util object to hold ZFObject as cache More...

#include <ZFCache.h>

Inheritance diagram for ZFCache:

Public Types
enum

Public Types inherited from ZFObject
enum

Public Member Functions
virtual const ZFClass *	classData (void)
	get instance's class info

virtual zfindex &	cacheMaxSize ()
	max cache size, 10 by default

virtual void	cacheMaxSize (zfindex const &propertyValue)
	see cacheMaxSize

virtual zfbool &	cacheTrimWhenMemoryLow ()
	whether invoke cacheTrim when receive ZFGlobalEvent::E_AppOnMemoryLow, true by default

virtual void	cacheTrimWhenMemoryLow (zfbool const &propertyValue)
	see cacheTrimWhenMemoryLow

virtual zffloat &	cacheTrimThreshold ()
	leave how many cache alive while cacheTrimWhenMemoryLow, 0.2 by default

virtual void	cacheTrimThreshold (zffloat const &propertyValue)
	see cacheTrimThreshold

virtual void	cacheAdd (const zfstring &cacheKey, ZFObject *cacheValue)
	add cache

virtual zfauto	cacheGet (const zfstring &cacheKey)
	access and remove cache, or return null if not exist, see cacheCheck

virtual zfauto	cacheCheck (const zfstring &cacheKey)
	check cache, or return null if not exist, see cacheGet

virtual void	cacheRemove (const zfstring &cacheKey)
	remove all cache with cacheKey

virtual void	cacheRemoveAll ()
	remove all cache

virtual void	cacheTrim (zfindex size)
	util method to trim the cache so that the cached data won't exceeds specified size

virtual void	cacheGetAllT (ZFCoreArray< zfstring > &cacheKeyList, ZFCoreArray< zfauto > &cacheValueList)
	access all cache data, used for debug only

Public Member Functions inherited from ZFObject
zfindex	objectRetainCount (void)
	return the object's retain count

void	objectInfoOfInstanceT (zfstring &ret)
	see objectInfoOfInstance

zfstring	objectInfoOfInstance (void)
	return a short string describe the object instance

void	objectInfoT (zfstring &ret)
	see objectInfo

zfstring	objectInfo (void)
	return object info

zfidentity	objectHash (void)
	get hash of this object

ZFCompareResult	objectCompare (ZFObject *anotherObj)
	compare with anotherObj

ZFCompareResult	objectCompareValue (ZFObject *anotherObj)
	explicitly compare object by logical value, see objectCompare

virtual zfauto	invoke (const zfstring &methodName)
	util method to perform ZFDI_invoke, do nothing if fail

virtual zfauto	invoke (const zfstring &methodName, ZFObject param0, ZFObject param1=((ZFObject const &) _ZFP_ZFMP_DEF), ZFObject param2=((ZFObject const &) _ZFP_ZFMP_DEF), ZFObject param3=((ZFObject const &) _ZFP_ZFMP_DEF), ZFObject param4=((ZFObject const &) _ZFP_ZFMP_DEF), ZFObject param5=((ZFObject const &) _ZFP_ZFMP_DEF), ZFObject param6=((ZFObject const &) _ZFP_ZFMP_DEF), ZFObject param7=((ZFObject *const &) _ZFP_ZFMP_DEF))
	util method to perform ZFDI_invoke, do nothing if fail

virtual zfbool	invokeT (zfauto &ret, zfstring errorHint, const zfstring &methodName, ZFObject param0=((ZFObject const &) _ZFP_ZFMP_DEF), ZFObject param1=((ZFObject const &) _ZFP_ZFMP_DEF), ZFObject param2=((ZFObject const &) _ZFP_ZFMP_DEF), ZFObject param3=((ZFObject const &) _ZFP_ZFMP_DEF), ZFObject param4=((ZFObject const &) _ZFP_ZFMP_DEF), ZFObject param5=((ZFObject const &) _ZFP_ZFMP_DEF), ZFObject param6=((ZFObject const &) _ZFP_ZFMP_DEF), ZFObject param7=((ZFObject *const &) _ZFP_ZFMP_DEF))
	util method to perform ZFDI_invoke, do nothing if fail

virtual zfauto	invokeDetail (const zfstring &methodName, const ZFCoreArray< zfauto > &params, zfbool success=zft_zfnull, zfstring errorHint=zft_zfnull)
	util method to perform ZFDI_invoke, do nothing if fail

zfbool	objectTagExist (void)
	see objectTag, true if this object has tag, and tag can be checked by objectTagGetAllKeyValue

void	objectTag (const zfstring &key, ZFObject *tag)
	used to hold a object for app's use, auto retained

zfany	objectTag (const zfstring &key)
	see objectTag

void	objectTagGetAllKeyValue (ZFCoreArray< zfstring > &allKey, ZFCoreArray< zfauto > &allValue)
	get all key value

void	objectTagRemove (const zfstring &key)
	remove tag, same as set tag to null

zfauto	objectTagRemoveAndGet (const zfstring &key)
	remove tag, return removed tag or null if not exist

void	objectTagRemoveAll (void)
	remove all tag

void	observerAdd (zfidentity eventId, const ZFListener &observer, ZFLevel observerLevel=ZFLevelAppNormal)
	see observerNotify

void	observerAddForOnce (zfidentity eventId, const ZFListener &observer, ZFLevel observerLevel=ZFLevelAppNormal)
	see observerNotify

void	observerRemove (zfidentity eventId, const ZFListener &callback)
	see observerNotify

void	observerRemoveAll (zfidentity eventId)
	see observerNotify

void	observerRemoveAll (void)
	see observerNotify

zfbool	observerHasAdd (void)
	true if any observer has been added

zfbool	observerHasAdd (zfidentity eventId)
	true if any observer with eventId has been added

void	observerNotify (zfidentity eventId, ZFObject param0=zft_zfnull, ZFObject param1=zft_zfnull)
	notify the observer with eventId

void	observerNotifyWithSender (ZFObject customSender, zfidentity eventId, ZFObject param0=zft_zfnull, ZFObject *param1=zft_zfnull)
	see observerNotify

void	observerNotifyReversely (zfidentity eventId, ZFObject param0=zft_zfnull, ZFObject param1=zft_zfnull)
	see observerNotify

void	observerNotifyReverselyWithSender (ZFObject customSender, zfidentity eventId, ZFObject param0=zft_zfnull, ZFObject *param1=zft_zfnull)
	see observerNotify

ZFObserver &	observerHolder (void)
	access the internal observer holder

void	on (const zfstring &eventName, const ZFListener &observer, ZFLevel observerLevel=ZFLevelAppNormal)
	util to observerAdd

void	on (zfidentity eventId, const ZFListener &observer, ZFLevel observerLevel=ZFLevelAppNormal)
	util to observerAdd

void	onInit (const ZFListener &impl)
	util for script to achieve chained call

void	onDealloc (const ZFListener &impl)
	util for script to achieve chained call

zfbool	objectInstanceStateCheck (ZFObjectInstanceState state)
	object instance's state

zfbool	objectInitRunning (void)
	util method to check whether ZFObjectInstanceStateOnInit or ZFObjectInstanceStateOnInitFinish running

zfbool	objectDeallocRunning (void)
	util method to check whether ZFObjectInstanceStateOnDeallocPrepare or ZFObjectInstanceStateOnDealloc running

virtual zfbool	objectIsInternal (void)
	whether this object is internal object or its class is ZFClass::classIsInternal

virtual zfbool	objectIsInternalPrivate (void)
	whether this object is internal private object or its class is ZFClass::classIsInternalPrivate

Static Public Member Functions
static const ZFClass *	ClassData (void)
	get class info

static zfidentity	E_CacheOnAdd (void)
	see ZFObject::observerNotify

static zfidentity	E_CacheOnRemove (void)
	see ZFObject::observerNotify

Static Public Member Functions inherited from ZFObject
static const ZFClass *	ClassData (void)
	get class info

static zfidentity	E_ObjectBeforeAlloc (void)
	see ZFObject::observerNotify

static zfidentity	E_ObjectAfterAlloc (void)
	see ZFObject::observerNotify

static zfidentity	E_ObjectBeforeDealloc (void)
	see ZFObject::observerNotify

static zfidentity	E_ObjectPropertyValueOnUpdate (void)
	see ZFObject::observerNotify

static zfidentity	E_ObjectPropertyValueOnReset (void)
	see ZFObject::observerNotify

Protected Types
typedef ZFObject	zfsuper
	class ref to super

typedef ZFCache	zfself
	class ref to self

Protected Types inherited from ZFObject
typedef _ZFP_Obj_Base	zfsuper
	class ref to super

typedef ZFObject	zfself
	class ref to self

Protected Member Functions
virtual void	cacheOnAdd (ZFObject *cache)
	see E_CacheOnAdd

virtual void	cacheOnRemove (ZFObject *cache)
	see E_CacheOnRemove

virtual void	objectOnInit (void)
	override this to init your object

virtual void	objectOnDealloc (void)
	override this to destroy your object

virtual void	objectOnDeallocPrepare (void)
	called before objectOnDealloc, safe to call virtual functions here

Protected Member Functions inherited from ZFObject
virtual void	objectInfoImpl (zfstring &ret)
	see objectInfo

virtual void	objectInfoImplAppend (zfstring &ret)
	see objectInfo

virtual zfidentity	objectHashImpl (void)
	see objectHash

virtual ZFCompareResult	objectCompareImpl (ZFObject *anotherObj)
	see objectCompare

virtual ZFCompareResult	objectCompareValueImpl (ZFObject *anotherObj)
	see objectCompareValue

virtual void	observerOnAdd (zfidentity eventId)
	called when add first observer

virtual void	observerOnRemove (zfidentity eventId)
	called when remove last observer

virtual void	observerOnEvent (const ZFArgs &zfargs)
	notified when observerNotify

virtual void	objectOnInitFinish (void)
	called after objectOnInit, safe to call virtual functions here

virtual void	objectOnRetain (void)
	called to retain object

virtual void	objectOnRelease (void)
	called to release object

virtual void	objectPropertyValueOnUpdate (const ZFProperty property, const void oldValue)
	see E_ObjectPropertyValueOnUpdate

virtual void	objectPropertyValueOnReset (const ZFProperty *property)
	see E_ObjectPropertyValueOnReset

Detailed Description

util object to hold ZFObject as cache

Member Function Documentation

◆ classData()

virtual const ZFClass * ZFCache::classData ( void )

inlinevirtual

get instance's class info

Reimplemented from ZFObject.

Reimplemented in ZFAudioCache, ZFIOCache, and ZFResCache.

◆ E_CacheOnAdd()

static zfidentity ZFCache::E_CacheOnAdd ( void )

static

see ZFObject::observerNotify

called when cache added, param0 is the added cache

◆ E_CacheOnRemove()

static zfidentity ZFCache::E_CacheOnRemove ( void )

static

see ZFObject::observerNotify

called when cache removed, param0 is the removed cache

◆ cacheAdd()

virtual void ZFCache::cacheAdd	(	const zfstring &	cacheKey,
		ZFObject *	cacheValue )

virtual

add cache

when cache exceeds cacheMaxSize, the oldest cache would be removed

◆ objectOnInit()

virtual void ZFCache::objectOnInit ( void )

protectedvirtual

override this to init your object

subclass must call superclass's objectOnInit before any other code if override
you may also declare objectOnInit with params like this:

zfclass Parent : ... {
    ...
protected:
    virtual void objectOnInit(void) {...};
};
zfclass Child : Parent {
protected:
    // override all parent's objectOnInit is also required,
    // because of function hiding of C++
    zfoverride
    virtual void objectOnInit(void) {
        zfsuper::objectOnInit();
    }
    // custom init entry
    virtual void objectOnInit(Params...) {
        // your extra init steps
        ...
    }
};

Warning: objectOnInit and objectOnDealloc is called as a virtual function, take good care of other virtual function call, use zfself::func() instead of this->func() if necessary, or use objectOnInitFinish/objectOnDeallocPrepare, or declare your own constructor with ZFOBJECT_DECLARE_WITH_CUSTOM_CTOR

Note: (ZFTAG_LIMITATION) due to limitations of C++, if your parent type declared objectOnInit with different params, and your child type want to override part of those objectOnInit, then your child type must also override all objectOnInit that parent declared, otherwise, some may be hidden; for objects that designed not to be allocated by user, you should use ZFOBJECT_PRIVATE_ALLOC, typically usage:
zfclass MyObject : zfextend ZFObject {

ZFOBJECT_DECLARE(MyObject, ZFObject)

ZFOBJECT_PRIVATE_ALLOC("should be created by MyObject::instanceForXxx only")

public:

static zfauto instanceForXxx(xxx) {

// can only be allocated by reflection

return zfself::ClassData()->newInstance();

}

};

static void func(void) {

// MyObject *obj = zfAlloc(MyObject); // would compile error

zfauto obj = MyObject::instanceForXxx(xxx); // OK

}

zfextend
#define zfextend
dummy macro shows class inherit from another
Definition ZFCoreTypeDef_ClassType.h:53

ZFOBJECT_DECLARE
#define ZFOBJECT_DECLARE(ChildClass, SuperClass,...)
necessary for every class inherit from ZFObject
Definition ZFObjectDeclare.h:126

ZFOBJECT_PRIVATE_ALLOC
#define ZFOBJECT_PRIVATE_ALLOC(...)
mark this object can not be allocated directly
Definition ZFObjectDeclare.h:245

ZFCache::ClassData
static const ZFClass * ClassData(void)
get class info
Definition ZFCache.h:18

ZFClass::newInstance
zfauto newInstance(void) const
make a new instance of ZFObject dynamically, which is described by ZFClass

zfauto
a ZFObject holder which would release content object automatically when destroyed
Definition zfautoFwd.h:34

Reimplemented from ZFObject.

◆ objectOnDealloc()

virtual void ZFCache::objectOnDealloc ( void )

protectedvirtual

override this to destroy your object

subclass must call superclass's objectOnDealloc after any other code if override
see objectOnInit for more info

Reimplemented from ZFObject.

◆ objectOnDeallocPrepare()

virtual void ZFCache::objectOnDeallocPrepare ( void )

protectedvirtual

called before objectOnDealloc, safe to call virtual functions here

usually used to cleanup resources attached to this object other than self's internal resources

Note: it's ensured safe to retain the object while deallocating, but it's not ensured objectOnDeallocPrepare would only called once for each instance

Reimplemented from ZFObject.

The documentation for this class was generated from the following file:

ZFCache.h

ZFFramework

Public Types

Public Member Functions

Static Public Member Functions

Protected Types

Protected Member Functions

Detailed Description

Member Function Documentation

◆ classData()

◆ E_CacheOnAdd()

◆ E_CacheOnRemove()

◆ cacheAdd()

◆ objectOnInit()

◆ objectOnDealloc()

◆ objectOnDeallocPrepare()