ZFState Class Reference

util to store local state More...

#include <ZFState.h>

Inheritance diagram for ZFState:

Public Types
enum
Public Types inherited from ZFObject
enum

Public Member Functions
virtual const ZFClass *	classData (void)
	get instance's class info
virtual ZFPathInfo &	stateFile ()
	path to store state file
virtual void	stateFile (ZFPathInfo const &propertyValue)
	see stateFile
virtual ZFPathInfo	stateFileFixed ()
	util to returon stateFile or default setting if not specified
virtual zfbool	ready ()
	whether internal state has been loaded
virtual zfautoT< ZFTaskId >	load (const ZFListener &callback)
	load and add callback to queue which would called if ready
virtual zfautoT< ZFTaskId >	save (const ZFListener &callback)
	save and call callback when save complete
virtual void	saveImmediately ()
	try to save immediately, use only if necessary
virtual void	set (const zfstring &key, const zfstring &value, zftimet expire=(0))
	set state
virtual void	remove (const zfstring &key)
	remove state
virtual void	removeAll ()
	remove all state
virtual zfstring	get (const zfstring &key)
	get state or null if not ready
virtual zfautoT< ZFTaskId >	getAsync (const zfstring &key, const ZFListener &callback)
	util to get with load
virtual void	update (const zfstring &key, zftimet expire=(0))
	update cache time if exist
virtual zfautoT< ZFMap >	getAll ()
	return a copy of all state, for debug use only
virtual void	getAllT (ZFCoreArray< zfstring > &keys, ZFCoreArray< zfstring > &values)
	return a copy of all state, for debug use 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 ZFState *	instance ()
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 ZFState	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	objectOnInit (void)
	override this to init your object
virtual void	objectOnDealloc (void)
	override this to destroy your object
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	objectOnDeallocPrepare (void)
	called before objectOnDealloc, 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

Static Protected Member Functions
static void	instance (ZFState *param0)
	see instance

Detailed Description

util to store local state

Member Function Documentation

classData()

virtual const ZFClass * ZFState::classData ( void )

inlinevirtual

get instance's class info

Reimplemented from ZFObject.

instance()

static ZFState * ZFState::instance ( )

static

access singleton instance

stateFile()

virtual ZFPathInfo & ZFState::stateFile ( )

inlinevirtual

path to store state file

when invalid, ‘ZFPathInfo(ZFPathType_settingPath, 'ZFState’)` would be used
note the old file won't be deleted automatically when this config changed, you should delete it manually if necessary
note changing this would cause a complete state reload, merging existing state

ready()

virtual zfbool ZFState::ready ( )

virtual

whether internal state has been loaded

by default, internal state would be loaded when set or getAsync called, use load to explicit load

set()

virtual void ZFState::set ( const zfstring & key, const zfstring & value, zftimet expire = (0) )

virtual

set state

the optional expire:

• 0 : no expire, always keep the state unless overrided or removed
• >0 : with specified expire time

getAsync()

virtual zfautoT< ZFTaskId > ZFState::getAsync ( const zfstring & key, const ZFListener & callback )

virtual

util to get with load

callback's param0 would be the result value if exists

objectOnInit()

virtual void ZFState::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
}

Reimplemented from ZFObject.

objectOnDealloc()

virtual void ZFState::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.

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

• ZFState.h