QgsQueryBuilder Class Reference

Query Builder for layers. More...

#include <qgsquerybuilder.h>

Public Slots
void	accept ()
void	reject ()
void	clear ()
void	on_btnEqual_clicked ()
void	on_btnLessThan_clicked ()
void	on_btnGreaterThan_clicked ()
void	on_btnPct_clicked ()
void	on_btnIn_clicked ()
void	on_btnNotIn_clicked ()
void	on_btnLike_clicked ()
void	on_btnILike_clicked ()
QString	sql ()
void	setSql (QString sqlStatement)
void	on_lstFields_clicked (const QModelIndex &index)
void	on_lstFields_doubleClicked (const QModelIndex &index)
void	on_lstValues_doubleClicked (const QModelIndex &index)
void	on_btnLessEqual_clicked ()
void	on_btnGreaterEqual_clicked ()
void	on_btnNotEqual_clicked ()
void	on_btnAnd_clicked ()
void	on_btnNot_clicked ()
void	on_btnOr_clicked ()
void	on_buttonBox_helpRequested ()
void	test ()
void	on_btnGetAllValues_clicked ()
void	on_btnSampleValues_clicked ()
void	setDatasourceDescription (QString uri)

Public Member Functions
	QgsQueryBuilder (QgsVectorLayer *layer, QWidget *parent=0, Qt::WindowFlags fl=QgisGui::ModalDialogFlags)
	~QgsQueryBuilder ()
void	showEvent (QShowEvent *event)

Detailed Description

Query Builder for layers.

The query builder allows interactive creation of a SQL for limiting the features displayed in a database layer. The fields in the table are displayed and sample values (or all values) can be viewed to aid in constructing the query. A test function returns the number of features that will be returned.

Constructor & Destructor Documentation

QgsQueryBuilder::QgsQueryBuilder	(	QgsVectorLayer *	layer,
		QWidget *	parent = 0,
		Qt::WindowFlags	fl = QgisGui::ModalDialogFlags
	)

This constructor is used when the query builder is called from the vector layer properties dialog

Parameters

layer	existing vector layer
parent	Parent widget
fl	dialog flags

QgsQueryBuilder::~QgsQueryBuilder

(

)

Member Function Documentation

void QgsQueryBuilder::accept ( )

slot

void QgsQueryBuilder::clear ( )

slot

void QgsQueryBuilder::on_btnAnd_clicked ( )

slot

void QgsQueryBuilder::on_btnEqual_clicked ( )

slot

void QgsQueryBuilder::on_btnGetAllValues_clicked ( )

slot

Get all distinct values for the field. Values are inserted into the value list box

void QgsQueryBuilder::on_btnGreaterEqual_clicked ( )

slot

void QgsQueryBuilder::on_btnGreaterThan_clicked ( )

slot

void QgsQueryBuilder::on_btnILike_clicked ( )

slot

void QgsQueryBuilder::on_btnIn_clicked ( )

slot

void QgsQueryBuilder::on_btnLessEqual_clicked ( )

slot

void QgsQueryBuilder::on_btnLessThan_clicked ( )

slot

void QgsQueryBuilder::on_btnLike_clicked ( )

slot

void QgsQueryBuilder::on_btnNot_clicked ( )

slot

void QgsQueryBuilder::on_btnNotEqual_clicked ( )

slot

void QgsQueryBuilder::on_btnNotIn_clicked ( )

slot

void QgsQueryBuilder::on_btnOr_clicked ( )

slot

void QgsQueryBuilder::on_btnPct_clicked ( )

slot

void QgsQueryBuilder::on_btnSampleValues_clicked ( )

slot

Get sample distinct values for the selected field. The sample size is limited to an arbitrary value (currently set to 25). The values are inserted into the values list box.

void QgsQueryBuilder::on_buttonBox_helpRequested ( )

inlineslot

void QgsQueryBuilder::on_lstFields_clicked ( const QModelIndex &  index )

slot

void QgsQueryBuilder::on_lstFields_doubleClicked ( const QModelIndex &  index )

slot

void QgsQueryBuilder::on_lstValues_doubleClicked ( const QModelIndex &  index )

slot

void QgsQueryBuilder::reject ( )

slot

void QgsQueryBuilder::setDatasourceDescription ( QString  uri )

slot

void QgsQueryBuilder::setSql ( QString  sqlStatement )

slot

void QgsQueryBuilder::showEvent

(

QShowEvent *

event

)

QString QgsQueryBuilder::sql ( )

slot

void QgsQueryBuilder::test ( )

slot

Test the constructed sql statement to see if the database likes it. The number of rows that would be returned is displayed in a message box. The test uses a "select count(*) from ..." query to test the SQL statement.

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

• /tmp/buildd/qgis-2.6.0+wheezy1/src/gui/qgsquerybuilder.h
• /tmp/buildd/qgis-2.6.0+wheezy1/src/gui/qgsquerybuilder.cpp