PVCache

Extends \PVStaticObject

PVCache is a system for caching data and retrieving cached data.

The default system uses a file cache for caching data. But the system through the adapter pattern is extendable to use any caching system attached to the application.

Example:

//Init The Cache
PVCache::init();

$data = array('Apples', 'Oranges', 'Bananas');

//Check if cache has expired
if(PVCache::hasExpired('mycache')):
     //Store The Cache
     PVCache::writeCache('mycache', $data);
endif;

$data = PVCache::readCache('mycache');

print_r($data);
package

util

Methods

Uses the magic method __call and executes a closure/anonymous function that has been added to the classes $_methods using the addMethod() method.

__callStatic(string $method, mixed $args = array()) : mixed
inherited static
access

public

Arguments

$method

string

The key/name assigned to the method when added

$args

mixed

Arguements to pass to the annoymous function. The function is called using call_user_func_array.

Response

mixed

$value The value returned is the value the stored function returns

Apply a fitler if filter is set.

_applyFilter(string $class, string $method, mixed $data, array $options = array()) : mixed
inherited static
access

protected

Arguments

$class

string

The name of the class the filter is in

$method

string

The method the filter is in

$data

mixed

The data that is being passed to the filter

$options

array

options to be passed to the filter. Passed options we be passed to the function. -'default_return' mixed: If no filter is return, the data passed in by default will be return. Can be overriden -'event' string: An event to associate with the filter. Default is null

Response

mixed

$data The data the function returns

Calls an adapter for this class. The easiest way of implementing an adapter is by placing the adapter at the top of the function that it is being called in. An infinite amout of parameters can be passed to the adapter BUT the parameters should be the same as the parents.

_callAdapter(string $class, string $method) : mixed
inherited static
access

protected

Arguments

$class

string

The name of the class the adapter is in

$method

string

THe name of the method the class is being called from.

Response

mixed

$value A value that the adapter returns

Checks if an adapter is set for the function.

_hasAdapter( $class, string $method) : \boolea
inherited static
access

protected

Arguments

$class

$method

string

The associated method

Response

\boolea

$hasAdapter Returns true if it has an adapter or false if it doesn not

Checks if a filter has been set.

_hasFilter(string $class, string $method) 
inherited static

Arguments

$class

string

The class the filter is in

$method

string

The method of the class that the filter is in

Calls a methods that is an instance of an class. This method is generally faster than using user_call_func_array.

_invokeMethod(string $class, string $method, array $args) : mixed
inherited static
access

protected

Arguments

$class

string

The name of the class to be called

$method

string

The name of the method in the class to be called

$args

array

An array of arguements. Arguements have to be embedded in an array to be called.

Response

mixed

$data Data returned by the function called

Calls a methods that is a static method of a class. This method is generally faster than using user_call_func_array.

_invokeStaticMethod(string $class, string $method, array $args) : mixed
inherited static
access

protected

Arguments

$class

string

The name of the class to be called

$method

string

The name of the method in the class to be called

$args

array

An array of arguements. Arguements have to be embedded in an array to be called.

Response

mixed

$data Data returned by the function called

Write out the contents of adapters used to a log

_logAdapter(array $data) : void
inherited static
access

private

Arguments

$data

array

The data in the adapter

Write out the contents of a filter used to a log

_logFilter(array $data) : void
inherited static
access

private

Arguments

$data

array

The data in the filter

Write out the contents of an observer to a log.

_logObserver(array $data) : void
inherited static
access

private

Arguments

$data

array

The data in the observer

Calls any functions that have been added to the observer if the event is present in the observers array.

_notify(string $event) : void
inherited static
access

protected

Arguments

$event

string

The name of the even that occured that will trigger notifies

Breaks down the data to be logged from an adapter, filter or observer.

_prepareLogData(array $data) : string
inherited static
access

private

Arguments

$data

array

Response

string

$message JSON encode message of information about the data

Adapters allows a method to be completely overwritten by calling a different class with the same method name. Adapters can also be used with closures. The adapter uses a strategy/adapter design pattern.

addAdapter(string $trigger_class, string $trigger_method, string $call_class, array $options = array()) : void
inherited static
access

public

todo

add ability to adapt singleton class

Arguments

$trigger_class

string

The class that contains the function the adapter will respond too

$trigger_method

string

The method called that will have the adapter to be called.

$call_class

string

The new class to be called that has the same method name

$options

array

An array of options that be called -'object' string : Assumes that default method in the class to be called is static. If called object needs to be instantiated, change to object to 'instance' and one will be created before the adapter calls the function -'call_method' string: By default the method to be called to override the current one should be the same name. But this can be ovveridden to call a different method. -'type' string: The type of method being called. Default is class_method but if the method is a closure, set the type to be 'closure' and make the $trigger_method the closure

Will add an adapter for every method in the trigger_class to another class. The method will only be adapted to another class if the method in the trigger class has an adapter. This functionality can be very similiar to DI.

addClassAdapter(mixed $trigger_class, string $call_class, array $options = array()) : void
inherited static
access

public

todo

Add ability to use singleton classes

Arguments

$trigger_class

mixed

This can either be the name of the class or an object whose methods will be adapted to another class. The class should be included or be autoloaded by this point.

$call_class

string

The call class is the classes methods that will be called in place of the methods in the trigger_class. These class does not have to be included as this point.

$options

array

Options that be used to further distinguish the behavior of the adapters added -'object' string: Determines if the object being adapted to is static or an instance.Default is static -'call_class' string: The name of the class that the methods will be adapted too. -'class' string: The name of the whose methods will be adapted to another class

Adds a filter to the class. Filters are for modifying a value within a class and should not interpet the normal flow within the method.

addFilter(string $class, string $method, string $filter_class, string $filter_method, array $options = array()) : void
inherited static
access

public

Arguments

$class

string

The name of the class the filter is going in

$method

string

The name of the method the filter is in

$filter_class

string

The class that the filter resides in.

$filter_method

string

The method in the class that the parameters will be passed too.

$options

array

Options that can be set for further modifying the filter. -'object' string: If the method being called is static, static should be inserted. If its in an instance, 'instance' should be set. Default is set to static. -'event' string: Associate this filter with an event. -'type' string: The type of function being called. Default is class_method but if the function is a closure, set the type to be 'closure' and make the $filter_method the closure

Adds a closure/anonymous function to the object that can be called.

addMethod(string $method, \function $closure) : void
inherited static
access

public

Arguments

$method

string

The key/value that will be used to call the function

$closure

\function

The anonymous function/closure to be added

Adds an observer to the class. Observer events can fired in any method to trigger a response.

addObserver(string $event, string $class, string $method, array $options = array()) : void
inherited static
access

public

Arguments

$event

string

The name of the event that will cause a certain class and method to fire

$class

string

The name of the class that contains the function that will be fired for this event

$method

string

The name of the method that will be fired when the event occurs

$options

array

Options to further the define the firing of an event -'object' string : If the method being called is static, should be set to static. Else set to instance -'class' stinrg : The name of the class to be called. Default is the class that is passed in. -'method' string: The name of the method to be called. Default is the method that is passed in. -'type' string: The type of function being called. Default is class_method but if the function is a closure, set the type to be 'closure' and make the $method the closure

Adds a data to the public collection, index will be assigned automatically. Primarily used for adding launch quanties of data to the collection

addToCollection(mixed $data) : void
inherited static
access

public

Arguments

$data

mixed

Any data type( Object, Array, int, etc) to add to the public data collection

Adds data to the public collection. The data is assigned a key/index. If the key/index is already set, new information will override the old one.

addToCollectionWithName(string $name, mixed $data) : void
inherited static
access

public

todo

check the relevance of get and set

Arguments

$name

string

The key/index to assign the value to

$data

mixed

Data to be stored in the collection

Remove all the filters from a class.

clearFilters(string $class, string $method) : void
inherited static
access

public

Arguments

$class

string

The class the filter is in

$method

string

The method of the class that the filter is in

Removes all the observers assoicated with an event.

clearObservers(string $event) : void
inherited static
access

public

Arguments

$event

string

The event to remove all the observers from

Delete the cached file, if it exist

deleteCache(string $key, array $options = array()) : void
static
access

public

Arguments

$key

string

The key to search for the cache by

$options

array

Options that define how the cache data is deleted -'cache_location' string: The location the cached is saved

Retrieves a value that is in the public data collection or was pass through by the set method.

get(string $index) : mixed
inherited static
access

public

Arguments

$index

string

The index to retrieve a value from

Response

mixed

$data The data that was stored at that index

Get the expiration date of the cached file, if it exist.

getExpiration(string $key, array $options = array()) : string
static
access

public

Arguments

$key

string

The key to search for the cache by

$options

array

Options that define how the cache date is be found -'cache_format' string: The date/time format used when caching -'cache_format_search' string: The preg_match to use when searching for the cache date/time -'enclosing_tags' array: Tags that will encase the cached tag -'cache_location' string: The location the cached is saved -'cache_name' string: The name to assign to the cache when both writing and reading it

Response

string

$expired Returns the date to expire, in string format

Returns the instance of a class. Used for implementing the singleton design pattern. Class will only be instantiated once.

getInstance() : object
inherited static
access

public

Response

object

$instance Returns the instance of a class.

Returns the iterator for iterating through the values stored in the classes collection.

getIterator() : \PVIterator
inherited static

Response

\PVIterator

$iterator The classes collection in an iteratable form

access public

Returns the memcache object

getMemcacheObject() : object
static
access

pulbic

Response

object

$memcache The memcache object

Check to see if the current cache has expired. Returns true if it has, otherwise false.

hasExpired(string $key, array $options = array()) : boolean
static
access

public

Arguments

$key

string

The key to search for the cache by

$options

array

Options that define how the cache is be found -'cache_format' string: The date/time format used when caching -'cache_format_search' string: The preg_match to use when searching for the cache date/time -'enclosing_tags' array: Tags that will encase the cached tag -'cache_location' string: The location the cached is saved -'cache_name' string: The name to assign to the cache when both writing and reading it

Response

boolean

$expired Returns true if expired, otherwise false

Initalize PVCache by setting the location to save cached files and initialize memchace servers

init(array $config = array()) : void
static
access

public

Arguments

$config

array

An array of configuration options. Options will be the defaults for other options. -'cache_format' string: The date/time format used when caching -'cache_format_search' string: The preg_match to use when searching for the cache date/time -'enclosing_tags' array: Tags that will encase the files to be caches -'cache_location' string: The location the cached is saved -'cache_name' string: The name to assign to the cache when both writing and reading it -'cache_expire' int: Ovveride the default expiration time by setting your own

Read the content of a cached file

readCache(string $key, array $options = array()) : string
static
access

public

Arguments

$key

string

The key to be used to access the cached file

$options

array

Options that define how the files are cached -'cache_format' string: The date/time format used when caching -'cache_format_search' string: The preg_match to use when searching for the cache date/time -'enclosing_tags' array: Tags that will encase the files to be caches -'cache_location' string: The location the cached is saved -'cache_name' string: The name to assign to the cache when both writing and reading it -'cache_expire' int: Ovveride the default expiration time by setting your own

Response

string

$content The cached content

Read content from mime cache

readMemcache(string $key, array $options = array()) : mixed
static
access

public

Arguments

$key

string

The key that is assoicated with the file

$options

array

Options that are used when defining memcache -'flag' int: The flag used when reading from the memcache object

Response

mixed

$content Content returned from the memcache object

Removes an adapter.

removeAdapter( $class, string $method) : void
inherited static
access

public

Arguments

$class

$method

string

The associated method

Removes an adapter for an entire class.

removeClassAdapter( $class) : void
inherited static
access

public

Arguments

$class

Remove cached data from memcache

removeMemcache(string $key, array $options = array()) : void
static
access

public

Arguments

$key

string

The key that is assoicated with the file

$options

array

Options that are used when deleting a file -'flush' boolean: Default is false, if set to true will delete all files in cache

Adds a value to the classes Collection. By default the collection is stored in the public collection. The stored instance can be retrieved later by called in it's key value.

set(string $index, mixed $value) : void
inherited static
access

public

Arguments

$index

string

The key or index to store the value at

$value

mixed

A mixed value that can be anytype

Turn on/off the ability to trace an adapter.Turning on will log an adapter using PVLog when adapter is executed.

setAdapterTrace(boolean $trace = false) : void
inherited static
access

public

Arguments

$trace

boolean

Default is false. If set to true, will trace adatper.

Turn on/off the ability to trace an filter.Turning on will log a filter using PVLog when filter is executed.

setFilterTrace(boolean $trace = false) : void
inherited static
access

public

Arguments

$trace

boolean

Default is false. If set to true, will trace filter.

Turn on/off the ability to trace an observer.Turning on will log an observer using PVLog when the observer is executed.

setObserverTrace(boolean $trace = false) : void
inherited static
access

public

Arguments

$trace

boolean

Default is false. If set to true, will trace observer.

Write the content to cache out to file

writeCache(string $key, string $content, array $options = array()) : void
static
access

public

Arguments

$key

string

The key to be used accessing the cache

$content

string

The content to be cached

$options

array

Options that define how the files are cached -'cache_format' string: The date/time format used when caching -'cache_format_search' string: The preg_match to use when searching for the cache date/time -'enclosing_tags' array: Tags that will encase the files to be caches -'cache_location' string: The location the cached is saved -'cache_name' string: The name to assign to the cache when both writing and reading it -'cache_expire' int: Ovveride the default expiration time by setting your own

Write content to memcache.

writeMemcache(string $key, mixed $content, array $options = array()) : void
static
access

public

Arguments

$key

string

The key that will be assoicated with the file

$content

mixed

The content that will be written to memcache

$options

array

Options that are used when defining memcache -'flag' int: The flag used when writing to the memcache object -'cache_expire'int: Override the default cache expire. Expiration is set in seconds -'add_only' boolean: Only add to the cache if the key does not already exist -'replace' boolean: Only add to the cache if the key does exit

Properties

File location to store the cache

_cache_location : 
static

Type(s)

The date format for storing the cache

_cache_format : 
static

Type(s)

The name to preprend to cache

_cache_name : 
static

Type(s)

How to wrap the the cache

_enclosing_tags : 
static

Type(s)

Memcache connection

_memcache : 
static

Type(s)

Default time to live for the cache

_cache_expire : 
static

Type(s)

A collection of items that belong to this class

_collection : 
inherited static

Type(s)

A collection of dynamically added methods that below to this class

_methods : 
inherited static

Type(s)

The adapters that have been added

_adapters : 
inherited static

Type(s)

Observers that have been added

_observers : 
inherited static

Type(s)

Instances for singleton that have added

_instances : 
inherited static

Type(s)

Intercepting filters that have been added

_filters : 
inherited static

Type(s)

Boolean for following and logging adapters that have been added

_traceAdapters : 
inherited static

Type(s)

Boolean for following and logging filters that have been added

_traceFilters : 
inherited static

Type(s)

Boolean for following and logging observers that have been added.

_traceObservers : 
inherited static

Type(s)