The iObjectProvider class is base interface for work with database objects. Using on database writers and database caches. More...

#include <iobjectprovider.h>

Inheritance diagram for QH::iObjectProvider:

Collaboration diagram for QH::iObjectProvider:

Public Member Functions
template<class TYPE>
QSharedPointer< TYPE >	getObject (const TYPE &templateVal)
	getObject this method return a strong pointer to DBObject created by select method of the template object (templateVal).
QSharedPointer< PKG::DBObject >	getObjectRaw (const PKG::DBObject &templateVal)
	getObjectRaw This method return object without test object type.
virtual bool	getAllObjects (const PKG::DBObject &templateObject, QList< QSharedPointer< PKG::DBObject > > &result)=0
	getAllObjects This method execute a select method of the templateObject and return list of all selected from databaes or cache objects
virtual bool	replaceObject (const QSharedPointer< PKG::DBObject > &saveObject, bool wait)=0
	replaceObject This method execute a replace method of the saveObject and insert or save if not exists, all changes into database.
virtual bool	updateObject (const QSharedPointer< PKG::DBObject > &saveObject, bool wait)=0
	updateObject This method execute a update method of the saveObject and save all changes into database.
virtual bool	insertObject (const QSharedPointer< PKG::DBObject > &saveObject, bool wait, const QWeakPointer< unsigned int > &autoincrementIdResult)=0
	insertObject This method execute a insert method of the saveObject and insert it into database.
virtual bool	deleteObject (const QSharedPointer< PKG::DBObject > &obj, bool wait)=0
	deleteObject This method execute a delete method of obj and remove current object from database.
virtual void	setSQLSources (const QStringList &list)=0
	setSQLSources This method set sql sources for deployed database.
virtual bool	doQuery (const QString &query, const QVariantMap &bindValues={}, bool wait=false, QSqlQuery *result=nullptr) const =0
	doQuery This method execute a query in this database.
virtual bool	doSql (const QString &sqlFile, bool wait=true) const =0
	doSql This method execute a query in this database.

Detailed Description

The iObjectProvider class is base interface for work with database objects. Using on database writers and database caches.

Definition at line 25 of file iobjectprovider.h.

Member Function Documentation

◆ deleteObject()

virtual bool QH::iObjectProvider::deleteObject	(	const QSharedPointer< PKG::DBObject > &	obj,
		bool	wait )

pure virtual

deleteObject This method execute a delete method of obj and remove current object from database.

Parameters

obj	This is object for removing.
wait	This arguments force current thread wait for the function finishing.

Returns: true if object is removed successful else false.

Implemented in QH::SqlDBWriter.

◆ doQuery()

virtual bool QH::iObjectProvider::doQuery	(	const QString &	query,
		const QVariantMap &	bindValues = {},
		bool	wait = false,
		QSqlQuery *	result = nullptr ) const

pure virtual

doQuery This method execute a query in this database.

Parameters

query	This is query that will be executed.
bindValues	This is values that need to bind before excute query.
result	This is query result value.

Warning: The result works onlt on await mode. Set the wait param to true.

Returns: true if the query finished successful

Implemented in QH::ISqlDB, and QH::SqlDBWriter.

◆ doSql()

virtual bool QH::iObjectProvider::doSql	(	const QString &	sqlFile,
		bool	wait = true ) const

pure virtual

doSql This method execute a query in this database.

Parameters

sqlFile This is sql file that will be executed.

Returns: true if the query finished successful

Implemented in QH::ISqlDB, and QH::SqlDBWriter.

◆ getAllObjects()

virtual bool QH::iObjectProvider::getAllObjects	(	const PKG::DBObject &	templateObject,
		QList< QSharedPointer< PKG::DBObject > > &	result )

pure virtual

getAllObjects This method execute a select method of the templateObject and return list of all selected from databaes or cache objects

Parameters

templateObject	This is template object for prepare a select request.
result	This is return value, list of selected objects.

Returns: true if objects have in db else false.

Implemented in QH::SqlDBWriter.

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◆ getObject()

template<class TYPE>

QSharedPointer< TYPE > QH::iObjectProvider::getObject ( const TYPE & templateVal )

inline

getObject this method return a strong pointer to DBObject created by select method of the template object (templateVal).

Parameters

templateVal This is template object with a select data base request.

Note: This method return a database object with a type as a type of templateVal object. If you want to get a object of C class but the database contains object of D class then you get object with the C class and this object will be saved to cache. So next time if you want get a object D class you get a object with C class. This is possible only when the objects have the same id. that is, classes C and D are no different except for a command. So this behavior should not lead to errors.; The type of input templateVal object must be child type of the DBObject class.

Returns: return strong pointer to DBObject ot nullptr id object not exits.

Definition at line 39 of file iobjectprovider.h.

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◆ getObjectRaw()

QSharedPointer< DBObject > QH::iObjectProvider::getObjectRaw ( const PKG::DBObject & templateVal )

getObjectRaw This method return object without test object type.

Note: If you want get object with check object type use getObject method.

Parameters

templateVal This is template object with request to database.

Returns: The database object pointer (not casted).

Definition at line 13 of file iobjectprovider.cpp.

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◆ insertObject()

virtual bool QH::iObjectProvider::insertObject	(	const QSharedPointer< PKG::DBObject > &	saveObject,
		bool	wait,
		const QWeakPointer< unsigned int > &	autoincrementIdResult )

pure virtual

insertObject This method execute a insert method of the saveObject and insert it into database.

Note: This method insert object into database only. IF object is exits in the database then this method return false.

Parameters

saveObject	This is object for inserting.
wait	This arguments force current thread wait for the function finishing.
autoincrementIdResult	is id of the insert query to the Table with autoincrement id field.

Returns: true if objects is saved successful else false. Note return two value. First is boolean result, second is id of inserted value.

Note: id will be returned only for the autoincement records.

Implemented in QH::SqlDBWriter.

◆ replaceObject()

virtual bool QH::iObjectProvider::replaceObject	(	const QSharedPointer< PKG::DBObject > &	saveObject,
		bool	wait )

pure virtual

replaceObject This method execute a replace method of the saveObject and insert or save if not exists, all changes into database.

Note: This method update object in the database only. If you try update not exists object then this method return false.

Parameters

saveObject	This is object for updating.
wait	This arguments force current thread wait for the function finishing.

Returns: true if objects is updated successful else false.

Implemented in QH::SqlDBWriter.

◆ setSQLSources()

virtual void QH::iObjectProvider::setSQLSources ( const QStringList & list )

pure virtual

setSQLSources This method set sql sources for deployed database.

Parameters

list	This is list of sql files with database sources.

For more information about sql sources see the DataBaseNode::SQLSources method.

Implemented in QH::ISqlDB, and QH::SqlDBWriter.

◆ updateObject()

virtual bool QH::iObjectProvider::updateObject	(	const QSharedPointer< PKG::DBObject > &	saveObject,
		bool	wait )

pure virtual

updateObject This method execute a update method of the saveObject and save all changes into database.

Note: This method update object in the database only.

Warning: This method do not guarantee that return false if The updated object is not exist.

Parameters

saveObject	This is object for updating.
wait	This arguments force current thread wait for the function finishing.

Returns: true if objects is updated successful else false.

Implemented in QH::SqlDBWriter.

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

src/public/iobjectprovider.h
src/public/iobjectprovider.cpp

Public Member Functions

Detailed Description

Member Function Documentation

◆ deleteObject()

◆ doQuery()

◆ doSql()

◆ getAllObjects()

◆ getObject()

◆ getObjectRaw()

◆ insertObject()

◆ replaceObject()

◆ setSQLSources()

◆ updateObject()