class.ilAdvancedMDFieldDefinitionSelectMulti.php

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<?php
/* Copyright (c) 1998-2013 ILIAS open source, Extended GPL, see docs/LICENSE */

require_once "Services/AdvancedMetaData/classes/Types/class.ilAdvancedMDFieldDefinitionSelect.php";

class ilAdvancedMDFieldDefinitionSelectMulti extends ilAdvancedMDFieldDefinitionSelect
{                               
        const XML_SEPARATOR = "~|~";
        
        //
        // generic types
        // 
        
        public function getType()
        {
                return self::TYPE_SELECT_MULTI;
        }
        
        
        //
        // ADT
        //
        
        protected function initADTDefinition()
        {               
                $def = ilADTFactory::getInstance()->getDefinitionInstanceByType("MultiEnum");
                $def->setNumeric(false);
                
                $options = $this->getOptions();
                $def->setOptions(array_combine($options, $options));
                
                // see ilAdvancedMDValues::getActiveRecord()
                // using ilADTMultiEnumDBBridge::setFakeSingle()
                
                return $def;
        }       
        
        
        //
        // definition (NOT ADT-based)
        // 
        
        public function importCustomDefinitionFormPostValues(ilPropertyFormGUI $a_form)
        {       
                $old = $this->getOptions();
                $new = $a_form->getInput("opts");
                
                $missing = array_diff($old, $new);
                if(sizeof($missing))
                {               
                        $this->confirmed_objects = $this->buildConfirmedObjects($a_form);
                        if(!is_array($this->confirmed_objects))
                        {                                                                       
                                $search = ilADTFactory::getInstance()->getSearchBridgeForDefinitionInstance($this->getADTDefinition(), false, false);                                                   
                                ilADTFactory::initActiveRecordByType();
                                
                                foreach($missing as $missing_value)
                                {                                       
                                        $in_use = $this->findBySingleValue($search, $missing_value);                            
                                        if(sizeof($in_use))
                                        {
                                                foreach($in_use as $item)
                                                {
                                                        $this->confirm_objects[$missing_value][] = $item;
                                                }
                                        }                                       
                                }                               
                        }
                }
                
                $this->old_options = $old;
                $this->setOptions($new);        
        }
        
        protected function findBySingleValue(ilADTEnumSearchBridgeMulti $a_search, $a_value)
        {
                $res = array();
                
                $a_search->getADT()->setSelections(array($a_value));    
                $condition = $a_search->getSQLCondition(ilADTActiveRecordByType::SINGLE_COLUMN_NAME);
                                        
                $in_use = ilADTActiveRecordByType::find(
                        "adv_md_values", 
                        "Enum", 
                        $this->getFieldId(),  
                        $condition
                );      
                if($in_use)
                {
                        foreach($in_use as $item)
                        {
                                $res[] = array($item["obj_id"], $item["sub_type"], $item["sub_id"], $item["value"]);
                        }
                }       
                
                return $res;
        }
        
        
        //
        // definition CRUD 
        //
        
        public function update()
        {               
                if(sizeof($this->confirmed_objects))
                {
                        // we need the "old" options for the search
                        $def = $this->getADTDefinition();
                        $def = clone($def);
                        $def->setOptions(array_combine($this->old_options, $this->old_options));                        
                        $search = ilADTFactory::getInstance()->getSearchBridgeForDefinitionInstance($def, false, false);                        
                        ilADTFactory::initActiveRecordByType();
                        
                        foreach($this->confirmed_objects as $old_option => $item_ids)
                        {                               
                                // get complete old values
                                $old_values = array();
                                foreach($this->findBySingleValue($search, $old_option) as $item)
                                {
                                        $old_values[$item[0]."_".$item[1]."_".$item[2]] = $item[3];
                                }
                                
                                foreach($item_ids as $item => $new_option)
                                {
                                        $parts = explode("_", $item);
                                        $obj_id = $parts[0];
                                        $sub_type = $parts[1];
                                        $sub_id = $parts[2];
                                        
                                        if(!$new_option)
                                        {
                                                // remove existing value                                        
                                                $primary = array(
                                                        "obj_id" => array("integer", $obj_id),
                                                        "sub_type" => array("text", $sub_type),
                                                        "sub_id" => array("integer", $sub_id),
                                                        "field_id" => array("integer", $this->getFieldId())
                                                );
                                                ilADTActiveRecordByType::deleteByPrimary("adv_md_values", $primary, "MultiEnum");
                                        }
                                        else
                                        {               
                                                // update existing value (with changed option)                                          
                                                if(isset($old_values[$item]))
                                                {
                                                        // find changed option in old value
                                                        $old_value = explode(ilADTMultiEnumDBBridge::SEPARATOR, $old_values[$item]);
                                                        // remove separators
                                                        array_shift($old_value);
                                                        array_pop($old_value);
                                                        $old_idx = array_keys($old_value, $old_option);                                                 
                                                        if(sizeof($old_idx))
                                                        {
                                                                // switch option
                                                                $old_idx = array_pop($old_idx);                                         
                                                                $old_value[$old_idx] = $new_option;                                                                     
                                                                $new_value = array_unique($old_value);  
                                                                // add separators
                                                                $new_value = ilADTMultiEnumDBBridge::SEPARATOR.
                                                                        implode(ilADTMultiEnumDBBridge::SEPARATOR, $new_value).
                                                                        ilADTMultiEnumDBBridge::SEPARATOR;
                                                                
                                                                $primary = array(
                                                                        "obj_id" => array("integer", $obj_id),
                                                                        "sub_type" => array("text", $sub_type),
                                                                        "sub_id" => array("integer", $sub_id),
                                                                        "field_id" => array("integer", $this->getFieldId())
                                                                );
                                                                ilADTActiveRecordByType::writeByPrimary("adv_md_values", $primary, "MultiEnum", $new_value);
                                                        }
                                                }                       
                                        }
                                                                                
                                        if($sub_type == "wpg")
                                        {
                                                // #15763 - adapt advmd page lists
                                                include_once "Modules/Wiki/classes/class.ilPCAMDPageList.php";
                                                ilPCAMDPageList::migrateField($obj_id, $this->getFieldId(), $old_option, $new_option, true);                                                                                            
                                        }       
                                }                               
                        }                       
                        
                        $this->confirmed_objects = array();
                }       
                        
                parent::update();               
        }
        
        
        // 
        // import/export
        //
        
        public function getValueForXML(ilADT $element)
        {                                       
                return self::XML_SEPARATOR.
                        implode(self::XML_SEPARATOR, $element->getSelections()).
                        self::XML_SEPARATOR;
        }
        
        public function importValueFromXML($a_cdata)
        {                       
                $this->getADT()->setSelections(explode(self::XML_SEPARATOR, $a_cdata));                 
        }       
}