @param int $new_id
	* @access public
	*/
	function setID($new_id)
	{
	$this->ID = $new_id;
	$this->SetDBField($this->IDField, $new_id);
	}

	/**
	* Generate and set new temporary id
	*
	* @access private
	*/
	function setTempID()
	{
	$new_id = (int)$this->Conn->GetOne('SELECT MIN('.$this->IDField.') FROM '.$this->TableName);
	if($new_id > 0) $new_id = 0;
	--$new_id;

	$this->Conn->Query('UPDATE '.$this->TableName.' SET `'.$this->IDField.'` = '.$new_id.' WHERE `'.$this->IDField.'` = '.$this->GetID());
	$this->SetID($new_id);
	}

	/**
	* Set's modification flag for main prefix of current prefix to true
	*
	* @access private
	* @author Alexey
	*/
	function setModifiedFlag()
	{
	$main_prefix = $this->Application->GetTopmostPrefix($this->Prefix);
	$this->Application->StoreVar($main_prefix.'_modified', '1');
	}

	/**
	* Returns ID of currently processed record
	*
	* @return int
	* @access public
	*/
	function GetID()
	{
	return $this->ID;
	}

	/**
	* Generates ID for new items before inserting into database
	*
	* @return int
	* @access private
	*/
	function generateID()
	{
	return 0;
	}

	/**
	* Returns true if item was loaded successfully by Load method
	*
	* @return bool
	*/
	function isLoaded()
	{
	return $this->Loaded;
	}

	/**
	* Checks if field is required
	*
	* @param string $field
	* @return bool
	*/
	function isRequired($field)
	{
	return getArrayValue( $this->Fields[$field], 'required' );
	}

	/**
	* Sets new required flag to field
	*
	* @param string $field
	* @param bool $is_required
	*/
	function setRequired($field, $is_required = true)
	{
	$this->Fields[$field]['required'] = $is_required;
	}

	function Clear()
	{
	$this->setID(null);
	$this->Loaded = false;
	$this->FieldValues = Array();
	$this->SetDefaultValues();
	$this->FieldErrors = Array();
	return $this->Loaded;
	}

	function Query($force = false)
	{
	if( $this->Application->isDebugMode() )
	{
	$this->Application->Debugger->appendTrace();
	}
	trigger_error('<b>Query</b> method is called in class <b>'.get_class($this).'</b> for prefix <b>'.$this->getPrefixSpecial().'</b>', E_USER_ERROR);
	}

	function saveCustomFields()
	{
	if (!$this->customFields) {
	return true;
	}

	$cdata_key = rtrim($this->Prefix.'-cdata.'.$this->Special, '.');
	$cdata =& $this->Application->recallObject($cdata_key, null, Array('skip_autoload' => true));

	$resource_id = $this->GetDBField('ResourceId');
	$cdata->Load($resource_id, 'ResourceId');
	$cdata->SetDBField('ResourceId', $resource_id);

	$ml_formatter =& $this->Application->recallObject('kMultiLanguage');
	foreach ($this->customFields as $custom_id => $custom_name) {
	$cdata->SetDBField($ml_formatter->LangFieldName('cust_'.$custom_id), $this->GetDBField('cust_'.$custom_name));
	}

	if ($cdata->isLoaded()) {
	$ret = $cdata->Update();
	}
	else {
	$ret = $cdata->Create();
	if ($cdata->mode == 't') $cdata->setTempID();
	}

	return $ret;
	}
	}



	?>

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