Collaboration diagram for ilGlobalCacheDBLayer:

Public Member Functions
	getWhere ($field, $value, $case_sensitive=true)
	filter (array $data, $field, $value, $case_sensitive=true, $strip=true)
	where ($field, $value, $case_sensitive=true)
	get ($strip=true)
	setCachedResults ($cached_results)
	getCachedResults ()
	setRawData ($raw_data)
	getRawData ()
	setTableName ($table_name)
	getTableName ()
	setLoaded ($loaded)
	getLoaded ()
	setComponent ($component)
	getComponent ()
	setTtl ($ttl)
	getTtl ()

Static Public Member Functions
static	getInstance ($component, $table_name)

Protected Member Functions
	__construct ($component, $table_name, $ttl=NULL)
	readFromCache ()
	writeToCache ()
	updateCachedResults ()

Protected Attributes
	$component = ''
	$loaded = false
	$table_name = ''
	$raw_data = array()
	$cached_results = array()
	$ttl = NULL
	$global_cache
	$wheres = array()

Static Protected Attributes
static	$instances = array()

Detailed Description

Class ilGlobalCacheDBLayer.

Author: Fabian Schmid fs@st.nosp@m.uder.nosp@m.-raim.nosp@m.ann..nosp@m.ch

Version: 1.0.0

Definition at line 10 of file class.ilGlobalCacheDBLayer.php.

Constructor & Destructor Documentation

ilGlobalCacheDBLayer::__construct	(	$component,
		$table_name,
		$ttl = `NULL`
	)

protected

Parameters

	$component
	$table_name
int	$ttl

Definition at line 55 of file class.ilGlobalCacheDBLayer.php.

References $component, $table_name, $ttl, getInstance(), getLoaded(), readFromCache(), setComponent(), setLoaded(), setTableName(), setTtl(), and writeToCache().

                                                                             {
                $this->setTtl($ttl);
                $this->setComponent($component);
                $this->setTableName($table_name);
                $this->global_cache = ilGlobalCache::getInstance($component);
                $this->readFromCache();
                if (! $this->getLoaded()) {
                        $this->readFromDB();
                        $this->writeToCache();
                        $this->setLoaded(true);
                }
        }

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Member Function Documentation

ilGlobalCacheDBLayer::filter	(	array	$data,
			$field,
			$value,
			$case_sensitive = `true`,
			$strip = `true`
	)

Parameters

array	$data
	$field
	$value
bool	$case_sensitive
bool	$strip

Returns: array

Definition at line 128 of file class.ilGlobalCacheDBLayer.php.

References $result, and getTableName().

Referenced by getWhere().

                                                                                                   {
                if (is_array($value)) {
                        $index = md5(serialize($value)) . $case_sensitive;
                } else {
                        $index = $value . $case_sensitive;
                }
                if (isset($this->cached_results[$this->getTableName()][$field][$index])) {
                        return $this->cached_results[$this->getTableName()][$field][$index];
                }
                $result = array();
                foreach ($data as $dat) {
                        if ($case_sensitive) {
                                if (is_array($value)) {
                                        if (in_array($dat->{$field}, $value)) {
                                                $result[] = $dat;
                                        }
                                } elseif ($dat->{$field} == $value) {
                                        $result[] = $dat;
                                }
                        } else {
                                if (is_array($value)) {
                                        if (preg_grep("/" . $dat->{$field} . "/i", $value)) {
                                                $result[] = $dat;
                                        }
                                } elseif (strcasecmp($dat->{$field}, $value) == 0) {
                                        $result[] = $dat;
                                }
                        }
                }
                if (count($result) == 1 AND $strip) {
                        $result = $result[0];
                }
                $this->cached_results[$this->getTableName()][$field][$index] = $result;
                $this->updateCachedResults();
                return $result;
        }

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ilGlobalCacheDBLayer::get ( $strip = true )

Parameters

bool $strip

Returns: array

Definition at line 197 of file class.ilGlobalCacheDBLayer.php.

References $result.

                                           {
                $result = $this->getRawData();
                foreach ($this->wheres as $ilGcDbWhere) {
                        $result = $this->filter($result, $ilGcDbWhere->getField(), $ilGcDbWhere->getValue(), $ilGcDbWhere->getCaseSensitive(), false);
                }
                if (count($result) == 1 AND $strip) {
                        //                      echo '<pre>' . print_r($result, 1) . '</pre>';
                        $result = $result[0];
                }
                return $result;
        }

ilGlobalCacheDBLayer::getCachedResults ( )

Returns: array

Definition at line 238 of file class.ilGlobalCacheDBLayer.php.

                                           {
                return $this->cached_results;
        }

ilGlobalCacheDBLayer::getComponent ( )

Returns: string

Definition at line 302 of file class.ilGlobalCacheDBLayer.php.

                                       {
                return $this->component;
        }

static ilGlobalCacheDBLayer::getInstance	(	$component,
		$table_name
	)

static

Parameters

$component
$table_name

Returns: ilGlobalCacheDBLayer

Definition at line 218 of file class.ilGlobalCacheDBLayer.php.

Referenced by __construct().

                                                                    {
                if (! isset(self::$instances[$component . $table_name])) {
                        self::$instances[$component . $table_name] = new self($component, $table_name);
                }
                return self::$instances[$component . $table_name];
        }

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ilGlobalCacheDBLayer::getLoaded ( )

Returns: boolean

Definition at line 286 of file class.ilGlobalCacheDBLayer.php.

Referenced by __construct().

                                    {
                return $this->loaded;
        }

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ilGlobalCacheDBLayer::getRawData ( )

Returns: array

Definition at line 254 of file class.ilGlobalCacheDBLayer.php.

Referenced by getWhere(), and writeToCache().

                                     {
                return $this->raw_data;
        }

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ilGlobalCacheDBLayer::getTableName ( )

Returns: string

Definition at line 270 of file class.ilGlobalCacheDBLayer.php.

Referenced by filter(), readFromCache(), and writeToCache().

                                       {
                return $this->table_name;
        }

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ilGlobalCacheDBLayer::getTtl ( )

Returns: int

Definition at line 318 of file class.ilGlobalCacheDBLayer.php.

Referenced by writeToCache().

                                 {
                return $this->ttl;
        }

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ilGlobalCacheDBLayer::getWhere	(	$field,
		$value,
		$case_sensitive = `true`
	)

Parameters

	$field
	$value
bool	$case_sensitive

Returns: array

Definition at line 112 of file class.ilGlobalCacheDBLayer.php.

References filter(), and getRawData().

                                                                         {
                return $this->filter($this->getRawData(), $field, $value, $case_sensitive);
        }

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ilGlobalCacheDBLayer::readFromCache ( )

protected

Definition at line 69 of file class.ilGlobalCacheDBLayer.php.

References $cached_results, getTableName(), setCachedResults(), setLoaded(), and setRawData().

Referenced by __construct().

                                           {
                if ($this->global_cache->isActive()) {
                        $data = $this->global_cache->get($this->getTableName() . '_raw_data');
                        $cached_results = $this->global_cache->get($this->getTableName() . '_cached_results');
                        if (is_array($data)) {
                                $this->setRawData($data);
                                $this->setCachedResults($cached_results);
                                $this->setLoaded(true);
                        }
                }
        }

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ilGlobalCacheDBLayer::setCachedResults ( $cached_results )

Parameters

array $cached_results

Definition at line 230 of file class.ilGlobalCacheDBLayer.php.

Referenced by readFromCache().

                                                          {
                $this->cached_results = $cached_results;
        }

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ilGlobalCacheDBLayer::setComponent ( $component )

Parameters

string $component

Definition at line 294 of file class.ilGlobalCacheDBLayer.php.

Referenced by __construct().

                                                 {
                $this->component = $component;
        }

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ilGlobalCacheDBLayer::setLoaded ( $loaded )

Parameters

boolean $loaded

Definition at line 278 of file class.ilGlobalCacheDBLayer.php.

Referenced by __construct(), and readFromCache().

                                           {
                $this->loaded = $loaded;
        }

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ilGlobalCacheDBLayer::setRawData ( $raw_data )

Parameters

array $raw_data

Definition at line 246 of file class.ilGlobalCacheDBLayer.php.

Referenced by readFromCache().

                                              {
                $this->raw_data = $raw_data;
        }

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ilGlobalCacheDBLayer::setTableName ( $table_name )

Parameters

string $table_name

Definition at line 262 of file class.ilGlobalCacheDBLayer.php.

Referenced by __construct().

                                                  {
                $this->table_name = $table_name;
        }

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ilGlobalCacheDBLayer::setTtl ( $ttl )

Parameters

int $ttl

Definition at line 310 of file class.ilGlobalCacheDBLayer.php.

Referenced by __construct().

                                     {
                $this->ttl = $ttl;
        }

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ilGlobalCacheDBLayer::updateCachedResults ( )

protected

Definition at line 169 of file class.ilGlobalCacheDBLayer.php.

Referenced by writeToCache().

                                                 {
                $this->global_cache->set($this->getTableName() . '_cached_results', $this->getCachedResults());
        }

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ilGlobalCacheDBLayer::where	(	$field,
		$value,
		$case_sensitive = `true`
	)

Parameters

	$field
	$value
bool	$case_sensitive

Returns: $this

Definition at line 181 of file class.ilGlobalCacheDBLayer.php.

                                                                      {
                $ilGcDbWhere = new ilGcDbWhere();
                $ilGcDbWhere->setField($field);
                $ilGcDbWhere->setValue($value);
                $ilGcDbWhere->setCaseSensitive($case_sensitive);
                $this->wheres[] = $ilGcDbWhere;
                return $this;
        }

ilGlobalCacheDBLayer::writeToCache ( )

protected

Definition at line 82 of file class.ilGlobalCacheDBLayer.php.

References getRawData(), getTableName(), getTtl(), and updateCachedResults().

Referenced by __construct().

                                          {
                if ($this->global_cache->isActive()) {
                        $this->global_cache->set($this->getTableName() . '_raw_data', $this->getRawData(), $this->getTtl());
                        $this->updateCachedResults();
                }
        }