Qt Jambi Home

com.trolltech.qt.sql
Class QSqlRelation

java.lang.Object
  extended by com.trolltech.qt.QSignalEmitter
      extended by com.trolltech.qt.QtJambiObject
          extended by com.trolltech.qt.sql.QSqlRelation
All Implemented Interfaces:
QtJambiInterface

public class QSqlRelation
extends QtJambiObject

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, Table Model Example

Nested Class Summary
 
Nested classes/interfaces inherited from class com.trolltech.qt.QSignalEmitter
QSignalEmitter.AbstractSignal, QSignalEmitter.Signal0, QSignalEmitter.Signal1<A>, QSignalEmitter.Signal2<A,B>, QSignalEmitter.Signal3<A,B,C>, QSignalEmitter.Signal4<A,B,C,D>, QSignalEmitter.Signal5<A,B,C,D,E>, QSignalEmitter.Signal6<A,B,C,D,E,F>, QSignalEmitter.Signal7<A,B,C,D,E,F,G>, QSignalEmitter.Signal8<A,B,C,D,E,F,G,H>, QSignalEmitter.Signal9<A,B,C,D,E,F,G,H,I>
 
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 aTableName is the SQL table name to which a foreign key refers, indexCol is the foreign key, and displayCol is the field that should be presented to the user.
 
Method Summary
 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 function 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, 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
clone, equals, 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 aTableName is the SQL table name to which a foreign key refers, indexCol is the foreign key, and displayCol is the field that should be presented to the user.

See Also:
tableName, indexColumn, 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 function returns the QSqlRelation instance pointed to by nativePointer

Parameters:
nativePointer - the QNativePointer of which object should be returned.

nativePointerArray

public static QNativePointer nativePointerArray(QSqlRelation[] array)
This function returns a QNativePointer that is pointing to the specified QSqlRelation array.

Parameters:
array - the array that the returned pointer will point to.
Returns:
a QNativePointer that is pointing to the specified array.

Qt Jambi Home