QRelation Struct Reference

Public Functions
void	clear ()
void	clearDictionary ()
void	init (QSqlRelationalTableModel *parent, const QSqlRelation &relation)
bool	isDictionaryInitialized ()
bool	isValid ()
void	populateDictionary ()
void	populateModel ()
	QRelation ()

Public Variables
QHash< QString, QVariant >	dictionary
QRelatedTableModel *	model
QSqlRelation	rel

Properties
bool	m_dictInitialized
QSqlRelationalTableModel *	m_parent

Detailed Description

Definition at line 145 of file qsqlrelationaltablemodel.cpp.

Constructors and Destructors

QRelation()

QRelation::QRelation ( )

inline

Definition at line 148 of file qsqlrelationaltablemodel.cpp.

: model(0),m_parent(0),m_dictInitialized(false){}

Functions

clear()

void QRelation::clear

(

void

)

Definition at line 242 of file qsqlrelationaltablemodel.cpp.

Referenced by QSqlRelationalTableModelPrivate::clearChanges(), and QRelation().

{
    delete model;
    model = 0;
    clearDictionary();
}

clearDictionary()

void QRelation::clearDictionary

(

)

Definition at line 236 of file qsqlrelationaltablemodel.cpp.

Referenced by clear(), QRelation(), and QRelatedTableModel::select().

{
    dictionary.clear();
    m_dictInitialized = false;
}

init()

void QRelation::init	(	QSqlRelationalTableModel *	parent,
		const QSqlRelation &	relation
	)

Definition at line 183 of file qsqlrelationaltablemodel.cpp.

Referenced by QRelation().

{
    Q_ASSERT(parent != NULL);
    m_parent = parent;
    rel = relation;
}

isDictionaryInitialized()

bool QRelation::isDictionaryInitialized

(

)

Definition at line 203 of file qsqlrelationaltablemodel.cpp.

Referenced by QSqlRelationalTableModel::data(), QRelation(), and QSqlRelationalTableModel::setData().

{
    return m_dictInitialized;
}

isValid()

bool QRelation::isValid

(

)

Definition at line 249 of file qsqlrelationaltablemodel.cpp.

Referenced by populateDictionary(), populateModel(), QRelation(), and QSqlRelationalTableModel::relationModel().

{
    return (rel.isValid() && m_parent != NULL);
}

populateDictionary()

void QRelation::populateDictionary

(

)

Definition at line 208 of file qsqlrelationaltablemodel.cpp.

Referenced by QSqlRelationalTableModel::data(), QRelation(), QRelatedTableModel::select(), and QSqlRelationalTableModel::setData().

{
    if (!isValid())
        return;

    if (model ==  NULL)
        populateModel();

    QSqlRecord record;
    QString indexColumn;
    QString displayColumn;
    for (int i=0; i < model->rowCount(); ++i) {
        record = model->record(i);

        indexColumn = rel.indexColumn();
        if (m_parent->database().driver()->isIdentifierEscaped(indexColumn, QSqlDriver::FieldName))
            indexColumn = m_parent->database().driver()->stripDelimiters(indexColumn, QSqlDriver::FieldName);

        displayColumn = rel.displayColumn();
        if (m_parent->database().driver()->isIdentifierEscaped(displayColumn, QSqlDriver::FieldName))
            displayColumn = m_parent->database().driver()->stripDelimiters(displayColumn, QSqlDriver::FieldName);

        dictionary[record.field(indexColumn).value().toString()] =
            record.field(displayColumn).value();
    }
    m_dictInitialized = true;
}

populateModel()

void QRelation::populateModel

(

)

Definition at line 190 of file qsqlrelationaltablemodel.cpp.

Referenced by populateDictionary(), QRelation(), and QSqlRelationalTableModel::relationModel().

{
    if (!isValid())
        return;
    Q_ASSERT(m_parent != NULL);

    if (!model) {
        model = new QRelatedTableModel(this, m_parent, m_parent->database());
        model->setTable(rel.tableName());
        model->select();
    }
}

Properties

dictionary

QHash<QString, QVariant> QRelation::dictionary

Definition at line 162 of file qsqlrelationaltablemodel.cpp.

Referenced by clearDictionary(), QSqlRelationalTableModel::data(), populateDictionary(), and QSqlRelationalTableModel::setData().

m_dictInitialized

bool QRelation::m_dictInitialized

private

Definition at line 166 of file qsqlrelationaltablemodel.cpp.

Referenced by clearDictionary(), isDictionaryInitialized(), and populateDictionary().

m_parent

QSqlRelationalTableModel* QRelation::m_parent

private

Definition at line 165 of file qsqlrelationaltablemodel.cpp.

Referenced by init(), isValid(), populateDictionary(), and populateModel().

model

QRelatedTableModel* QRelation::model

Definition at line 161 of file qsqlrelationaltablemodel.cpp.

Referenced by clear(), populateDictionary(), populateModel(), and QSqlRelationalTableModel::relationModel().

rel

QSqlRelation QRelation::rel

Definition at line 160 of file qsqlrelationaltablemodel.cpp.

Referenced by init(), isValid(), populateDictionary(), and populateModel().

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

• /src/sql/models/qsqlrelationaltablemodel.cpp