com.trolltech.qt.sql
Class QSqlDriver.DriverFeature

java.lang.Object
  extended by java.lang.Enum
      extended by com.trolltech.qt.sql.QSqlDriver.DriverFeature
All Implemented Interfaces:
QtEnumerator, java.io.Serializable, java.lang.Comparable
Enclosing class:
QSqlDriver

public static final class QSqlDriver.DriverFeature
extends java.lang.Enum
implements QtEnumerator

This enum contains a list of features a driver might support. Use hasFeature() to query whether a feature is supported or not. More information about supported features can be found in the Qt SQL driver documentation.

See also:
hasFeature().

See Also:
Serialized Form

Field Summary
static QSqlDriver.DriverFeature BatchOperations
          Whether the driver supports batched operations, see QSqlQuery::execBatch()
static QSqlDriver.DriverFeature BLOB
          Whether the driver supports Binary Large Object fields.
static QSqlDriver.DriverFeature EventNotifications
          Whether the driver supports database event notifications.
static QSqlDriver.DriverFeature FinishQuery
          Whether the driver can do any low-level resource cleanup when QSqlQuery::finish() is called.
static QSqlDriver.DriverFeature LastInsertId
          Whether the driver supports returning the Id of the last touched row.
static QSqlDriver.DriverFeature LowPrecisionNumbers
          Whether the driver allows fetching numerical values with low precision.
static QSqlDriver.DriverFeature MultipleResultSets
          Whether the driver can access multiple result sets returned from batched statements or stored procedures.
static QSqlDriver.DriverFeature NamedPlaceholders
          Whether the driver supports the use of named placeholders.
static QSqlDriver.DriverFeature PositionalPlaceholders
          Whether the driver supports the use of positional placeholders.
static QSqlDriver.DriverFeature PreparedQueries
          Whether the driver supports prepared query execution.
static QSqlDriver.DriverFeature QuerySize
          Whether the database is capable of reporting the size of a query.
static QSqlDriver.DriverFeature SimpleLocking
          Whether the driver disallows a write lock on a table while other queries have a read lock on it.
static QSqlDriver.DriverFeature Transactions
          Whether the driver supports SQL transactions.
static QSqlDriver.DriverFeature Unicode
          Whether the driver supports Unicode strings if the database server does.
 
Method Summary
static QSqlDriver.DriverFeature resolve(int value)
          Returns the QSqlDriver$DriverFeature constant with the specified int.
 int value()
          This function should return an integer value for the enum values of the enumeration that implements this interface.
static QSqlDriver.DriverFeature valueOf(java.lang.String name)
           
static QSqlDriver.DriverFeature[] values()
           
 
Methods inherited from class java.lang.Enum
clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf
 
Methods inherited from class java.lang.Object
getClass, notify, notifyAll, wait, wait, wait
 

Field Detail

Transactions

public static final QSqlDriver.DriverFeature Transactions
Whether the driver supports SQL transactions.


QuerySize

public static final QSqlDriver.DriverFeature QuerySize
Whether the database is capable of reporting the size of a query. Note that some databases do not support returning the size (i.e. number of rows returned) of a query, in which case QSqlQuery::size() will return -1.


BLOB

public static final QSqlDriver.DriverFeature BLOB
Whether the driver supports Binary Large Object fields.


Unicode

public static final QSqlDriver.DriverFeature Unicode
Whether the driver supports Unicode strings if the database server does.


PreparedQueries

public static final QSqlDriver.DriverFeature PreparedQueries
Whether the driver supports prepared query execution.


NamedPlaceholders

public static final QSqlDriver.DriverFeature NamedPlaceholders
Whether the driver supports the use of named placeholders.


PositionalPlaceholders

public static final QSqlDriver.DriverFeature PositionalPlaceholders
Whether the driver supports the use of positional placeholders.


LastInsertId

public static final QSqlDriver.DriverFeature LastInsertId
Whether the driver supports returning the Id of the last touched row.


BatchOperations

public static final QSqlDriver.DriverFeature BatchOperations
Whether the driver supports batched operations, see QSqlQuery::execBatch()


SimpleLocking

public static final QSqlDriver.DriverFeature SimpleLocking
Whether the driver disallows a write lock on a table while other queries have a read lock on it.


LowPrecisionNumbers

public static final QSqlDriver.DriverFeature LowPrecisionNumbers
Whether the driver allows fetching numerical values with low precision.


EventNotifications

public static final QSqlDriver.DriverFeature EventNotifications
Whether the driver supports database event notifications.


FinishQuery

public static final QSqlDriver.DriverFeature FinishQuery
Whether the driver can do any low-level resource cleanup when QSqlQuery::finish() is called.


MultipleResultSets

public static final QSqlDriver.DriverFeature MultipleResultSets
Whether the driver can access multiple result sets returned from batched statements or stored procedures.

Method Detail

values

public static QSqlDriver.DriverFeature[] values()

valueOf

public static QSqlDriver.DriverFeature valueOf(java.lang.String name)

value

public int value()
This function should return an integer value for the enum values of the enumeration that implements this interface.

Specified by:
value in interface QtEnumerator

resolve

public static QSqlDriver.DriverFeature resolve(int value)
Returns the QSqlDriver$DriverFeature constant with the specified int.