Meta information describing single attribute. More...

Inheritance diagram for iattr::IAttributeMetaInfo:

Collaboration diagram for iattr::IAttributeMetaInfo:

Public Types
enum	AttributeFlags { AF_OBLIGATORY = 1 << 0 , AF_NULLABLE = 1 << 1 , AF_SINGLE = 1 << 2 , AF_MULTIPLE = 1 << 3 , AF_VALUE = 1 << 4 , AF_READ_ONLY = 1 << 31 }
	Flags signalizing set of attribute properties. More...

Public Types inherited from istd::IChangeable
enum	ChangeFlags { CF_ICF_INTERNAL = 0 , CF_ALL_DATA , CF_ANY , CF_DESTROYING , CF_DELEGATED , CF_NO_UNDO }
	Data model change notification flags. More...

enum	SupportedOperations { SO_NONE = 0 , SO_OBSERVE = 1 << 0 , SO_COPY = 1 << 1 , SO_CLONE = 1 << 2 , SO_COMPARE = 1 << 3 , SO_RESET = 1 << 4 , SO_CHANGE_LOCK = 1 << 5 }
	Flags for supported operations. More...

enum	CompatibilityMode { CM_STRICT , CM_WITHOUT_REFS , CM_WITH_REFS , CM_CONVERT }
	Control how relationship betweeen objects are interpreted. More...

Public Member Functions
virtual QString	GetAttributeDescription () const =0
	Get description of this attribute.

virtual const iser::IObject *	GetAttributeDefaultValue () const =0
	Get default attribute value.

virtual QByteArray	GetAttributeTypeId () const =0
	Return attribute type ID.

virtual int	GetAttributeFlags () const =0
	Get flags of this attribute.

Public Member Functions inherited from istd::IChangeable
virtual int	GetSupportedOperations () const
	Get set of flags for supported operations.

virtual bool	CopyFrom (const IChangeable &object, CompatibilityMode mode=CM_WITHOUT_REFS)
	Copy this object from another one.

virtual bool	IsEqual (const IChangeable &object) const
	Compare this object with another object.

virtual std::unique_ptr< IChangeable >	CloneMe (CompatibilityMode mode=CM_WITHOUT_REFS) const
	Make a copy of this object.

virtual bool	ResetData (CompatibilityMode mode=CM_WITHOUT_REFS)
	Reset data to its default state.

virtual QMutex *	GetChangesLock () const
	Get mutex beeing locked during changes, if available.

virtual void	BeginChanges (const ChangeSet &changeSet)
	Starts the change transaction.

virtual void	EndChanges (const ChangeSet &changeSet)
	Ends the change transaction.

virtual void	BeginChangeGroup (const ChangeSet &changeSet)
	Starts group of changes.

virtual void	EndChangeGroup (const ChangeSet &changeSet)
	Ends group of changes.

Additional Inherited Members
Static Public Member Functions inherited from istd::IChangeable
static const ChangeSet &	GetNoChanges ()
	Get empty set of changes.

static const ChangeSet &	GetAnyChange ()
	Get anonymous change set.

static const ChangeSet &	GetAllChanges ()
	Get anonymous change set.

static const ChangeSet &	GetDelegatedChanges ()
	Get delegated change set.

Protected Member Functions inherited from istd::IChangeable
virtual void	OnBeginChanges ()
	Callback function for begin change event.

virtual void	OnEndChanges (const ChangeSet &changeSet)
	Callback function for end change event.

Detailed Description

Meta information describing single attribute.

Definition at line 20 of file IAttributeMetaInfo.h.

Member Enumeration Documentation

Flags signalizing set of attribute properties.

Enumerator
AF_OBLIGATORY	Active if user declared this attribute as obligatory.
AF_NULLABLE	Active if this attribute can be unset (null). Please note, that sometimes obligatory attributes can be nullable - for example for simple types default value can be taken.
AF_SINGLE	Attribute is single type.
AF_MULTIPLE	Attribute is multiple type.
AF_VALUE	Attribute is simple value type.
AF_READ_ONLY	Attribute is simple value type.