Data.SqlExpr.TSQLConnection Methods

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InheritedProtected

_AddRef	protected	Called when an application uses a component interface.
_Release	protected	Called when an application releases a component interface.
AddConnectNotification	public	Registers a listener object that uses the connection component.
AfterConstruction	public	Responds after the last constructor has executed.
Assign	public	Copies the contents of another similar object.
AssignTo	protected	Copies the properties of an object to a destination object.
AsyncSchedule	protected	Schedules asynch method calls.
BeforeDestruction	public	Performs any necessary actions before the first destructor is called.
BeginInvoke	public	Performs an asynchronous call to the method specified by either AProc or AFunc.
BeginTransaction	public	Initiates a new transaction in the associated database.
CanObserve	protected	Checks if a component can be observed by a particular observer.
ChangeName	protected	Sets the private, internal storage for the Name property to the string passed in NewName.
CheckConnection	protected	Performs connection-specific actions according to the given flag.
CheckDisconnect	protected	Checks whether it is possible to close the SQL connection, and terminates if so.
CheckDisposed	protected	This method is deprecated.
ClassInfo	public	Returns a pointer to the run-time type information (RTTI) table for the object type.
ClassName	public	Returns a string indicating the type of the object instance (as opposed to the type of the variable passed as an argument).
ClassNameIs	public	Determines whether an object is of a specific type.
ClassParent	public	Returns the type of the immediate ancestor of a class.
ClassType	public	Returns the class reference for the object's class.
CleanupInstance	public	Performs finalization on long strings, variants, and interface variables within a class.
CloneConnection	public	Returns a copy of the SQL connection object.
Close	public	Closes the connection.
CloseDataSets	public	Closes all datasets associated with the SQL connection object component without disconnecting from the database.
Commit (deprecated)	public	Commits an open transaction.
CommitFreeAndNil	public	Commits an open transaction.
ConnectionOptions	protected	Sets connection options.
Create	public	Creates and initializes an instance TSQLConnection.
DefaultHandler	public	Provides the interface for a method that processes message records.
DefineProperties	protected	Used internally by the streaming system.
Destroy	public	Destroys the SQL connection object.
DestroyComponents	public	Destroys all owned components.
Destroying	public	Indicates that the component and its owned components are about to be destroyed.
Dispatch	public	Calls message-handling methods for the object, based on the contents of the Message parameter.
DisposeOf (deprecated)	public	DisposeOf forces the execution of the destructor code in an object.
DoConnect	protected	Provides the interface for a method that opens a connection.
DoDisconnect	protected	Provides the interface for a method that terminates the connection.
EndFunctionInvoke	public	Blocks the caller until the specified ASyncResult completes.
EndInvoke	public	Blocks the caller until the specified ASyncResult completes.
Equals	public	Checks whether the current instance and the Obj parameter are equal.
Execute	public	Executes an SQL command on the server.
ExecuteAction	public	Executes an action.
ExecuteDirect	public	Executes an SQL command that does not include parameters.
FieldAddress	public	Returns the address of a published object field.
FindComponent	public	Indicates whether a given component is owned by the component.
Free	public	Destroys an object and frees its associated memory, if necessary.
FreeInstance	public	Deallocates memory allocated by a previous call to the NewInstance method.
FreeNotification	public	Ensures that AComponent is notified that the component is going to be destroyed.
FreeOnRelease	public	Frees the interface reference for components that were created from COM classes.
GetChildOwner	protected	Returns the owner of a child component being read from a stream.
GetChildParent	protected	Returns the parent or, if there is no parent, returns the owner of a child component being read from a stream.
GetChildren	protected	Enumerates all child components.
GetCommandTypes	public	Populates a string list with command types.
GetConnected	protected	Returns the value of the Connected property.
GetDataSet	protected	Returns a dataset, given its index in the DataSets property array.
GetDataSetCount	protected	Returns the value of the DataSetCount property.
GetDefaultSchemaName	public	Returns the default schema name of the current object.
GetDeltaStreams	protected	Retrieves a list of streams representing the differences (deltas) between the current state of a component and a previously saved state.
GetDisposed	protected	Getter for the Disposed property.
GetEnumerator	public	Returns a TComponent enumerator.
GetFieldNames	public	Populates a string list with the names of fields in a table.
GetHashCode	public	Returns an integer containing the hash code.
GetIDsOfNames	protected	Maps a single member and an optional set of argument names to a corresponding set of integer dispatch identifiers (dispIDs).
GetIndexNames	public	Populates a string list with the names of indexes on a table.
GetInterface	public	Retrieves a specified interface.
GetInterfaceEntry	public	Returns the entry for a specific interface implemented in a class.
GetInterfaceTable	public	Returns a pointer to a structure containing all of the interfaces implemented by a given class.
GetLoginUsername	public	Returns the user name logged in on the current connection.
GetNamePath	public	Returns a string used by the Object Inspector.
GetObservers	protected	Getter of Observers.
GetOwner	protected	Returns the owner of a component.
GetPackageNames	public	Populates a string list with the names of all packages defined on the server.
GetParentComponent	public	Returns the containing component.
GetProcedureNames	public	Populates a string list with the names of stored procedures in the database.
GetProcedureParams	public	Populates a list with parameter descriptors for the parameters in a stored procedure.
GetSchemaNames	public	Returns the schema names for all objects in the given data source.
GetServerMethodNames	public	Populates a string list with the names of the server methods.
GetTableNames	public	Populates a string list with the names of tables in the database.
GetTypeInfo	protected	Retrieves the type information for an object.
GetTypeInfoCount	protected	Returns the number of type information interfaces that an object provides (either 0 or 1).
HasParent	public	Verifies whether the component has a parent.
HasTransaction	public	Returns whether the SQL connection has the specified transaction in the database.
InheritsFrom	public	Determines the relationship of two object types.
InitInstance	public	Initializes a newly allocated object instance to all zeros and initializes the instance's virtual method table pointer.
InsertComponent	public	Establishes the component as the owner of a specified component.
InstanceSize	public	Returns the size in bytes of each instance of the object type.
Invoke	protected	Provides access to Automation properties and methods when the component wraps an Automation object.
IsImplementorOf	public	Indicates whether the component implements a specified interface.
Loaded	protected	Initializes the connection component after all objects in the form or data module have been loaded.
LoadParamsFromIniFile	public	Sets the DriverName and Params properties to the values associated with the ConnectionName property.
MethodAddress	public	Returns the address of a class method by name.
MethodName	public	Returns the name of a class method by address.
NewInstance	public	Allocates memory for an instance of an object type and returns a pointer to that new instance.
Notification	protected	Forwards notification messages to all owned components.
ObserverAdded	protected	Allows the component to handle the addition of an observer.
Open	public	Opens the connection.
OpenSchema	protected	Retrieves schema information from the connection's provider.
operator ()	public	C++ conversion of a TComponent into a System.Classes.IInterfaceComponentReference or a System.IInterface, depending on casting.
QualifiedClassName	public	Returns the qualified name of the class.
QueryInterface	protected	Returns a reference to a specified interface if the current component supports that interface.
ReadState	protected	Reads the state of the component.
ReferenceInterface	public	Establishes or removes internal links that cause this component to be notified when the implementer of a specified interface is destroyed.
RegisterClient	protected	Registers an object that uses the connection component.
RemoveComponent	public	Removes a specified component specified from the component's Components list.
RemoveConnectNotification	public	Removes a registered client listener object so that it is no longer associated with the connection component.
RemoveFreeNotification	public	Disables the destruction notification that was enabled by FreeNotification.
RemoveFreeNotifications	protected	Notifies all owned components of the owner component's imminent destruction.
Rollback (deprecated)	public	Cancels all updates, insertions, and deletions for a specified transaction and ends the transaction.
RollbackFreeAndNil	public	Cancels all updates, insertions, and deletions for a specified transaction and ends the transaction.
RollbackIncompleteFreeAndNil	public	Cancels all updates, insertions, and deletions for a specified transaction and ends the transaction.
SafeCallException	public	Handles exceptions in methods declared using the safecall calling convention.
SendConnectEvent	protected	Informs all registered clients that use the connection component when a connection is opened or closed.
SetAncestor	protected	Clears or sets csAncestor state in the component's ComponentState property.
SetChildOrder	protected	Sets the visual ordering of a child control.
SetConnected	protected	Changes the value of the Connected property.
SetDesigning	protected	Ensures that components inserted at design time have their design-mode flag set.
SetDesignInstance	protected	Ensures that components inserted at design time have their design-mode flag set.
SetInline	protected	Sets the csInline bit of the component's ComponentState property.
SetName	protected	Sets the value of the Name property.
SetParentComponent	protected	Sets the parent component.
SetSubComponent	public	Identifies whether the component is a subcomponent.
SetTraceEvent	public	Associates the SQL connection with a callback function that executes for every SQL command passed to or from the server.
StartTransaction (deprecated)	public	Initiates a new transaction in the associated database.
ToString	public	Returns a string containing the class name.
UnitName	public	Returns the name of the unit where the class is defined.
UnitScope	public	Returns the class's unit scope.
UnRegisterClient	protected	Removes a registered client so that it is no longer associated with the connection component.
UpdateAction	public	Updates the state of an action.
Updated	protected	Clears the csUpdating state in the component's ComponentState property when the component finishes updating.
UpdateRegistry	protected	Provides the interface for a method that adds type library and version information to the Registry on components that implement COM interfaces.
Updating	protected	Sets the csUpdating state in the component's ComponentState property.
ValidateContainer	protected	Determines whether an object can be inserted into a container.
ValidateInsert	protected	Provides the interface for a method that validates a child component before it is inserted.
ValidateRename	protected	Ensures that renaming an owned component does not create a name conflict.
WriteState	protected	Writes the state of the component.