com.trolltech.qt.sql
Class QSqlRelation

java.lang.Object
  com.trolltech.qt.QSignalEmitter
      com.trolltech.qt.QtJambiObject
          com.trolltech.qt.sql.QSqlRelation

All Implemented Interfaces:

QtJambiInterface, java.lang.Cloneable

public class QSqlRelation
extends QtJambiObject
implements java.lang.Cloneable

The QSqlRelation class stores information about an SQL foreign key. QSqlRelation is a helper class for QSqlRelationalTableModel. See QSqlRelationalTableModel::setRelation() and QSqlRelationalTableModel::relation() for details.

See also:

QSqlRelationalTableModel, QSqlRelationalDelegate, and Relational Table Model Example.

Nested Class Summary

Nested classes/interfaces inherited from class com.trolltech.qt.QSignalEmitter

QSignalEmitter.Signal0, QSignalEmitter.Signal1, QSignalEmitter.Signal2, QSignalEmitter.Signal3, QSignalEmitter.Signal4, QSignalEmitter.Signal5, QSignalEmitter.Signal6, QSignalEmitter.Signal7, QSignalEmitter.Signal8, QSignalEmitter.Signal9

Constructor Summary

QSqlRelation()
Constructs an invalid QSqlRelation object.

QSqlRelation(java.lang.String aTableName, java.lang.String indexCol, java.lang.String displayCol)
Constructs a QSqlRelation object, where tableName is the SQL table name to which a foreign key refers, indexColumn is the foreign key, and displayColumn is the field that should be presented to the user.

Method Summary

QSqlRelation	clone() This method is reimplemented for internal reasons
java.lang.String	displayColumn() Returns the column from table tableName() that should be presented to the user instead of a foreign key.
static QSqlRelation	fromNativePointer(QNativePointer nativePointer) This method returns the QSqlRelation instance pointed to by nativePointer.
java.lang.String	indexColumn() Returns the index column from table tableName() to which a foreign key refers.
boolean	isValid() Returns true if the QSqlRelation object is valid; otherwise returns false.
static QNativePointer	nativePointerArray(QSqlRelation[] array) This function returns a QNativePointer that is pointing to the specified QSqlRelation array.
java.lang.String	tableName() Returns the name of the table to which a foreign key refers.

Methods inherited from class com.trolltech.qt.QtJambiObject

dispose, disposed, equals, finalize, reassignNativeResources, tr, tr, tr

Methods inherited from class com.trolltech.qt.QSignalEmitter

blockSignals, disconnect, disconnect, signalsBlocked, signalSender, thread

Methods inherited from class java.lang.Object

getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface com.trolltech.qt.QtJambiInterface

disableGarbageCollection, nativeId, nativePointer, reenableGarbageCollection, setJavaOwnership

Constructor Detail

QSqlRelation

public QSqlRelation()

Constructs an invalid QSqlRelation object.

For such an object, the tableName(), indexColumn(), and displayColumn() functions return an empty string.

See also:

isValid().

QSqlRelation

public QSqlRelation(java.lang.String aTableName,
                    java.lang.String indexCol,
                    java.lang.String displayCol)

Constructs a QSqlRelation object, where tableName is the SQL table name to which a foreign key refers, indexColumn is the foreign key, and displayColumn is the field that should be presented to the user.

See also:

tableName(), indexColumn(), and displayColumn().

Method Detail

displayColumn

public final java.lang.String displayColumn()

Returns the column from table tableName() that should be presented to the user instead of a foreign key.

indexColumn

public final java.lang.String indexColumn()

Returns the index column from table tableName() to which a foreign key refers.

isValid

public final boolean isValid()

Returns true if the QSqlRelation object is valid; otherwise returns false.

tableName

public final java.lang.String tableName()

Returns the name of the table to which a foreign key refers.

fromNativePointer

public static QSqlRelation fromNativePointer(QNativePointer nativePointer)

This method returns the QSqlRelation instance pointed to by nativePointer.

nativePointerArray

public static QNativePointer nativePointerArray(QSqlRelation[] array)

This function returns a QNativePointer that is pointing to the specified QSqlRelation array.

clone

public QSqlRelation clone()

This method is reimplemented for internal reasons

Overrides:

clone in class java.lang.Object